Elena Anaya had the mask glued to her face during the entire day. That meant that she couldn't eat or drink anything until they wrapped for the day. She said that the process of putting it on and taking it off was painful, but it was worth it.
Voldemort - Ralph Fiennes
For an entire generation of people, Voldemort is the evilest villain in existence. Ralph Fiennes transformed into the character just like everyone else, minus the CGI makeup for the removal f his nose. What good would it do if He Who Must Not Be Named had a nose? That was the only CGI part of his transformation, everything else was real makeup.