What Hand Sanitizer Kills
Alcohol-based hand sanitizers with at least 60% ethanol or 70% isopropanol are effective against many bacteria, enveloped viruses, and some fungi. They work by denaturing proteins and disrupting cell membranes. According to the CDC, proper use helps reduce germs on hands when soap and water are unavailable. https://www.cdc.gov/handwashing/when-how-handwashing.html
Does Hand Sanitizer Kill All Germs
No sanitizer eliminates every pathogen. It is less effective against bacterial spores such as Clostridioides difficile, non-enveloped viruses like norovirus, and certain parasites. Visible dirt, grease, or chemicals can also reduce effectiveness. In these cases, washing with soap and water remains the recommended method.
How to Maximize Effectiveness
Apply the recommended amount, usually about a palmful, and rub over all surfaces of hands until dry. Coverage of fingertips, thumbs, and between fingers matters. Let hands air dry; do not wipe before the sanitizer evaporates. Using expired or improperly stored product can lower germ-killing performance.
