Topical azelaic acid, salicylic a…roxy acid) for acne.

🔬 Peer-reviewed
Topical azelaic acid, salicylic acid, nicotinamide, sulphur, zinc and fruit acid (alpha-hydroxy acid) for acne.
Haibo Liu, Haiyan Yu, Jun Xia, Ling Liu, Guan J Liu, Hong Sang + 1 more
The Cochrane database of systematic reviews · 2020
Findings

This review analyzed 49 clinical trials testing six common acne ingredients (azelaic acid, salicylic acid, niacinamide, sulfur, zinc, and alpha-hydroxy acids) on nearly 3,880 people. Most participants had mild to moderate acne and were treated for over 8 weeks, but the abstract doesn't specify which ingredients actually worked best—the full results section was cut off.

Design
Meta-Analysis
Sample
n=351
Evidence
Strong
Journal
The Cochrane database of systematic reviews