Azelaic Acid vs Salicylic Acid
Which is right for your skin?
Both clear breakouts, differently: salicylic acid dives into oily pores to clear blackheads and whiteheads; azelaic acid calms redness, fades post-acne marks, and suits sensitive or rosacea-prone skin. Clogged, oily skin → salicylic; red, reactive, mark-prone skin → azelaic.
Calms redness, fades acne marks, and clears bumps, all without aggravating sensitive skin. Pregnancy-safe.
Goes into your pores and dissolves the oil and dead skin clogging them. Best for blackheads, whiteheads, and oily, acne-prone skin.
Can you use Azelaic Acid and Salicylic Acid together?
We have no documented layering conflict between Azelaic Acid and Salicylic Acid. Introduce one at a time and patch-test.
You want anti-acne, brightening, anti-inflammatory. Calms redness, fades acne marks, and clears bumps, all without aggravating sensitive skin. Pregnancy-safe.
You want anti-acne, exfoliating. Goes into your pores and dissolves the oil and dead skin clogging them. Best for blackheads, whiteheads, and oily, acne-prone skin.
Cited research
Feng Y et al., Azelaic Acid: Mechanisms of Action and Clinical Applications, Clinical, Cosmetic and Investigational Dermatology 2024;17:2359-2371 — antibacterial, anti-keratinizing, antimelanogenic, antioxidant, and anti-inflammatory; FDA-approved for papulopustular rosacea
King A et al., A systematic review to evaluate the efficacy of azelaic acid in the management of acne, rosacea, melasma and skin aging, Journal of Cosmetic Dermatology 2023;22(10):2650-2662 — azelaic acid more effective than vehicle for rosacea, acne, and melasma; aging evidence limited
Liu H et al., Topical agents for acne (covers azelaic arm), Cochrane Database of Systematic Reviews 2020;5:CD011368 — conclusion: clinical benefit is unclear
Sieber MA, Hegel JK, Azelaic acid: properties and mode of action, Skin Pharmacology and Physiology 2014;27 Suppl 1:9-17
CIR Final Report on the Safety Assessment of Dicarboxylic Acids, Salts, and Esters (covers azelaic acid as C9 dicarboxylic acid), International Journal of Toxicology 2012
Iraji F et al., Efficacy of topical azelaic acid gel in the treatment of mild-moderate acne vulgaris, Indian Journal of Dermatology, Venereology and Leprology 2007;73(2):94-96 — double-blind RCT: 20% azelaic acid gel reduced total lesion count 60.6% vs 19.9% placebo (P=0.002)
Thiboutot D, Thieroff-Ekerdt R, Graupe K, Efficacy and safety of azelaic acid (15%) gel as a new treatment for papulopustular rosacea: results from two vehicle-controlled, randomized phase III studies, Journal of the American Academy of Dermatology 2003;48(6):836-845 — AzA gel statistically superior to vehicle (58% vs 40% and 51% vs 39% inflammatory-lesion reduction)
Liu Y et al., Clinical Efficacy of a Salicylic Acid-Containing Gel on Acne Management and Skin Barrier Function: A 21-Day Prospective Study, Journal of Cosmetic Dermatology 2025;24(7):e70353 — salicylic acid gel reduced acne lesions, regulated sebum, improved hydration and barrier function
Ye R et al., 2% supramolecular salicylic acid hydrogel vs. adapalene gel in mild to moderate acne vulgaris: multicenter, randomized, evaluator-blind, parallel-controlled trial, Journal of Cosmetic Dermatology 2024;23(6):2125-2134 — 2% SSA hydrogel was equally effective as adapalene gel for mild-to-moderate acne
Liu H et al., Topical azelaic acid, salicylic acid, nicotinamide, sulphur, zinc and fruit acid for acne, Cochrane Database of Systematic Reviews 2020;5:CD011368 — conclusion: clinical benefit is unclear
MFDS Approved Functional Cosmetic Active — Salicylic Acid (anti-acne). Korean Ministry of Food and Drug Safety, Cosmetic Functional Active Ingredient List — the sole approved anti-acne functional cosmetic active in the Korean Functional Cosmetics Codex
CIR Amended Safety Assessment of Salicylic Acid and Salicylates as Used in Cosmetics (Johnson et al.), final amended report April 2019
SCCS Opinion on the safety of cosmetic ingredient salicylic acid (CAS 69-72-7) - Submission I, SCCS/1601/18, final version 21 December 2018
Arif T, Salicylic acid as a peeling agent: a comprehensive review, Clinical, Cosmetic and Investigational Dermatology 2015;8:455-61
Every entry points to a specific paper or regulatory document. See methodology for what each outcome label means.