well lots of women do without any problems but I think mw advice not to use it until after 12 weeks of pregnancy. I'm waiting another week or so before I do mine.
A few of the girls in tri 2 have had their hair dyed while preggers. i think waiting till after 12 weeks is a good move. Post in tri 2 as well and the girls there will be able to answer this question a bit better Id ask you regular hairdresser what product they use will be ok.
I've been doing mine - I spoke to my hairdresser and she went as far to say that it's a myth that it can cause harm. The only problem that can arise is that your hair texture changes so the colour may not "take" so well. To be on the safe side I always do it in an airy room with the window open xxx
I really dont know, I have read conflicing stuff about this...I dyed mine at christmas time, before I found out I was PG. EEK!
I have been doing mine, my hairdresser comes to me about every 4 weeks and i think the main problem she suggested was that the colour might go different on your hair.