Also in the December issue of Psychology Today, Mina Shaghaghi reports on the findings of a series of studies by Richard Russell of Gettysburg College which explains the “allure of dramatic eye makeup and va-va-voom red lips on women has biological roots.”

It seems that what glamor girls do (whether they know it or not) is increase the contrast of the eyes and lips against the rest of the face — and such contrasts communicate femininity and attractiveness.

These studies indicate that it’s not so much the colors of your cosmetics, but that they darken the eyes and lips, making the rest of your complexion pale even more by comparison.

For more on this, visit Richard Russell’s Research page (scroll to the bottom for the Artificial Enhancement of Facial Signals studies).