1 Face Mask – 28 ml / 0.95 fl. oz. Hyperpigmented Skin, Not Suitable for Sensitive Skin. Even out skin tone and the appearance of age spots with Brightening Face Mask. Indulge in the illuminating essence of grapefruit seed extract, rare Asian plant extracts and salicylic acid. Karuna sheet masks help restore skin’s vitality by pushing serum deeper onto the skin surface where ingredients are needed the most. The mask + serum duo offers so much more than serum, clay or gel does on its own.