Arizona Cosmetology Practice Exam

Using high pH products on hair commonly results in the opening of the cuticle. The cuticle is the outermost layer of the hair shaft and is responsible for protecting the inner layers. High pH levels can raise the cuticle, making it more porous and allowing for better penetration of certain treatments and products. This characteristic is particularly useful in processes like coloring or chemical texturizing, where the cuticle needs to be opened to achieve the desired results. However, while opening the cuticle can be beneficial for some treatments, it may also make hair more susceptible to damage and lead to issues like frizz or dryness if not handled properly.

Other options, such as strengthening the hair or reducing frizz, typically don't align with the effects of high pH products, as these can often lead to weaker hair structures if not used carefully. Enhancing curl retention is more associated with products meant to keep hair smooth and close the cuticle rather than opening it. Hence, the common effect of using high pH products on hair is indeed the opening of the cuticle.