Adopt the “glass skin” trend Seoul-style with this collagen gel mask. On clean, dry skin, apply a generous layer of the Collagen Gel Mask, avoiding the eye area. Leave on for 10 to 20 minutes to let the jelly infuse your skin with hydration, then rinse with lukewarm water or remove the excess with a cotton pad. Use 2 to 3 times a week, preferably in the evening, for plumper, more radiant skin, just like after a treatment at a Korean beauty salon.