This disorder is associated with several vascular, neurological, and skeletal problems including stroke, heart attack, clotting, mental retardation, eye abnormalities, and osteoporosis, amongst many other complications.
Tattoo tipping etiquette, in general, should hover around 15% for small tattoos and 20% for larger tattoos, but as with all tips, you as a customer ultimately determine the amount based on the quality of service and the work performed. Consider your involvement as well.
Offering a 10 to 15 percent tip is a nice gesture to your band or DJ, especially if they have to carry a lot of heavy equipment from one location to the next. For musicians, a $25 to $50 tip per band member is appropriate.