I personally do it and don't see a problem with it. I just get highlights though. I would think it wouldn't be a problem as long as you're not doing it every month or something <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/smile.gif" style="border:0px solid;" title="smile">
It's fine. I'm a hairdresser...I specialize in color. I colored hair through both of my pregnancies, including coloring my own hair. The kids don't have 2 heads or anything<img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/lol.gif" style="border:0px solid;" title="lol"><br>
I nursed my son for 2 years.....never changed my job and continued to color my own hair as well. He's a big healthy 4 year old!
Ideally I wouldn't risk the exposure but in the real world I'm five months postpartum with the hair loss to prove it and am otherwise not feeling very pretty. Once a month or so I colour my hair, I'd feel really crappy with roots and greys and such.