What does the pH scale measure in relation to hair products?

The pH scale is a crucial measurement in the context of hair products as it indicates the acidity or alkalinity of a product. This measurement ranges from 0 to 14, where values below 7 indicate acidity, values above 7 indicate alkalinity, and a value of 7 represents neutrality. Understanding the pH of hair products is important because it can influence how the product interacts with the hair and scalp. For instance, hair tends to be healthier and more manageable at a slightly acidic pH, usually between 4.5 and 5.5.

Products that are too alkaline can cause the hair cuticles to lift, leading to damage and frizz, while overly acidic products may not effectively cleanse or condition. Therefore, when selecting or recommending hair care products, knowing their pH helps in ensuring they are appropriate for maintaining the hair’s health and integrity.