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Related Experiment Video

Updated: Dec 3, 2025

A Method to Test the Efficacy of Handwashing for the Removal of Emerging Infectious Pathogens
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Approximation of alcohol-based hand sanitizer volume using a toothpaste cap.

Mohit Kumar Gupta1, Shari R Lipner2

  • 1State University of New York Downstate College of Medicine, Brooklyn, USA.

Cutis
|October 26, 2020
PubMed
Summary

Alcohol-based hand sanitizers are safe and effective for disinfection. A simple toothpaste cap can help ensure the correct volume is used for optimal hand hygiene.

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Area of Science:

  • Microbiology
  • Infection Control
  • Dermatology

Background:

  • Alcohol-based hand sanitizers (ABHS) are critical for infection control.
  • Misconceptions about skin damage may lead to underuse of ABHS by healthcare professionals and the public.
  • Adequate volume is essential for effective hand disinfection with ABHS.

Purpose of the Study:

  • To address the underuse of alcohol-based hand sanitizers.
  • To demonstrate a simple method for achieving adequate sanitizer volume.
  • To counter the false perception of skin damage from ABHS.

Main Methods:

  • Described the use of a standard screw-top toothpaste cap.
  • Utilized the cap to measure an approximate volume of alcohol-based hand sanitizer.
  • Evaluated the method for achieving adequate hand disinfection.

Main Results:

  • The toothpaste cap provides a practical tool for approximating the correct volume of ABHS.
  • This method facilitates adequate hand disinfection.
  • The study addresses concerns regarding potential skin damage, implying its safety when used correctly.

Conclusions:

  • The underuse of alcohol-based hand sanitizers can be mitigated by addressing false perceptions and providing practical usage guidance.
  • A simple tool, like a toothpaste cap, can ensure sufficient sanitizer volume for effective hand hygiene.
  • Promoting correct usage of ABHS is vital for infection prevention efforts.