What is the role of pH in hair care products?

The role of pH in hair care products is crucial for maintaining the hair's health and integrity. The correct choice, which highlights the importance of balancing the hair's natural acidity, refers to the fact that healthy hair and scalp typically have a slightly acidic pH, usually in the range of 4.5 to 5.5.

When hair care products are formulated with a pH that matches or supports this natural acidity, they can help to close the hair cuticle, preventing moisture loss and reducing damage. This balance is essential for maintaining shine, smoothness, and overall hair quality. Products that are too alkaline can cause the cuticle to lift, resulting in frizz, increased porosity, and potential breakage.

Understanding the pH levels of hair care products allows cosmetologists to select and recommend products that promote optimal hair health and align with the needs of different hair types and conditions.