Trent Faulkner

Hello. I have had about 3 sessions so far on my half sleeve and I got some blue shading done during my last session which was about 5 months ago. I've started to notice about 1-2 months ago that the ink is changing colour!!! If anyone has any idea what's going on with it, that would be appreciated. I have attached some pictures of it when it was fresh and how it looks now.