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Certify your skincare product with us! Maximise microbiome benefits in your strategy. Let's start today for success! Skin Microbiome Testing As the skincare industry grows, consumers demand transparency from the brands formulating their products. It has become essential for formulators to create products they are willing to test to present scientifically backed data-driven evidence of their products' true effects. Sequential offers microbiome testing for your skincare formulations, ranging from moisturizers, serums, cleansers, SPF products, etc. We are dedicated to understanding how your product interacts with the skin and its microbes. Depending on how in-depth you want to go, we offer qPCR, 16S, ITS, and Shotgun Metagenomics. Download Case Study! Personalized Approach to Testing Unlike other methodologies present within the industry, Sequential's approach ensures that your product's data and analysis will stand the test of industry regulations when they are introduced. You can tailor your study entirely to your unique requirements. Test Products in a Real-Life Context The microbiome comprises a complex ecosystem of microorganisms that live together in a delicate balance, which is why it's best to test directly upon it directly. To fully understand the impact a product is having on the microbiome, in vivo is the only way. Collect Longitudinal Data With in vivo testing we can design your study around the extended use of a product over multiple time points. This allows us to review how a product is performing before and after usage, but also take into account its gradual impact on the microbiome. Measure Against a Control Group Measure a product against a control group that might have a different percentage of your active ingredient within its formulation or no active at all. This will allow for deeper insights into the impact of a formulation on microbial balance and diversity. 4 Sequencing Reports To Pick From Depending on your development stage and what you are interested in studying we offer qPCR, 16S, ITS, and Shotgun Metagenomics. With our qPCR Smart Probes™ we can go down to the strain level in our analysis. Personalize Your Microbiome Study! The body's skin surface consists of the largest organ within the human body, hosting trillions of microbes (bacteria, viruses, fungi, etc.). These microbes protect the body from external forces, playing a key role in systemic human health. Clinically Validated Collection System In addition to skin swabs, at Sequential we have developed another strong innovation to collect reliable, reproducible, and straight forward skin samples - making it that much easier to do remote consumer and clinical studies. - Validated with external parties for DNA and RNA collection, both from microbial and host cells. - Published in peer-reviewed journals, showing ease of collection and adoption for clinical studies in a range of studies. -Clinically tested on 7 unique body sites. Smart Probe s ™ Our dedicated team of scientists have developed a method of evaluating microbes through our Smart Probes™. These refer to a panel of 20 key microbes we have specifically identified as having the most impact on skin health. Over and above the taxonomic characterisation that 16S offers, which gives us a snapshot of all the genus present within a collected sample (Cutibacterium, Staphyloccocus, etc.) our targeted approach takes it a step further, opening the lens to the species (C. acnes ), sub-species (C. acnes defendens ) and even strains within them. This is a crucial distinction as not all strains of a species behave similarly. In Fact, we find that within these species there are strains associated with inflammation and strains that are commensal, and beneficial. Gold Standard Certification Sequential has developed the gold standard test for products designed to target the microbiome, in vivo (in, or on, humans). Finally, we can give some certainty about if a product is truly affecting the microbiome. Using next-generation sequencing of the collection of micro-organisms found on the body, before and after product usage, Sequential investigates the microbial balance and diversity, and particular micro-organisms we know are important and play a role in a healthy microbiome. We give you an in vivo certification that your product maintains the microbiome. And it’s not exclusive to skincare! We do this for haircare products, oral products, and vulva/vaginal microbiomes. Personalize Your Microbiome Study! Supplement Your Microbiome Study Recruitment Services Let us take care of the entire candidate recruitment process for you! View More Biophysical Assessments Increase your data on the use of your product by evaluating additional biophysical factors. View More Formulation Support Seek consultation advice for your formulation if you are re-formulating or developing a new product. View More FAQ What is Sequential's testing platform? Sequential has developed the gold standard test for microbiome-friendly products, in vivo (in, or on, humans). Finally, we can give some certainty about if a product is truly affecting the microbiome. We offer a complete end-to-end solution to support microbiome-friendly claims. From consultancy and study design to our proprietary microbiome testing kits. We analyse, interpret and report our findings to meet your needs. Why is it necessary to test the microbiome in vivo? At present, there are no regulations for microbiome-related formulas that brands and formulators can follow, however, it has been universally acknowledged that the in vivo method of conducting clinical studies is becoming critical and paramount to getting marketing claims through. When regulations are introduced, which may be imminent, the in vitro system will find itself lacking, resulting in limited claims and certifications that do not hold their value. This is why, we at Sequential strive to offer an in vivo approach, knowing full well that we want our client's claims to be significantly backed by scientific and quantifiable data. What type of sequencing technology does Sequential use for analysis? We offer four types of sequencing techniques including qPCR with our Smart Probes™, 16S, ITS and Shotgun Metagenomics. Using next-generation sequencing of the collection of microorganisms found on the body, during product usage, Sequential investigates the microbial diversity, and particular microorganisms we know are important and play a role in a healthy microbiome. Does Sequential offer claims certification for tested products? We provide our clients with a certification to claim “Maintains the Microbiome” subject to in vivo testing results which can be used in communication efforts. Once your product is tested with our qPCR Smart Probes™ and has shown favourable results in supporting the microbiome, we can certify your product with our Maintains the Microbiome certification seal. We have ensured that our seal and certification are backed by quantifiable data and scientifically significant markers. The aim is to ensure our clients feel confident in making their claims and can communicate the true benefit of their microbiome formulations.

