Welcome to another edition of men's Grooming Gods; a weekly recap of grooming highs and lows courtesy of our favorite stylish gentleman across the globe. The lesson this week? Let loose.

John Mayer's Autumn SunriseInstagram content

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The idea of highlighted hair might call to mind the bad "frosted tips" look of the '90s and '00s, but John Mayer's newly lightened hair proves that there's a more palatable way to pull it off.

Brad Pitt's Studio Scruff

Brad Pitt, style legend, is making a case for giving up booze, taking up art, and getting the best messy-cool haircut of your life—then letting it be the most important part of your look.

Brooklyn Beckham's '90s Flop

This kid is a trend machine, and he's not limiting himself to this decade either. Beckham's hair has been looking increasingly Hugh Grant-tastic over the last couple of weeks.

Jared Leto's Folk Singer FlowInstagram content

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We're not sure where Jared Leto is going with his grooming situation but we do know that he's sort of morphed into a '70s folk singer over the course of his summer tour.

Lil Yachty's Double BraidsInstagram content

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Lil Yachty took a break from his signature box braids, rocking double mohawk braids instead. Looks like he might be letting his red color run a bit wild too. We dig it.

Shia LaBeouf and Sverrir Gudnason's '70s Hair

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There's no telling whether Borg Vs. McEnroe will be a classic but we know the DGAF hair inspiration, not to mention style moves, will be off-the-charts good.

A-Rod's Highly Hydrated Skin

Jennifer Lopez and Alex Rodriguez step out hand in hand in New York City.<P>Pictured: Jennifer Lopez, Alex Rodriguez<B>Ref: SPL1531060 300617 </B><BR/>Picture by: XactpiX/Splash News<BR/></P><P><B>Splash News and Pictures</B><BR/>Los Angeles:310-821-2666<BR/>New York:212-619-2666<BR/>London:870-934-2666<BR/>photodesk@splashnews.com<BR/></P>XactpiX/Splash News

When you don't have the personality or follicular strength to rock crazy hair, rich-guy skin is the next best thing. We don't know what A-Rod is using (maybe it belongs to J-Lo?) but the man is straight luminous.

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