•Application: Before bedtime, apply 2-4 pumps (depending on hair length and thickness) to dry or towel-dried hair.
•No Rinsing Needed: The serum absorbs overnight, so there's no need to rinse it out in the morning.
•Styling Options: For added texture, you can braid your hair or tie it in a loose bun after application to achieve natural waves upon waking. Kérastase USA