Throughout the year, Sequential has the pleasure of going to various conferences and trade shows where we talk all things microbiome testing and clinical studies. Don't miss us when we're in your city next! Connect With Us At Conferences At Sequential, we believe in the power of personal connections and the exchange of ideas to foster innovation and growth. As we actively participate in various conferences and industry events, we invite you to be a part of these enriching experiences. Explore the opportunities to engage with our team, discover the latest industry trends, and strengthen the bonds that drive mutual success. Join us at conferences to connect, learn, and pave the way for future collaborations. Where we will be in 2026 2-4 March Cambridge, United Kingdom 18-19 March Copenhagen, Denmark 14-16 April Paris, France 19-20 May New York City, USA 14 July Liverpool, United Kingdom 28 September - 1 October Perth, Australia 10-11 November Coventry, United Kingdom Microbiome Interactions in Health and Disease Our CEO & Co-founder, Dr. Oliver Worsley, will have the pleasure of attending this year. Microbiome Times Partnering Forum We are incredibly excited to be part of this forum, where we get to discuss with experts in the industry. In-cosmetics Global Have the pleasure of exhibiting and presenting at In-cosmetics Global. Come visit us at Booth (1A64) and listen to our CEO & Co-founder, Dr. Oliver Worsley, speak on “Advancing Personal Care Claims with integrated Human and Microbiome Data” on 14th April, Theatre 3 – 15.05 - 15.35. NYSCC Supplier's Day We are back at New York Supplier’s Day! (Booth information TBA) SCS Conference We will be attending the SCS Conference and look forward to connecting with industry peers. IFSCC Congress We are pleased to be attending the IFSCC Congress, engaging with the global cosmetics science community. SCS Formulate Visit us at Booth (600) at this year’s SCS Formulate to learn more about our work and speak with the team. Connect with us on Socials!

Sequential is proud to announce that is has been dubbed the most significant testing method in the industry for microbiome testing. Allē Award: Sequential Wins Prestigious “Most Significant” Testing Method After being listed as a finalist as best ‘Claims testing methods & tools’ alongside Evonik, and XCellR8 - Sequential brings home top prize in C&T’s Allē Awards, 2022. The personal care and cosmetics industry in the US is valued at $190B. In the context of the skin microbiome, the industry is still a relatively nascent field. However, its projected growth is significant, estimated to grow at a compounded annual growth of 29.2% between 2022-2028. Owed to the impact of products on the skin microbiome, consumer awareness, and understanding that our microbiome is intimately linked to our health. Sequential is the B2B microbiome testing arm for Sequential Skin Ltd, which has developed the world’s first end-to-end platform for companies to evaluate their products on the microbiome in vivo. They specialize in skin, scalp and intimate area microbiome. "Of all the 'microbiome friendly' methodologies working to address both consumer and industry concerns about the impact of cosmetics on the microbiome, this is, in my opinion, the most quantitative and promising of the lot." – C&T's Allē Award judges, 2022. The company has developed a proprietary non-invasive method for collecting skin samples to analyze the skin microbiome using next-generation sequencing (NGS), with species and strain identification, in longitudinal (and clinical) studies. Services include data interpretation and the results are reported in a comprehensive, yet understandable format, ready for formulators and research scientists to incorporate into their product development pipeline. “The Allē Award gives us strong confidence in the testing platform and capabilities we’ve built in Sequential. Being the first to develop an in vivo microbiome test for the industry, we’re proud to see our hard work paying off” — Petronille Houdart, DPharm, skincare director at Sequential. About Sequential Sequential is part of the Sequential Skin group – with a US lab in New York City, alongside a lab in London and a lab in Singapore. Sequential team has over 20 years of combined expertise in genetics, epigenetics, and microbiome research. Sequential has validated its AI-driven testing platform with over 30 companies, analyzing over 12,000 skin microbiome samples. They specialise in skin, scalp and vulva/vaginal microbiome samples. They are supported by Enterprise SG, A*STAR, Genome Institute of Singapore, IndieBio New York, SOSV, Metaplanet Holdings, Scrum Ventures, Genedant VC, Ben Holmes (ex. General Partner at Index Ventures), Innovate UK, and are a resident company of Johnson & Johnson Innovation – JLABS.

