Thank you all... Glory I use IGI 4627 for my containers and a blend of 4627 and 4625 for melts. I Talk I don't quite know what you mean using the salt and FO?? Do you sprinkle salt in the tart warmer then just put some FO in or..?? Lol sorry I'm a little lost... Do you all just pour SMALL containers first just to see how the wax and FO go hand and hand or ??