StoryInColor
Ingredient

Azelaic acid: the gentle multi-tasker for redness, acne, and pigmentation

6 min readingredient

Azelaic acid is one of the most under-utilised ingredients in skincare relative to what it actually does. It treats acne, redness, and pigmentation in one product with minimal irritation, and it is one of the few actives safe for use during pregnancy and breastfeeding. The 2010s saw it move from prescription-only into over-the-counter formulations, and it has become a quiet workhorse in modern dermatology.

What it does, in one line

A dicarboxylic acid that treats acne, redness, and pigmentation simultaneously with minimal irritation, safe during pregnancy.

Best forsensitiverosacea-pronepigmentation-proneacne-prone

What azelaic acid does

Azelaic acid has three independent mechanisms that produce visible effects together. First, it is antimicrobial against Cutibacterium acnes (the bacteria implicated in acne). Second, it inhibits tyrosinase (the enzyme that produces melanin), evening pigmentation and treating post-inflammatory hyperpigmentation. Third, it has anti-inflammatory effects that calm rosacea-related redness.

The combination is why azelaic acid is increasingly prescribed for rosacea (where redness, sensitivity, and sometimes mild acne overlap), for post-inflammatory hyperpigmentation in darker skin tones (where treating both the acne and the residual pigment matters), and for sensitive skin that cannot tolerate retinol or salicylic acid.

How to use azelaic acid

Over-the-counter concentrations are typically 10% (e.g. The Ordinary Azelaic Acid Suspension 10%). Prescription concentrations are 15% (Finacea) or 20% (Azelex). The OTC strength is sufficient for mild-to-moderate concerns; prescription strength is reserved for more severe rosacea or melasma.

Apply morning, evening, or both. Azelaic acid layers cleanly with most other ingredients including niacinamide, hyaluronic acid, and vitamin C. It can be used during the day with SPF over it.

It can produce a mild tingling sensation in the first few applications; this typically resolves within 1-2 weeks as the skin acclimates. Persistent burning or visible irritation suggests sensitivity and is a reason to discontinue or step down to a lower concentration.

Who benefits most from azelaic acid

Rosacea-prone skin: azelaic acid is one of the most-recommended ingredients for rosacea management, calming the redness and the inflammatory acne component.

Darker skin tones with post-inflammatory hyperpigmentation: azelaic acid treats both the acne that causes PIH and the resulting pigmentation without the photo-sensitivity issues of stronger AHAs.

Pregnancy and breastfeeding: azelaic acid is widely considered safe during pregnancy (always confirm with your doctor). It is one of the few effective acne and pigmentation treatments available during this window.

Sensitive skin that cannot tolerate retinol: azelaic acid offers similar pigmentation and acne benefits with significantly less irritation.

Try Skincare Glow

Skincare Glow reads your skin and identifies whether azelaic acid suits your case. Particularly useful for redness-prone or sensitive skin.

Try Skincare Glow

Keep reading