Unfortunately the girl does need make up, at least in the video clips. She's looking un-naturally shiny on the forehead.
Video especially does need good make up, even if the end result is that the subject appears make up free and completely natural.
Yes, in the end those are little things that can change a lot. Indeed video is less forgiving in that aspect, you can see that the stills are free of the skin "video issue".
I'm not sure but looking at the girl (actually a very appropriate model for the product) it seems that she has a rather oily skin, wich can be her natural constitution but it does not match with her physiology (she is probably more "pita" (see ayurveda) wich is in the middle.
The make-up is super key. I saw many times live tv and they use it all the time included outside on location because if not the result is always problematic.
In fact, video brings chalenges where stills don't and vice-versa.
If you want to keep your work philosophy (no crew, natural light etc...), just have with you a basic make-up kit. The advantage (a part from the render) is that at least you have a reason to touch the sexy model. (except for Chris, when the model is MR...just teasing, just teasing)