September 2014
How can i add tattoo without creation mod? How put i tattoos on already made sims? Can smb help?
September 2014
for sims in your library start a new game just bring them into the CAS add the tattoo then save again to your library
you'll need to use a cheat for sims already made in game
see this http://sims4.crinrict.com/en/2014/09/change-sims-n
i tried this myself and i was able to change/add/remove tattoo's
October 2014
Per http://sims4.crinrict.com/en/2014/09/change-sims-name-and-traits/
"This cheat is currently bugged and sets the relationship for children to be their parents siblings. This can’t be changed back so do not use on families."
I have not found confirmation of a fix yet.