Transform your hair whilst you sleep with the Moroccanoil Overnight Leave-In Mask, a nourishing nighttime solution for dry, dehydrated strands. Powered by argan oil, hyaluronic acid and vegan snail mucin, the formula hydrates, conditions and softens hair to make detangling a breeze in the morning. Its weightless texture leaves your hair (and pillow) without residue and with long-lasting smoothness and shine.