COSRX Advanced Snail 96 Mucin Power Essence is a 100ml, 96% snail secretion filtrate-powered, lightweight essence designed to hydrate, repair, and soothe skin. It boosts moisture, fades dark spots, improves texture, and helps reduce red skin. It is popular for achieving a "glass skin" effect and is suitable for all skin types, especially damaged, dehydrated, and sensitive skin.