New Mexico Cosmetology Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

The significance of pH in hair products is primarily tied to its impact on hair cuticle health and overall product effectiveness. The pH scale ranges from 0 to 14, with a lower pH being more acidic and a higher pH being more alkaline. Hair is naturally slightly acidic, typically having a pH between 4.5 and 5.5. When hair care products maintain a pH within this range, they help to keep the hair cuticles closed and smooth, which enhances shine and manages frizz.

On the other hand, products with a high pH can cause the hair cuticles to raise or become damaged, leading to increased porosity and making the hair more susceptible to breakage and environmental damage. Thus, pH plays a crucial role not just in the structural integrity of the hair but also in how well products, such as conditioners and treatments, can penetrate and nourish the hair shaft. Maintaining the appropriate pH level ensures that hair products perform effectively, delivering better results for strength, moisture retention, and overall hair health.