What does "pH" indicate in hair products?

The concept of "pH" in hair products refers to the acidity or alkalinity of a solution, which is measured on a scale of 0 to 14. A pH level of 7 is considered neutral, levels below 7 indicate acidity, and levels above 7 indicate alkalinity. Understanding the pH level of hair products is crucial because it affects the hair's health and appearance. For example, acidic products (pH below 7) can help to close the cuticle of the hair, leading to smoother and shinier strands, while alkaline products (pH above 7) can open the cuticle, making the hair more susceptible to damage.

This knowledge helps professionals select the right products for their clients based on the desired outcome for hair texture and treatment. Factors like whether hair is colored, chemically treated, or in need of hydration all depend on the pH levels of the products used. Thus, the indication of pH in hair products is essential for maintaining the overall condition and aesthetics of hair.