Ashton Kutcher and Demi Moore have launched an anti-sex trafficking campaign under the slogan ‘Real Men Don’t Buy Girls’.

Moore said that men who buy sex often don’t think of the consequences of their actions, or that the girls providing them with the service could be sex slaves.

Speaking to USA Today, Demi said: “Modern-day slavery is such a complicated issue, but we’re trying to do what we can to make men think twice before they engage in this.

“The message to the guys is, these girls aren’t who you think they are.”

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In a video message on their Facebook page, Ashton Kutcher and Demi Moore encourage male viewers to add their faces to the Wall of Fame for ‘Real Men’, while their names will be read out by Moore – or her celebrity friends Jessica Biel, Eva Longoria, and Sofia Vergara, who all have pre-recorded hundreds of names for the project.

Watch Demi and Ashton’s anti sex trafficking video here.

[View:http://www.youtube.com/watch?v=S7nsB7TFWls]

Female viewers can also participate in the video campaign, making them official supporters of ‘Real Men’.

Justin Timberlake, Sean Penn and Bradley Cooper are other celebs who have joined forces with Kutcher and Moore’s campaign, featuring in videos called ‘Real Men Know How To Use An Iron’, ‘Real Men Prefer A Close Shave’ and ‘Real Men Know How To Make A Meal’.

Kutcher said he decided to take action against the sex slave industry after watching a feature about sex trafficking in Cambodia on NBC’s news show Dateline.

He said: “I was watching six and seven-year-old girls being raped for profit.

“I said to myself, “I don’t want to live in a world where these things are happening and I’m not doing anything about them.”

Between 100,000 and 300,000 girls are enslaved and sold for sex in the US alone, with more than one million girls being forced to prostitution worldwide.

For more about Demi & Ashton Foundation campaign, click here.

Sign up for the Facebook page here.