How do pH levels in shampoo affect hair?

The impact of pH levels in shampoo primarily relates to how they influence the hair's overall health and manageability. Shampoos are formulated to have specific pH levels that either help to maintain or restore the natural pH of hair. A pH-balanced shampoo typically ranges between 4.5 and 5.5, which is close to the natural pH of hair.

When using a shampoo with the appropriate pH, the cuticle layer of the hair shaft lies flat, leading to smoother, shinier hair that is easier to manage. This is because a flat cuticle surface reflects light better, giving hair a shiny appearance. Additionally, a well-balanced pH can help to prevent frizz and tangling, making hair more manageable.

In contrast, shampoos that are too alkaline can raise the cuticle, resulting in rougher texture and increased frizz, while those that are too acidic may not cleanse effectively. Therefore, understanding pH levels can help consumers choose a shampoo that not only cleanses well but also enhances the shininess and manageability of their hair.