Hand sanitizer

Definition

Hand sanitizer is a liquid or gel used to reduce pathogenic microorganisms on the hands. It typically contains alcohol, which acts as an antimicrobial agent.

5 Must Know Facts For Your Next Test

1. Hand sanitizers with at least 60% alcohol content are most effective in killing germs.
2. Non-alcohol-based hand sanitizers may not be as effective against certain types of germs, such as norovirus.
3. Hand sanitizers can quickly reduce the number of microbes on hands but do not eliminate all types of germs.
4. Proper application involves covering all surfaces of the hands and rubbing for at least 20 seconds until dry.
5. Overuse of hand sanitizer can lead to skin irritation and reduced skin barrier function.

Review Questions

• What is the minimum alcohol concentration required for hand sanitizers to be effective?
• Why might non-alcohol-based hand sanitizers be less effective?
• How long should you rub your hands with hand sanitizer for it to be effective?

Related terms

Disinfectant: A chemical substance used to kill or inhibit the growth of harmful microorganisms on surfaces.

Antiseptic:

A substance applied to living tissue/skin to reduce the possibility of infection, sepsis, or putrefaction.

Bactericidal Agent: A substance that kills bacteria outright rather than merely inhibiting their growth.