I just started making bath bombs. My first recipe came out great, but I tried adding shea butter to the next batch and it didn’t go so well. It comes out of the mold fine and it fizzes well, but there are foamy clumps in the bath water that don’t disperse. Why is it doing that and how do I stop it from happening? It creates a ring around the tub. I did include Polysorbate 80 on the second attempt with the shea butter recipe, but it didn’t seem to do much.