Hi, all. I've been seeing bath salts that include wet items (like shea butter, for example). I'm not really understanding how that would be incorporated into a loose bath salt formula. I'm picturing clumping. Do you melt the shea? I've heard people use the term "grate" with shea, but the shea butter I get is really soft. I can't imagine grating it. What about other oils or fragrance? Any thoughts? Thanks!