Azelaic acid: effects against pimples, redness and pigment spots
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Azelaic acid is a real insider tip among active ingredients: it fights blemishes, calms the typical redness of rosacea and fades pigment spots without strongly irritating the skin. That means a single ingredient covers several of the most common skin concerns at once. In this guide you will learn what makes azelaic acid effective, who it suits, at which concentration you can get it and how to build it into your routine step by step.
What is azelaic acid?
Azelaic acid is what is known as a dicarboxylic acid that occurs naturally in grains such as wheat, rye and barley. On the skin it is also produced by certain yeasts that belong to the normal skin flora. In skincare it is applied topically, usually in creams, gels or serums. On the ingredient list (INCI) you will find it as Azelaic Acid.
Despite the word “acid,” azelaic acid does not exfoliate strongly like a classic peel. It counts among the rather gentle ingredients and irritates the skin less often than many other treatments for blemishes. It is exactly this combination of broad effect and good tolerability that makes it so interesting.
How azelaic acid works
Azelaic acid acts in several places at once. That explains why it is used for such different skin concerns.
Against pimples and blemishes
Azelaic acid is antibacterial and can keep in check the bacteria that play a role in the formation of pimples. At the same time it helps to normalize the way the pores shed cells, so that sebum and skin flakes are less likely to build up into blockages. This counteracts blackheads and inflammation. If you want to tackle the issue from the nutritional side as well, it is worth looking at zinc for pimples and blemishes.
Calming rosacea redness
For rosacea, which often shows up as persistent redness and small pustules on the face, azelaic acid is a popular choice. It has anti-inflammatory properties and can soften visible redness and swelling. For more background on caring for red, sensitive skin, see our guide on red patches and rosacea care.
Fading pigment spots and acne marks
Azelaic acid can dampen the formation of excess pigment and so help dark spots fade over time. This is especially helpful with post-inflammatory hyperpigmentation (PIH), the brownish or reddish marks that remain after pimples have healed. To learn how to target these marks specifically, read our post on removing acne marks. Dark discoloration around the sensitive eye area is a topic of its own, which our guide to eye care for dark circles and puffiness covers.
Who is azelaic acid for?
The short answer: for many skin types, especially when several concerns come together. Typical situations where azelaic acid pays off:
- Blemished skin and mild to moderate acne: thanks to its antibacterial and pore-clearing effect.
- Rosacea and a tendency to redness: as a calming, anti-inflammatory building block.
- Pigment spots and acne marks: to gently fade uneven areas.
- Sensitive skin: because azelaic acid is milder than some stronger ingredients for blemishes.
If your skin tends toward sensitivity anyway, the good tolerability is a big plus. Still, every skin reacts differently, so a cautious start always makes sense.
How to use azelaic acid correctly
When starting out, patience is half the battle. Here is how to build the ingredient in sensibly:
- Ease in slowly: Start by applying it every second or third evening and watch how your skin reacts.
- Cleanse: Wash your face with a mild cleanser and gently pat it dry.
- Apply: Spread a pea-sized amount thinly over the affected areas or the whole face.
- Moisturize: Follow with a moisturizer to soothe the skin.
- Protect: In the morning always use sunscreen, especially if you are working against pigment spots.
If your skin tolerates the application well, you can slowly increase to once or twice daily. A light tingling at the start is possible, but if it persists or stings strongly, reduce the frequency.
Concentration: over the counter or by prescription
When it comes to concentration there are two worlds:
- 10 percent (over the counter): Cosmetic serums and creams with around 10 percent azelaic acid are available without a prescription. They suit lighter blemishes, an uneven complexion and work well as a gentle starting point.
- 15 to 20 percent (prescription only): More highly concentrated preparations against acne or rosacea are medicines and only available with a doctor’s prescription. They work more strongly but belong under professional supervision.
So more is not automatically better: for many concerns the over-the-counter version is enough, and with pronounced acne or rosacea a visit to the dermatologist is the better route anyway.
Combining azelaic acid with other ingredients
Azelaic acid is pleasantly uncomplicated and pairs with many ingredients:
- Niacinamide: A harmonious duo against blemishes and redness. More on this in our guide to niacinamide for the skin.
- Hyaluronic acid: Provides moisture and cushions a possible feeling of tightness.
- Retinol and acids (AHA/BHA): Combinable in principle, but watch the overall load on your skin. With sensitive skin it is better to apply them at different times or alternate them.
Which ingredients generally go together and what to look out for is explained in detail in our guide to combining skincare ingredients.
Tolerability and patience
Azelaic acid is considered comparatively safe even during pregnancy and breastfeeding and is often mentioned as an alternative to ingredients that are avoided during this time. Even so, you should discuss using it during this phase with your doctor first.
As with most ingredients, you need a little stamina: first improvements in how the skin feels often show after a few weeks, while clearly visible results on pigment spots or blemishes usually take several weeks to months of consistent use. If the skin stays persistently irritated or symptoms worsen, have it checked by a doctor.
Frequently asked questions (FAQ)
How quickly does azelaic acid work? Many people notice first effects on how the skin feels after one to two weeks. Visible changes to pimples, redness or pigment spots usually take several weeks to months of consistent use. Patience pays off here.
Which concentration should I choose? For lighter concerns and for starting out, an over-the-counter product with around 10 percent is enough. Higher concentrations of 15 to 20 percent require a prescription and are the medically supervised route for pronounced acne or rosacea.
Is azelaic acid allowed during pregnancy? It is considered comparatively safe and is often mentioned as an alternative. Still, the rule applies: always discuss using it during pregnancy or breastfeeding with your doctor beforehand.
Can I use azelaic acid morning and evening? Yes, once your skin tolerates the ingredient well. But start slowly, for example every second evening, and only increase the frequency if no strong irritation occurs. In the morning sunscreen is a must.
Does azelaic acid burn on the skin? A light tingling or warm feeling at the start is possible and usually harmless. If a strong burning persists or the skin reddens noticeably, reduce the frequency or concentration and give your skin a break.
