Why Tranexamic Acid Has Become a Go-To for Stubborn Melasma
By Michael C. · Written and reviewed by Michael C.
Tranexamic Acid · Published 2026-05-29 · 11 min read · 2195 words · Updated 2026-09-08
Tranexamic acid tackles melasma from an angle most other brightening ingredients can't reach, by calming the blood-vessel-driven inflammation that helps trigger it.
Key takeaways
- Tranexamic acid was originally a medical drug used to reduce bleeding, later found to also help calm melasma.
- Topically, it works by reducing the vascular and inflammatory triggers that drive melanocyte overactivity in melasma.
- It's typically used topically at around 2 to 5 percent, and is also sometimes prescribed orally under medical supervision.
- It complements rather than replaces other pigmentation treatments, often layered with vitamin C, azelaic acid or niacinamide.
- Melasma is notoriously stubborn and sun-reactive, so consistent sunscreen use is arguably more important than the active itself.
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Source: SkinLabs Editorial Team ()
Cover image: sarah b — credit