- Strengthens, softens, and neutralizes unwanted yellow tones - Hydrates and brightens; the longer you treat, the brighter the results - Powered by Olaplex\'s patented Bond Building technology, it helps repair broken hair bonds and restore damage - For all blonde, lightened and grey hairOLAPLEX No.4P Blonde Enhancer Toning Shampoo Read The Beginners Guide to Olaplex here Read Rachels product review of OLAPLEX No.4P here   The best-selling Olaplex shampoo has now been formulated to suit blondes. Olaplex No.4-P Blonde Enhancer Toning Shampoo strengthens, softens, and neutralizes unwanted yellow tones for brighter, more manageable hair. With all the benefits of the original shampoo, this toner will keep your blonde hair looking salon fresh in-between visits to the hairdressers. The sulfate-free, highly concentrated formula allows for customizable toning - The longer you treat, the brighter the results. Whether your blonde comes naturally or from your hairdresser, light highlights or a full head, even if you’re rocking the grey! Olaplex No.4-P Blonde Enhancer Toning Shampoo will help to keep your colour bright. Key Benefits: - Suitable for all blonde, lightened or and grey hair, natural or coloured - Neutralizes unwanted yellow tones while strengthening and softening hair - Infused with Olaplex\'s patented Bond Building technology to repair broken bonds and restore damage - Results in just 1-5 minutes, customizable toning, the longer your treat, the brighter the results - Vegan friendly & cruelty-free formula, Paraben, Phosphate & Sulfate Free How to use: Apply to wet hair. Lather fully & let process for 1-3 minutes. Rinse. For more intense toning, leave on for up to 5 minutes. Follow with Olaplex No.5 Bond Maintenance Conditioner.  Tip: If the hair has product build-up, cleanse first with Olaplex No.4 Bond Maintenance Shampoo. Size: 250ml