Connecticut Hairdresser License Exam Prep 2025 - Complete Practice Test

The pH level plays a significant role in the overall health and stability of the hair cuticle. When the hair's pH is balanced, the cuticle layer, which protects the inner structure of the hair, lies flat and is less prone to damage. This helps to maintain moisture, prevent frizz, and contribute to shine and overall hair health.

When the pH is too alkaline, the cuticle can become raised, leading to issues such as increased porosity, which can result in moisture loss, breakage, and dullness. Conversely, when the pH is too acidic, it may not effectively open the cuticle for treatments like color or conditioning products to penetrate properly. Therefore, maintaining an appropriate pH level is crucial for protecting the cuticle and ensuring the overall health of the hair.

The other options do not accurately represent the direct effects of pH on hair. While hair color can be influenced by pH when using certain coloring products, it is not the primary function of pH itself. Similarly, pH does not directly control the rate of hair growth or determine hair elasticity in a straightforward manner.