From visibly smaller and softer heels for 4 weeks thanks to the feet of Scholl. Una AHA formula with fruit extracts that eliminates calluses on heels. Clinically proven formula. The exfoliating heel mask includes two easy-to-use heel pads; simply slip them on and secure them with the adhesive strip. Depending on the severity of the calluses, leave the mask on for 60 to 90 minutes to leave your heels feeling soft and smooth.