When it comes to blonde or grey hair, it's not always easy staying fresh and vibrant. That's why the Olaplex No.4P Blonde Enhancer™ Toning Shampoo is a godsend. This wonderful shampoo is designed specifically with blonde and grey tresses in mind, working like a charm to banish those unwanted brassy tones. It enhances hair with its toning magic, leaving locks bright and beautifully toned with each wash. This means saying goodbye to dull hues and hello to a radiant finish that turns heads. With this shampoo, you'll say cheerio to brassy tones and embrace the true power of your own personal silver lining.