Comparison between 1% tretinoin peeling versus 70% glycolic acid peeling in the treatment of female patients with melasma.
randomized, double-blind
EVIDENCE COMPARISON
StrongEvidence suggests glycolic acid and tretinoin perform equally for improving skin tone through pigmentation reduction.
Effect ratio
Favored
Study
Comparison
Limits: Includes subjective endpoint
Direct comparison with enough study context for public-facing comparative wording, with limits noted for includes subjective endpoint.
The published evidence does not currently show a major generalization warning beyond the listed study limits.