1 stick of each of our best selling ointment sticks. Corn & Callus treatment with Salicylic Acid is a fast, easy, and effective way to help remove stubborn corns and calluses from feet and hands. And One Hydrocortisone topical is used to treat redness, swelling, itching, and discomfort of various skin conditions. Hydrocortisone is in a class of medications called corticosteroids. It works by activating natural substances in the skin to reduce swelling, redness, and itching.