Salicylic Acid
水杨酸
Also known as: BHA, Beta Hydroxy Acid
What it does
- Chemical exfoliation
- Unclogs pores (oil-soluble)
- Anti-inflammatory
- Controls oil
Effective concentration
Otc Max 2% Typical 0.5-2%
Evidence
Strong evidenceSkin types
Well suited for: Oily Combination Acne Prone
Use with caution: Dry Sensitive
Helps with
Acne & Breakouts Blackheads Oily Skin Clogged Pores
Interactions
Use with care Retinoids
Can increase irritation. Alternate use recommended.
Irritation potential
Medium
Comedogenic rating
0 / 5
Pregnancy
Avoid during pregnancy
Avoid leave-on products. Wash-off cleansers are lower risk.
Good to know
Oil-soluble BHA penetrates pores unlike water-soluble AHAs.
References
Compound data from PubChem (U.S. National Library of Medicine).
Further reading
- [Application of salicylic acid in inflammatory skin diseases and the effect on skin microbiome] — Zhonghua Yu Fang Yi Xue Za Zhi (2026)
- The Effectiveness of Topical Keratolytics (Alpha Hydroxy Acids/Beta Hydroxy Acids/Urea) in Treating Keratosis Pilaris: A Review of the Literature — Cureus (2025)
Selected peer-reviewed reviews on this ingredient, indexed by Europe PMC. Provided as background, not proof of any specific claim.
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Analyze a productEducational information only — not medical advice. Always patch test and consult a dermatologist for skin concerns.