BHA (Beta Hydroxy Acid)
Published on: 30/03/2025
Summary: Oil-soluble acid used for exfoliation, particularly within the pores.
Beta hydroxy acids are a class of organic acids with a hydroxyl group (-OH) attached to the second carbon atom (β position) in the molecule. The most widely used BHA in skincare is salicylic acid. Unlike alpha hydroxy acids, BHAs are oil-soluble, which allows them to penetrate into pores where oil and debris accumulate. This enables them to break down dead skin cells and sebum inside the pores. BHAs also have anti-inflammatory and antimicrobial properties, which support their use in products designed for skin prone to clogged pores or excess oil.