Red Seal Hairstylist Practice Exam

The main role of a pH balanced shampoo is to cleanse hair without altering its natural acid mantle. Hair and scalp have a natural protective barrier known as the acid mantle, which is primarily composed of fatty acids and lactic acid. This barrier helps to protect the hair and scalp from environmental damage, bacteria, and dehydration. A pH balanced shampoo typically has a pH level close to that of the hair and scalp, which is around 4.5 to 5.5. By maintaining this balance, the shampoo effectively cleanses the hair without disrupting the acid mantle, thus preserving the health and integrity of the hair.

Using a pH balanced shampoo helps prevent issues such as dryness, irritation, and damage that can occur when products have a higher or lower pH. This gentle formulation is especially beneficial for frequent use and for individuals with color-treated or chemically processed hair, as it assists in maintaining the hair's natural moisture and shine.

In contrast, other options provide different benefits that do not align with the primary purpose of a pH balanced shampoo. For example, providing long-lasting fragrance focuses on scent rather than the shampoo's pH properties. Deep conditioning is a separate function associated with conditioners, and coloring the hair pertains to hair dye products,