How long can a semi-permanent hair color typically last?

Semi-permanent hair color is designed to enhance or change the color of the hair without the long-lasting effects of permanent dye. Typically, semi-permanent hair color lasts approximately 4 to 6 shampoos. This duration is due to the fact that semi-permanent colors do not contain ammonia and do not penetrate the hair shaft as deeply as permanent colors do. Instead, they coat the hair cuticle and gradually wash out with each shampoo.

This temporary nature makes semi-permanent color popular for those looking for a less commitment to change their hair color or to experiment with different shades. Additionally, various factors, such as hair type, condition, and the frequency of washing, can influence how long the color remains vibrant. However, within the general lifespan of semi-permanent color, 4 to 6 shampoos represents the standard expectation for color longevity.