What does the pH scale measure in beauty therapy applications?

The pH scale is a fundamental concept in beauty therapy as it is used to measure the acidity or alkalinity of a solution. The scale ranges from 0 to 14, where values below 7 indicate acidity, values above 7 indicate alkalinity, and a value of 7 is considered neutral. Understanding pH is crucial in various beauty treatments, such as skincare and hair care, because it influences the effectiveness of products and their compatibility with skin types.

For instance, the skin has a natural pH balance around 4.5 to 5.5, which is slightly acidic. Products formulated for skin care must consider this pH range, as using products that are too alkaline can disrupt the skin barrier, leading to irritation or other issues. Conversely, products that match or complement the skin's pH will more likely maintain or restore the skin's health.

In hair care, the pH level affects the cuticle's integrity and the hair's overall health. Treatments and products that maintain an appropriate pH can help preserve moisture and prevent damage, making the understanding of pH very relevant in a beauty therapy context.