Chemical hazards

Tattoos have a rich history as an expressive form of body modification and cultural symbolism, with 

6PPD (N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine) is a chemical widely used as anantidegradant in vehicle tires. 6PPD reacts with ozone in the air and produces 6PPD-Quinone(6PPDQ), a chemical that has been classified by the U.S. Environmental Protection Agency asvery highly toxic to aquatic organisms along with adverse implications to terrestrial ecosystems