Answered by Errol Norwitz, M.D., Ph.D. Dr. Norwitz is internationally recognized for his work in high-risk obstetrics. He is the Chair of Obstetrics & Gynecology at Tufts Medical Center, and a Professor at Tufts University School of Medicine in Boston. He is board certified in Obstetrics & Gynecology and Maternal-Fetal Medicine.
Many experts recommend not getting your hair colored during the first trimester of pregnancy. After that time, some women opt for highlights instead of having a full head of coloring; this way the dye does not penetrate the scalp. Some hair stylists use plant-based products that are less toxic. These products are also frequently used with cancer patients. Although there have been no tests to prove the danger of hair dye to the unborn child, it is better safe than sorry.
In terms of hair removal, it is probably a good idea to stay away from depilatory creams, bleaching, lasers, and electrolysis. Of course, shaving, tweezing, and waxing are perfectly fine and will not harm your body.