What’s CPOP? It is cold process soap that is finished off in the oven on low heat. In the case above, I made 3 small batches of goat’s milk soap as usual, but preheated the oven to 170 degrees (F) before mixing the oils and lye. Once trace was reached and fragrance was added and poured into the molds, I placed the soap molds into the oven, turned off the heat and left it for 8 hours. I then waited till the next day to unmold them. I love how they turned out!!