I'm not sure I'm following the OP's question but I build lather in a bowl which loads the brush. After each pass, I tend to spend a few seconds re-whipping the lather in the bowl which freshens the brush again. Even using the least bit of product I always end up with way more lather than I needed. And like others, I will often squeeze out my brush on that last pass to get to the primo lather left in the brush.