Paula's Choice azelaic acid: what to know

Azelaic acid helps keep pores from becoming clogged and has anti-inflammatory activity. Those actions can make it useful in routines for acne-prone skin and visible redness, while its effect on pigment production may gradually improve marks left after spots. Results are progressive rather than immediate.

A Paula's Choice formula is a cosmetic product, not automatically interchangeable with a prescribed azelaic acid medicine. The complete formula matters: check the current package for other active ingredients, because combining it with retinoids, exfoliating acids or benzoyl peroxide may increase dryness, stinging or peeling.

Patch-test a small area first. If your skin remains comfortable, apply a thin layer to clean, dry skin at the frequency stated on the product label. Starting less often can make it easier to judge tolerance. Avoid the eyelids, lips, nostrils and broken skin, and wash your hands after application.

Use a simple moisturiser if the area feels dry and apply broad-spectrum sunscreen during the day, especially when treating uneven tone. Add only one new active at a time. If you already use prescription acne or rosacea treatment, ask the prescriber or pharmacist where this product fits in the routine before layering them.

Mild tingling, dryness or temporary redness can occur when starting azelaic acid. Stop using the product and seek prompt medical advice if burning is strong, the skin becomes markedly swollen or blistered, or a rash continues after the product is washed off. Get urgent help for facial swelling, wheezing, breathing difficulty or widespread hives, which can signal a serious allergic reaction.

Ask whether your concern looks more like acne, rosacea, irritation or another condition; whether your current retinoid or exfoliant should be used on alternate days; and which changes would mean stopping treatment. Mention pregnancy, plans for pregnancy, breastfeeding, eczema and previous reactions to skincare so the clinician can tailor the routine.