Manganiello hasn't really detailed what exactly prompted the move on social media.
When Jason Momoa shaved off his beard, in contrast, he shared a video of the process and explained his reasoning: Environmentalism...and to really drive home the point of his "use aluminium cans instead of water bottles" PSA. (Momoa has a product line of aluminium water cans, Mananalu, so the video doubled as a commercial for it.)
"Goodbye DROGO, AQUAMAN, DECLAN, BABA ...I’m SHAVING this beast off, It’s time to make a change," he wrote. "A change for the better...for my kids, your kids, the world. Let’s make a positive change for the health of our planet. 🌎 Let’s clean up our oceans 🌊 our land ⛰. Join me on this journey. Let’s make the switch to infinitely recyclable aluminum. ♻️♻️♻️ Water in cans, not plastic."
The beard has since returned though, so there's hope Manganiello's change could also be temporary for you beard and moustache fans.
This article originally appeared on Men's Health US.