I never thought of doing that.I'm not understanding why this wastes product. When I lather a puck in a mug. When I'm done shaving I squeeze the soap out of the brush back into the mug and I don't rinse the mug. The lather that doesn't get used in today's shave gets used the next shave and so on. Whereas if I load from the mug and then go to another bowl to lather, I usually do toss all the extra lather when I "do the dishes".
Huh.....
I learn something new every day!