Barber Practice State Board Practice Exam 2026 - Free Barber State Board Practice Questions and Study Guide

Applying products that contain alcohol to the hair or scalp is ideally done after high-frequency treatments. High-frequency treatments utilize a specific electrical current to stimulate the scalp, promote hair growth, and can help with various scalp issues. Since alcohol can have a drying effect, using it after such a treatment allows it to perform more effectively by ensuring the scalp is already prepared for product application.

After high-frequency treatments, the scalp is often cleaner and more receptive to product absorption. The stimulation increases blood circulation and may enhance the effectiveness of the alcohol-containing products, making them work better rather than potentially exacerbating dryness or irritation if applied beforehand.

In contrast, applying products containing alcohol after other treatments like coloring, hot oil, or deep conditioning could interfere with the intended effects of those treatments, as the alcohol may strip moisture or alter the hair's condition.