About this item pH 45, known from skin care for balancing the pH level of the skin to retain a healthy condition, is added to BC BONACURE formulations to freeze color pigments inside the hair matrix Formulated for colored and highlighted hair that shows unwanted yellow tone direction or is white and needs subtle silver tone direction Gently yet effectively cleanses over-processed colored hair Strengthens the hair structure to optimal pH 45 for reduced color fade Delivers extra care and shine Apply to wet hair. Leave for 1-2 minutes. Rinse thoroughly. Follow with next steps of the appropriate BC BONACURE care regimen. Suitable for daily use.