COSRX PHA/BHA Clarifying Toner 150mlCOSRX PHA BHA Clarifying Toner 150ml Dual Acid Exfoliation for Clearer, Smoother Skin COSRX PHA BHA Clarifying Toner is a gentle exfoliating toner that combines two complementary chemical exfoliants PHA (polyhydroxy acid) and BHA (beta hydroxy acid salicylic acid) to address multiple skin concerns simultaneously without the harshness of traditional AHAs. At 150ml, it's a practical sized daily exfoliant for those seeking clearer pores, smoother