FOX Channel launched the series The Passage. It tells the story of a virus that turns people into vampires and could bring about the end of the human race. To promote the first season of the series, the channel partnered with BETC/Havas in an action that created special posters that are vulnerable to sunlight. The pieces were put up at night on the streets of São Paulo. At daybreak, when the first rays of sunlight hit the poster, the paper would begin to burn until it turned to ashes. Just like vampires. Check out the video: https://youtu.be/8eKkPN6imE8 The effect was made possible thanks to the creation of a flammable paint made from a mixture of special paint, potassium permanganate ( KMnO4), and sulfuric acid ( H2SO4), which was applied to the back of the posters. As soon it came into contact with sunlight, the paper would begin to combust, catching fire immediately.