Revlon blonderful bond defender is a post lightening hair protective treatment. This has been formulated to seal the cuticle after the lightening service thanks to its acid ph, features plexforce inside to help protect and preserve the hair's structural bonds. It helps to improve the condition of damaged hair. The result is hair is more resistant to breakage, soft hair with natural movement that is easy to comb and detangle. Apply on damp hair after rinsing the lightening mix and before shampooing. Pre-lightening treatment.