AHA acids for facial skin are one of the most popular ways to improve skin texture, reduce dullness and make the skin look visually smoother. They help remove dead skin cells from the skin’s surface, so the complexion can look fresher and skincare products may apply more pleasantly.
What are AHA acids?
AHA stands for alpha hydroxy acids. In everyday skincare language, they are often called fruit acids, although this name is not completely accurate: the AHA group includes not only fruit acids, but also lactic acid, glycolic acid, mandelic acid and other acids widely used in cosmetics.
AHA acids are water-soluble and mainly work on the surface of the skin. They help clear away the build-up of dead skin cells that can make the face look dull, rough and uneven. That is why AHA is often chosen for radiance, texture, dryness-related roughness and the visible reduction of pigmentation spots.
- Exfoliation AHA helps free the skin’s surface from dead cells and make the texture smoother.
- Glow When dead cells build up on the skin’s surface, the face can look greyish. AHA helps restore a fresher-looking appearance.
- Skin tone Regular, gentle use of AHA can help visually even out the skin tone and the look of post-blemish marks.
- Feeling of hydration Some AHAs, such as lactic acid and mandelic acid, are also often used in more moisturising formulas.
You do not need to be afraid of AHA, but you should use it wisely
AHA acids are not products that should be used with the idea that “more is better”. They are active ingredients, and the skin’s reaction depends on the type of acid, concentration, product pH level, frequency of use and the current condition of your skin barrier.
In the first weeks, 1–2 times per week is enough, especially if your skin is not used to acids.
Do not use several exfoliants, retinol and strong active products in the same evening routine.
AHA can increase skin sensitivity to the sun, so sun protection is needed during the day.
What types of AHA acids are common?
Different AHA acids can vary in intensity and skin tolerance. The formula as a whole also matters a lot — not just one active ingredient.
- Glycolic acid One of the most popular AHA acids. It is often used in skincare for texture, glow and unevenness. It can feel more intense, so sensitive skin should start carefully.
- Lactic acid A gentler AHA acid that is often liked by drier and dehydrated skin, as formulas with lactic acid can also provide a more moisturising feel.
- Mandelic acid Usually considered a gentler AHA option, because its molecule is larger and it works more gradually. Often suitable for more sensitive or blemish-prone skin.
- Malic acid and citric acid Often found in combinations with other acids. They complement the formula and help work with skin freshness and tone.
What are the benefits of AHA acids?
When chosen correctly and used gently, AHA acids can be very useful in a skincare routine. They fit especially well when the skin is dull, rough, uneven in texture or has marks left after blemishes.
- Smoother skin surface AHA helps reduce a rough feeling and makes the skin look visually more even.
- Fresher-looking complexion By removing the build-up of dead cells, the skin can look brighter and more lively.
- Better application of skincare products On smoother skin, serums, creams and makeup can apply more evenly.
- Visible reduction of pigmentation spots AHA can support the skin renewal process, so spots and post-blemish marks may look less noticeable.
- For the first signs of ageing AHA is often used in routines where the goal is skin texture, radiance and a visually smoother look of fine lines.
AHA, BHA and PHA — what is the difference?
AHA is not the only type of acid used in cosmetics. If the skin is oily, with clogged pores and blackheads, BHA may sometimes be a more suitable choice. If the skin is sensitive but you want very gentle exfoliation, PHA can also be considered.
Water-soluble acids that work more with the skin surface, glow, texture and dullness.
An oil-soluble acid category often chosen for pore, sebum and blackhead care.
A gentler exfoliation category often liked by more sensitive or dehydrated skin.
Who are AHA acids suitable for?
AHA acids most often fit well into the care of normal, dry, dull, more mature or uneven skin. They can also be useful for post-blemish marks and rough texture.
If the skin is very oily and the main concern is deeper pore congestion or blackheads, a BHA acid may also be needed in the routine. However, if the skin is very sensitive, AHA should be introduced very carefully or gentler alternatives should be chosen.
- For dry and dull skin AHA can help make the skin smoother and visually fresher, especially when dead cells build up on the surface.
- For more mature skin AHA is often used in routines where glow, smoothness and the visible softening of fine lines are important.
- For uneven tone Regular, gentle exfoliation can support the skin renewal process and improve the look of post-blemish marks.
- For sensitive skin Introduce carefully. Start with less frequent use, lower intensity and do not apply on a damaged skin barrier.
How to use AHA acids correctly?
