Cosmetic tattoos, like traditional tattoos, add color into the skin. “It does use an iron-oxide pigment put into the skin, but that’s where the similarity ends and begins. By that, I mean it’s permanent in that there will probably always be some ink present, but the likelihood of it lasting a lifetime is pretty low. The colors fade over time, and people need to have them refreshed over the years”, says Maria Wu, micropigmentation specialist at Pink Permanent Ink Clinic. Because permanent makeup is permanent, it’s important to do your research and make sure it’s a commitment you really want to make. So before you get inked, here are 15 things you need to know about cosmetic tattoos.