Azelaic Acid vs Niacinamide
Which is right for your skin?
Both calm redness and fade marks gently. Azelaic acid is stronger for acne and rosacea-type redness; niacinamide is the do-everything barrier supporter. Sensitive, breakout-prone skin often uses both.
Calms redness, fades acne marks, and clears bumps, all without aggravating sensitive skin. Pregnancy-safe.
A multitasker that calms redness, evens out skin tone, and helps oily skin balance out. One of the safest do-a-little-of-everything ingredients.
Can you use Azelaic Acid and Niacinamide together?
Yes, Azelaic Acid and Niacinamide are documented to pair well together.
You want anti-acne, brightening, anti-inflammatory. Calms redness, fades acne marks, and clears bumps, all without aggravating sensitive skin. Pregnancy-safe.
You want brightening, barrier repair, anti-inflammatory. A multitasker that calms redness, evens out skin tone, and helps oily skin balance out. One of the safest do-a-little-of-everything ingredients.
Cited research
Petrovici AG et al., A Comprehensive Review of Azelaic Acid Pharmacological Properties, Clinical Applications, and Innovative Topical Formulations, Pharmaceuticals (Basel) 2025
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)
Gupta AK, Gover MD, Azelaic Acid (15% Gel) in the Treatment of Acne Rosacea, International Journal of Dermatology 2007
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)
Moro F et al., Skin Cancer Prevention and Antiaging: Role of Nicotinamide, International Journal of Molecular Sciences 2026
Passeron T et al., An Investigator-Blinded, Randomized Trial of a Broad-Spectrum Sunscreen Containing Sclareolide and Niacinamide, Dermatology and Therapy (Heidelberg) 2026
Vergilio MM et al., Topical Formulation with Niacinamide Combined with 5 MHz Ultrasound for Improving Skin Ageing, Current Medicinal Chemistry 2025
Althwanay A, AlEdani EM, Kaur H, Kasapoglu M, Yadavalli R, Nawaz S, Nath TS. Efficacy of Topical Treatments in the Management of Mild-to-Moderate Acne Vulgaris: A Systematic Review. Cureus. 2024;16(4):e57909. — Systematic review found topical niacinamide gel 'safe and significantly effective in decreasing the number of pustules, comedones, and papules', with anti-inflammatory and sebum-reducing properties.
Liu H et al., Topical azelaic acid, salicylic acid, nicotinamide, sulphur, zinc and fruit acid (alpha-hydroxy acid) for acne, Cochrane Database of Systematic Reviews 2020;5:CD011368 — conclusion: clinical benefit is unclear
MFDS Approved Functional Cosmetic Active — Niacinamide (whitening). Korean Ministry of Food and Drug Safety, Cosmetic Functional Active Ingredient List; authorized concentration documented in Jeon JS et al., International Journal of Cosmetic Science 2016;38(3):286-93 (PMID:26564311) per the Korean Functional Cosmetics Codex
CIR Final Report of the Safety Assessment of Niacinamide and Niacin, International Journal of Toxicology 2005;24(Suppl 5):1-31
Bissett DL et al., Niacinamide: A B vitamin that improves aging facial skin appearance, Dermatologic Surgery 2005;31(7 Pt 2):860-5 — 12-week double-blind RCT (n=50) showed 5% niacinamide reduced fine lines, hyperpigmentation, red blotchiness, and sallowness with improved elasticity
Greatens A et al., Effective inhibition of melanosome transfer to keratinocytes by lectins and niacinamide is reversible, Experimental Dermatology 2005;14(7):498-508 — niacinamide reversibly inhibits melanosome transfer at safe concentrations without compromising cell viability
Hakozaki T et al., The effect of niacinamide on reducing cutaneous pigmentation and suppression of melanosome transfer, British Journal of Dermatology 2002;147(1):20-31 — mechanism: niacinamide inhibits melanosome transfer from melanocytes to keratinocytes
Every entry points to a specific paper or regulatory document. See methodology for what each outcome label means.