AHA products can be toners, essences, serums, peels, masks or cleansers. The method of use depends on the product type, so always follow the instructions for the specific product.
For beginners, the safest way to introduce AHA products is in the evening, 1–2 times per week.
If the skin is sunburned, very dry, burning or damaged, restore the skin barrier first.
Do not combine AHA with strong peels, retinoids or scrubs in the same evening if your skin is not used to it.
After AHA, use a hydrating serum, cream or barrier-supporting care to reduce the risk of dryness.
Sun protection is essential, because AHA can increase skin sensitivity to UV radiation.
AHA acids are not suitable in every situation. Sometimes skincare first needs barrier repair and a simpler routine rather than exfoliation.
- If the skin is strongly irritated, burning or peeling after active ingredients.
- If there is fresh sunburn or a damaged skin surface.
- If you plan to use retinol, strong vitamin C or another exfoliant in the same evening.
- If the product causes strong burning, redness or discomfort that does not go away.
- If there are active skin conditions or severe acne — it is better to consult a dermatologist.
The best products with AHA acids in the YOKO range
Below are different AHA product formats: gentle toners, a targeted AHA essence and more intensive peeling serums. Choose according to your experience level and skin needs — beginners are better off starting with a gentler toner format, while intensive peels should be used less often.
COSRX AHA 7 Whitehead Power Liquid
An AHA essence with 7% glycolic acid and apple flower water. Suitable if the main goal is rough texture, dullness, uneven tone or surface-level care for the look of closed comedones.
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COSRX AHA/BHA Clarifying Treatment Toner
A spray toner with AHA and BHA direction. A good first step if you want to get to know acids in a gentler format and add a light exfoliation step to your routine.
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Elizavecca Hell-Pore Clean Up AHA Fruit Toner
An exfoliating toner with AHA and BHA acids, hyaluronic acid, niacinamide and caring oils. Suitable for those who want a versatile toner format for skin texture and a fresher-looking tone.
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Some By Mi AHA-BHA-PHA 30 Days Miracle Toner
An acid toner with a combination of AHA, BHA and PHA, tea tree, niacinamide, hyaluronate and plant extracts. Suitable for oily, combination and blemish-prone skin if you want to work not only with the surface, but also with pore care.
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Heimish RX AHA BHA Peeling Serum
An intensive rinse-off peeling serum with 30% AHA and 0.5% BHA. This product is better suited to experienced acid users, because it should be used for a short time, rinsed off and is not intended for daily use.
View productHow to choose an AHA product by experience level?
If your skin is not used to acids, do not start with the most intensive product. It is better to choose a gentler toner or essence format and use it less often. Intensive peels are more suitable when the skin already tolerates acids well.
- For beginners: a gentle AHA/BHA toner 1–2 times per week in the evening.
- Intermediate level: an AHA essence or toner with an acid combination, gradually increasing frequency.
- For experienced users: a rinse-off peel with a higher acid concentration, following the instructions strictly.
- For sensitive skin: choose less frequent use, gentler formulas and a simple moisturising routine alongside it.
Frequently asked questions about AHA acids
Can AHA acids be used every day?
Some gentle products may be suitable for more frequent use, but beginners are better off starting with 1–2 times per week. If dryness, burning or peeling appears, the frequency of use should be reduced.
Can AHA acids be used in summer?
Yes, but only with very careful SPF use and a reasonable frequency. If you spend a lot of time in the sun, it is better to reduce the intensity of acids and focus more on hydration and protection.
Does AHA help with acne?
AHA can help with skin texture, post-blemish marks and superficial unevenness. If the main concern is oily pores, blackheads and comedones, BHA is often more suitable. In the case of noticeable acne, it is better to consult a dermatologist.
What should AHA not be combined with?
Beginners should not combine AHA with retinol, strong vitamin C, other peels or scrubs in the same evening. Once the skin is used to acids, combinations can be adjusted more carefully, but the skin’s reaction should always be monitored.
Why does the skin sting or become red after AHA?
A slight tingling can be normal with some products, but strong burning, pain or long-lasting redness should not be tolerated. It may mean that the product is too intensive, used too often or that the skin barrier is weakened.
AHA acids can give a beautiful result when used gently
AHA acids help make the skin smoother, fresher and visibly more radiant, but they are not a product for rushed overuse. Start slowly, choose a formula suitable for your skin type, always finish the routine with moisturising care and use SPF during the day.
View AHA, BHA and PHA products at YOKO