I wouldn't be surprised to learn that in general French women (and most European women, in general) are less into makeup, on account of their being more habitually and casually active than most American women.
For example, walking and bicycling for transportation. In warm weather, you sweat your makeup off, and in cold weather your eyes water and your nose runs, so you would end up dabbing all of your makeup off with a handkerchief in the attempt to stem the flow.
I'm an American woman who commutes by bicycle and find makeup to be incompatible with my lifestyle. The sweat, the cold-weather issues, the time-consuming nature of making up after you get to the office. It is NOT worth it to me. Especially when makeup only goes as far as enhancing your existing looks, and my looks aren't particularly good to start with! I generally ride in normal clothes...even skirts or dresses. I figure the French ladies do it, as well as Italian, Dutch, Chinese, etc. A little planning and the right bike, and it's no big deal. But makeup is more fussy than just putting on your clothes.
I certainly have no patience with trying to lay the slap on in the ladies' toilets with their craptacular lighting and people barging in and out the whole time. The payoff is too small for all of the work, and then at the end of the day, I'd only be riding home and mucking it all up again.