Reverse graffiti spotted in Singapore today at the old Kallang Gasworks. By Caltex - Clean by Techron. It will be cleaned off completely in 8 weeks. Wonderful execution and environmentally friendly too!
It's not the first time a reverse graffiti concept is used to spread an environmental protection message. The World Carfree Day 2007 did a spectacular one in Sao Paulo as well. Nonetheless, I am really impressed by this wonderful out-of-home execution!
Really really good....