Self‐applied topical interventions for melasma: a systematic review and meta‐analysis of data from randomized, investigator‐blinded clinical trials
randomized, split-face
EVIDENCE COMPARISON
DirectionalTranexamic Acid
vs Cysteamine
for Pigmentation Reduction
Early or indirect evidence suggests tranexamic acid and cysteamine show equal effectiveness for reducing pigmentation and improving skin tone, based on indirect comparison.
1.00x
Effect ratio
Neither
Favored
4
Studies
Indirect
Comparison
This is an indirect comparison — the two ingredients were not tested head-to-head in the same trial. The ratio is derived from separate studies against a common comparator.
Tone
How to read this claim
Kept public as exploratory because it indirect comparison; includes estimated measurement; early-stage evidence tier.
Some study-specific context may affect how broadly this comparison generalizes.
1 linked trialIngredient trial
Source Studies (4)
The effectiveness and safety of 3% tranexamic acid cream vs. 4% hydroquinone cream for mixed-type melasma in skin of color: a double-blind, split-face, randomized controlled trial.
randomized, double-blind, split-face
… and efficacy of niosomal and conventional tranexamic acid/niacinamide vs. hydroquinone creams in melasma: A randomized, double-blind, case-controlled clinical …
randomized, double-blind
Role of Antioxidants in Melasma: A Systematic Review
randomized, double-blind