Paula's Choice Azelaic Acid Booster Review: 10% for Redness, Marks and Bumps

Paula's Choice 10% Azelaic Acid Booster is a sensible pick if your main complaints are redness, leftover acne marks and small bumps. It pairs 10% azelaic acid with salicylic acid and licorice root extract in an oil-free cream-gel that you can use alone or stir into your moisturizer. At $42 it costs far more than The Ordinary's 10% suspension, which feels heavier and more siliconey.

If you want to see how its ingredient list lines up with your own skin type first, you can scan the tube or photograph the label with the ingredient scanner in Pori.

Below we cover what's in the formula, what azelaic acid can and can't do at 10%, how it compares with The Ordinary's version and with prescription azelaic acid, and how to fit it into a routine. This is an ingredient-and-evidence review based on the brands' published information and the dermatology literature, not a hands-on test.

What is Paula's Choice 10% Azelaic Acid Booster?

It's a leave-on azelaic acid treatment built to be flexible. Paula's Choice describes it as a "potent, multi-active azelaic acid cream with salicylic acid" that "visibly clarifies uneven tone, fades acne marks and reduces redness," with a "lightweight, oil-free cream-gel texture" you can "use alone or add to your moisturizer or serum."

All of those points come from the brand's product page and FAQ. Paula's Choice doesn't publish a clinical trial of this exact formula, so the claims are best read as what azelaic acid tends to do, carried by a formula designed to be easy to wear.

What does azelaic acid actually do for skin?

Azelaic acid works on several things at once, which is why it suits people with a mix of breakouts, redness and dark marks. DermNet, the dermatology reference run by New Zealand dermatologists, says it reduces bacteria in the follicle, improves the disordered growth of skin cells lining the follicle, and reduces inflammation. It also helps reduce pigmentation, which DermNet says makes it particularly useful for darker skin tones where acne leaves persistent brown marks.

DermNet lists its main uses as mild to moderate acne, papulopustular rosacea, the dark marks left after acne and melasma. Paula's Choice adds that azelaic acid isn't an AHA or BHA; it's a dicarboxylic acid with mild exfoliating effects that is not meant to replace your regular exfoliant. If you want the longer background on the ingredient itself, our guide to azelaic acid benefits covers it in more depth.

One honest caveat: most of the clinical data on azelaic acid comes from prescription products at 15% and 20%. DermNet describes 20% creams and lotions and a 15% gel, the gel being the one approved in the US for rosacea. A 10% cosmetic product uses the same molecule at a lower dose, so expect a gentler, slower effect than the studies on prescription strengths suggest.

Is it good for redness and rosacea?

It can help with general redness and the look of irritated skin, but rosacea itself is a medical condition that deserves a proper diagnosis. DermNet lists topical azelaic acid for mild to moderate inflammatory papules and pustules among rosacea treatments, and in the US the rosacea versions are prescription gels and foams. MedlinePlus describes those as used to "clear the bumps, lesions, and swelling caused by rosacea."

The booster is a cosmetic, not a rosacea drug, and it isn't tested or sold as one. It's a reasonable option for skin that looks blotchy or flushed after breakouts. If you have persistent central-face redness, visible blood vessels, burning, or bumps that come and go with triggers like heat, alcohol or spicy food, see a dermatologist. DermNet also notes that rosacea can affect the eyes, and that eye involvement can lead to long-term eyesight problems, so gritty or sore eyes alongside facial redness are a reason to book an appointment rather than buy another serum. Our explainer on rosacea vs acne walks through the differences.

There's a second reason to be careful: DermNet's rosacea advice includes "avoid exfoliants". This booster contains salicylic acid, so rosacea-prone skin may tolerate a plain azelaic acid product better.

Does it fade acne marks and dark spots?

Azelaic acid is a well-established option for brown marks, but it works slowly and only alongside daily sunscreen. DermNet includes azelaic acid among topical treatments for postinflammatory hyperpigmentation and stresses that daily broad-spectrum sunscreen is important to stop marks darkening further. For melasma, the AAD lists azelaic acid as a gentler medication a dermatologist may prescribe, again with daily broad-spectrum SPF 30 or higher.

Red or purple marks are a different problem. They come from inflamed blood vessels, not pigment, and don't respond to pigment-fading ingredients the same way. Our guide to red marks after acne explains what helps with those.

Give any mark-fading routine at least the 4 to 12 weeks Paula's Choice mentions. DermNet notes that acne usually improves after about four weeks of azelaic acid, with the best results after about six months of continuous use, and that rosacea may take up to 12 weeks.

What do the salicylic acid and licorice add?

The salicylic acid targets clogged pores and small bumps, which plain azelaic acid handles more gently. DermNet explains that salicylic acid is a keratolytic that slows the shedding of cells inside follicles, helping prevent clogged pores and break down blackheads and whiteheads. It also notes that mild stinging is common, especially at higher strengths or on broken skin.

