PSI Barbering Practice Exam

What should be expected from hair products labeled as pH-balanced?

1. They will change hair color

2. They will strip hair moisture

3. They will maintain acidity levels

4. They will irritate the scalp

The correct answer is: They will maintain acidity levels

Hair products labeled as pH-balanced aim to maintain a neutral pH level that is harmonious with the natural pH of the hair and scalp, which typically ranges from 4.5 to 5.5. This mildly acidic range is essential for keeping the hair's cuticle closed and intact, thus promoting shine and reducing frizz. When products are pH-balanced, they help to maintain the natural acidity levels on the hair and scalp, minimizing damage and irritation that can occur when hair products are too alkaline or too acidic. In contrast, products that change hair color often contain strong chemicals that alter the chemical structure of the hair, which is not characteristic of pH-balanced products. Stripping hair moisture is also an outcome typically associated with non-pH-balanced products, which can lead to dryness and damage. Finally, irritating the scalp is a concern predominantly related to harsh ingredients or imbalanced pH levels, rather than products specifically formulated to be pH-balanced. Therefore, maintaining acidity levels aligns directly with the primary intention behind labeling a product as pH-balanced.