Are cannabis oil bath salts OK to make?

Dear Dr. Roach: My husband loves a long soak in the bathtub, so I have made him many containers of bath salts (plain Epsom salts mixed with essential oils). I use about 2 cups of the salts with a full small bottle of essential oils, packed into a glass jar with a scallop shell for the scoop. The house smells heavenly when he is taking a bath. Since I have been receiving emails lately offering cannabis oil, I wondered if marijuana bath salts would be OK to make. I am wondering about the effect of cannabis oil being absorbed by the skin in a long, soaking bath. Would he end up "high"? Just wondering. — Anon. Answer: Cannabis oil is made from strains of Cannabis sativa, which has variable levels of THC (the substance that causes euphoria, or "high") and cannabidiol (CBD), which does not and which may have some medicinal uses. The essential oils I have seen for use in massage and baths generally are reported by their manufacturers to not contain significant amounts of either THC or CBD. Cannabis oils with high THC generally are not legal in the United States, although high-CBD, low-THC oils have some medicinal uses. Thus, it's unlikely he would experience any euphoric effect from these oils used in bath salts.