Why is there a steel ball in a shaker bottle?
Protein powder is a substance that is more difficult to dissolve in water, whether it is in cold or hot water. The metal ball in the shaker bottle can fully dissolve the protein powder.

- Apr 02, 2019-
Protein powder is a substance that is more difficult to dissolve in water, whether it is in cold or hot water. The metal ball in the shaker bottle can fully dissolve the protein powder.