Salicylic acid treats acne by reducing swelling and redness and unplugging blocked skin pores to allow pimples to shrink It treats other skin conditions by softening and loosening dry scaly or thickened skin so that it falls off or can be removed easily Salicylic acid helps to slough away the dead skin cells that may be clogging your pores This product is fragrance free sulphate free dye free essential oil free paraben free and silicone free