Oklahoma Barber Practice Exam 2024 - Free Barber License Practice Questions and Study Guide

Before application, oxidation tints must be properly mixed with hydrogen peroxide. Unlike A, water is not chemically reactive enough to react with the tint and produce the desired color. Shampoo, option C, is not a suitable mixing agent and may not yield the desired results. Ammonia, option D, is also not a suitable mixing agent and may cause an adverse reaction with the tint. Therefore, the best and only correct choice is hydrogen peroxide to ensure the proper mixing and application of oxidation tints.