ANABIOTICAGlycolic Acid
An alpha-hydroxy acid that can improve texture and discoloration, with effects and risks that rise sharply from home products to chemical peels.
Published Updated Change history
EmergingWhat the evidence says
Glycolic acid is an alpha-hydroxy acid that loosens cohesion between surface skin cells. A double-blind trial of a daily 5% cream found better texture and discoloration than vehicle after three months, but wrinkle improvement did not reach statistical significance.[1]
A 2025 network meta-analysis of randomized photoaging trials found glycolic acid improved roughness, while results differed across endpoints and it carried more adverse reactions than tretinoin in the available comparisons. Chemical-peel reviews for melasma also report possible benefit, but protocols and evidence quality are heterogeneous.[2][3]
A low-strength leave-on cosmetic is not equivalent to a 20% to 70% professional peel. Concentration, pH, contact time, neutralization, skin type, and concurrent retinoids all change both effect and risk; strong peels can cause burns and post-inflammatory pigment changes, particularly in darker skin.[3][4]
FDA guidance warns that alpha-hydroxy acids can increase ultraviolet sensitivity during use and for up to a week after stopping. Daily sun protection and gradual introduction matter, and persistent burning, blistering, or darkening is a reason to stop rather than push through.[5]
Potential benefits
Side effects and cautions
Evidence breakdown
Small trials and reviews suggest improvements in selected photoaging and pigment outcomes, but concentrations, peel protocols, comparators, and adverse-event reporting vary widely.
Read our full methodologyStudies measure texture, discoloration, roughness, wrinkles, and melasma severity.
The evidence is fragmented across small cosmetic-product and clinician-peel trials.
Irritation and sun sensitivity are established, while peel risk depends heavily on strength and technique.
Full source list
- A double-blind randomized clinical trial on the effectiveness of a daily glycolic acid 5% formulation in the treatment of photoaging
Dermatologic Surgery · 1998
- Comparative efficacy and safety of interventions for skin photoaging: a systematic review and network meta-analysis
Journal of Cosmetic Dermatology · 2025
- Chemical peeling for melasma in patients with dark skin: a systematic review
Journal of Cosmetic Dermatology · 2020
- Glycolic acid peels for the treatment of photoaging and pigmentary disorders
Clinical, Cosmetic and Investigational Dermatology · 2013
- Guidance for Industry: Labeling for Cosmetics Containing Alpha Hydroxy Acids
U.S. Food and Drug Administration · 2005