How Long Does Permanent Hair Dye Last Before It Fades?
Permanent hair dye typically lasts between four to six weeks before it starts to fade. However, the duration of the color depends on factors such as the color of the dye, the quality of the product, hair texture, and how often the hair is washed. Additionally, hair that is exposed to sunlight and chlorine-treated water may fade faster than hair that is not. It is advisable to use color-safe and sulfate-free hair products to help maintain the color for as long as possible.