How do I respectfully ask a tattoo artist if they’re using safe inks?

I really want a tattoo, realistically I want to be covered head to toe in them, but sadly battling with health anxiety has made that very difficult due to all the old wives tales you hear about tattoos affecting long term health. But after a number of years of therapy I’m slowly getting better and I believe I may soon be at a point where I feel comfortable getting my first tattoo. However, I want to know how to respectfully ask my local tattoo artist if he uses safe inks, there have been a number of cases near me where people have had health complications due to being tattooed with inks that did not meet EU regulations and were imported from China for very cheap prices. But at the same time I don’t want to disrespect the artist either and suggest that he uses those same cheap inks. Any advice on how to approach that sort of conversation would be greatly appreciated, thanks.