Hydroxyl radicals are photochemically formed in the atmosphere as a reaction to different wave lengths of light interacting with water and chemicals in the air. Hydroxyls are constantly being created in high quantities as a product of this natural process with each formation lasting less than a second. They instantly seek out and destroy contaminants in the air and on surfaces making them well known as ‘natures most powerful cleaning agent’. Hydroxyl radicals also contribute to the elimination of greenhouse gases such as carbon dioxide and methane.