Brand from South Korea: Isntree. isntree Hyaluronic Acid Water Sleeping Mask Infused with 5 kinds of concentrated hyaluronic acids to provide intense hydration to your skin overnight. With a gel texture that adheres well to skin without stickiness. Suitable for all skin types. Dermatologically tested. How to use: 1. At the last step of night skincare routine, take a moderate amount and apply an even layer to the entire face. 2. Leave it overnight. 3. Wash face in the next morning.