human
I'm thinking of getting a tattoo. What are some things I should know about tattoos?
assistant
1.  Tattoos can be permanent, so make sure you're comfortable with the design and the placement before committing to it.
2.  Tattoo ink is made up of pigments and dyes that may contain chemicals like mercury, lead, nickel, and other potentially harmful substances.
3.  The health risks associated with tattoos include skin infections, allergic reactions, scarring, and even cancer.