Does anyone know what the code is for facial recognicition if there is any? If so, can you explain the code needed to get it to control servos?
Given that you haven't said what 'the code' needs to do, it's impossible to explain how it would do it.
Perhaps you're thinking of a face-tracking web cam? They're commercially available and I don't see anything stopping you from creating your own using a PC application based on OpenCV, with an Arduino used to drive the servos. But I'm only guessing what you're after, since you haven't said.