Wyoming State Board Barber Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

The measurement of pH in hair care specifically refers to the acidity or alkalinity of a substance. pH is a scale that ranges from 0 to 14, where values below 7 indicate acidity, values at 7 are neutral, and values above 7 denote alkalinity. In hair care, understanding pH is crucial because it affects hair health and how products interact with the hair and scalp. For example, many hair care products, such as shampoos, conditioners, and treatments, have specific pH levels to either match or correct the natural pH of hair and the scalp.

Hair has a natural pH level around 4.5 to 5.5, which is slightly acidic. When products with a pH that is too high (alkaline) are used, they can disrupt the natural balance, leading to issues like cuticle lifting, increased frizz, and even damage. Conversely, products that maintain or restore an appropriate pH can help keep hair smooth, shiny, and healthier overall. Thus, pH is an essential factor in hair care relating to its acidity or alkalinity rather than its texture, length, or volume.