Pregnant women are better off not using cool oil because it contains menthol, camphor and other ingredients, generally used in mosquito bites, itchy skin and other situations, but the ingredients contained in cool oil may have a negative impact on the growth and development of the fetus. Especially in early pregnancy, this is an important period for the development of the baby’s organs, the ingredients in cool oil will be absorbed through the skin of pregnant women, which will have a negative impact on the fetus through the placenta, and may even cause fetal malformation in serious cases. Therefore, it is advisable not to apply cool oil during pregnancy, if necessary, occasionally use a small amount of cool oil, do not be overly nervous, we do a good job of pregnancy checkups, if there is discomfort, promptly go to the hospital.