How is an acid-balanced shampoo formulated?

An acid-balanced shampoo is specifically formulated to match the natural pH of the hair and scalp, which typically ranges from about 4.5 to 5.5. This pH balance is crucial because it helps to maintain the hair's natural moisture, protect the hair cuticle, and ensure that the scalp remains healthy. A shampoo with the correct pH level is less likely to strip the hair of its natural oils or cause irritation to the scalp, making it suitable for a variety of hair types, particularly chemically treated or colored hair.

Creating a lather, removing excess oil, or adding volume to hair are functions that shampoos may perform but are not the primary focus of an acid-balanced formula. While lathering is important for effective cleansing, a shampoo could create a lather without being acid-balanced. Similarly, shampoos may target oil removal or volume enhancement through different formulations, but they don't necessarily relate to the pH balance that is the defining feature of an acid-balanced shampoo.