How does temporary hair color primarily function on the hair?

Temporary hair color primarily functions by coating the hair's surface. This method involves applying a color that does not penetrate the hair structure deeply but rather settles on the outer layer of the hair. This type of color typically lasts until the hair is washed, as it does not bond with the hair's natural pigment or alter the hair's internal structure.

The nature of temporary hair color allows for easy application and removal, making it a popular choice for those looking to experiment with colors without making a long-term commitment. It offers vibrant results without the risk of damage that can sometimes occur with more permanent hair coloring options, which can alter the hair’s structure and color on a more enduring basis.