Art is all around, all the time. Oftentimes, due to the abundance of it, it will pass by unnoticed. The Brazilian graphite artists, “Os Gêmeos”, have used spray paint, to create an entire universe where urbanity and real-world issues are broadcasted and made known of. Still, there are very few people that know beyond what the art is showing, and who know what is used to make art. Yes, in this case, spray paint, and still, what is spray paint made of? Among several compounds in it, one of the most crucial is acetone1.