käsidesinfektioaineen

Käsidesinfektioaine, commonly known as hand sanitizer, is a liquid, gel, or foam preparation used to kill microorganisms on the hands. It is an alternative to washing hands with soap and water when these facilities are not readily available. The primary active ingredient in most hand sanitizers is alcohol, typically ethanol or isopropanol, at a concentration of at least 60%. Other formulations may use non-alcohol-based disinfectants such as benzalkonium chloride or chlorhexidine, though alcohol-based products are generally considered more effective against a broader spectrum of pathogens.

The effectiveness of hand sanitizers relies on their ability to denature proteins and disrupt cell membranes of bacteria and viruses. For optimal efficacy, the hands should be rubbed together thoroughly until the product is dry, ensuring all surfaces of the hands and fingers are covered. While convenient, hand sanitizers are not a substitute for handwashing in all situations. They are less effective at removing physically visible dirt and grime, and may not be as effective against certain types of germs, such as norovirus or Clostridium difficile.

The use of hand sanitizers has become widespread, particularly in healthcare settings and public spaces, to reduce the transmission of infectious diseases. It is important to use hand sanitizers that are approved by relevant health authorities and to follow the instructions for use carefully. Overuse or improper use, such as not allowing the product to dry completely, can reduce its effectiveness. Storage should be in a cool, dry place away from heat and open flames, as alcohol is flammable.