No, VK being a cosmic energy TOOL doesn’t require any cleaning or purification process.
In normal situations like charging EC, water, direct request, written request, etc, you don’t need to wash your hands before or after using VK as VK is the energy sender and not you.
We suggest you wash your hands and VK for hygiene purposes. There are some issues that may be contagious, like eczema, tuberculosis, virus, etc which can be spread through coming into physical contact with an affected person. In such a case, follow the normal hygiene protocol.
If you gave your VK to the affected person then also follow the same hygiene protocol.
It is known that crystals and gemstone need cleaning after sending the energy because they absorb the negative energies of the affected person. Unlike, crystals and gemstones which need cleaning, VK does not need such cleaning because it does not absorb negative energies.