+22 Why Won't My Gray Hair Take Color 2023. 1.3 you’re using the wrong developer;. Web there are several reasons why hair dye doesn’t take on grey hair, and one of them is due to the lack of pigment in grey hair.

Web if your hair won’t take color, the first thing you need to do is find out why. Grey hair is caused by a reduction in melanin, which. Web your hair could be too greasy, or you might have left the dye in too long, washed the color out too soon after applying it or used the wrong dye or developer, but even if you’ve.