Beta Hydroxy Acid (BHA)
Also known as: Salicylic Acid, 2-hydroxybenzoic acid
Oil-soluble exfoliant that penetrates pores to dissolve dead skin and reduce congestion.
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Get the appWhat it does
BHA is a lipophilic chemical exfoliant that dissolves sebum and keratin buildup inside pores, making it especially effective for oily and acne-prone skin. It reduces inflammation and helps normalize skin cell turnover. Unlike AHAs, BHA works within the pore rather than just the surface.
Benefits
- Unclogs pores and reduces blackheads/whiteheads
- Decreases breakouts and acne lesions
- Improves skin texture and smoothness
- Anti-inflammatory and antimicrobial
- Suitable for oily and combination skin types
Who it suits
- Oily skin
- Acne-prone skin
- Congested skin
- Combination skin
How to use
Apply to clean, dry skin 2–3 times weekly, gradually increasing frequency as tolerated. Wait a few minutes before layering other products. Always follow with moisturizer and broad-spectrum SPF 30+.
Pairs well with
Niacinamide, Azelaic acid, Moisturizers with ceramides, Sunscreen
Be careful pairing with
Vitamin C (can reduce efficacy), Retinoids (risk of over-exfoliation)
Safety & cautions
BHA can cause irritation, dryness, and sun sensitivity; start low (0.5–2% salicylic acid) and use 2–3× weekly before increasing frequency. Always use SPF during the day. Avoid if allergic to salicylates or aspirin. Not recommended during pregnancy without dermatologist approval.
Educational information, not medical advice. Concentration and formulation change how an ingredient behaves.