"Like most other skincare products, it's believed that the more expensive a mask is, the better. But that isn't always the case, especially when it comes to sheet masks. Mediheal is the number one sheet mask brand in Korea, and it won't cost you more than $2 to try one of its nourishing treatments. The masks are also endorsed by celebrity MUA Daniel Martin, who uses them to prep his clients' skin before applying makeup. I love throwing on the Intensive Hydrating Mask at the end of a long week—my skin soaks up all of its moisturizing goodness and feels soft and smooth just 15 minutes later."