In an illustrative sequence of exercises, we teach our students how to don, use, and take off sterile gloves correctly and how to wash hands properly. During this sequence, the effect of a good handwashing technique as well as the effect of failures in aseptic technique with gloves is made directly visible by the use of finger paints. This technique helps medical staff to visualize microbial contamination of the hands and to increase the awareness of breaks in aseptic technique.