There is no such thing as a "Professional" Tattooist that works out of his/her home.

A tattooist or piercer claiming to be "Licensed" should be questioned, as there is currently no licensing process for these professions in the state of Arizona. Remember, it is your body, do not supply it to just anyone claiming to be a tattooist or piercer. Do your research. Trust your instinct. Peace of mind is the most important thing to consider. If something seems odd, ask your tattooist or piercer to explain it. If you are not completely satisfied with your tattooist, piercer or the environment, do not get worked on there. Your artist should be sober, clean, calm, well informed and have the highest standard of personal hygiene. Tattooist and piercers should be ethical and concerned for the welfare of their client. A competent tattooist or piercer must be capable of performing the procedure without the assistance of anyone. Finally, your artist should give you detailed aftercare instructions on how to care for your specific tattoo or piercing.