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
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)
Korean authors et al., Anti-acne and Tolerance Assessment of a Cleanser Containing Salicylic Acid, Gluconolactone and Niacinamide, Asian Journal of Beauty and Cosmetology 2024;22(3):383-391 — 4-week clinical trial (n=43 oily acne-prone): significant reduction in inflammatory + non-inflammatory acne lesions and sebum content; 2-week safety (n=39 sensitive skin) confirmed tolerance
Korean authors et al., A split-face study to evaluate the efficacy of a dissolving microneedle-encapsulated niacinamide skin patch for the reduction of facial hyperpigmentation, Archives of Aesthetic Plastic Surgery 2022;28(4):113-118 — 17-patient 2-week split-face RCT: DMN niacinamide patch significantly reduced epidermal pigmentation score and melanin score vs untreated control side
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.