Hello evryone I'm doing quite a lot of tests to find a good formula with a good lather without too much foreign oils and as you can imagine it's not easy. So to save some time I use a lot of CPOP. Basically I pour my soap into mold, cover them and put them into a 50°C oven for 24h then unmold them and let them dry at 50°C another 24h. After that I generally have a good bar of soap that is usable right away. I also tested to let my soap cure for long period of time and it get whiter and harder. However it did not have any notable effect on lather. From what I know of soap chemistry, there is no reason that a CPOP soap will be very different from a CP soap in terms of lather. But maybe I'm wrong ? Hence my question. Have a nice day !