Scholl Party Feet Blister Plasters Scholl Party Feet Blister Plasters provide immediate pain & pressure relief, cushioning protection & help to create the ideal healing conditions for blisters. Can be used on areas which rub to prevent blisters from forming. Directions Ensure feet are clean & dry. Peel plaster from protective film using blue tab. Apply sticky side down, centrally over blister & remove Scholl backing paper. Repeat until blister has healed.