Isopropyl alcohol, like many high proof ethanol products, is extremely antimicrobial against bacteria. This is why IPA is a popular antiseptic. It is what doctors swab your skin with before injections, what piercers use to prepare your skin for a piercing, and is found in many hand sanitisers.
The properties within isopropyl alcohol are known as antimicrobial which means it kills microorganisms (bacteria, fungi, germs) or stops their growth – such as the spread of germs. It kills 99.99% of germs within about 10-30 seconds, making it the perfect sterilisation tool.
note: excessive use on skin can be drying