Microdermabrasion Peel 4 oz. Our exclusive product includes Microdermabrasion Crystals and 10% Glycolic Acid in one single product. This 2-in-1 Peel is truly unique. Skin Rx Clinics Microdermabrasion Peel employs the same Corundum Crystals used in machines at Doctor's offices and Salons. Both Glycolic Acid and Corundum Crystals gentle exf