Exfoliation and blackheads: which chemical scrub to choose ?
Blackheads are among the most stubborn imperfections, especially on the T-zone (forehead, nose, chin). They are the result of clogged pores caused by excess sebum and dead skin cells. Among anti-blackhead care, Chemical exfoliation is one of the most effective approaches. Here's how it works and a selection of exfoliants deciphered with BeautyDecoded scores.
Chemical exfoliants anti-blackheads.
A selection of chemical exfoliants (AHA and BHA) suitable for blackheads and clogged pores, deciphered with BeautyDecoded algorithmic scores and user feedback.
Paula's Choice 2% BHA Liquid Exfoliant - the anti-blackhead reference
The benchmark BHA exfoliant: fat-soluble 2 % salicylic acid penetrates sebum-laden pores to unclog them, while green tea extract soothes. A no-rinse lotion, ideal for combination to oily skin prone to blackheads. Blemish score of 85 and oily skin score of 84 Optimum profile against clogged pores. Sensitive skin score of -1, slight caution: gradual introduction recommended.
Salicylic acid 2 % penetrates pores without rinsing, smoothes skin texture, well tolerated by most.
Slight caution on sensitive skin; gradual introduction; SPF recommended.
A relevant option as a basic BHA exfoliant for oily skin with blackheads: salicylic acid unclogs pores deep down, and the leave-on formula integrates easily. Users report smoother skin texture within the first few weeks. Introduce gradually and combine with sun protection.
«BHA is my favorite ingredient for my oily skin, I use it after double cleansing.»
«Great on my teenager's grainy skin, smoothed skin texture.»
«Really effective product, I validate.»
SVR Ampoule Flash Sebiaclear - azelaic acid concentrate
A dermatological concentrate centered on azelaic acid (15 %), with keratolytic, anti-bacterial and anti-inflammatory properties, complemented by salicylic acid and niacinamide. Designed for oily skin with imperfections and blackheads. Imperfections score of 95.2, the highest in this selection. Sensitive skin score of -3: the presence of alcohol makes it unsuitable for sensitive skin, so use with caution.
Azelaic acid 15 %, best imperfections score of the selection, action on blackheads, pimples and spots.
Alcohol: may sting, not suitable for sensitive skin; not suitable for dry skin.
A relevant option as a targeted anti-imperfection treatment for tolerant oily skin: azelaic acid acts on blackheads, pimples and spots. Feedback indicates alcohol-related tingling on application, consistent with the sensitive score of -3. To be reserved for non-sensitive skin and introduced gradually.
«I use it as an anti-redness and to smooth the skin, excellent product.»
«It tingles on application and even the next day; the salicylic and alcohol combo is not suitable for all skin types.»
«For 15 % of azelaic acid, I find it a little less effective than others on settled spots.»
The Ordinary Glycolic Acid 7% Exfoliating Toner - AHA at your fingertips
A toning solution with water-soluble glycolic acid (AHA) that exfoliates the surface of the epidermis to refine skin texture, revive radiance and limit pore clogging. Use once a day in the evening, after cleansing. Anti-ageing score of 85 and spots of 76.5 An excellent radiance exfoliant. Sensitive skin score of -5.5: this is a powerful acid, to be avoided on sensitive skin and introduced very gradually.
Glycolic acid effective on grain and radiance, very good value for money.
Not suitable for sensitive skin; use in the evening, never with a retinoid on the same night; SPF mandatory.
Glycolic acid refines skin texture and revives the complexion. Users use it alternately with retinol, never on the same evening. Its sensitive score of -5.5 reserves it for non-sensitive skin, under sun protection.
«I use it in the evening alternating with my retinol, perfect for my combination to oily skin.»
«Once a week, the skin texture is much finer, I repurchase.»
«Effective on clogged pores at a low price, simple formula.»
Paula's Choice 8% AHA Exfoliating Gel - Glycolic Radiance Gel
A no-rinse glycolic acid 8 % exfoliating gel that removes dead cells to smooth skin and revive radiance, supported by panthenol (moisturizer) and sodium PCA (barrier). Use after cleansing, avoiding the eye contour area. Anti-ageing score of 79.9 and imperfections of 76.5. Sensitive skin score of -4.5: powerful exfoliant, not suitable for sensitive skin and should be introduced gradually.
