JASON Momoa has shown off a major change to his look.

He showed off the drastic transformation in an unexpected video, leaving his fans shocked.

Jason Momoa has shaved off his long hair – Credit: Instagram/ Jason Momoa

The actor was known for his signature locks – Credit: Getty

Posting to Instagram on Monday from his home state of Hawaii, Jason, 42, revealed that he has shaved off his signature long hair.

In the clip, he explained his decision while an unknown woman took the clippers to his famous mane.

“I’m doing it for single-use plastics,” explained the Aquaman star, who in June became the UN Environment Programme’s Advocate for Life Below Water.

He held up two braids of hair to show his fans what had already been removed.

“Oooh – I’ve never even felt the wind there,” he laughed as he touched his freshly shaved sides.

He continued: “I’m tired of these plastic bottles, we’ve got to stop. Plastic forks, all that s**t, just goes into our land, goes into our ocean.”

He begged his fans: “Anything you can do to eliminate single-use plastics in your life, help me.”

This major change in Jason’s appearance comes just eight months after it was revealed that he had split from his wife Lisa Bonet.

’LOSING THEIR S**T’

The actor is currently dating Eiza Gonzalez, who perhaps will enjoy her boyfriend’s new look.

“Here’s to new beginnings,” he shared in the caption.

But many of Jason’s admirers online were quick to express their disappointment about the change in style.

“We did not approve this did we?” asked one heartbroken fan.

Another wrote: “I never thought I’d see the day. Somehow he’s still smoking hot – the man’s got a gift.”

“Can’t imagine how many women are losing their s**t right now,” posted a third.

CHANGE FOR GOOD

Fans previously freaked out when he shaved off the recognizable beard which he grew for his Game of Thrones character, Khal Drogo.

That move was also to raise awareness for environmental causes.

Jason, who told The Daily Telegraph in 2018 that his wife would “leave” if he shaved his hair, is currently focussing on his water bottle company.

Mananalu Pure Water sells purified drinking water in reusable aluminum bottles.

UP IN THE HAIR

But it’s unclear what the future looks like for his hair accessories like his very-own branded pink scrunchie, which won fans over when he wore it to red carpet events like the Oscars.

It’s also likely that Jason will also no longer rock an ombre dye.

Jason and Lisa Bonet announced earlier this year that they are headed for a divorce – Credit: Getty

In June, he was appointed as the UN Environment Programme’s Advocate for Life Below Water – Credit: Getty

Many of the actor’s fans are devastated to say goodbye to his shoulder-length look – Credit: Rex