Azelaic Acid
A multitasking dicarboxylic acid that fights acne, fades pigmentation, and calms rosacea — the dermatologist's secret weapon.
What Is Azelaic Acid?
Azelaic acid is a naturally occurring dicarboxylic acid produced by the yeast Malassezia furra (a normal skin commensal) and found in grains like wheat, rye, and barley. Initially developed as a prescription treatment for rosacea and acne, it has gained popularity in OTC formulations (typically 10% vs. the prescription 15–20%). Azelaic acid works through multiple mechanisms: it's antimicrobial against Cutibacterium acnes, anti-inflammatory (reducing the redness and swelling of rosacea), and a tyrosinase inhibitor that specifically targets hyperactive melanocytes. This last property makes it uniquely effective for post-inflammatory hyperpigmentation and melasma — it fades dark spots without lightening normal skin. For those who can't tolerate retinoids or strong AHAs, azelaic acid is often the answer.
Key Benefits
- Treats acne by reducing C. acnes bacteria and normalizing keratinization
- Fades post-inflammatory hyperpigmentation and melasma effectively
- Reduces redness and inflammation associated with rosacea
- Evens out skin tone without bleaching normal-pigmented skin
- Gentle enough for sensitive and rosacea-prone skin types
- Safe for use during pregnancy (consult your doctor)
How to Use Azelaic Acid
Apply a 10% azelaic acid gel or cream once or twice daily after cleansing. For sensitive skin, start with once daily (evening) and build up. A pea-sized amount covers the full face — more is not better. Azelaic acid can cause mild tingling or itchiness initially; this typically subsides within 1–2 weeks. It can be used morning and/or evening, but if using in the AM, follow with SPF. For targeted treatment of dark spots, apply as a spot treatment in addition to full-face application. Consistent use for 8–12 weeks is needed for visible results.
Pairs Well With
Pairs well with niacinamide (brightening duo), hyaluronic acid (hydration), and centella asiatica (soothing). Niacinamide + azelaic acid is a powerhouse combo for pigmentation.
Avoid Combining With
Avoid mixing with strong AHAs, BHAs, or retinol in the same step. The low pH of some acids can reduce azelaic acid's efficacy. Use azelaic acid and other actives at different times of day or on alternating nights.