The Visioscan® VC 20plus is a unique UVA-light video camera with high resolution to study the skin surface directly. The SELS® parameters (Surface Evaluation of the Living Skin), have been developed especially for this camera and are used in numerous studies. The camera can be used on skin, hair and nails. With its multi-functional software, the Visioscan® VC 20plus is a very flexible system to characterize skin surface condition easily, accurately and very economically. It had been used on board of the International Space Station ISS for several years.