An overnight leave-in serum that intensely nourishes dry hair over 8 hours for softer and easier hair to style the next morning. How To Use Use 2 to 4 pumps, depending on the length and thickness of the hair. Apply on lengths and ends. For application on wet hair, towel-dry hair before applying. Style hair as desired overnight. Leave in. No rinse necessary. Reapply as needed on dry hair for an added boost of overnight nutrition.