What Tranexamic Acid does
It interferes with the plasmin pathway that triggers melanocytes after UV exposure and inflammation, damping down the signal to make pigment rather than bleaching existing pigment.
Because the mechanism differs from tyrosinase inhibitors, it stacks well with vitamin C, niacinamide and arbutin.
Worth using if…
- Melasma
- Stubborn post-inflammatory pigmentation
- Sun-driven uneven tone
Safety & watch-outs
- Topical results take 8–12 weeks and require rigorous daily sunscreen or they simply will not show.
- Oral tranexamic acid is a prescription medicine with clotting-related contraindications — that is not the same thing as the serum.
Tranexamic Acid in pregnancy: Ask your doctor
Melasma is common in pregnancy, but topical TXA has limited pregnancy data and the oral form is contraindicated in several conditions. Ask your clinician before using it.
Comedogenic rating: No published rating
No Fulton rating. Ratings come from the published Fulton scale, which was measured on rabbit ears rather than human faces — treat it as a rough signal, not a verdict on a finished formula.
Check a whole formula for pore cloggers →Common questions
Does it work on freckles?
It targets the same pigment pathway, but freckles are largely genetic and will return with sun exposure.
Informational only, not medical advice. Written from public regulatory and dermatology references (EU Cosmetics Regulation annexes, SCCS opinions, CIR reviews, published Fulton-scale data). Concentration, formula and your own skin all change the outcome — consult a clinician for personal concerns.
Related ingredients
All ingredient explainers
AllantoinAlpha ArbutinAvobenzoneAzelaic AcidBakuchiolBenzoyl PeroxideCentella Asiatica ExtractCeramidesCoconut OilDimethiconeGlycerinGlycolic AcidL-Ascorbic AcidLactic AcidNiacinamidePanthenolPeptidesRetinolSalicylic AcidSodium HyaluronateSqualaneTitanium DioxideUreaZinc Oxide