Hi, I've made several batches of lye soap. Love it, but I leave the batches in the glass molds for, like, a week. They are really hard to get out of the molds. I've used lard, olive oil spray, but the soaps are often in the molds for the long haul. I really don't know what to put on the molds to help release the soap, when to release them from the molds, or anything. (No, my kids are still not allowed to call me a lard-ass.)