Kelly, Kelly, Kelly, :whistle: I will have to experiment a little more, my old recipe seemed to float more than sink, but my new recipe just sinks. I will have to pull the old one out and do a comparison. But, also the ones I make now are really compressed and get rock hard. But, keep in mind, mine still don't necessarily resemble much of a bath bomb, since I am a newbie to them and have only tried to make them 4 or 5 times