The Ordinary Azelaic Acid Suspension 10% Review

Azelaic acid is the odd one out among the actives on this site. It is the only one you can buy over the counter that also exists as two separate FDA-approved prescription drugs, and it is the only strong ingredient dermatologists routinely hand to rosacea-prone skin. The Ordinary sells the cheapest version there is — a stated 10% in a silicone suspension, for about the price of a sandwich — and it is the product people write to us about by name more than any other acid. That is why it gets a page of its own rather than a row in the azelaic acid roundup, where it happens to be the top pick.

A word on what this review is. We have not used this product, and we do not review by using things — no lab, no panel, no “I tried it for six weeks.” What we did instead is read the brand’s own ingredient list, pH and claims off its product page, read the Amazon listing our button links to, and then set both against the two FDA-approved azelaic acid labels and the published reviews. Every one of those is linked in the Sources block; the method is spelled out in how we pick. What you get is a review of what is in the tube, what the evidence says that molecule can do at that strength, and who should buy it. What you do not get is a description of how it felt on our face.

The verdict in one paragraph

If redness, post-acne marks or uneven tone is your complaint, this is the cheapest honest way into an ingredient with real drug evidence behind it, and the label backs that up: a printed 10% azelaic acid, seventeen ingredients, a stated pH of 4.00 to 5.00, no fragrance in the list, and a price that makes a failed experiment cost almost nothing. The caveats are equally plain. Ten percent sits below both prescriptions — a 15% gel for rosacea and a 20% cream for acne — and The Ordinary publishes no clinical trial of this formula, so you are buying the right molecule at an unproven strength. The silicone suspension that makes a 10% load possible at this price is also the reason people describe grit and pilling, and it is the single most common reason they stop. And the brand’s conflict list is far more restrictive than the evidence warrants. None of that changes the recommendation for the skin it was built for; it changes who else should buy something different, which we get to below.

At a glance

The Ordinary Azelaic Acid Suspension 10%

Stated active: 10% azelaic acid (free acid, not a derivative). Ingredients: 17, no fragrance in the list. Brand-stated pH: 4.00–5.00.

Sizes: 30 mL and 100 mL on the brand’s site. The Amazon listing our button links to is the 30 mL.

$10.98 · View on Amazon

$12.2010% off

Price as of September 26, 2026. #ad How we’re funded

Product image supplied by Amazon.

What is on the label

The Ordinary publishes its full ingredient list, which is the first thing that separates it from most of the shelf. Read from the brand’s product page on September 26, 2026, in the order printed, it is: Aqua (Water), Isodecyl Neopentanoate, Dimethicone, Azelaic Acid, Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer, Dimethyl Isosorbide, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Polysilicone-11, Isohexadecane, Tocopherol, Trisodium Ethylenediamine Disuccinate, Isoceteth-20, Polysorbate 60, Triethanolamine, Ethoxydiglycol, Phenoxyethanol, Chlorphenesin. Seventeen ingredients, and the interesting thing is the order.

• Azelaic acid is fourth, not second — behind water and two emollient-and-silicone ingredients. That is not a red flag; it is physics. Azelaic acid is poorly soluble in water, so a 10% load cannot simply be dissolved the way niacinamide can. It has to be carried.
• Isodecyl neopentanoate, dimethicone, the dimethicone crosspolymer, polysilicone-11 and isohexadecane are that carrier: a light ester plus a silicone system that holds solid acid particles evenly in place. This is the whole reason the word “suspension” is on the front of the tube, and it is why the finish is a silicone-smooth film rather than a watery serum. It is also, honestly, why some people cannot get on with it.
• Dimethyl isosorbide and ethoxydiglycol are penetration solvents — they help the acid move off the film and into the skin rather than sitting on top of it.
• The hydroxyethyl acrylate copolymer is the gelling agent that gives the cream-like body; isoceteth-20 and polysorbate 60 keep the water and oil phases together; triethanolamine adjusts the pH upward, which is how a carboxylic acid ends up at a skin-friendly 4.00 to 5.00 rather than sharply lower.
• Tocopherol is vitamin E, present as an antioxidant; trisodium ethylenediamine disuccinate is a chelator that keeps trace metals from destabilizing the formula; phenoxyethanol and chlorphenesin are the preservatives.

Absent from the list: fragrance, essential oils, drying alcohol and plant oils. The brand states the formula is alcohol-free, vegan and gluten-free, and — unlike its niacinamide serum — it does not claim to be silicone-free, because it plainly is not. It also does not carry a fragrance-free claim, though no fragrance appears in the seventeen ingredients. The one number worth dwelling on is the pH of 4.00 to 5.00. For an AHA that figure decides whether the product works at all; for azelaic acid it matters far less, because azelaic acid is not a surface exfoliant working by pH the way glycolic acid is. A mildly acidic pH is simply comfortable skin territory, and it is one more reason reactive skin tends to tolerate this better than a glycolic acid toner.

What a 10% actually buys you

Here is the context the marketing never gives you, and it is the most useful thing on this page. Azelaic acid is not only a cosmetic ingredient — it is a prescription drug, twice over, and both labels are public.

