What are the three main categories of hair color?

The three main categories of hair color are recognized as temporary, semi-permanent, and permanent. This classification is based on the longevity and chemical composition of the color products used.

Temporary hair color provides a short-term change, often lasting only until the next wash. These colors coat the hair shaft and do not penetrate the cuticle, making them ideal for those seeking a non-committal option, such as for special occasions.

Semi-permanent hair color is designed to last longer than temporary options, typically fading gradually over several washes. It partially penetrates the hair shaft and offers a balance between commitment and flexibility, allowing users to enjoy the vibrancy of color without the long-term effects associated with permanent dyes.

Permanent hair color, on the other hand, involves a chemical process that opens the hair cuticle to allow the color to penetrate deeply and bond with the hair structure. This results in long-lasting color that requires a regrowth process as natural hair grows in, necessitating maintenance to cover roots.

Understanding these categories is crucial for professionals in the cosmetology field, as it influences their recommendations to clients based on the desired outcome and maintenance level.