As long as its well vents and you don't breath in a lot of the chemical smell your fine but you risk it not turning out right because of the change and spike in your hormones.
There is nothing saying its bad but nothing saying its OK either I personly am waiting till I have mine little one
I think i would wait a lil, let the pregnancy hormones make your hair nice and beutiful. I waited , im 38 weeks tomorow and i was going to do it at 6 weeks, it was worth the wait because it was nice and long and full
Yes , any dye is fine as lont as your in a vented area
I'm 6 weeks I'm gonna dye my hair with a black dye x