• The 15% gel is approved for the inflammatory papules and pustules of mild to moderate rosacea, applied twice daily. Two identical 12-week, multicenter, randomized, double-blind, vehicle-controlled studies in 664 patients cut inflammatory lesions by 57.9% against 39.9% for vehicle in one trial and 50.0% against 38.2% in the other, with investigator-rated success — clear, minimal or mild — reached by 61% of treated patients against 40% and 48% on vehicle.
• The 20% cream is approved for mild-to-moderate inflammatory acne vulgaris, also twice daily, and its label states that improvement occurs in the majority of patients with inflammatory lesions within four weeks.

The Ordinary’s suspension is a 10%. It is the same molecule, at two-thirds the rosacea strength and half the acne strength, and no trial of this formulation exists — the brand publishes none, and we found none. That is the honest frame for everything below: you are buying a well-evidenced ingredient at a strength the evidence does not cover, for a fraction of a prescription co-pay. For mild unevenness, post-acne marks and the general look of redness that is a sensible trade. For inflamed, pustular rosacea or moderate acne it is the wrong tool, and the right move is a conversation about the 15% gel instead of a second tube of this.

The flip side of a lower strength is tolerance, and the prescription labels quantify that too. On the 15% gel, burning, stinging or tingling was reported as mild by 16% of patients, moderate by 9% and severe by 4%, against 2% mild on vehicle; pruritus ran 6%, 4% and 1%. On the 20% cream, pruritus, burning, stinging and tingling each occur in roughly 1 to 5% of patients. So azelaic acid is well tolerated by most people but not sting-free for everyone, and a 10% is the version most likely to be comfortable on skin that has reacted badly to acids before.

What the evidence says it does

Three jobs, with three different strengths of evidence behind them, and it is worth being precise about which is which.

Redness and rosacea is the strongest. The American Academy of Dermatology names azelaic acid among the treatments used for rosacea, and the 15% gel’s approval rests on the two trials above. This is also the reason azelaic acid keeps turning up in advice for skin that cannot tolerate anything else: it reduces inflammation without the barrier cost of an exfoliating acid or a retinoid.

Pigmentation — post-acne marks, melasma, general unevenness is the reason most people buy this tube, and the mechanism is well described in the published review we cite: azelaic acid interferes with tyrosinase, the enzyme step in pigment production, and appears to act selectively on overactive pigment cells rather than on normal ones. That selectivity is why it is a standard alternative where hydroquinone is unsuitable, and it is why the 20% cream’s label lists depigmentation only as a rare event rather than an expected one. Our azelaic acid for dark spots guide covers what to expect, and over how long.

Acne is the weakest of the three, and we say so on the page dedicated to it. Azelaic acid has genuine antibacterial activity and normalizes keratinization — the 20% cream’s label says exactly that, while also stating that the exact mechanism of action is not known — but in the 2024 AAD acne guideline azelaic acid is a conditional recommendation, where topical benzoyl peroxide and topical retinoids are strong ones. If acne is the main problem, start at azelaic acid for acne and expect to be pointed at adapalene first.

The brand’s claims, checked against the page

The Ordinary calls this a “cream-like brightening formulation that improves the look of uneven skin tone and visibly improves skin texture,” targeting textural irregularities, dullness, the look of redness and uneven skin tone. All four are defensible — they are carefully worded around appearance rather than treatment, which is the correct line for a cosmetic. Three specifics deserve a closer look.

• “A natural and effective antioxidant, which means it’s gentle enough for daily use.” The conclusion does not follow from the premise. Plenty of antioxidants are not gentle, and plenty of gentle ingredients are not antioxidants. Azelaic acid is generally well-tolerated — the prescription numbers above show that — but it is tolerated because of how it acts on inflammation, not because it is an antioxidant. Treat this sentence as marketing and the tolerance data as the reason.
• “Non-comedogenic and suitable for all skin types.” The page does not publish the study behind the non-comedogenic claim, unlike the brand’s niacinamide serum, which cites a 35-subject, 8-week test. “Suitable for all skin types” is a stretch in one direction: very dry skin will find a twice-daily silicone film either welcome or suffocating, and there is no way to know which without trying it.
• The conflict list. The brand tells you not to use this with direct acids, direct vitamin C, niacinamide powder, peptides, copper peptides, EUK or retinoids. That is a long list for one of the most layerable actives there is, and it reads as a rule written to stop people stacking six of the brand’s own droppers rather than as chemistry. Azelaic acid and niacinamide are a well-behaved pair. Azelaic acid and vitamin C have a real but manageable overlap, and splitting them morning and night settles it. Retinol on the same night is a tolerance decision, not an incompatibility. Following the brand’s instruction costs you nothing, but do not take it as evidence the combinations are harmful.

Texture, the silicone base, and the pilling problem

We will not describe the feel, because we have not felt it. What the ingredient list tells you is this: a water base carrying solid acid particles in a silicone-and-ester system will behave like a thin, silky cream that dries to a faint film, with a slight graininess where the suspended acid sits. Both of those are design consequences, not defects. The film is why a 10% load stays put; the grain is the acid itself.