Genom and Sequential Announce Strategic Partnership to Advance Microbiome Testing Services in Personal Care and Pharma Sectors Zagreb, Croatia / London, UK – May 6 2025 – Genom d.o.o., a Croatian-based provider of genetic testing services, and Sequential Skin Ltd, a UK-based leader in end-to-end microbiome testing solutions, are pleased to announce a strategic partnership aimed at expanding access to advanced microbiome testing across the personal care and pharmaceutical industries. Through this agreement, Genom and Sequential are collaborating to expand microbiome testing efforts across the Balkans and Slavic regions—areas that have historically been underrepresented in microbiome research. By combining Genom’s deep regional expertise and network with Sequential’s advanced testing platform, the partnership aims to unlock valuable insights from a more diverse population base. This initiative supports both companies’ shared vision of advancing personalized health and product development through inclusive, data-driven innovation in the personal care and pharmaceutical industries. Sequential’s proprietary platform offers extensive sampling capabilities—including skin, scalp, oral, gut, and intimate areas—combined with advanced downstream analysis techniques such as qPCR and next-generation sequencing. With over a decade of academic research backing its methodology, Sequential empowers brands to better understand individual microbiomes and tailor products accordingly. Genom brings to the partnership a strong foundation in molecular biology and over a decade of experience in genetic testing, now expanding into microbiome analytics to support local companies in developing evidence-based products in the personal care and pharmaceutical sectors. Together with Sequential, Genom will play a key role in supporting regional operations, and scientific collaboration. This partnership is designed to jointly deliver tailored microbiome solutions to personal care and pharmaceutical companies. “Partnering with Genom allows us to explore the microbiome in regions that have been largely overlooked,” said Oliver Worsley, CEO of Sequential Skin Ltd . “It’s an exciting step toward building a richer, more representative microbiome dataset — one that will ultimately lead to better, more inclusive solutions in personal care and health.” “We are proud to be bringing world-class microbiome testing to our local industry. This partnership allows brands in our region to validate their innovations scientifically and competitively,” said Maja Barbalić, CEO of Genom d.o.o . About Genom d.o.o. Genom is a Croatian-based company specializing in molecular diagnostics and human genetics. Leveraging a scientific foundation and strategic industry connections, Genom supports its partners in bringing evidence-based innovations to market. About Sequential Skin Ltd Sequential is the world’s leading microbiome platform for skin, scalp and intimate area clinical microbiome testing. Sequential has collected over 25,000 microbiome samples, using machine learning to combine microbiome + clinical data + formulations, for effective personal care and healthcare applications. They are backed by Innovate UK Smart Grants, Enterprise Singapore, Corundum Systems Biology, SOSV, Scrum Ventures, and Metaplanet Holdings. Clients include Johnson & Johnson, Walgreens Boots Alliance, and 60 other leading clients in personal care and pharmaceutical.

How do I Rebuild my Skin Microbiome? How do I Rebuild my Skin Microbiome? Our skin, as we know to be the body's largest organ, hosts a plethora of microorganisms. An elaborate ecosystem of bacteria, fungi, and viruses that live on the skin and maintain its optimal health, making up the skin microbiome (Smythe & Wilkinson, 2023). These microorganisms serve as a protective barrier against harmful pathogens, aid in immune system regulation, and play a vital role in various skin functions. However, factors such as harsh skincare products, poor diet, and environmental stressors can disrupt the balance, leading to acne, eczema, and other skin disorders (Wallen-Russell, 2019). Restoring the skin microbiome involves a complex and multifaceted approach that includes lifestyle changes, targeted skincare practices, and sometimes dietary adjustments. Understanding the Skin Microbiome The microbiome varies depending on the region of the skin, with different areas hosting distinct microbial communities. Fournière et al. (2020) examine how Staphylococcus epidermidis and Cutibacterium acnes, key skin microbiota components, vary across different skin environments. For instance, Staphylococcus species are mainly in moist areas like axillary and popliteal creases, while Cutibacterium species are found in sebaceous areas such as the face and back. An ideal and healthy skin microbiome is diverse, and resilient, capable of adapting to changes and defending against adversaries. Steps to Restore the Skin Microbiome 1. Use Less & Gentle Skincare Products: Using lesser products would simplify one’s skincare routine, making it easier to stay consistent and therefore allow the skin to adjust and benefit from the active ingredients. Hwang et al. (2021) further suggests that in order to restore the skin microbiome, one should actively choose products with essential ingredients which are natural, soothing and non-disruptive to the skin's natural barrier. 2. Incorporate Probiotics, Prebiotics and Postbiotics: Just as the gut microbiome benefits from probiotics, so does the skin. Probiotic skincare adds beneficial bacteria to restore skin balance, while prebiotics nourish existing good bacteria to boost their growth. Common probiotics include Lactobacillus and Bifidobacteria, found in drinks, powders, tablets, and fermented dairy products (Gowda, et al. 2024). 