Wet hands attract more germs than dry hands, which means drying is as important as washing them carefully with soap and water. When it comes to using a hand dryer or paper towels, the World Health Organisation (WHO) says that hand dryers are not effective at killing the new coronavirus and may in fact circulate germs and air particles around. The NHS advises drying your hands thoroughly using paper towels after washing your hands. Paper towels absorb residual moisture quickly and can be disposed of without risk of cross-contamination. The health agency recommends using paper towels or to a lesser extent a warm air drier to dry your hands thoroughly after you wash your hands with soap and water. Want to learn more - read this article from the Journal of Applied Microbiology https://www.ncbi.nlm.nih.gov/pubmed/26618932