And what about how guns work? De Silva has kept a log of the most popular requests over the last 10 years showing which stars women most want to look like. Some men like that clean-shaven, baby-faced look and, to be honest, they really do it well. Up Next Close Jonathan Papelbon ducking his best chance at redemption. Penelope Cruz's lips are on De Silva's perfect face. People already overshare on social media, and there's a good chance your face is already in a searchable database, albeit one that's not public. John Legend's sweetly charming smile and five o'clock shadow make us swoon.
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The 17 Hottest Celebrities with the Best Facial Hair
Some of our content is about how stuff works. Previous video Next video. It's not like a credit card you can just change. And if we're using our biometric data as identification instead of passwords -- like the system Amazon recently patented -- our faces could serve as online authentication. Selena Gomez apparently has the perfect chin. Weekdays Where to watch. Lucky for you, HowStuffWorks is about more than providing great answers about how the world works.