I have suggested to my boys that they "take a girl swimming" before becoming infatuated.
The eyes of many girls will disappear and a blotchy complexion may appear without makeup.
Eva and Katherine being exceptions in these photos...their eyes are still prominent.

I have noticed that, in person, celebrities have gorgeous skin. For example I ran into Rob Lowe once and his skin was lovelier than normal people's skin. (And he was out drinking).