L'Oreal Paris Extraordinary Oil Lustrous Oil Serum leave in hair treatment hydrates and nourishes to transform dry, lifeless hair to soft and lustrous. Infused with argan oil, the treatment leaves hair that is sumptuously soft, lightweight, and brilliantly shiny in just one wash*. For best results, use Extraordinary Oil Lustrous Oil Serum treatment with L'Oreal Paris Extraordinary Oil shampoo and conditioner. • Luscious lightweight oil for dry, lifeless hair • Apply after shampoo and conditioner for instant shine plus silky touch • Blend of oils and botanical extracts hydrate and seal the cuticle • Deep nourishment without weight *When using full system of shampoo, conditioner, and treatment vs. a non-conditioning shampoo. Packaging may vary, what you receive may not be what is reflected on site. After using the Extraordinary Oil Shampoo and Conditioner, apply throughout the length of hair concentrating on the ends. Can be used before shampoo to nourish and protect hair, before styling to control and discipline hair, or as a finishing tough for exquisite softness and lustrous shine.