(HealthDay News) -- Blisters, corns and calluses have at least one thing in common: they're triggered by the friction of two surfaces rubbing against each other. The Nemours Foundation suggests how to care for these skin issues:- Keep a blister clean, dry and bandaged until it heals. Avoid putting pressure on the area.- Soak a callus in warm, soapy water for ten minutes, then rub gently with a pumice stone.- Consider a shoe pad to relieve pressure and allow a callus to heal. - Use a donut-shaped pad in your shoe to help reduce pressure on a corn. - Use a pad with salicylic acid, which helps remove a corn's dead skin. - If a corn continues to hurt and does not heal on its own, see a podiatrist.