Any opinions on a detox bath? detoxifying your body by laying in a tub with epson salt, ginger, baking soda, and essential oils?

Reasonable to try: There is not much research on this topic, but epsom salt baths are a proven way to get magnesium into our bodies, which most people need more of. Baking soda and essential oils are said to help our bodies to detoxify and I have many patients who tell me they do feel better if they do this when feeling toxic. There is certainly no harm in trying. At the very least soaking in a warm tub is relaxing!

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

Believe if you wish: Taking any bath can be relaxing and therapeutic. However, the skin is an effective barrier to any of the things you mention such that they do not enter your body (via the skin). The fumes may enter in a minor degree through inhalation into your lungs, but you don't need a bath for that. If you choose to believe in this practice it will have a benefit to your mindset. Would I ever do so myself=no.