The product page doesn't give the salicylic acid percentage, so treat it as a supporting ingredient. If you already use a BHA exfoliant such as Paula's Choice 2% BHA Liquid Exfoliant, the brand's own routine advice is to apply your exfoliant first and the azelaic acid after it. If that combination leaves your skin tight or stinging, use them on different days.

Licorice root extract is the other supporting ingredient worth knowing about. The formula's ingredient list includes Glycyrrhiza glabra (licorice) root extract, a plant extract usually added to soothe skin and even out tone. DermNet includes licorice extracts among the other topical options for postinflammatory hyperpigmentation. Its amount isn't disclosed either, so it backs up the azelaic acid rather than doing the main work; our guide to licorice root extract covers the evidence.

Paula's Choice vs The Ordinary azelaic acid: which should you buy?

Both contain 10% azelaic acid; the difference is texture, extra actives and price. The Ordinary's Azelaic Acid Suspension 10% is a "cream-like brightening formulation" at pH 4.00 to 5.00, listed at $12.20 as of October 2026. Its ingredient list puts isodecyl neopentanoate and dimethicone ahead of azelaic acid, so it leaves more of a silicone slip on the skin than a gel would.

Pick The Ordinary if price matters most and your skin isn't bothered by a heavier, siliconey layer. Pick Paula's Choice if you want something lighter under makeup, if you like the idea of mixing it into your moisturizer, or if you have small clogged bumps the salicylic acid may help with. If your skin is reactive or rosacea-prone, The Ordinary's version has no added BHA, which is a point in its favor despite the texture.

How do you use the azelaic acid booster?

Use it once a day to start, after cleansing and any exfoliant, then build to twice a day if your skin is comfortable. DermNet suggests once daily at first, increasing to twice daily if tolerated. Paula's Choice says it can be used morning and/or night, layered from thinnest to thickest texture, and finished with SPF 30 or higher during the day.

1. Patch test on a small area for a few days, as Paula's Choice recommends for sensitive skin.
2. Cleanse, then apply any toner or exfoliant you already use.
3. Apply a thin layer of the booster to dry skin, or mix a small amount into your moisturizer in your palm. The brand says to use a non-SPF moisturizer for mixing.
4. Follow with moisturizer if you didn't mix, and sunscreen in the morning.
5. Stay with it for at least 4 weeks before deciding whether it works.

Mixing it into moisturizer is a good way to soften the tingle for the first couple of weeks. It doesn't harm the azelaic acid, according to the brand, which says there's no concern of it overpowering or deactivating other actives. It can also sit alongside niacinamide; if you're considering both, start with the azelaic acid alone for a couple of weeks, then add the niacinamide so you can tell which one your skin reacts to if anything stings.

What are the side effects?

Mild tingling, itching or dryness in the first weeks are the usual complaints. MedlinePlus lists itching, burning, stinging, tingling, tenderness and dryness as common side effects of prescription azelaic acid, and DermNet notes that people with very sensitive skin or eczema can get mild irritant contact dermatitis. Stop and get medical advice if you develop severe redness, scaling, itching or burning.

Paula's Choice mentions that purging is rare and temporary. A few weeks of extra small breakouts in your usual spots can happen when cell turnover changes; new breakouts in new places, hives or swelling are a reaction, not purging.

Is azelaic acid safe in pregnancy?

Azelaic acid is one of the acne ingredients usually considered safe in pregnancy, but check with your doctor because this booster also contains salicylic acid. The AAD says azelaic acid "is thought to be safe to use during pregnancy", while salicylic acid is generally considered safe for a limited time and worth discussing with your obstetrician or dermatologist first. MedlinePlus advises telling your doctor if you're pregnant, planning a pregnancy or breastfeeding.

When should you consider prescription azelaic acid?

If a 10% cosmetic hasn't helped after about three months, or if you're dealing with diagnosed rosacea, moderate acne or melasma, a dermatologist can tell you whether a prescription option fits. MedlinePlus lists azelaic acid gel, foam and cream under brand names including Finacea and Azelex, with the gel and foam used for rosacea and the cream for acne. We won't give dosing here; your prescriber will set it.

A dermatologist visit also makes sense if your acne is leaving scars, if spots are deep and painful, or if pigment keeps coming back despite sunscreen. Those situations usually call for more than one product.

The verdict

Paula's Choice 10% Azelaic Acid Booster is a well-designed, easy-to-wear way to use azelaic acid, with sensible directions and a texture that layers well. Its weak point is value: the same azelaic acid percentage costs much less from The Ordinary, and the salicylic acid makes it a less obvious choice for very reactive or rosacea-prone skin. If redness, marks and clogged bumps are your main issues and the lighter texture means you'll actually use it every day, it's worth the price.