The evolution of Wearable Computers is making it possible for wearers to move and interact freely with the world with nearly invisible technology embedded into clothing. Our aim is to create technology that is not just in clothing but on the skin surface as removable and hidden electronics. In this paper, we introduce the term 'Beauty technology' as an emerging field in Wearable Computing that hides electronic components within beauty products. This work outlines the technology used to hide electronic components in eyelashes, make-up, tattoos and nails, and it presents examples of the use of Beauty Technology in everyday beauty products. © 2013 Springer-Verlag Berlin Heidelberg.