HI mums to be,
Didn't think to post this before (my dd is 15 mths) but just recommended this to a friend who's expecting and it's really worked for her too. I was very cautious about just about everything whilst I was pregnant, but one thing I missed was having my hair coloured. I know there is no clear evidence of problems, but I just couldn't bring myself to do it (even highlights). So instead, I tried the Aveda colour shampoo and conditioner (I have mid brown hair so I used the clove one). It is fabulous, my hair looked great, really shiny and rich colour but it's totally herbal. IT's not cheap but I found once I'd used it a couple of times in a row, I did one was with the Aveda products and the next wash just with herbal essences, worked a treat and one pruchase lasted just about the whole pregnancy.
Hope this helps!