I've recently began making bath and body items as a hobby, and after googling my heart out I can't seem to find an answer to this question. I attempted to make bath melts using a recipe that called for cocoa and shea butter plus a few herbs, but used only the butters and some fragrance oil. They turned out okay, but upon use in the bath, all of the oil simply floated on top of the water. I figured I needed to use some kind of surfactant (I have polysorbate 80 and SLSa on hand) to disperse the oils, but I'm not sure how/when to add it or if it will even work. Both P-80 and SLSa are water soluble...if I were to use one of these would I need to add water to the melts, and if so how much? I could also add beeswax to firm it up if water was needed.