11. Granulomas
Occasionally little bumps called granulomas can form around tattoo ink. Although it’s not a common side effect, it seems to occur more frequently with eyeliner tattoos. Also, if you have a tendency to form keloid (raised) scars, tattooing may not be the best solution for you.

12. It’s for Men, Too
Burn victims, soldiers who have lost eyebrows in military accidents and those with alopecia can all benefit from micropigmentation.