A clinically proven, all-in-one way to remove painful callouses Combine a large, soft felt ring to relieve the pressure on the callous, together with a measured dose of Salicylic Acid to loosen the thick layers of dead skin Note: If you are under 16 years old, pregnant or have a circulatory disorder you should seek medical advice before use. Do not use if you suffer from diabetes. Always read the pack label. Carnation Callous Caps contain Salicylic Acid. Always read the label.