Whitening Source Derm-Revival Mask contains DMT Blocker, an advanced complex containing Pitera®, Vitamin C derivative and Niacinamide; Inositol, a skin conditioning agent; and yeast amino peptides key to encouraging release of excess pigmentation from the skin to restore the skin's crystal clarity. SK-II's unique stretchable mask is designed to hold the maximum amount of juice and deliver it effectively to the skin. The action of stretching the mask activates its multiple layers, creating a delivery system that continuously drives the juice deep into the epidermis. The pressure of the mask against the skin also helps to enhance delivery of the whitening actives.