PURIFYING STRIPS normal-mixed skin by Diadermine. Purifying strips to eliminate impurities and black spots on the forehead, nose and chin, for normal and combination skin. It reduces and purifies the pores, it cleanses the skin in depth and leaves it soft and smooth. Apply the strip to the skin, press for 4 seconds to fix it correctly, leave it to act for 10 to 15 minutes and remove it. Use it 2 to 3 times a week leaving 48 hours minimum between each application.