Read a few good reviews of this product so decided to ask for a sample. The Clarins RE- CHARGE night sleep mask is a cream you leave on while asleep, used 1-3 times a week to hydrate and detoxify the skin. Smells good as most Clarins products do and while I don't know about its detoxifying effect, it certainly made my skin look healthier the morning after (I don't sleep much). Will definitely purchase the product!!