Well, it exists everywhere, but so does sexism.

So... it doesn't have anything to do with our culture at all, then?

Human culture, I guess if you step back far enough. I say culture because I don't think makeup is tied to genetics.

What evidence do you have that makeup is actually linked to sexism at all?

That women wear it daily while it doesn't even cross most guy's minds. Also that women wear it, and are expected to wear it, to look better while, again, the concept rarely crosses most men's minds.

If it doesn't cross guys' minds but it does cross their minds, isn't it a reasonable explanation that they personally notice the effects and like how it looks on them?