Those old aunties who grumble about graffiti in their neighbourhoods might find their heads exploding over this. Local street art aficionados HK Walls have teamed up with sustainable Thai festival Wonderfruit to bring “reverse graffiti” to the streets of Sham Shui Po and Tsim Sha Tsui.

Rather than dirtying Hong Kong’s façades, this form of urban art actually cleans them, with the images scrubbed into mucky surfaces using power washing and elbow grease.
Take a gander at the video:
“Believe it or not, it was actually not an easy task to find a dirty enough wall to do the power washing,” suitably mohawked, inked-up artist Hughie Doherty said. “I guess Hong Kong isn’t as dirty as say Bangkok or Jakarta when to comes to road-side grime. It’s been funny to see passers-by doing a double take when they realise that the fruits weren’t painted, but washed off.”

The concept, which has been employed by artists all over the world, is being used by the festival – which takes place in Pattaya from Dec. 17-20 – as a no-waste solution for promoting the eco-event in Hong Kong.

