New Mexico Cosmetology Practice Exam 2025 - Free Cosmetology Practice Questions and Study Guide

When selecting hair dye, it is essential to consider potential allergic reactions because some individuals may have sensitivities or allergies to specific ingredients commonly found in hair coloring products. Allergic reactions can range from mild irritation to severe skin reactions, making it crucial for anyone using hair dye to do a patch test before applying the product to the entire scalp and hair. This precaution helps to ensure that the dye will not cause an adverse reaction and allows the person to enjoy the cosmetic benefits of the hair color without compromising their health.

Other factors such as the pH level and cost of the dye are also relevant in the decision-making process; however, the immediate safety concern of potential allergic reactions takes precedence. The color name may describe the shade but does not provide any critical information about the dye's suitability for a person’s skin type or possible allergic issues.