Azelaic Acid
Azelaic acid is a naturally occurring dicarboxylic acid found in grains such as wheat, barley and rye, and also synthesised for skincare use. It is one of the most versatile and well-tolerated brightening actives available — working on multiple pathways simultaneously, which makes it suitable for acne-prone, redness-prone and hyperpigmentation-focused skin types that may not tolerate more aggressive options.
General Information Only. This page provides educational skincare information and is not medical advice. If you have persistent acne, eczema, rosacea, allergies, skin irritation, pigmentation changes or any medical skin condition, please consult a qualified dermatologist or healthcare professional before changing your skincare routine. Individual results vary. Always patch test new products.
What azelaic acid does
Tyrosinase inhibition (brightening)
Azelaic acid inhibits tyrosinase, the enzyme responsible for melanin production. This helps reduce the appearance of dark spots, post-acne marks and uneven tone over time. It has a selective effect on hyperactive melanocytes.
Gentle exfoliation
Azelaic acid has mild keratolytic properties — meaning it supports the shedding of skin cells, helping to keep pores clearer and skin texture more refined, without the aggressive exfoliation of high-strength AHAs.
Calming and redness reduction
At higher prescription concentrations, azelaic acid is a dermatologist-prescribed treatment for rosacea and acne. At OTC concentrations, it provides supporting calming benefits for redness-prone skin.
Antibacterial properties
Azelaic acid has demonstrated antibacterial activity against Cutibacterium acnes (the bacteria associated with acne), contributing to its use in acne-focused formulations and prescription treatments.
OTC vs prescription — understanding the difference
OTC azelaic acid (up to ~10%): Supports the appearance of skin — brightening, calming, gentle exfoliation. Appropriate for general skincare use. Results are gradual and modest.
Prescription azelaic acid (15–20%): A medical treatment for rosacea and acne. Requires a prescription and medical supervision. Significantly more potent. If you have rosacea, acne or significant pigmentation concerns, speak to a dermatologist about whether prescription-strength azelaic acid is appropriate for you.
Who it suits
Azelaic acid is one of the more broadly suitable active ingredients — it works well for: acne-prone skin (supporting clearer appearance), redness-prone and sensitive skin (its calming properties make it gentler than many other actives), hyperpigmentation and dark spots (particularly post-inflammatory), and those who cannot tolerate AHAs or retinoids.
Azelaic acid pairs well with niacinamide, ceramides and hyaluronic acid. Some initial tingling is normal; persistent irritation should prompt reducing application frequency. Use daily SPF throughout — brightening actives work with, not instead of, sun protection.