The 43-year-old actor chopped off his signature long locks over the weekend in favor of a dramatic new buzz cut, sharing the moment on Instagram.
Oh, man," he winces in the video, running his fingers along the side of his freshly-shaved head.
Shaving off the hair," he declares. "Doing it for single-use plastics. I'm tired of these plastic bottles, we gotta stop.
Momoa urges fans to ditch plastic water bottles in favor of canteens or aluminum alternatives.
The star has yet to share a photo of his completed haircut, but did give fans quite the tease with a glimpse at the process in his video post.
Momoa recently showed off his lush locks, which had grown down past his shoulders, at the season three premiere of his Apple TV+ series, See.
Speaking with ET at the Hollywood event, the star gushed over the opportunity to play a dad in a series for the first time.
I mean, obviously I'm a father, and family man," Momoa who shares 15-year-old Lola and 13-year-old Nakoa-Wolf with ex, Lisa Bonet began.