I went to visit the fellas down at the tat shop. I told them I had been using tattoo goo. They said that if you are out in the sun a lot like I am, it's best to use SPF 100 sunscreen. Protect your investment, because sun will fade a tat quick. I am going to have a retouch done on one mine, the rest are aging nicely.
The blues/purples fade faster than most other colors. This causes some people to stay away from those colors when they're making initial design decisions.
Oh yeah, you are absolutely correct. I am having all the black outlines redone on my chest, shoulder and back tat. SPF 100. I am going to keep some in the garage from now on.