That might work, Doriette, since the pearly LS on Facebook was supposedly made from 100% tallow, so it doesn't have the extra stearic as per IL's method. If you add stearic with the fats, it will saponify to stearic soap (potassium stearate to be geeky about it), but IL's stearic is staying as stearic acid, since all the KOH is used up by the time she adds the stearic. So it's possible you may have to play around with the % of stearic added up front to get the same pearly effect. Not sure, since I haven't tried it myself -- just thinking out loud -- so take this with a large grain of salt.