WHAT IT IS Bonacure Fibre Force Shampoo gently cleanses extremely damaged hair and repairs it from within. WHAT IT DOES Schwarzkopf Professional BC Bonacure Fibre Force Shampoo brings even the most eroded hair to its optimal level of force and resilience. This shampoo gently cleanses extremely damaged hair and restores it from within. For the first time the formulas with Micronized Hair-Identical Keratins penetrate deeply into the hair architecture to re-cement specifically the Cell-Membrane-Complex the intercellular bonding cement responsible for strong and resilient hair fiber. Within 4-10 weeks depending on the hair quality Fibre Force strengthens the hair and restores original hair quality.