Olaplex No. 4P Blonde Enhancer Toning Shampoo sells on Amazon. I think the price is very good. Please read some of the reviews and see people thought of the product.**If you’re not sure whether to buy, add to cart, and you can come back to it later!**

Infused with patented OLAPLEX® Bond Building Technology, this customizable toning shampoo strengthens, softens and neutralizes unwanted yellow tones for brighter, more manageable hair.