Professional-C Microdermabrasion Polish + Mask, a dual-action Vitamin C face mask that uses ultra-fine crystals to gently buff away the dull, outer layers of skin and infuses the freshly revealed skin with potent 30% L-Ascorbic Acid. For a brighter, smoother, and more youthful-looking appearance. 88% of participants experienced a more luminous glow after the 1st use* Formulated with L-Ascorbic Acid to brighten skin *3-week study with 3 uses per week. Data on file at Obagi Cosmeceuticals LLC.