"You can really see the square jaw line on Gerard Butler’s face with this beard style," says Jeff Master Barber at Truman's Gentlemen's Groomers. The natural neck line balances the beard, keeping it from looking too primped. "The trimmed cheek hairs gives the beard and face angles and shape," he says.
The trick with this look is to follow the bottom of the cheek bone, mowing off anything above and keeping what's below. Giving yourself a once-a-week trim is a general guideline but changes depending on rate of growth. "The real question here is if you have full enough facial hair to give yourself a strong cheek line," says Yabut who notes that a cheek border may look strange on guys with extra light growth or patchy beards. And even though the neck looks natural, as a rule, anything below the adam's apple should always be trimmed.