3. Protect Your Skin from Environmental Stressors: Limit exposure to environmental pollutants and the sun, which can damage the skin barrier and disrupt the microbiome (Wang et al., 2021). Using protective measures like sunscreen, wearing protective clothing, and cleansing your skin regularly can help maintain the integrity of the skin barrier and support a balanced microbiome. 4. Moisturise Regularly: Keeping the skin well-hydrated is crucial for maintaining a healthy microbiome. Dry skin can compromise the skin barrier, making it easier for harmful bacteria to invade. Use a moisturiser that contains ingredients like ceramides, which help to strengthen the skin barrier, and hyaluronic acid to retain moisture. (Spada & Greive, 2018) 5. Pay Attention to Diet: A diet rich in fruits, vegetables, and whole grains supports skin microbiome health with essential vitamins, minerals, and antioxidants. Omega-3 fatty acids, found in fish and flaxseeds, are particularly beneficial as they have anti-inflammatory properties that can help maintain a balanced skin microbiome. (Costantini, Molinari & Merendino, 2017) Conclusion Restoring the skin microbiome is an ongoing process that demands consistent effort and dedication. By understanding the skin microbiome and incorporating strategies to support its health, you can significantly enhance your skin's ability to protect against environmental stressors and lower the risk of skin disorders. References Smythe, P., & Wilkinson, H. N. (2023). The skin microbiome: Current landscape and future opportunities. International Journal of Molecular Sciences, 24(4), 3950. https://doi.org/10.3390/ijms24043950 Wallen-Russell, C. (2019). The impact of skin care products on skin chemistry and microbiome dynamics. BMC Biology, 17(1), 47. https://doi.org/10.1186/s12915-019-0660-6 Fournière, M., Latire, T., Souak, D., Feuilloley, M. G. J., & Bedoux, G. (2020). Staphylococcus epidermidis and Cutibacterium acnes: Two major sentinels of skin microbiota and the influence of cosmetics. Microorganisms, 8(11), 1752. https://doi.org/10.3390/microorganisms8111752 Hwang, B. K., Lee, S., Myoung, J., Hwang, S. J., Lim, J. M., Jeong, E. T., Park, S. G., & Youn, S. H. (2021). Effect of the skincare product on facial skin microbial structure and biophysical parameters: A pilot study. MicrobiologyOpen, 10(5), e1236. https://doi.org/10.1002/mbo3.1236 Gowda, V., Sarkar, R., Verma, D., & Das, A. (2024). Probiotics in Dermatology: An Evidence-based Approach. Indian dermatology online journal, 15(4), 571–583. https://doi.org/10.4103/idoj.idoj_614_23 Wang, L., Xu, Y. N., Chu, C. C., Jing, Z., Chen, Y., Zhang, J., Pu, M., Mi, T., Du, Y., Liang, Z., Doraiswamy, C., Zeng, T., Wu, J., & Chen, L. (2021). Facial Skin Microbiota-Mediated Host Response to Pollution Stress Revealed by Microbiome Networks of Individual. mSystems, 6(4), e0031921. https://doi.org/10.1128/mSystems.00319-21 Spada, F., Barnes, T. M., & Greive, K. A. (2018). Skin hydration is significantly increased by a cream formulated to mimic the skin's own natural moisturizing systems. Clinical, cosmetic and investigational dermatology, 11, 491–497. https://doi.org/10.2147/CCID.S177697 Costantini, L., Molinari, R., Farinon, B., & Merendino, N. (2017). Impact of Omega-3 Fatty Acids on the Gut Microbiota. International journal of molecular sciences, 18(12), 2645. https://doi.org/10.3390/ijms18122645

Rosacea is a chronic skin condition affecting an estimated 16 million Americans and millions more worldwide, primarily adults over 30 (National Rosacea Society). TARGETED SKIN PANEL Rosacea Targeted Panel 23 Smart Probes ™ Rosacea Panel Validated targets: Demodex mites, Bacillus oleronius, Corynebacterium kroppenstedtii Absolute Quantification End-to-end Service Qet a Quote Unlock the Secrets of Rosacea with Sequential's Cutting-Edge Microbiome Testing Why Microbiome Testing for Rosacea? Rosacea is a chronic skin condition affecting an estimated 16 million Americans and millions more worldwide, primarily adults over 30 (National Rosacea Society). Characterized by redness, visible blood vessels, and inflammation, rosacea can significantly impact an individual’s quality of life. Research suggests that the skin microbiome plays a crucial role in the development and severity of rosacea. Specifically, imbalances in microbial populations, such as an overgrowth of Demodex mites or harmful bacteria, can exacerbate symptoms. In vivo testing of skincare products for rosacea is essential to ensure that formulations are compatible with the unique microbiome of rosacea-prone skin. Such testing allows researchers to observe real-world effects on microbial balance and inflammation, ensuring that products do not unintentionally worsen symptoms. Without this careful testing, products may disrupt the microbiome further, leading to increased redness, irritation, or flare-ups. Sequential is leading the way in microbiome testing for the industry. With a specialized focus on skin conditions, we have developed an innovative solution tailored to help you understand the root causes of rosacea at the microbial level. Our proprietary sequencing panel is designed specifically to offer in-depth analysis of rosacea-associated microbiota, giving you the tools to transform skincare solutions. Customized Analysis Tailored insights specific to rosacea-prone skin, allowing your R&D team to develop more personalized and effective products. Actionable Data Leverage detailed reports to guide formulation decisions and validate product efficacy with precision. Product Innovation New rosacea treatments or enhancing existing lines, our data helps you create targeted solutions with proven results. Precision Sequencing Target specific microbial communities associated with rosacea development and severity. Smart Probe s ™ Our dedicated team of scientists has developed a revolutionary method for evaluating microbes through our Smart Probes™, a proprietary panel that includes 23 key microbes specifically identified as having the most significant impact on skin health. To further understand the complex relationship between rosacea and the skin