Schwarzkopf Bonacure Cell Perfector Repair Rescue Reversilane S.O.S. Elixir 3.38oz is the 1st express 3-phase rinse-off intensive treatment to offer instant in-depth repairing action for damaged hair. Schwarzkopf Professional BC Bonacure Repair Rescue SOS Elixir's innovative formula brings back natural motion, strength and elasticity. The upper phase contains the Reversilane Technology, the intermediary phase contains Cell Perfector and the lower phase contains a spreading system that helps to improve the distribution, hence the efficiency of the formula.