Explaining and Preventing Soda Ash | BrambleBerry
Finally, cover the soap with a piece of cardboard and a then towel or blanket. That keeps the soap warm and forces gel phase. If your house is cold, you may also want to place the mold on a heating pad set to medium for 30-60 minutes. Then, turn the heating pad off and leave the soap on it for 24 hours. Learn more about how to insulate soap here.