What does a product's pH level affect regarding hair and scalp health?

The pH level of a product plays a crucial role in determining how effective it is in cleansing and nourishing the hair and scalp. The hair and scalp have a natural pH level that usually ranges from about 4.5 to 5.5, which is slightly acidic. When hair care products are formulated within or close to this pH range, they work optimally to maintain the health of the hair and scalp.

For example, products with a higher pH (alkaline) can cause the hair cuticles to open up, which may lead to dryness and frizz, making it harder for the hair to retain moisture. On the other hand, products that are too acidic may overly close the cuticles, potentially making it difficult for the product to penetrate the hair shaft effectively. This delicate balance affects not only how well the hair can be cleansed of dirt and buildup but also how nourishing ingredients can be absorbed by the hair and scalp.

In this way, understanding pH and its impact on product performance is essential for achieving healthy hair and scalp, making the ability of products to cleanse and nourish a direct consequence of their pH formulation.