For thousands of years the Kabbalists use a hand washing cup to purify the energy in the hands. As the hands are the vehicle through which we manifest many of our actions, we want to cleanse any negativity that may latch there.
It’s recommended to wash hands in the morning, before meals, and after the bathroom.
The blessing for washing the hands can be found in the Dialing God book.
Wash Cup Hammered Stainless Steel With Gold Handles - 5" X 4.5"