Lightweight Conditioner with Keratin and Silk Proteins transforms hair into silky-soft locks with bounce. This advanced formula provides up to 98% less breakage in 1 week. The PrX Reparatives collection is for women seeking to prevent and repair damage to their hair. These women have fragile, porous hair due to frequent heat styling or chemical processing and often use repair treatments and conditioners to restore natural texture and shine. Each product contains advanced ingredients including Keratin - a natural fiber that makes up 90% of hair's structure and Silk Proteins - one of the world's strongest naturally occurring proteins. Our Dual-Action Technology was specially developed by Frederic Fekkai and his team of experts to provide the latest reparative care to hair by combining Keratin Protection and Damage Restoration. Keratin Protection - Works at the foundation of hair. Includes keratin, the building block of strong, virgin hair. Reinforces weak spots along the hair fiber where keratin loss has occurred. Creates a protective shield that defends against styling and chemical damage. Helps prevent keratin loss before damage is even visible. Damage Restoration - Restores external texture & resilience. Rich, luxurious emollients are deposited to restore softness & smoothness. Strengthens against hair breakage to help prevent future damage. Helps resist split ends and visible damage.