1. A system for changing an appearance of a region of human skin of a first person, the system comprising: at least one reflectance modifying agent application element, the reflectance modifying agent application element being operable to selectively apply one or more reflectance modifying agents to frexels of the human skin; a computing environment that is coupled to the at least one reflectance modifying agent application element and that is operable to perform operations comprising: obtaining a first image showing one or more features desired for the region of the human skin, scanning a plurality of frexels of the human skin, generating a feature map based on the plurality of frexels, generating enhancement data based on the first image and the feature map, generating a second image based on the enhancement data, and instructing the at least one reflectance modifying agent application element to apply the one or more reflectance modifying agents to at least one of the plurality of frexels based on the second image.