Michigan Barber Practice Exam 2026 - Free Barber License Practice Questions and Study Guide

Using a barrier cream on the skin around the hairline is an effective method to prevent scalp irritation during a chemical treatment. Barrier creams create a protective layer on the skin, which reduces the likelihood of direct contact between the chemical substances used in treatments like coloring, perming, or relaxing, and the sensitive skin on the scalp. This protection is especially crucial because the scalp can react more intensely to chemicals, leading to irritation, burns, or allergic reactions.

Applying the chemical directly to the scalp poses a higher risk for irritation as it allows the harsh ingredients to come into direct contact with sensitive skin. Skipping the patch test can lead to unforeseen allergic reactions, as it is a necessary precaution to assess how the skin will react to the chemicals before applying them to a larger area. Increasing the treatment temperature can exacerbate irritation rather than alleviate it, as higher temperatures may amplify the skin's response to the chemicals being used. Thus, the practice of applying a barrier cream is essential for ensuring client safety and comfort during chemical treatments.