Glycolic acid 8 % effective on grain and radiance, moisturizing panthenol, complemented by BHA.
Not suitable for sensitive skin; photosensitizing, SPF mandatory; alternate with BHA.
A relevant option as an AHA exfoliant to improve skin texture and radiance, alternating with a BHA to combine surface and pore action. Its sensitive score of -4.5 makes it ideal for tolerant skin. Introduce gradually and always under sun protection, as glycolic acid is photosensitizing.
«My skin is more and more illuminated, the grain is refined, I use a moisturizer on top.»
Blackheads: where do they come from ?
Blackheads are simple micro-cysts that are benign, but often invasive. They occur mainly on the T-zone (forehead, nose, chin), sometimes on the back or shoulders. They result from excess sebum and dead cells clogging the pores: on contact with air, the blackhead oxidizes and takes on its characteristic black color.
Several factors contribute to their appearance: hormonal variations, stress, processed foods, alcohol and tobacco. Oily skin is the most prone to blackheads. In some cases, blackheads can develop into more painful inflammatory pimples, which generally disappear on their own.
Chemical exfoliation: how it works
Unlike mechanical exfoliation (grains), chemical exfoliation uses exfoliating acids to dissolve the bonds between dead cells and unclog pores gently, without friction. Two main families exist:
For blackheads, BHA (salicylic acid) is generally the most effective, as it penetrates the sebum in the pores. AHAs (glycolic, lactic) complete the action by smoothing the surface and reviving radiance.
Cosmetic exfoliation is not a peel. Performed by a dermatologist at higher concentrations, the medical peeling treats deeper problems (fine lines, brown spots, acne scars). Cosmetic exfoliation remains a gentle maintenance treatment.
Exfoliate without damaging the skin.
Start slowly: once or twice a week maximum. Beyond that, the skin risks being weakened and producing more imperfections.
Apply to clean, dry skin, after cleansing, avoiding the eye contour area.
Never combine several strong acids (or an acid and a retinoid) on the same evening, to limit irritation.
Apply sun protection SPF 50+ in the morning: exfoliating acids, especially AHAs, are photosensitizing.
Sensitive skins should avoid high concentrations: a BHA at 1 % or reduced frequency will be preferable to a strong glycolic.
Which exfoliator to choose according to skin type ?
Oily skin with blackheads : a BHA with salicylic acid as a priority (Paula's Choice 2% BHA), possibly an azelaic concentrate targeted at imperfections (SVR).
Dull complexion, uneven grain: an AHA with glycolic acid (The Ordinary 7%, Paula's Choice 8%), alternating with BHA.
Sensitive skin : prefer low concentrations, space out applications, and avoid strong acids such as glycolic 7-8 % or alcohol concentrates.
Choose your scrub with BeautyDecoded application.
BeautyDecoded is a mobile application for cosmetic analysis using artificial intelligence. It deciphers INCI formulations and generates compatibility scores for 80 skin types and profiles. It is not a medical consultation, but helps to objectify the choice of an exfoliant according to a precise skin profile - useful for avoiding aggression on already fragile skin.
Discover the applicationYour questions about exfoliation.
AHA or BHA for blackheads?
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Do I need sun protection with an exfoliant?
Can sensitive skin be exfoliated?
What is the BeautyDecoded application?
Information for educational purposes only. It does not replace a medical consultation. Exfoliating acids (AHA, BHA) are photosensitizing and require daily sun protection; they should be introduced gradually, once or twice a week, never in combination with a retinoid on the same evening. BeautyDecoded algorithmic scores do not prejudge individual tolerance: a test on a small area is still recommended, and sensitive or reactive skins will prefer lower concentrations. In case of doubt or inflammatory lesions, seek the advice of a dermatologist. A product on this page has only one review: this feedback is indicative and does not constitute a reliable synthesis. The reviews displayed come from BeautyDecoders and have not been verified. No commercial partnership links this page to the marquess mentioned. © BeautyDecoded - Independent information. Dr Sylvain David, Plastic and aesthetic surgeon - Founder of BeautyDecoded.