What is the standard pH range for hair products?

The standard pH range for hair products is between 4.5 to 5.5, which closely aligns with the natural pH of healthy hair and scalp. This slightly acidic range helps to maintain the integrity of the hair cuticle, ensuring that it remains smooth and sealed. When hair products fall within this pH range, they can effectively cleanse, condition, and style hair without causing excessive dryness or damage.

Maintaining this pH balance is crucial because products that are too alkaline (higher pH) can swell the hair shaft and lead to structural damage, while excessively acidic products (lower pH) can make hair feel stiff or lead to other issues. Therefore, choosing hair products within the 4.5 to 5.5 range supports the overall health and appearance of hair.