Brand from South Korea: IOPE. Benefits:This mask is soaked in essence with 1% Retinol RX™ to help improve skin resilience, wrinkles and skin texture.Retinol RX™, solely developed by IOPE, is in nano size for better absorption.The double-layered mask sheet features a banding gauze layer to help effectively deliver Retinol to the skin, and a collagen hydrogel layer that perfectly stays on the skin for better absorption.How to use:1. After cleansing, prep the skin with toner and take out the mask from the package.2. Remove the mask from the paper film and place it on the face with the banding gauze layer sticking to the skin.3. Leave it for 20-40 minutes, remove it and gently pat the skin for absorption.