The mask comes in a pair of socks infused with the moisturizing serum. The typical application process is as follows: Wash and dry your feet thoroughly. Tear the foot masks apart along the perforated line and place your feet inside. Secure the masks around your ankles with the attached sticker tabs. Leave the masks on for about 20 minutes. For better absorption, you can wear a pair of socks over the masks. Remove the masks and gently massage any remaining essence into your skin. There is no need to rinse.