Courage + Khazaka electronic has been the world market leader in producing skin testing equipment for many years. The devices measure the whole range of parameters and the scientific instruments have become standard in objective clinical diagnosis for dermatology (in clinical research and for the practical dermatologist) and in the R&D departments of the cosmetic/pharmaceutical/raw material companies and the independent testing laboratories doing efficacy testing and claim support. Due to their ease of use and their economical prices the instruments are not only used by the large international companies but also by smaller and medium sized cosmetic companies to test their products at each state of the development. Of course this is only a selection of the user groups. There are many others interested in the skin (e.g. occupational medicine has found measuring the skin is very important in their field to prevent skin diseases among workers), food industry etc.