The consequence is the single most common complaint about this product, and the one that makes people quit: it rolls up into little balls under sunscreen or makeup. Silicone films and the layers that go on top of them are a known bad pairing, and in nearly every case the fix is the amount. A pea-sized amount covers the face; the brand’s own direction is “a small amount.” Spread it thin rather than dabbing it thick, wait a full minute before the next layer, and press that layer on rather than rubbing it in circles. If it still pills at a pea, the base is the problem rather than your technique — and that is exactly what the two alternatives below exist for.

Price, sizes and where to buy it

This is the cheapest credible azelaic acid on the market, and it would still be the value pick at twice the price — the smoother Paula’s Choice booster carries the same stated 10% for several times the cost per milliliter. The brand sells a 30 mL and a 100 mL. Buy the 30 mL first: you use this twice a day over the whole face, so it goes faster than a dropper serum, but the texture is the thing most likely to end the experiment, and a 100 mL of something you dislike is an expensive lesson. The Amazon listing our button points at is the 30 mL, and the price on the button is Amazon’s live price, refreshed daily and stamped with the date, rather than a number we typed in once. We have no incentive to steer you to one listing over another.

Who it is for

Buy it if the complaint is post-acne marks, general unevenness, melasma or the look of redness, and you want the molecule the prescriptions use at the lowest price it sells for. It is an unusually good first treatment for reactive and rosacea-prone skin, because it does not sun-sensitize the way a retinoid does, it does not depend on a low pH the way an AHA does, and it layers with almost everything. It is also the right pick if you already run an exfoliating acid and want a second active that will not compound the irritation.

Buy something else in three cases. If the problem is inflamed, pustular rosacea or moderate acne, a 10% cosmetic is under-powered for it — the 15% gel and the 20% cream are approved drugs and a prescription is the better spend. If silicone films and pilling are a standing problem in your routine, this formula will not be the exception; a water-based azelaic is the answer. And if what you actually want is barrier support, oil control and general evenness rather than a treatment for a specific mark or flush, then niacinamide is the cheaper, easier ingredient, and azelaic acid vs niacinamide makes that call properly.

How to use it

A pea-sized amount on clean, dry skin, morning and evening as the brand directs, after any water-based serum and before moisturizer — the thinnest-to-thickest order the American Academy of Dermatology describes for every routine. Avoid the eye contour. Sunscreen in the morning, which the brand’s directions also ask for: azelaic acid does not sun-sensitize the way a retinoid does, but the tone and mark benefits you are paying for are undone by unprotected sun. Reactive skin should start once daily on alternate days and build up, and everyone should patch test first, as the brand’s own page asks. Then leave it alone for twelve weeks before deciding whether it did anything — the rosacea trials ran twelve weeks, the acne label measures inflammatory lesions at four, and pigment is slower than either.

Against the alternatives

Two products compete with it directly, and both are ranked in full in best azelaic acid products.

Paula’s Choice BOOST 10% Azelaic Acid Booster is the like-for-like upgrade: the same stated 10% of free azelaic acid, plus salicylic acid and licorice, in a cream-gel built to disappear into a layered routine rather than sit on it as a film. What you are paying several times more for is texture, and if pilling is the specific reason you have abandoned azelaic acid before, that is a real thing to pay for. The added salicylic acid is a bonus only if you are not already running a separate BHA.

Naturium’s 10% needs a clearer distinction than most roundups give it, and it is the most useful comparison on this page. Read off the brand’s own ingredient list, its active is potassium azeloyl diglycinate — a glycinated azelaic derivative, water-soluble where azelaic acid is not, alongside niacinamide and ethyl ascorbic acid. The brand now sells it as “Azelaic Acid Derivative Complex 10%,” which is the accurate name. That derivative is genuinely more comfortable and dissolves into a light cream instead of needing a silicone suspension, and for tone and marks on skin that hates silicone films it is a sensible buy. But it is not the molecule the rosacea and acne trials used, and nobody should assume a 10% derivative equals a 10% of the free acid. If you want the studied ingredient, The Ordinary’s suspension and the Paula’s Choice booster are the two that carry it.

Bottom line

The Ordinary Azelaic Acid Suspension 10% earns its place on the label rather than the marketing. It is the right molecule, honestly disclosed at a stated strength, in a seventeen-ingredient formula with no fragrance and a published pH, priced so low that finding out whether azelaic acid suits you costs almost nothing. Know that 10% sits below both prescription strengths and that no trial of this formula exists; know that the silicone suspension is the price of that strength at that cost, and that a pea-sized amount is the difference between a smooth film and a pilling mess; and ignore the conflict list unless your skin tells you otherwise. For marks, unevenness and the look of redness — especially on skin that cannot take an acid or a retinoid — it is still the first tube we would point most people at. For inflamed rosacea or real acne, the prescriptions exist, and we would rather you spent the money there. The rest of the brand’s range, sorted by what each bottle is actually for, is in The Ordinary, decoded.