Paint is a very important thing in today’s world, and is used widely in rooms, buildings, cars, and possibly everything. It is quite useful, but it also has harmful environmental aspects. So, a company called Sto AG from Germany has developed a coating for paints which has a water repellent surface, quite like that of a lotus leaf. It was developed by professor Wilhem Barthlott, from university of Bonn in Germany. He got the idea after  looking for environment friendly alternatives to toxic cleaning detergents to reduce environmental impacts. He got the answer after looking at the extremely hydrophobic surface of the lotus leaf. He asked the question ‘How does nature clean surfaces?’ It became obvious that nature doesn’t use detergents at all – instead it designs self-cleaning surfaces with hydrophobic properties.