PSI Barbering Practice Exam 2025 – All-in-One Resource to Master Your Certification!

Hot water can cause the scalp to flake or become dry due to its potential to strip away natural oils that protect and nourish the skin. High temperatures can lead to dehydration of the scalp, resulting in a compromised moisture barrier. When this occurs, the scalp may not retain adequate hydration, leading to dryness and flaking. This is similar to how skin reacts to heat; it can lose its natural moisture and protective elements when exposed to excessively hot temperatures.

In contrast, the other options highlight conditions that are not typically associated with hot water exposure. For example, oily and greasy conditions are often linked to overactive sebaceous glands, which can be exacerbated by other factors like hormones or product buildup rather than hot water itself. Additionally, hot water does not increase the elasticity of the skin or scalp. Instead, it can make the scalp vulnerable and potentially more sensitive, but its primary effect is to dry out the skin, leading to flaking.