Tranexamic acid: what it does and how to use it
Tranexamic acid targets stubborn discolouration such as melasma and dark marks left after breakouts, and it is gentle enough for most skin.
What it does
- Interferes with signals that switch on pigment production.
- A 2017 meta-analysis of 11 studies (667 people) found tranexamic acid improved melasma scores, alone or added to other treatments. Those studies mixed oral, injected and topical use.
Strength and rules
- Cosmetic serums commonly state 2–5%.
How to use it
- Morning or night; combines well with niacinamide and sunscreen.
- Daily sunscreen matters most for melasma.
Who should be careful
- Topical use is generally well tolerated; oral tranexamic acid is a medicine and needs a doctor.
Sources
General information, not medical advice. If you have a skin condition or are pregnant, ask your doctor.