Yes its ok to dye your hair. But because of the fumes you have to be in a well ventilated area.
Yeah but your hair may not hold the color like it usually does.
I dyed my hair all throughout my last pregnancy and I typically dyed it black.
They say that black is the worst, however there technically isn't any direct correlation from hair dye to pregnancy risks. Absolutely keep it ventilated I had a few fans going since it was winter. I only did it once im waiting until closer to due date to do it again! Even with it being well ventilated the smell was horrible for me!
Its worse to go lighter, darkening isnt bad but dont try to bleach or lighten dramatically, that has worse chemicals. I dyed my hair lastnight, my doctor said i could. But , i would wait till your in second trimester just in case (:
Wait until your out of the first trimester!