Benzoic acid + salicylic acid is a combination medicine that is applied to the skin for certain skin problems. This product contains benzoic acid, a medicine that can control infections and salicylic acid, a keratolytic agent that can soften and loosen thick and scaly skin. This product is used for fungal infections and can lead to shedding off of the skin layer for better skin treatment. This medicine is available as an ointment.