Tattoos will fade overtime no matter what, but the sun's ultraviolet rays will cause them to fade quicker. Other factors that can contribute tattoo fading are swimming pool chlorine, wind and indoor heating.
To prevent tattoos from dulling, it is necessary to wear sunblock on tattooed areas of the skin. It is also recommended to use a moisturizer every day, especially right after a shower, to prevent the skin from drying out. Wearing proper clothing that covers the tattoos is an important way to protect tattoos and keep them from fading; darker and tightly woven fabrics are ideal and offer the most protection.