The Kiehl's Ultra Facial Overnight Hydrating Face Mask is designed to deliver intensive, overnight hydration for visibly replenished and refreshed skin upon waking. Formulated with 10.5% Squalane, this rich treatment works while you sleep to support the skin's natural moisture barrier. This mask is an excellent addition to your nightly routine, especially for those with dry or dehydrated skin, providing deep nourishment that lasts through the night. Wake up to comfortable, softer, and supple skin without the need for rinsing immediately upon waking.