Salicylic acid is used for a number of different skin conditions caused by thickened, hard skin, such as warts, psoriasis, scaly skin conditions and some nail infections. It is a keratolytic, which means that it works by softening the outer layer of your skin allowing it to loosen and shed.
This is a companion discussion topic for the original article at https://patient.info/medicine/salicylic-acid-occlusal-pickles-verrugon-wartex