Zac Efron continues to sport dreadlocks following accusations of cultural appropriation

Zac Efron has come under fire for his new hair style. Photo / Instagram

It's been three days since Zac Efron debuted his dreadlocks on Instagram.

And despite the accusations of cultural appropriation, the 30-year-old actor has continued to sport the grunge hairstyle.

He and brother Dylan Efron are currently embarking on another "off-the-grid" road trip, according to Instagram.

The High School Musical star came under fire immediately after posting a black and white photo of his new do.

"Just for fun," he captioned the Instagram post, which has garnered more than 1.5 million likes.

The comments from followers were a mixed bag.

View this post on Instagram

Just for fun 🤘

A post shared by Zac Efron (@zacefron) on Jul 5, 2018 at 10:24am PDT

One Instagram user said: "lmao take these out. This hairstyle does not belong to white people. Educate yourself and apologise."

@h.k.ma agreed: "Another white dude begging to be mixed race..."

But @rl.marmol disagreed: "Yo. It's hair. It's not that serious."

Zac, who is normally well groomed, has yet to respond to the controversy.

Meanwhile, the actor will be back on the big screen in the film Extremely Wicked, Shockingly Evil and Vile.

He plays the notorious serial killer Ted Bundy in the film, which also stars Lily Collins.