Described are methods for treating a keratinized tissue condition in a subject in need thereof. The method may include providing the subject including the keratinized tissue condition. The method may include conducting one or more treatment cycles on the keratinized tissue. Each treatment cycle may include contacting the keratinized tissue with an acid-activated gas-generating composition. Each treatment cycle may include contacting the keratinized tissue with an acid composition. Each treatment cycle may include allowing the acid composition and the acid-activated gas-generating composition to react effective to generate a gas at the keratinized tissue. The one or more treatment cycles may be effective to at least partly ameliorate the keratinized tissue condition in the subject.