Azelaic acid is a naturally occurring dicarboxylic acid used topically to treat acne and rosacea, working through antibacterial, anti-inflammatory, and comedolytic actions. It also inhibits tyrosinase, helping reduce hyperpigmentation.
| Reported effect | How often | Notes |
|---|---|---|
| Burning, stinging, or tingling | Common | Usually mild and transient, often during initial weeks of use |
| Itching (pruritus) | Common | Localized to application site |
| Dryness, scaling, or peeling | Common | Mild local irritation |
| Erythema (redness) | Uncommon | Application-site redness that typically subsides |
| Contact dermatitis | Rare | Allergic or irritant reaction requiring discontinuation |
| Hypopigmentation | Rare | More likely on darker skin tones; lightening of treated skin |
| Worsening of asthma | Very rare | Reported in isolated cases following topical use |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.