Georgia Barber License Practice Exam 2025 - Free Barber License Practice Questions and Study Guide

Hair coloring often involves chemical processes that alter the hair's structure and color. Ammonia and hydrogen peroxide are commonly used in these processes due to their specific functions.

Ammonia acts as an alkaline agent that opens the cuticle of the hair shaft, allowing color molecules to penetrate deeply into the hair. This is crucial because for semi-permanent and permanent color to be effective, the hair's outer layer must be opened.

Hydrogen peroxide serves as a developer that activates the dye and also acts as a bleaching agent if the goal is to lighten the hair. It works by oxidizing the natural pigments in the hair, allowing for a new color to emerge. Together, ammonia and hydrogen peroxide create a powerful combination that is effective for various hair coloring techniques, including the application of permanent dyes.

The other chemicals listed do not serve the same purpose as ammonia and hydrogen peroxide in the context of hair coloring. Alcohol and vinegar may have some applications in hair care but are not primary agents in the dyeing process, while water and salt are mainly used in other cosmetic applications rather than hair coloring. Olive oil and vinegar might be used as natural treatments for hair but do not function as hair colorants.