Iowa Cosmetology Practice Exam 2026 - Free Cosmetology Practice Questions and Study Guide

The feature of hair products that indicates they are pH balanced is a pH level between 4.5 to 5.5. This range is essential for maintaining the health of the hair and scalp, as it is close to the natural pH of human hair and skin. Keeping the product within this pH range helps to ensure that the hair cuticle is closed, which reduces frizz and enhances shine, promoting overall hair health. Additionally, using products that are pH balanced can help prevent issues such as dryness or irritation that can arise from using products with extreme pH levels. Understanding this aspect of hair care is fundamental for cosmetologists, as they need to recommend products that will not disturb the natural protective acid mantle of the scalp and hair.