99% NATURAL Size: 2.5 oz Burt's Bees Hydrating Overnight Mask replenishes moisture while you sleep so that you can wake up to intensely hydrated skin. This 99% natural formula includes some of nature's best ingredients, including avocado, a superfruit rich in fatty acids, and prebiotics, which help support a healthy microbiome. The Hydrating Overnight Mask provides up to 24 hours of hydration, leaving skin looking refreshed and healthy. It is dermatologist-tested which means it is gentler on your skin and you can feel good about adding this to your nightly rotation. Say good night to dry skin and wake up to naturally refreshed and healthy-looking skin.