Bond Builder Restructuring Treatment works beneath the surface of the hair by strengthening existing bonds and restoring broken bonds. The intensive treatment strengthens the hair from the inside out and makes heavily stressed strands stronger and smoother, visibly reducing damage and breakage. Application: Moisten the hair thoroughly before shampooing and apply in sections. Work into the hair with your fingertips and leave on for 10-20 minutes (the longer, the better). Rinse well and follow with the appropriate Philip Kingsley Shampoo, Conditioner and Scalp Toner. Finer textured hair should be washed twice to remove all product. For best results, use at least once a week. For damaged and dry hair in need of moisture, use in conjunction with our Elasticizer Deep-Conditioning Treatment.