Dying hair during pregnancy may be harmful for the expectant lady as well as the child growing in her womb therefore most dermatologists and physicians to avoid any chemical process including hair coloring during the first trimester of pregnancy for both safety reasons and your possible sensitivity towards the chemicals included in color product.
Once the first trimester is over, you can treat your hair in an airy space to reduce your exposure to the chemicals, however.
The Organization of Teratology Information Services (OTIS) states that amount of exposure, timing in the pregnancy and the frequency of undergoing the treatment are three important factors when it comes to consider hair coloring treatment during pregnancy.
Though the collected information and research conducted in this regard is limited but they state that hair coloring treatment during pregnancy is unlikely to be of concern.
Permanent Hair Dye and Allergy
Development of allergic reactions is another problem associated with the use of permanent hair colors. Anyone can develop allergic reactions- even to the colors that have been using for a long time. Therefore, it is wise to take an allergy patch test 2 days before each coloring treatment.
A few permanent hair dye preparations or packages, mainly those that contain parapheneylenediamine (PPD) bear a warning on the covering to the effect that a patch-test should be done before using the color. PPD is the element that is liable for most dye-related allergic reactions.
If you dye your hair at home than take patch test by applying a little color on your skin 2 days before application and observe if you have any reaction. If you feel that your skin is irritated after hair dye exposure, then cease the treatment and visit a physician to discover if your skin has developed allergy or it is sensitivity.
Other sign of allergic reactions include itchy skin rashes, swelling of the eyelids, reddish eyes, sneezing, a blocked nose, runny nose and swelling of the lips and mouth.