What is a defining feature of semipermanent hair color?

The defining feature of semipermanent hair color is that it lies on the hair's surface. Semipermanent hair color is designed to penetrate the hair shaft only partially, which means it does not chemically alter the natural pigment of the hair. As a result, this type of color provides a temporary change that gradually fades over time with washing.

This characteristic makes semipermanent color an excellent choice for those looking to enhance their natural color or add a subtle change without the commitment of a permanent dye. Because it sits on the hair's surface, it can be easily applied and adjusted, allowing for flexibility in color choice and maintenance. This also means that semipermanent hair color typically does not provide the same level of longevity or the same degree of gray coverage as permanent colors, as it does not penetrate as deeply into the hair's structure.