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Tranexamic acid (TXA) has gained significant attention in skincare for its ability to treat hyperpigmentation by interrupting both pigment formation and pigment driven inflammation. Originally used medically to reduce bleeding, TXA inhibits plasma activity, a pathway recognised as relevant in pigment regulation. Its long clinical history means TXA enters cosmetic skincare with a stronger evidence base than many commonly used brightening ingredients. As its use grows, understa
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