Magnesium crystals exfoliate dead skin cells to create a clear, smooth and even toned complexion. Named one of Good Houskeeping's 6 Best Face Scrubs to Exfoliate Your Way to Smooth Skin. Magnesium crystals provide exfoliation benefits while instantly polishing skin to restore smoother texture and a healthy glow. Removes dead skin cells to prevent clogged pores Gently massage a small amount on damp face and neck. Rinse thoroughly.