Research · 7 min read
AHAs for Pigmentation: 2023 Meta-Analysis
Glycolic and mandelic acids show comparable pigmentation outcomes over 12 weeks.
Updated 11 June 2026 · Reviewed by GlycolicAcid.com.au editorial
A 2023 meta-analysis (9 RCTs, n=612) found no statistically significant difference between glycolic and mandelic acid for melasma at 12 weeks — but mandelic had a lower irritation rate.
Continue reading