2. Acne

Acne is caused by sebum and debris that clog pores. It is often accompanied by oily skin with large pores. To keep pores as clean as possible, use salicylic and/or mandelic acid. Salicylic acid is a type of beta-hydroxy acid (BHA) that penetrates deep into the pores and helps with white and blackheads, but not cystic acne. Mandelic acid is an alpha-hydroxy acid (AHA), with antimicrobial effects to combat cystic acne, and is suitable for sensitive skin.

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