Without seeing the footage, it's hard to know what would work best for you, but it sounds like combining motion tracking with the Clone Stamp tool would be a good start.
See this video for the basics of this technique:
1 person found this helpful
I don't think you will want to use the clone stamp or any tracking at all. If it's just some gap in the make-up, there's no need to do anything but slap a solid on top, mask it and then experiment with blending modes and color. Eventually you will come up with some combination that matches the rest and retains the structure of the skin. Cloning will only make things look like failed plastic surgery...
Thanks Mylenium for the answer, how will I have it follow the face as it moves though, if I don't do tracking? Maybe I wan't clear, but the actors face is moving in the scene.
That video looks pretty good for my purposes. I think I should be able to either use the clone stamp tool or like Mylenium says, put a solid on it and mask and blend it.