@alisha-- I know! Isn't it great? Have you also tried adding some epsom salt and a tiny bit of cayenne pepper? It works even better and makes you sweat even more this way!
@feruze-- I have heard that drinking ginger tea helps kill parasites in the stomach and intestines but I have not heard of anyone using it for lice yet. I think it's worth a try, it would be beneficial and yes it's all natural so it doesn't irritate skin.
What I do is chop up fresh ginger and put it in a net bag into the hot bath. Technically, the fresh spice, the powder and the oil will work equally well. So it's really your preference. Too much of the oil could be irritating for really sensitive skin. So it might be best to start out with fresh ginger.