Removed tattoos reappear under certain circumstances

I also experienced a similar problem. For me, it was like: if I unselect one tattoo, the green outline surrounding the thumbnail disapears BUT the tattoo on my sim doesn't, I can only use another tattoo so that the previous one can go away.

Hi DrawinDragin 

for completions sake could you please add tags for mod usage (if you use any or not) and your platform. Thank you.

Please always provide this information so not to delay a bug report getting to Maxis. You can find more info about the adding thread tags to your post here: General Information About The Bug Reports Forum | EA Forums - 4965007 

I also had this issue after removing my mods and clearing the ole cache to test some other bugs.  It happened with a sim I had made before release to be a tattoo artist. Loaded her up, decided to replace all her tattoos with custom ones, only for them to pop back up when I switched the outfit. Removing all tattoos also worked for me in the end, just slightly annoying to have to do.

I did a little experimenting and I found out you can delete individual tattoos, it's just a little complicated. If you have had a tattoo on your Sim while you've been looking at multiple outfits, to delete it you can go to each outfit you've had open and delete the tattoo in each. If you can remember which outfits you've had open, but if you can't just go through all the outfits and delete the tattoo in each, if they have it. If you switch to any outfit without deleting the tattoo from the previous outfit, the tattoo will propagate to the new outfit. Sorry if that sounds a little like I'm repeating myself a little, I just thought I'd try to be as explicit as possible. Again, deleting all tattoos does definitely work if you're okay with starting from scratch.
It seems to me like (and I'm not necessarily knowledgeable here), with the new tattoo system, that when you switch to an outfit, new tattoos are copied to the outfit but the absence of a tattoo isn't, and that's I think what's changed with the new system. Hopefully either the workaround or the more detailed description is helpful.

Hello all,

If any of you are still encountering this on the latest game version (without mods), would you be willing to share your save file(s)?

If so, please send me a private message with a link to the file. Instructions can be found here: http://x.ea.com/74420

Thanks!

I also experienced this, I got a sim off the gallery and removed his tattoos. Added a new one I liked. All the old ones reappeared after I switched outfits. 
I use only MCCC and literally 2 CC eyelashes for female sims.