Famous Hair Care Before Coloring 2023. However, you want there to be a natural protective oil layer on your scalp to act as a barrier against the chemicals in the hair dye. The amount of time you should leave hair dye in before rinsing depends on your specific product and your desired result.

Web 01 of 10 don't: 2.2 conditioning color treated hair; However, you want there to be a natural protective oil layer on your scalp to act as a barrier against the chemicals in the hair dye.