microbiome, we utilize qPCR technology. This advanced method allows us to accurately quantify microbial populations on the skin, offering deeper insights into how rosacea affects the balance of beneficial and harmful microbes. By closely monitoring how skincare products interact with these microbes, companies can develop solutions that not only target rosacea symptoms but also help restore a healthier, balanced skin microbiome, providing long-term relief for sufferers. Rosacea Panel Targets Demodex mites (Demodex folliculorum and Demodex brevis) These tiny mites are normally present on the skin but are often found in higher numbers on the skin of individuals with rosacea. Their presence is thought to trigger inflammatory responses. Forton FMN. The Pathogenic Role of Demodex Mites in Rosacea: A Potential Therapeutic Target Already in Erythematotelangiectatic Rosacea? Dermatol Ther (Heidelb). 2020 Dec;10(6):1229-1253. doi: 10.1007/s13555-020-00458-9. Epub 2020 Oct 23. PMID: 33095403; PMCID: PMC7649190. Kim HS. Microbiota in Rosacea. Am J Clin Dermatol. 2020 Sep;21(Suppl 1):25-35. doi: 10.1007/s40257-020-00546-8. PMID: 32914214; PMCID: PMC7584533. Bacillus oleronius This bacterium has been linked to rosacea, particularly in relation to the inflammatory response associated with the condition. It is often found in higher quantities on the skin of rosacea patients. Corynebacterium kroppenstedtii This bacterium appears to be significantly overrepresented in papulopustular and mixed rosacea compared to healthy skin, with its presence correlating with disease severity and lesion spread, suggesting a potential opportunistic or contributory role in rosacea pathophysiology. Chien AL, Kang S, et al. Characterization and Analysis of the Skin Microbiota in Rosacea. J Am Acad Dermatol. 2020; PMID: 31502207. Industry Leader in Absolute Quantification Sequential’s Smart Probe ™ qPCR approach to microbiome analysis can resolve species and subspecies, giving statistically significant findings between skin conditions on in vivo human samples, compared to conventional sequencing approaches. Relevant Research How Does the Skin Microbiome Influence Rosacea? Unveiling the Microbial Puzzle Read More Articles

Certify your intimate care product with us! Maximize microbiome benefits in your strategy. Let's get started today for success! Vaginal & Vulvar Microbiome Testing As the intimate care industry grows, consumers demand transparency from the brands formulating their products. It has become essential for formulators to create products they are willing to test to present scientifically backed data-driven evidence of their products' true effects. Sequential offers microbiome testing for your intimate care formulations, hygiene washes and other products geared towards that delicate area. We are dedicated to understanding how your product interacts with the vaginal region and its microbes. Depending on how in-depth you want to go, we offer qPCR, 16S, ITS, and Shotgun Metagenomics. Download Case Study! Personalized Approach to Testing Unlike other methodologies present within the industry, Sequential's approach ensures that your product's data and analysis will stand the test of industry regulations when they are introduced. You can tailor your study entirely to your unique requirements. Test Products in a Real-Life Context The microbiome comprises a complex ecosystem of microorganisms that live together in a delicate balance, which is why it's best to test directly upon it directly. To fully understand the impact a product is having on the microbiome, in vivo is the only way. Collect Longitudinal Data With in vivo testing we can design your study around the extended use of a product over multiple time points. This allows us to review how a product is performing before and after usage, but also take into account its gradual impact on the microbiome. Measure Against a Control Group Measure a product against a control group that might have a different percentage of your active ingredient within its formulation or no active at all. This will allow for deeper insights into the impact of a formulation on microbial balance and diversity. 4 Sequencing Reports To Pick From Depending on your development stage and what you are interested in studying we offer qPCR, 16S, ITS, and Shotgun Metagenomics. With our qPCR Smart Probes™ we can go down to the strain level in our analysis. Personalize Your Microbiome Study! The vaginal microbiome is a dynamic ecosystem primarily dominated by Lactobacillus bacteria, which produce lactic acid and help maintain an acidic pH, creating a hostile environment for potential pathogens. This acidic environment is crucial for preventing infections and promoting overall vaginal health. Smart Probe s ™ Our dedicated team of scientists have developed a method of evaluating microbes through our Smart Probes ™ . These refer to a panel of 20 key microbes we have specifically identified as having the most impact on vaginal health. Over and above the taxonomic characterisation that 16S offers, which gives us a snapshot of all the genus present within a collected sample (Lactobacillus , Streptococcus , etc.) our targeted approach takes it a step further, opening the lens to the species (L.crispatus ), sub-species and even strains within them. This is a crucial distinction as not all strains of a species behave similarly. In fact, we find that within these species there are strains associated with inflammation and strains that are commensal, and beneficial. Gold Standard Certification Sequential has developed the gold standard test for products designed to target the microbiome, in vivo (in, or on, humans). Finally, we can give some certainty about if a product is truly affecting the microbiome. Using next-generation sequencing of the collection of micro-organisms found on the body, before and after product usage, Sequential investigates the microbial balance and diversity, and particular micro-organisms