ROCHESTER, N.Y. (WROC) — New research from the FDA claims that as many as one-third of the tattoo inks tested had potentially dangerous bacteria.  Yanna Forest has been tattooing for over 11 years and has bought her ink from reputable wholesalers online. "I gain like a lot of trust with my clients, and I want them to know when they come here, they're going to get great ink, a great tattoo, and great customer service and you know in order for me to do that I need the ink to be on point," said Forest. She says she looks for the "lot" number and the date it was made. which is written on the bottle, this information traces back to the manufacturer.   News 8's Oran Spitzer paid her to fill in her tattoo and she made sure to wear proper protective gear like gloves and a face mask. She also showed the unopened needles she was going to use. Dr. Beth Lertzman is an attending dermatologist with Rochester Regional Health. She said, that while at the tattoo shop, you should make sure the place is clean, the artist is wearing protective gear, they clean the area with an antiseptic, and ask if they're using sterile water — and of course, see your doctor if you think something is still off after a few days. "If you do have a problem, either a skin reaction or an infection, you should see your dermatologist and it probably can be treated," said Dr. Lertzman. Yanna says good ink is good for business and she can focus on her art.