if you're doing colorants could you just put them in with the hard oils?
I watched Soaping 101 regarding whipped soap after I watched Galaxy's video. The 101 lady just added her powdered colorants to the whipped soap batter and whipped it in. I was really surprised. But, as I watched, I surmised that you really can't over-whip the batter. You would just be putting more air into it and making a bigger batch out of your oils. Well, that's my theory and I'm sticking to it. (Until the chemists tell me I'm wrong. )