Idaho Cosmetology Licensure Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

The basic types of hair color are categorized as temporary, semi-permanent, and permanent because these classifications indicate how long the color will last and how it interacts with the hair.

Temporary hair color typically lasts for a single wash or a few shampoos, as it coats the outer layer of the hair without penetrating the cuticle. Semi-permanent hair color, on the other hand, can last for several weeks or up to 28 shampoos, as it slightly penetrates the hair shaft and gradually fades over time. Permanent hair color offers a more lasting solution, altering the natural pigment of the hair by penetrating deeper and even changing the structure of the hair.

Understanding these distinctions is fundamental for anyone in the cosmetology field, as it helps professionals choose the right type of color based on a client's preferences, desired longevity of color, and hair condition. This knowledge is crucial for offering appropriate services and managing client expectations.