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Tattoos: Understand risks and precautions

How tattoos are done

A tattoo is a permanent mark or design made on your skin with pigments inserted through pricks into the skin's top layer. Typically, the tattoo artist uses a hand-held machine that acts much like a sewing machine, with one or more needles piercing the skin repeatedly. With every puncture, the needles insert tiny ink droplets.

The process — which is done without anesthetics — causes a small amount of bleeding and slight to potentially significant pain.