Here is a question I have been getting in my inbox lately and below is the answer I gave! If anyone has anything I should add let me know!
"I did notice that you did not have vitamin E (one the lye calculator), although I would add after the saponfication I was wondering if it would change the calculation if I added it prior."
"Thanks for checking in! Saponification continues throughout the curing process of the soap and to wait until after saponification would be too late because the soap will have hardened by then. You can either add the Vitamin E at the same time as your other oils or after trace! Although it hasn't been proven scientifically, some people believe adding it after trace will leave some of the oil unsaponified to act as an extra moisturizer!"