Which type of hair color does NOT require a developer?

The type of hair color that does not require a developer is temporary hair color. This type of color simply coats the hair shaft and does not penetrate the hair's natural color or structure. Temporary color is often formulated as a rinse or spray and can be easily washed out with shampoo, typically lasting only one wash or a few washes.

Temporary hair color does not contain the necessary chemical components that would require a developer to activate or change the color, which is essential for other types such as semi-permanent, demi-permanent, and permanent hair colors. These other types involve more complex chemical processes where a developer is needed to open the hair cuticle and facilitate the color change, allowing for longer-lasting effects. This makes temporary hair color distinct, as it can be used for experimentation or special occasions without any long-term commitment.