A recent study showed how the stubble makes men look at least 10 years older than their age. This survey was undertaken with a panel of 300 people on board who were shown pictures of various celebrities who prefer changing their facial hair often and were asked to guess their age whether they were clean-shaven or with a stubble a moustache a beard or a heavy beard reported the Daily Star. It was found that heavy beards like the one recently worn by footballer Roy Keane aged men most markedly - adding up to ten years to his age adjudging