Jada Pinkett Smith and Jaden Smith slam YouTube star Shane Dawson over vile video

Willow Smith and Jada Pinkett Smith. Photo / Getty

Warning: Explicit content

Jada Pinkett Smith and Jaden Smith have tweeted their disgust at a YouTube star after his vile video about Willow Smith resurfaced online.

The video clip shows YouTuber Shane Dawson pretending to masturbate over a poster of Willow Smith, who was just 11 at the time.

Willow's brother, Jaden, tweeted on the weekend that the clip was "not okay".

"Shane Dawson I am disgusted by you," Jaden tweeted. "You sexualising an 11 year old girl who happens to be my sister!!!!!! is the furthest thing from funny and not okay in the slightest bit."

Willow's mum Jada Pinkett Smith also tweeted, writing: "To Shane Dawson … I'm done with the excuses."

A still from the vile clip. Photo / Shane Dawson

The Smith family's comments came a day after Dawson, whose YouTube channel has 23 million subscribers, released a video apologising for inappropriate content he has posted in the past.

Dawson said he has "done a lot of things in my past that I hate, that I wish I could make go away, that I tried to make go away by deleting videos, or untagging my Instagram, literally doing whatever I can to pretend those things didn't happen".

The 31-year-old apologised for using blackface in videos and for joking about paedophilia.

"I would never talk about a child in any way that was inappropriate," he said. "That is disgusting. That is gross. That is something I did for shock value. I promise that is not me."

He blamed the paedophilia jokes on trauma he suffered during childhood.

"I've had a lot of pain, I've had a lot of issues with my family," he said. "I took that pain, and I turned it into jokes. Instead of joking about them, I should've gone to therapy."