Never look tired again. Get that plump skin, full of nourishment, in 4 steps! Hyper-concentrated, snail mucin enriched for dry skin and dark spots to make it more youthful and radiant. What it is: The solution to all of your skincare problems in one kit! COSRX best-selling Snail Secretion Filtrate line prevents your skin from moisture loss while improving your skin's elasticity.