Nail polish -> healthy nails -> healthy body -> lots of resources & good genetics.
Lipstick -> red lips -> sexual symbol (looks similar to vaginal labia) -> more reproductive choice
Lipstick -> red lips -> sexual symbol (looks similar to vaginal labia) -> more reproductive choice
But those are messages for the men, not for the woman who applies the lipstick. So is the desire basically to be sexually attractive like a woman? Or falling in love with one's reflection in the mirror?