Two save guidance documents which can we use of nanotechnology by the food and cosmetics industries. This guidance have been issued by the U.S. Food and Drug Administration Center. Nanotechnology is an great evolving technology that allows scientists to create, explore, and manipulate materials on a scale measured in nano-meters. Particles it so small that they can not be seen with a regular microscope. The technology has a broad range of potential applications for up to use. Such as the packaging of food or altering the look and feel of cosmetics.