Don't gamble on indigo fading for you though. It's permanent for many after the first application, and tends not to bleach out ever. If you try to it becomes yellow bleached hair + blue indigo = green.

Indigo should only be used in conjunction with henna in some way. Otherwise blue + your greys = blue.
Originally Posted by Riot Crrl
I don't think it'd be for me because I want to stop coloring my hair some time in the next five years. I'm pretty sure I'll be atleast 50% grey by then and want to be natural. Guess I'll stick with semi-permanent.