A good mask can do wonders for the skin, and like most beauty treatments, the benefits have been known for thousands of years. Mask ingredients include herbs, vitamins, and oils which can be combined in clay, seaweed, or hydrating bases.
Masks that harden often include setting ingredients, which dry and provide a complete barrier on top of the skin. Nonsetting masks, such as cucumber or aloe, stay moist and are more hydrating. Depending on their ingredients, they can tighten and tone the skin, draw impurities out of the pores, clear up blemishes, hydrate, nourish, calm and soothe, and rejuvenate the skin.