Oh My Blonde Blonde Sealer 500ml should be used at the end of your service. Blonde Sealer acts as a top up to the &-Plex found in Oh My Blonde decolourisers and toners. Blonde Sealer Ph balances the hair and scalp, Closes the cutlicle, adds extra &-plex which protects the bonds in the hair an finally helps to seal in colour. Rinse away your bleaching product and apply Blonde Sealer, leave for five minutes. If toning apply after toning. Then shampoo and condition as normal.