Help maintain hair’s natural p H from the comfort of your own home, with the p H Bonder Post Service Perfector Duo from Redken. Achieving additional shine & smoothness, the formula is designed to be used once a week, in line with a Redken haircare regimen. Suitable for all hair types, the p H Bonder is a unique synergistic system that works to protect bonds & reduce breakage after salon treatments such as bleach or other colouring treatments. The formula is able to visibly increase the strength of the hair & improve its elasticity, whilst leaving locks touchably soft, smooth & ultra shiny.