How long does non permanent dye last?

Non-permanent dye typically lasts between 4 to 12 washes, depending on factors such as hair type, dye formulation, and how often you wash your hair. These dyes gradually fade with each wash and may last longer on color-treated or darker hair. To maximize the longevity of non-permanent dye, using sulfate-free shampoos and cold water can help preserve the color.