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.
How much is it? On average, a henna tattoo can cost anywhere from $20 to as much as $200 or more for a complex design. Some artists will charge by the design while others will charge by the hour. A small tattoo should cost $10 to $20, while a medium-sized tattoo should cost $25 to $50.