I think a big reason for such reaction is that woman who regularly, or near always wear makeup, suddenly look different if they stop doing so. Giving the impression they look more tired/paler/sickly then usual.

They would get this less if people are inversly used to them just being natural. And rather be suprised when do decide to do make up and give a complilent for it.

Use makeup sparingly, it is not necessary and the effects of it are greater when you don’t look like that everyday. Natural is beauty in itself too.