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It?s important to make sure any hand sanitizer you do use contains at least 60 percent alcohol. Studies have found that sanitizers with lower concentrations or non-alcohol-based hand sanitizers are not as effective at killing germs as those with 60 to 95 percent alcohol. Hand sanitizer?is a?liquid?generally used to decrease?infectious agents?on the?hands. Formulations of the?alcohol-based type are preferable to?hand washing with soap and water in most situations in the healthcare setting.?It is generally more effective at killing?microorganisms and better tolerated than soap and water.?Hand washing should still be carried out if contamination can be seen or following the use of the toilet.?The general use of non-alcohol based versions has no recommendations.?Outside the health care setting, evidence to support the use of hand sanitizer over hand washing is poor.?They are available as liquids, gels, and foams.[5] Alcohol-based versions typically contain some combination of?isopropyl alcohol,?ethanol?(ethyl alcohol), or?n-propanol.?Versions that contain 60 to 95% alcohol are most effective.?Care should be taken as they are?flammable.?Alcohol-based hand sanitizer works against a variety of?microorganisms?but not?spores. Some versions contain compounds such as?glycerol?to prevent drying of the skin.?Non-alcohol based versions may contain?benzalkonium chloride?or?triclosan. Alcohol has been used as an?antiseptic?at least as early as 1363 with evidence to support its use becoming available in the late 1800s.?Alcohol-based hand sanitizer has been commonly used in Europe since at least the 1980s.?The alcohol-based version is on the?World Health Organization?s List of Essential Medicines, the safest and most effective medicines needed in a?health system. Protect you self from the new common coronavirus or COVID-19.