we know are important and play a role in a healthy microbiome. We give you an in vivo certification that your product maintains the microbiome. And it’s not exclusive to skincare! We do this for haircare products, oral products, and vulva/vaginal microbiomes. Personalize Your Microbiome Study! Supplement Your Microbiome Study Recruitment Services Let us take care of the entire candidate recruitment process for you! View More Biophysical Assessments Increase your data on the use of your product by evaluating additional biophysical factors. View More Formulation Support Seek consultation advice for your formulation if you are re-formulating or developing a new product. View More FAQ What is Sequential's testing platform? Sequential has developed the gold standard test for microbiome-friendly products, in vivo (in, or on, humans). Finally, we can give some certainty about if a product is truly affecting the microbiome. We offer a complete end-to-end solution to support microbiome-friendly claims. From consultancy and study design to our proprietary microbiome testing kits. We analyse, interpret and report our findings to meet your needs. Why is it necessary to test the microbiome in vivo? At present, there are no regulations for microbiome-related formulas that brands and formulators can follow, however, it has been universally acknowledged that the in vivo method of conducting clinical studies is becoming critical and paramount to getting marketing claims through. When regulations are introduced, which may be imminent, the in vitro system will find itself lacking, resulting in limited claims and certifications that do not hold their value. This is why, we at Sequential strive to offer an in vivo approach, knowing full well that we want our client's claims to be significantly backed by scientific and quantifiable data. What type of sequencing technology does Sequential use for analysis? We offer four types of sequencing techniques including qPCR with our Smart Probes™, 16S, ITS and Shotgun Metagenomics. Using next-generation sequencing of the collection of microorganisms found on the body, during product usage, Sequential investigates the microbial diversity, and particular microorganisms we know are important and play a role in a healthy microbiome. Does Sequential offer claims certification for tested products? We provide our clients with a certification to claim “Maintains the Microbiome” subject to in vivo testing results which can be used in communication efforts. Once your product is tested with our qPCR Smart Probes™ and has shown favourable results in supporting the microbiome, we can certify your product with our Maintains the Microbiome certification seal. We have ensured that our seal and certification are backed by quantifiable data and scientifically significant markers. The aim is to ensure our clients feel confident in making their claims and can communicate the true benefit of their microbiome formulations.

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Sequential provides advanced microbiome testing for personal care products, delivering actionable insights to enhance product efficacy and consumer trust. Human Clinical Testing. Biomarker Discovery. Next-generation Formulations. What We Offer From study design and participant recruitment to laboratory analysis and data interpretation, Sequential delivers an end-to-end, in-house solution for understanding how products interact in real use cases. Our clinically relevant insights translate complex microbial and molecular data into clear, actionable outcomes empowering companies to develop products that are credible, effective, and trusted by consumers. See How We Can Help 50,000+ Microbiome Sample Database 4,000+ Ingredient Database 10,000+ Testing Participants Globally 100+ Industry Partners Supporting World-Class Clients & Partners Join Our Partners! What Our Clients Say “Sequential is one of the world’s most innovative Microbiome companies. The resolution at subspecies level, and to perform quantification of key vaginal microbes, in vivo , was exactly what we wanted at Curive Healthcare to know intricately how our product is working to improve women’s health.” - Matthew Line, Chief Marketing Officer at Curive Healthcare

Sequential is honoured to be spoken and written about in numerous publications. We are always keen to speak about the great milestones we are hitting with our personal care microbiome testing platform. Sequential in the Press Men’s grooming shifts toward science-driven solutions 24-Feb-2026 Read Now Sequential: Testing shows skin microbiome plays a role in hyperpigmentation 7-Oct-2025 Read Now The bidirectional skin-gut microbiome: a game-changer for cosmetic formulators 29-Jul-2025 Read Now Sequential and AMILI Secure Prestigious $1.8M UK-Singapore Collaborative R&D Project 13-Feb-2025 Read Now Sequential Launches Industry-First Microbiome Target Panels for Skin Conditions 16-Oct-2024 Read Now From the experts: Top 3 trends in skin microbiome research 20-Jun-2024 Read Now Is Home-Based Skin Microbiome Testing Transforming Beauty and Health Care Industry? 7-Dec-2023 Read Now “Hormone-led changes cause differences to the vaginal ecology that can have an effect on women’s health later in life.” CEO of Sequential 13-Sep-2023 Read Now Sequential and Johnson & Johnson enter partnership to develop new genomic-based skin test 16-Mar-2023 Read Now Sequential Announces New Collaboration Agreement to Quantify Skin Health 15-Mar-2023 Read Now ‘Natural evolution’: Gallinée unveils at-home skin microbiome test kits with Sequential Skin 09-Mar-2023 Read Now Here They Are: Congratulations to the Winners of the 2022 C&T Allēs 29-Sep-2022 Read Now Sequential Skin: Why We Invested 11-Apr-2022 Read Now Sequential Skin Debuts Sequential Bio Testing Solution 09-Mar-2022 Read Now Biotech Start-Up Sequential Skin Raises Funds 10-Dec-2021 Read Now Biotech startup Sequential Skin raises €1.4m – ‘We want to accelerate the future of skin health,’ says CEO 11-Oct-2021 Read Now PODCAST – Holistic view on skin: Sequential Skin on why microbiome testing is crucial to personalised beauty 21-Aug-2020 Read Now Beauté personnalisée: Sequential Skin la Beauty Tech made in Singapore 07-Jul-2020 Read Now GWS 2019 DAY 2 Beauty, Science & Technology: Skin in the Game 25-Nov-2019 Read Now Science-led minimalism shapes future sustainable skin care 13-Jan-2026 Read Now Beautiful Bacteria: Are We On The Cusp Of Microbiome Mainstreaming? 