South Carolina Barber Practice Exam 2026 - Free Barber Practice Questions and Study Guide

A common characteristic of alkaline hair products is that they swell the hair cuticle. Alkaline products have a higher pH level, which causes the cuticle—the outer protective layer of the hair—to lift or swell. This lifting action allows for better penetration of the product into the hair shaft, making it more effective for treatments like coloring, perming, or deep conditioning.

In contrast, products that lower the pH tend to be acidic, leading to a smooth and closed cuticle, which is not typical of alkaline products. Alkaline products are also not specifically designed for oily hair; instead, they cater to a broader range of hair types, focusing on enhancing the effectiveness of chemical treatments. Alkaline products don’t usually impart a matte finish; instead, they may lead to a shinier appearance due to the raised cuticle allowing better light reflection. Therefore, swelling the hair cuticle is the key characteristic that defines alkaline hair products.