No. 4P Blonde Enhancer™ Toning Shampoo, is the FIRST toning shampoo to strengthen, soften, and neutralize unwanted yellow tones for brighter, more manageable hair for all blonde, lightened, and grey hair. Infused with OLAPLEX’s exclusive multi-patented technology to relink the disulfide bonds in the hair to strengthen and repair, OLAPLEX No. 4P Blonde Enhancer™ Toning Shampoo cleanses, tones, repairs and protects while keeping hair hydrated from roots to ends. Gentle enough to use every shampoo, this highly-concentrated formula is clinically proven to deliver 3x brighter results compared to top purple shampoos* and allows for customized toning – the longer you treat, the brighter the results.
*According to an independent clinical study.