Hand sanitizers often contain 70 percent or more isopropanol or ethanol, which usually annihilates bacteria. The alcohols essentially shred the microbes' outer membranes, causing molecular mayhem and the germs’ innards to leak out. In high concentrations, the alcohols are quickly fatal.
https://arstechnica.com/science/2018/08/hospital-superbugs-are-evolving-to-survive-hand-sanitizers/
https://arstechnica.com/science/2018/08/hospital-superbugs-are-evolving-to-survive-hand-sanitizers/