Rejuvenating fabric masks Plump Collagen Boost 3pcs. Contains plant collagen and peptides that restore skin elasticity and have a firming effect. Hyaluronic acid and omega fatty acids keep skin hydrated and protected. Directions for use: apply to clean skin, leave on for 10-15 mins, massage excess serum into skin. For a cooling effect, keep the mask in the refrigerator beforehand.