COSRX’s Advanced Snail Radiance Dual Essence contains a 74.3% concentration of Triple Snail Complex—three kinds of snail secretion—which works synergistically with niacinamide to hydrate, brighten, promote regeneration, and improve skin texture. Skin Solutions: 74.3% Triple Snail Complex consists of black mucin, golden shell mucin, and land snail mucin and helps to make skin more elastic, clear, and radiant. Niacinamide helps brighten skin tone and even out your complexion. Glutathione improves skin tone.