28-Sep-2025 Read Now Sequential Skin and AMILI Secure $1.8M UK-Singapore Grant to Advance Gut-Skin Microbiome Science 14-Feb-2025 Read Now 50694 Gut microbiome differences between patients with moderate to severe Chronic Hand Eczema and healthy subjects Sep-2024 Read Now Is Microbiome Certification even Necessary? 29-Jul-2024 Read Now ‘It’s a really delicate system’: Research on vaginal microbiome shows how little we know about femcare 22-Jan-2024 Read Now Gallinée lance le premier test de santé de la peau et du microbiome à réaliser chez soi 10-Oct-2023 Read Now Lysine-dendrimer: a gentle yet effective acne treatment that maintains skin microbiome, says study 18-Aug-2023 Read Now Acne and ageing: J&J exploring skin health markers via Sequential Skin research tie-up 15-Mar-2023 Read Now Sequential Skin x Johnson & Johnson Collab to Quantify Skin Health 14-Mar-2023 Read Now Understand before purchase: Microbiome testing can help consumers find the right products and eliminate waste 30-Jan-2023 Read Now Sequential Wins New Grant To Propel Skin Microbiome Research 30-Jun-2022 Read Now Sequential Skin launches test to assess ingredient effect on microbiome 22-Mar-2022 Read Now Microbiome start-up Sequential Bio debuts first in-vivo testing for personal care industry 04-Mar-2022 Read Now Sequential Skin Raises $1.6M in Oversubscribed Seed Round 12-Oct-2021 Read Now The skin microbiome brainstorm: Tech, claims and trend-driven NPD 16-Sep-2021 Read Now Skin Sensors Enable Personalized Skin Care 20-Aug-2020 Read Now Sequential Skin: beauty tech’s new approach to genetic analysis and microbiome skincare 09-Mar-2020 Read Now How genetic insights can personalise skin microbiome launches 29-Jul-2019 Read Now Deep dive into Radiance Evaluation 9-Oct-2025 Read Now Men’s care shifts toward function-first to address skin needs beyond the basics 16-Sep-2025 Read Now Sequential and AMILI secure $1.8M UK-Singapore R&D project to advance gut-skin microbiome science 13-Feb-2025 Read Now New clinical testing to “investigate microbial roots of various skin conditions” 17-Oct-2024 Read Now Losing its meaning? ‘Microbiome-friendly’ terms at risk of misleading consumers – Sequential CEO 29-Jul-2024 Read Now Navigating the realm of intimate care products 17-Jan-2024 Read Now Avec ce test microbiome maison, 10 secondes m'ont suffit pour découvrir les besoins de ma peau 04-Oct-2023 Read Now Lysine-Dendrimer, a New Non-Aggressive Solution to Rebalance the Microbiota of Acne-Prone Skin 3-Aug-2023 Read Now Sequential Announces New Collaboration Agreement to Measure Skin Health for Leading Developer of Personal Care Products 15-Mar-2023 Read Now Sequential Skin partners with Johnson & Johnson on microbiome tests 10-Mar-2023 Read Now Symbiome Partners with Skin Microbiome Testing experts at Sequential to Revolutionize Beauty Industry 26-Jan-2023 Read Now Sequential Skin Nabs $500K UK Grant to Study Skin Microbiome in Atopic Dermatitis 29-Jun-2022 Read Now Demands rising for clinical data on the skin microbiome: Experts 22-Mar-2022 Read Now ‘Maintaining the microbiome’: Biotech startup Sequential Skin debuts in vivo B2B testing service 03-Mar-2022 Read Now Start-up Sequential Skin bags $1.65m of fresh funding 12-Oct-2021 Read Now Singapore Beauty Startup Sequential Skin Uses Science to Help Identify the Best Skincare For You 07-Jan-2021 Read Now Overlooked opportunities? Skin microbiome may play a more important role in personalisation than DNA 13-Aug-2020 Read Now Sequential tool kit prioritises personalisation 15-Jan-2020 Read Now

How Do I Test My Microbiome? How Do I Test My Microbiome? The microbiome refers to the collection of trillions of microorganisms, such as bacteria, fungi, and viruses, that live in and on your body, particularly in your gut. (Lloyd-Price, Abu-Ali & Huttenhower, 2016) These microbes are vital components in maintaining our health by aiding digestion, regulating the immune system, and even influencing mood and overall brain function. Given the growing interest in the microbiome's impact on overall well-being, testing the microbiome has broadened its appeal among people. Here's an overview of the process, why it's important, and what the results could reveal. Types of Microbiome Tests Skin tests: Skin microbiome samples are typically collected using non-invasive methods, such as swabs, tape strips, or skin scrapings. A swab is gently rubbed over the surface of the skin to capture microbial communities from different body areas, depending on the research or diagnostic needs. These samples are then sent to a lab for DNA sequencing to identify and quantify the microbial species present (Grice & Segre, 2011). This approach allows for a deeper understanding of how the skin's microbial balance impacts health conditions like acne, eczema, and skin infections. Saliva tests: Saliva microbiome testing is a non-invasive approach to assess the bacterial communities in the mouth, offering insights into oral and overall health. Through next-generation sequencing, saliva samples can reveal significant shifts in microbial composition, serving as early biomarkers for health conditions. For example, Aas et al. (2005) demonstrated that saliva microbiome testing could reveal distinct bacterial profiles associated with oral diseases, suggesting its importance in both oral and systemic health management. Stool tests: Stool microbiome testing evaluates the gut’s microbial composition by analysing