SKINFOOD - Sous Vide Mask Sheet Eggplant. It is a hydrating and smoothing sheet mask that contains eggplant extract. It is made with biodegradable Lyocell fabric that is vegan-friendly. It helps to nourish and soothe dry skin. How to Use: Remove mask and tightly apply on skin, following the contours of vour face. After about 10-20 minutes, remove the sheet and pat face to absorb the remaining essence. Apply any remaining essence in the pouch to your neck and body.