I typically soap most recipes at room temperature, which is ~78-80F for me. It's way easier that way, I mix up my lye solution and set it aside in a safe and secure place to cool while I melt my hard oils. Once they're melted and mixed with the soft oils, I wander off to do something else until both containers are at room temp.
I doesn't work on all recipes, though. Right off the top of my head, the batch I made that was mostly lard and shea butter needed to be warmer to keep it liquid.
I doesn't work on all recipes, though. Right off the top of my head, the batch I made that was mostly lard and shea butter needed to be warmer to keep it liquid.