bacteria, viruses, and fungi in stool samples. This non-invasive test helps identify microbial imbalances (dysbiosis) linked to conditions like irritable bowel syndrome, inflammatory bowel disease, and metabolic disorders. By using next-generation sequencing, it reveals the diversity and abundance of gut microbes, which can inform insights into digestive, immune, and even mental health. Zhernakova et al. (2016) highlighted its potential in detecting gut-related health issues and promoting personalised healthcare strategies. Comprehensive clinical tests: In some cases, healthcare providers may recommend a more comprehensive testing that goes beyond the standard saliva and stool samples which include blood tests or even tissue biopsies; particularly when chronic conditions are present. These approaches can hold valuable information regarding systemic infections or localised imbalances in microbiota, which can significantly aid in the management of diseases such as inflammatory bowel disease and even cancer. (Schulfer & Blaser, 2015) Conclusion By testing our microbiome, we dive into important insights of our overall health by identifying imbalances in microbial communities, known as dysbiosis, which are interlinked to various health conditions. Understanding our microbiome composition allows for customised dietary and lifestyle adjustments to restore balance, as specific gut bacteria are essential for digestion, immune function, and mood regulation. (Zhernakova et al., 2016; Young, 2017) Advancements in microbiome research show that testing can aid in managing chronic diseases by guiding personalised treatment and dietary plans based on an individual's microbial profile, improving clinical outcomes and overall well-being (Lloyd-Price et al., 2016; Hu et al., 2021). Regular testing can optimise health, particularly concerning the gut-brain axis and metabolic health. References Aas, J. A., Paster, B. J., Stokes, L. N., Olsen, I., & Dewhirst, F. E. (2005). Defining the normal bacterial flora of the oral cavity. Journal of Clinical Microbiology, 43(11), 5721-5732. https://doi.org/10.1128/JCM.43.11.5721-5732.2005 Lloyd-Price, J., Abu-Ali, G., & Huttenhower, C. (2016). The healthy human microbiome. Genome Medicine, 8(51), 1-11. https://doi.org/10.1186/s13073-016-0307-y Schulfer, A., & Blaser, M. J. (2015). Risks of antibiotic exposures early in life on the developing microbiome. PLoS Pathogens, 11(7), e1004903. https://doi.org/10.1371/journal.ppat.1004903 Zhernakova, A., et al. (2016). Population-based metagenomics analysis reveals markers for gut microbiome composition and diversity. Science, 352(6285), 565-569. https://doi.org/10.1126/science.aad3369

Find answers to common questions about Sequential's microbiome testing services for personal care products. Learn more about our process, benefits, and certifications. Frequently Asked Questions Our Testing Platform Recruitment Targeted Microbiome Panels Microbiome Claims & Certification Sequencing Technology Our Validated Collection System in vivo Microbiome Testing What is Sequential’s microbiome testing platform? Sequential has developed the gold standard test for microbiome-friendly products, in vivo (in, or on, humans). Finally, we can give some certainty about if a product is truly affecting the microbiome. We offer a complete end-to-end solution to support microbiome-friendly claims. From consultancy and study design to our proprietary microbiome testing kits. We analyse, interpret and report our findings to meet your needs. What are Sequential’s testing capabilities? At Sequential, we have carried out extensive research on the microbiome, having captured over 25,000 microbiome samples. We pride ourselves in being the testing partner you need, with all the expertise and industry knowledge to support you in your success. Whether you have developed a product for skin care, scalp care, intimate care or oral care we have the expertise and capabilities to test it for you. Why is it necessary to test the microbiome? Longitudinal in vivo studies are not just a bonus for cosmetic and personal care brands to have within their repertoire. It is crucial to acknowledge that uncovering the real impact of products within the real context of the human body is the only way to understand how a product is functioning. At present, there are no regulations for microbiome-related formulas that brands and formulators can follow, however, it has been universally acknowledged that the in vivo method of conducting clinical studies is becoming critical and paramount to getting marketing claims through. When regulations are introduced, which may be imminent, the in vitro system will find itself lacking, resulting in limited claims and certifications that do not hold their value. This is why, we at Sequential strive to offer an in vivo approach, knowing full well that we want our client's claims to be significantly backed by scientific and quantifiable data. Can Sequential support formulators, raw ingredient suppliers & brands? Sequential is the industry leader in microbiome testing, claims substantiation and support for brands formulating products for skin, scalp, intimate care and oral care. Recognized as the most significant testing solution in the industry, Sequential offers a full end-to-end platform from study design, recruitment and testing, to analysis, and support on formulation development and certification. Sequential’s testing is exclusively managed in-house and with human clinical subjects, in vivo. As an ally in research and development to top global brands and household names, Sequential supports its journey to delivering consumer-driven products backed in science. Is all of Sequential’s analysis carried out in-house or is it dispersed to a third party? All of our analysis is carried out in-house by our expert bioinformaticians allowing for a faster turn-around time on your study and exclusive access to our team of scientists and formulation experts.