OS Protect was developed to provide prolonged microbial protection on the skin. Repeated use enables the product to build up a protective microbial barrier minimising cross infection risk. SOS Protect features built in moisturising properties thus repeated applications does not dry or adversely affect the skin. Alcohol free and ph. balanced for ultimate skin protection. Prolonged antimicrobial action (up to 3 hours). Leaves hands fresh, moisturised & protected. Kills 99.9% Bacteria. SOS PROTECT is a Benzalkonium Chloride-based hand sanitiser. These have a greater sustained antibacterial activity than alcohol-based hand sanitisers. It is fast-acting, non-flammable, non-damaging to the skin and is persistent. Studies show that Benzalkonium Chloride-based hand sanitisers become more effective (without irritation) after repeated use. Recommended for repeated use.