You win some you blues some Blue Weekend Super Cool Colour turns blonde hair a bright sapphire blue that lasts between 1050 washes May leave a stubborn bluegreen stain use BLEACH LONDON Ros Shampoo and Conditioner to neutralise Our gentle and semipermanent Super Cool Colours are suitable for all hair types Blue Weekend works best on light blonde hair thats lightened and toned with icy White Toner Also gives natural blonde and light brown hair for a soft blue All BLEACH LONDON products are Vegan and PETAApproved formulas No bleach ammonia or parabens Formulated with Panthenol Hydrolyzed Soy Protein and Wheat Amino Acids for shiny silky soft strands Effortless Hue Generously applying it to clean toweldried hair Leave it on for 30 minutes before rinsing Make sure to follow all instructions provided One bottle is perfect for short hair or coloring freshly bleached and toned roots Pro Tip Stay true to the blue mix Blue Weekend with Reincarnation Bond Restoring Mask when needed Avoid using hot water when rinsing to preserve your colour May leave a bluegreen residue that can be neutralised with our Ros Shampoo