After your first trimester
When you are about 13 weeks you can!
im 18 weeks now u was super scared :) thanks ladies ...
Im a cosmetologist amd you can color your hair anytime you want. But when we do have a pregnant client we do inform them if they get any chemicals like
color - the color might come out a darker shade or a lighter shade then ehat you wished for
highlights- you might not get the color you desired on your highlights
Perm- your curls might not stay
So we always tell our clients the possibilities of how your hair will react but we can do a patch test also to see if your allergic before applying on your full head. But ive color my hair back to my natural color amd it came out a little darker than my natural color but its due to my hormones but isnt much of a difference.
hope my information helps:)