"Face-Bon", the latest product of Knut Company's "stick series" in 2005, is a tool specifically designed for optimizing portrait digital photos. "Face-Bon" uses special image processing technology to make the skin of people in digital photos appear smooth, fine and even. Its unique "skin texture preservation" technology can make the processed skin look realistic and natural; "highlight area processing" and "automatic dark spot removal" technology can cover up defects on portraits; skin color adjustment can make the skin look white, tender and smooth, or as healthy and bronze as after a sunbath; the software also includes sharpness adjustment to make the focus of the portrait stand out more.