Yellow and red are the hardest colors to maintain over time, blue and black are the easiest and most stable to maintain. Research has shown that nearly 1 in 4 people have at least one tattoo on their body. The overall length of time that a tattoo styles healthy and vibrant in color all depends on how well it was taking care of after it was completed and how the skin is taking care of. The pigment that makes up the tattoo must remain the way it is over time, although tanning and wrinkles can a...