The calluses eliminate - This transparent dressing helps to remove calluses, is ideal as a first aid solution and offers immediate pressure relief. Easy pain relief - thanks to its central foam ring, this dressing removes calluses protects from the pressure and the rubbing, and relieves the pain. salicylic acid - having 40% salicylic acid, the adhesive dressing softens the outer layers of the skin and allows the callus to be removed in 4 days.