This ultra-concentrated purple shampoo reduces breakage and hydrates as it cleanses and tones from roots to ends. Use No.4P to neutralize brassy hair and yellow tones for brighter, softer, stronger blond hair, gray hair, or highlighted hair. Effective on natural and color-treated hair. Clinically Proven 3X brighter hair* 91% agree hair was less brassy** 52% less breakage? after one use*** *Compared to top purple shampoos. **Based on an independent consumer perception study of 60 women with bleached/color-treated blonde hair. ***After 1 use when used as a system, clinically tested. KEY BENEFITS ? Neutralizes brassiness for brighter hair ? Strengthens hair and repairs damage ? Hydrates and softens hair Results With One Use B&A Mireya BEFORE AFTER Unretouched Images* *Results may vary. Results achieved by cleansing with N°.4P Blonde Enhancer Toning Shampoo, conditioning with N°.5P Blonde Enhancer Toning Conditioner, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling. B&A Laticia BEFORE AFTER Unretouched Images* *Results may vary. Results achieved by cleansing with N°.4P Blonde Enhancer Toning Shampoo, conditioning with N°.5P Blonde Enhancer Toning Conditioner, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling. B&A Piper BEFORE AFTER Unretouched Images* *Results may vary. Results achieved by cleansing with N°.4P Blonde Enhancer Toning Shampoo, conditioning with N°.5P Blonde Enhancer Toning Conditioner, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling. This product contains ingredients that may cause skin irritation on certain individuals, and a preliminary test according to the accompanying directions should first be made. This product may not be used for dyeing of eyelashes or eyebrows; to do so may cause blindness. Avoid contact with eyes. In case of contact with eyes, rinse immediately. Patch test: apply a small amount of the product on the inside of your elbow or behind the ear and wait for 48 hours. Do not use if irritation occurs. Wear gloves. Olaplex No.4P Blonde Enhancer Toning Shampoo 250ml The best-selling shampoo from Olaplex is now formulated to celebrate the beauty of blonde. Discover a cutting-edge toning system with the Olaplex No.4P Blonde Enhancer Toning Shampoo. The shampoo offers customisable blonde maintenance, helping to neutralise brassy tones while intensely moisturising and brightening the appearance of hair in just one use. Enriched with patented Olaplex Bond Building Technology, the formula works to transform dry, brittle strands into a soft, visibly shiny finish. It helps to enhance manageability, while delivering an illuminating effect. Saturated with highly-concentrated pigments, the best-selling purple shampoo allows you to choose your toning level: the longer you treat, the brighter the results. Suitable for all-over colour, balayage or natural blonde styles.