Do Women's Faces Change Color Over the Menstrual Cycle?, by Dr. Robert Burriss

It’s not difficult to tell when a female chimpanzee is in heat. As she nears ovulation — the point in her cycle when she’s most fertile — her bottom swells up like a balloon and turns bright pink…

Composite images made from participants in the two studies

Female Blushing: An Indicator of Fertility?

Do Women's Faces Change Color Over the Menstrual Cycle?, by Dr. Robert Burriss

Pretty and Paid. How facial appearance influences…, by Dr. Robert Burriss

Robert P. Burriss's research works University of Basel, Basel (UNIBAS) and other places

Women's faces get redder at ovulation, but human eyes can't pick up on it

PDF) Men's, but not Women's, Sociosexual Orientation Predicts Couples' Perceptions of Sexually Dimorphic Cues in Own-Sex Faces

Do Women's Faces Change Color Over the Menstrual Cycle?, by Dr. Robert Burriss

Dr. Robert N. Frank, MD, Detroit, MI, Ophthalmologist

PDF) The myth of hidden ovulation: Shape and texture changes in the face during the menstrual cycle