Product Description Thanks to the restorative properties of Cortex, this product keeps curls and straight hair beautiful, resulting in shiny and smooth hair. Key ingredients: Hydrolyzed Egg Shell Membrane (hair protection ingredient), Hydrolyzed Keratin (hair protection ingredient), Sericin (hair protection ingredient), Sodium Hyaluronate (moisturizing ingredient). How to Use After shampooing, remove excess water, apply thoroughly to the hair, let it sit, and then rinse well.