21 CFR 358.110 - Wart remover active ingredients.
The product consists of any of the following active ingredients within the specified concentration and in the dosage form established for each ingredient.
(a) Salicylic acid 12 to 40 percent in a plaster vehicle.
(b) Salicylic acid 5 to 17 percent in a collodion-like vehicle.
(c) Salicylic acid 15 percent in a karaya gum, glycol plaster vehicle.