1 New Schwarzkoph Professional BC BONACURE HAIRTHERAPY CELL PERFECTOR COLOR FREEZE 6.8oz. Detangles coloured hair. The formula with CELL PERFECTOR Technology and new ph 4.5 Balancer brings hair to its optimal ph level to perfectly lock in colour pigments. Application: Work into wet hair and rinse after 2 minutes. Buy now at a great price with free shipping. Thank you for looking and have a happy day.