An overnight leave-in serum that intensely nourishes dry hair over 8 hours for softer and easier hair to style the next morning. Benefits 8H of overnight nourishment, in combination with Bain Satin 2 + Masquintense. Provides easier detangling, avoiding pillow friction. Hair fiber is softer to the touch. Evolving fragrance to promote relaxed sleep and energy in the morning. Increases manageability on normal to coarse hair. Hydrates without weighting down on fine hair . Provides definition to curly hair . Ingredients For the first time, sleep your way to beautiful hair. - Iris Root extract: nourishes progressively & durably over 8h (reverses daytime loss of nutrients & creates a beauty coat on fiber) - 5 vitamins blend : seals cuticles with a satin finish (progressive nutrient penetration & durable anchroring )