20/21 weeks pregnant can i use a lush bath bomb with these essential oils as ingredients: grapefruit oil, cedar wood oil, and peppermint oil. no concentrations are given. they are not the first ingredients listed.

Yes: Based on the information provided, fetal harm is unlikely, as long as the temperature is not too hot. There is a small risk of fainting from the vasodilatory effect of a hot bath which could cause drowning. Also, some people could be allergic to some of the ingredients themselves. Dipping your toes in the bath for a few minutes to ensure no allergic reaction may help eliminate this concern.

Why would you ?: By definition, "alternative" is different than modern western medicine. Generally any drug, herb, treatment, or oil that stands up to rigorous scientific scrutiny is included in modern medicine. Many alternative practices, oils etc do not stand up to scientific scrutiny and cannot be shown to work.nor safe. Some could do serious harm. Check https://nccih.nih.gov/ for research