What is the pH level range of most hair coloring products?

The pH level range of most hair coloring products is typically between 7 and 9. This slightly alkaline range helps to open up the hair cuticle, allowing the color to penetrate the hair shaft effectively. When the cuticle is lifted, the dye can more easily bond with the hair's natural keratin, resulting in a more vibrant and long-lasting color.

In hair coloring, maintaining the right pH balance is crucial since it influences the overall effectiveness of the dye and can affect the hair's health. A pH that is too low may not lift the cuticle enough, while a pH that is too high could lead to damage or over-processing of the hair. Therefore, products designed for hair coloring are formulated with a pH in the range of 7 to 9 to ensure optimal results.