My ? Is that if hair dye touches ur skin while ur pregnant can it cause contractions. My boyfriends sister let her kids get into her hair dye and they put in on are clean clothes. We thought it was only on a pair of my boyfriends shorts. Turns out they were on the pants i put on to last night. I woke this morning and noticed something brown on my leg and it took a few wipys to get it off then i noticed it on my pants.