Graphic photo: Unsterilised needle used by tattoo artist on a lady affects her skin

According to  twitter user, @Nanojefe, his/her sister went to get a tattoo done sometime ago and the tattoo artist didn't clean/sterilize the needle before using it on her. Now unfortunately, the bacteria in the unsterilized needle is now 'eating' up her skin. Must be a nightmare! See the graphic photo after the cut.