If I let my hair grow in naturally, I'd have salt and pepper hair which is really very ugly. I have to dye my hair now. It's too late to go back. I dyed it a couple of shades lighter then my natural color so when it starts growing in, it looks really funky. Dark brown hair and shiny grey roots against light brown hair. Not a pretty picture. Do as Fay did if you're going to dye it, use a natural dye so it will fade out.