Are in-home tattoos safe?

I keep seeing what look to be great artists with wonderful portfolios advertising that they do tattoos in your own home. How can that be in any way sterile or safe? Is this some common practice that I just hadn't heard about until now, or what? Personally I'd go to a pro at a sterile shop, not have a pro... show more I keep seeing what look to be great artists with wonderful portfolios advertising that they do tattoos in your own home. How can that be in any way sterile or safe? Is this some common practice that I just hadn't heard about until now, or what?

Personally I'd go to a pro at a sterile shop, not have a pro work in my own home...what do you guys think?
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