http://www.dailymail.co.uk/health/article-3093534/Blushing-ladies-Don-t-fret-s-just-sign-fertility-Sex-hormones-make-women-s-faces-redder.html


Blushing, ladies? Don’t fret, it’s just a sign of fertility!
www.dailymail.co.uk
Female’s facial skin is redder when the sex-hormone oestradiol, which promotes fertility, is at its highest level in the body. A side-effect of its presence is causing the skin’s blood vessels to dilate.