BHA

Mechanism of Action

Unlike water-soluble AHAs that work on the skin’s surface, BHA (salicylic acid) is oil-soluble, allowing it to penetrate into the lipid-rich interior of pores. This ability to clean pores from within makes BHA uniquely effective for managing blackheads, whiteheads, and acne breakouts.

Therapeutic Properties

Beyond exfoliation, salicylic acid offers anti-inflammatory properties that reduce redness and swelling associated with acne. Its keratolytic action helps normalize the shedding of pore-lining cells that become sticky in acne-prone skin, addressing a root cause of breakouts rather than just symptoms.

Usage Guidelines

BHA products typically range from 0.5-2% concentration for daily use. Because salicylic acid is gentler than many AHAs, it’s well-tolerated by most skin types. The FDA classifies salicylic acid as an over-the-counter acne treatment drug, giving it a different regulatory status than cosmetic exfoliants.

OSF Perspective

OSF views BHA as an essential tool in acne management, offering a more elegant and effective approach to pore health than traditional harsh treatments.

Related Terms

AHA  |  Active Ingredient  |  Comedogenic Rating  |  Skin Barrier  |  pH Balance in Skincare

Notable Brands

Paula's Choice (BHA Liquid Exfoliant), The Ordinary, CeraVe (SA), COSRX, Neutrogena