The COSRX Snail Mucin Hydrogel Masks Duo delivers two sets of three targeted treatments designed to hydrate, smooth and refresh the look of skin. Each mask is infused with a high concentration of snail secretion filtrate, working alongside potent actives to leave the complexion feeling dewy and supple. Set Contents: COSRX Advanced Snail Mucin Glass Glow Hydrogel Mask (3 sheets) x 2 A radiance-boosting mask that blends snail secretion filtrate with collagen, niacinamide and hyaluronic acid to hydrate and refine the look of skin and promote a glass-like complexion.