how does make up stay on faces?

Question: how does make up stay on faces?
- Keywords:
  cosmetics,
  face,
  make-up
Asked by miaatkinson2k12 to Martin on 15 Mar 2012.
- Martin Zaltz Austwick answered on 15 Mar 2012:
  
  I think it sticks, basically. Faces are quite sticky, so is make-up, together they work well together! The reason they’re sticky is weak forces between charges in the molecules in the make-up and the molecules in your skin.

Question: how does make up stay on faces?