Mississippi Cosmetology Board Practice Exam 2025 - Free Cosmetology Practice Questions and Study Guide

The choice of permanent dye is the correct answer because it is specifically formulated to provide a long-lasting change in hair color. The chemical process involved with permanent dyes includes the use of ammonia and developer, which opens the hair cuticle and allows the dye to penetrate deeply within the hair shaft. This results in a color change that can last for several weeks or even months, depending on the hair's condition and the upkeep after coloring.

Permanent dyes are designed to provide a more substantial and enduring color change compared to other types of dye. For example, temporary dyes coat the hair's surface but do not penetrate the cuticle; hence, they wash out with a few shampoos. Demi-permanent dyes offer a more extended duration than temporary options but generally do not provide the same permanence since they still fade over time and are often used for enhancing natural tones or providing subtle color rather than a dramatic change.

Natural dyes, such as henna, can also provide a lasting color change, but they may not have the same level of vibrancy or range of colors that synthetic permanent dyes do. Therefore, for a significant and lasting alteration in hair color, permanent dye is the optimal choice.