The cold zone is defined as an area that holds your sterile materials.
This area is not to be touched during the tattoo process
at all. For our purposes, the tattoo process begins once the skin
of the client has been broken.
The warm zone is an area that can be touched during the tattoo
process, but only with clean gloves. Clean gloves are gloves
that are on the tattoo artist and have not touched anything in the
hot zone.
The hot zone is the area and equipment that have touched
bodily fluids, or contain other materials that are deemed as
single use and have been set aside for this single application.

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