Are the tattoos that Sam and Dean have (the anti-possession charm) actually real? Or are they fake tattoos that they put on just for the show then rub them out?
Jared and Jensen have both said that the tattos are fake and can be removed. They have however both seen a good deal of the fan`s tattos that people like to show them. Sometimes to jensen`s embarrasment.
Of course they're not real - They only apply to Supernatural. When the series ends (as sadly one day it must) the actors will move to other things and will not want markings from previous project on them. Plus Jensen has stated in interviews more than once that he does not like piercings and tattoos - so it's unlikely he'd have one for real.
Its probably just one of those air brushed tattoos that stays on the skin for like a week or so and then starts fading. They probably keep touching it up every week or whenever they need to show it on a scene.
they are fake because when actors have tats in movies they don't really have those tats in real life. so when they go to the makeup trailer they have the artists put the tats in black makeup just like they were cuts or bruises they (use the same kind of makeup.)
Jared and jensen both have tattoos, including ones on their wrists that match Jeffery dean Morgan's tattoo from his wedding. As for the anti possession tattoos, not completely sure. It is possible they were air brushed in the beginning of the series and they may be real now, or they may even have them in other places. But I havent seen may pictures that state clearly as to for sure if they have them or not for real. But despite what one users answers here are about dean not having tattoos cuz he doesnt like tats and piercings, that is not true. He has many tattoos. An arrow on his arm and others, one even for his twins. :)