Alcohol-based hand sanitizer kills disease causing agents by breaking apart their proteins, blasting cells into pieces or disrupting the cell’s metabolism. It’s tough work but someone’s gotta do it.
Research has shown that 60-95% alcohol concentration works best at blasting a variety of bacteria and viruses. Anything lower than 60% merely reduces the growth of germs rather than extinguishing completely. Why not just use 100% alcohol concentration? Alcohol’s effectiveness levels out at about 90-95% concentration.
Alcohol-free hand sanitizers may not be as strong as its counterpart, but they definitely get the job done. Their special power is that it acts like a detergent, destroying cell membranes and killing microorganisms. Unlike any alcohol-based product that stops working once dried, benzalkonium continues to provide protection long after the solution is absorbed.