New formula works to sanitize the skin and hair but without alcohol. Alcohol is very drying on the skin so this is a great option for those having issues with dry, cracked hands from using too much hand sanitizer. Comes in a 4 ounce spray bottle and is easy to use. This is how Benzalkonium Chloride works: Benzalkonium chloride(BAC) is a cationic surfactant (that means it can dissolve the lipid in the bad cell-wall) thus making it more effective in its action compared to a alcohol based sanitizer which does not contain it.s.