How was a shaving mug used?

Answer 1

You'd put a bar of shaving soap in the bottom of the mug, add a touch of water, and you would whip it into a lather with your shaving brush...once a nice lather was achieved...you'd apply it to the bits you wanted to shave with your brush.

Answer 2

it held a soap and water solution that was lathered on the face using a brush