What is the function of the pH scale in hair products?

The pH scale plays a crucial role in hair products as it measures the acidity or alkalinity of these products, which can significantly affect the quality and health of the hair. Hair and scalp health are closely related to pH levels; normal hair has a slightly acidic pH (around 4.5 to 5.5). When hair products are applied, their pH can influence various factors, such as cuticle condition, moisture retention, and overall hair integrity.

For instance, acidic products can help close the hair cuticle, leading to smoother hair and less frizz, while alkaline products might open the cuticle, which can be beneficial for certain processes like perming or coloring, but excessive use may lead to damage if the cuticle remains raised for too long. Monitoring the pH of hair products is essential for maintaining proper hair care routines tailored to individual needs, as well as for achieving desired results in treatments and styling.