Become an overnight success with KEVIN.MURPHY NIGHT.SHIFT, a deeply replenishing overnight serum powered by Hyaluronic Acid and antioxidant-rich Australian Kakadu Plum. This leave-in treatment delivers up to 12 hours of hydration* absorbing into each strand to strengthen and smooth while you sleep. Rise and shine to hair that’s 2x stronger1, effortlessly manageable and touchably soft. No rinse required.