Cucumber Heel Therapy™ Restorative spa treatments relieve dryness with naturally-refreshig cucumber. Alpha Hydroxy Acids smooth rough edges while the intensive moisturizing complex hydrates heels. The perfect finish to a pampering spa pedicure. Callus Smoother is a professional-strength serum with concentrated Alpha Hydroxy Acids softens tough skin in minutes to reduce calluses. Callus Smoother is a professional-strength serum with concentrated Alpha Hydroxy Acids softens tough skin in minutes to reduce calluses.