What is the effect of a low pH shampoo on the hair?

A low pH shampoo is formulated to have a more acidic nature, which plays an important role in the hair care process. When used on the hair, a low pH shampoo helps the cuticle, the outermost layer of the hair strand, to lay flat. This flattening of the cuticle is significant because it reduces friction between the hair strands, leading to a smoother surface and enhanced shine.

The smoothness and shine result from the way light reflects off a flat surface versus a rough one. When the cuticles are tight and flat, they reflect light more evenly, giving the hair a more polished appearance. Additionally, maintaining a low pH can help to preserve hair's natural moisture balance, which further contributes to its overall health and shine.

While a lower pH can have numerous benefits, it does not primarily focus on increasing volume, removing oil, or opening the cuticle for absorption, distinguishing it as particularly effective for achieving smooth and shiny hair.