I'm speaking in the aggregate; you are speaking in the specific.
Using generalities to paper over differences is poor reasoning.
You haven't given any proof behind cultural ties. If anything, makeup is cross cultural. Makeup is universally used to create the allusion of youth and thus fertility. I doubt you can find many examples (even neck stretching is out), that goes against attractive enhancement .
What would constitute proof on this topic, to you? I'm looking for the best explanation. You have already acknowledged that some make-up is not used to create the illusion of youth, so it is clearly not universally used for this reason. When I was in high school, girls used make-up to look older. I already gave the example of the bindi; how many examples is "many"?
The best indicator of fertility is recent childbirth. If make-up were really about indicating fertility, we would be seeing women with binkie hanging from their ears and carrying diaper bags to nightclubs, even if they did not have a kid.
Changing culture won't change attraction, and makeup choice will follow as necessary.
Less than 500 years ago, in Anglo culture, the ideal woman shape was plump and the ideal skin tone was ivory/alabaster. Today, it is thin with tanned skin. There have been other variances over time. You think that's all biological and not cultural?
Cultural norms definitely drive attractiveness; there are only a couple that are universal (such as symmetry). Make-up choice follows these cultural norms.