Azelaic Acid: What It Does, the Evidence, Safe Percentages, and Who It's For
Azelaic acid skincare what does it do? It treats mild-to-moderate acne, fades post-inflammatory dark marks and melasma, and reduces the bumps of papulopustular rosacea — at 10% over the counter and 15–20% in prescription formulations. It works through four routes at once: antibacterial, keratolytic, anti-inflammatory, and tyrosinase-inhibiting. That is the short answer; the rest of this piece is the evidence behind it.
What azelaic acid actually is
Azelaic acid occurs naturally — DermNet describes it as a by-product of the metabolism of the yeast Malassezia furfur, and it is also found in grains like wheat, barley and rye. In the follicle it reduces the growth of bacteria such as Cutibacterium acnes by inhibiting protein synthesis; on the skin surface it normalises how keratinocytes proliferate and shed, which is what keeps pores from clogging; and it scavenges free radicals, which is the anti-inflammatory leg.
The fourth route is the one that matters most for skin of colour. Azelaic acid is a tyrosinase inhibitor — it interferes with the enzyme that produces melanin. That is why it is used for postinflammatory pigmentation: the brown marks acne leaves behind after the spot itself has healed.
One thing it does not do: it does not thin the skin, does not cause photosensitivity, and does not bleach normal skin (DermNet). Those three claims circulate constantly in skincare marketing and none of them is supported.
The evidence, claim by claim
Acne. The Cochrane Database published a systematic review of topical azelaic acid for acne in 2020 (Liu et al., CD011368). DermNet’s summary of the trial data is that azelaic acid is probably similarly effective to tretinoin for acne, with milder side effects than more potent therapies — but also notes evidence that it may be less effective than benzoyl peroxide when judged by participants’ own global assessment of improvement. Both halves of that belong in the picture.
Timeline matters: DermNet puts initial improvement at around one month, with maximum results after six months of continuous use. Rosacea patients may need up to 12 weeks before anything visibly changes.
Hyperpigmentation and melasma. Azelaic acid’s tyrosinase inhibition is the mechanism behind its use for melasma and post-acne marks. Ulta’s clinical education team lists post-acne dark spots, uneven tone and melasma among its supported uses, with the caveat that UV exposure and visible light worsen melasma regardless of what you apply.
Rosacea. A 15% gel (Finacea) is approved in the US for papulopustular rosacea and in several European countries for both rosacea and acne; 20% cream (Skinoren) is available in a number of markets (DermNet). Over-the-counter formulas are not equivalent to prescription rosacea treatment — the bumps and pimples respond, persistent flushing less so (Ulta).
Where the evidence is weak. Two honest limits. First, azelaic acid does not treat indented or raised acne scars — only flat discoloration (Ulta). Second, DermNet flags that it may cause hypopigmentation that is more visible in darker skin tones, and worsening asthma has been reported. Neither is common; both are real.
Safe percentages: what’s actually available
| Concentration | Typical form | Regulatory status | Where you’ll find it |
|---|---|---|---|
| 10% | Serum, cream-gel suspension | Over the counter | The Ordinary Azelaic Acid Suspension 10%, Cos De Baha AZ 10% serum |
| 15% | Gel | Prescription (US, EU) | Finacea |
| 20% | Cream, lotion | Prescription in many markets | Skinoren, Azclear, Acnederm |
The percentage is not the whole story — vehicle matters. A 10% serum with niacinamide and panthenol (Cos De Baha AZ) behaves differently on skin than a 10% cream-gel suspension (The Ordinary), and a 20% cream penetrates and irritates differently than a 15% gel. If you are starting out, 10% once daily after cleansing, building to twice daily if tolerated, is the standard introduction pattern; DermNet’s guidance for acne is to apply to affected areas daily at first, then build to twice daily.
Expect tingling or mild peeling in the first two to three weeks. That is normal. Severe redness, scaling, itching or burning is not — stop and get advice (DermNet).
Azelaic acid plays reasonably alongside other actives; for how it sits next to niacinamide, see our niacinamide benefits explainer, and for how to pair it with a retinoid without wrecking your barrier, the retinol beginner’s guide.
Who it’s for, and who should skip it
Good fit: mild-to-moderate inflammatory acne, especially if you also deal with the dark marks breakouts leave behind; uneven tone; papulopustular rosacea; anyone who finds retinoids or stronger AHAs too irritating. It layers reasonably with most routines and does not cause antibiotic resistance.
Skip or be cautious: if you have known azelaic acid hypersensitivity or react to propylene glycol (a common co-ingredient); if you have eczema or very sensitive skin and are introducing multiple actives at once; deep cystic acne, which needs a dermatologist-guided plan rather than an OTC active (Ulta). DermNet also advises consulting a physician if asthma worsens during use.
Daily sunscreen is non-negotiable if you’re using it for pigmentation — not because azelaic acid increases photosensitivity, but because UV will undo the work. We cover why that matters more in Dhaka’s year-round UV than most guides admit in the sunscreen and SPF guide for Bangladesh.
Prices in Bangladesh (checked 12 February 2026)
Prices move; these were the listed prices on the date shown, at the named retailer.
| Product | Concentration | Size | Price (BDT) | Source |
|---|---|---|---|---|
| Cos De Baha AZ Azelaic Acid Serum | 10% | 30ml | ৳1,100 (was ৳1,200) | Beauty Line Bangladesh |
| Cos De Baha AZ Azelaic Acid Serum | 10% | 30ml | ৳1,050 (was ৳1,250) | RuSu |
| The Ordinary Azelaic Acid Suspension | 10% | 30ml | ৳2,540 (was ৳3,200) | Drubotara |
| The Ordinary Azelaic Acid Suspension | 10% | 30ml | ৳2,349 | theordinary.com.bd |
| NINELESS A-Control Serum | 10% | 30ml | ৳1,700 | KoreanShopBD |
| Skinoren Cream | 20% | 30g | ৳1,490 | Well Care Shop |
The 10% serum tier sits around ৳1,050–1,700; The Ordinary’s suspension is priced higher, at ৳2,349–2,540 depending on the seller. Prescription 20% Skinoren, where listed, runs ৳1,490 for 30g — roughly the same money as an imported 10% serum, though in Bangladesh it is commonly sold without a prescription, which is its own question.
The honest bottom line
Azelaic acid is one of the better-evidenced multitaskers in topical skincare — not because it does five things, but because it does three things (bacteria, keratinocyte turnover, melanin production) through mechanisms that have been studied rather than asserted. It is not a miracle: results on acne take a month to show and six months to peak, rosacea can take 12 weeks, and it will not touch a textural scar.
If you are starting, the 10% tier gives you a reasonable test at ৳1,050–1,700. Give it eight weeks before you judge it.
Sources
- DermNet, “Azelaic acid” (last reviewed November 2022)
- Liu H et al., Cochrane Database of Systematic Reviews 2020, CD011368
- MedlinePlus, “Azelaic Acid Topical”
- Ulta Beauty clinical education, “Azelaic Acid Benefits” (updated October 2026)
- Cleveland Clinic, “Azelaic Acid Cream”
- Retailer product pages as linked in the price table (checked 12 February 2026)