Amika Dream Routine Overnight Hydrating Hair Mask – 3.3oz works while you sleep to deliver deep, long-lasting hydration to dry, thirsty hair. Infused with hyaluronic acid, coconut water, and blue algae, this no-rinse treatment restores moisture, boosts softness, and improves manageability overnight. Wake up to hair that feels smoother, healthier, and more hydrated — with zero effort and no need to rinse in the morning.