Comb-in hair color, a semi-permanent hair dye, is applied by combing the product directly onto the hair. Unlike traditional hair dyes, it doesn't require mixing with a developer or using gloves, offering convenience and accessibility.
Comb-in hair color is beneficial for temporary or touch-up purposes. It enhances vibrancy, covers gray hairs, and allows for easy application at home. Historically, the invention of comb-in hair color in the 1950s revolutionized home hair dyeing, providing individuals with greater flexibility and control over their hair color.