Post by drizsak on Nov 3, 2014 7:54:11 GMT -5
Two recent cases, one from Dr Bruss and another from Dr Levitt brings this subject to the forefront:
Effect of a Depilatory Agent on Cotton, Polyester, and Rayon Versus Human Hair in a Laboratory Setting
Pediatrics/Brief research report
Annals of Emergency Medicine
September 2014
Jocelyn A. Plesa, MDa, , , E-mail the corresponding author,
Kelly Shoup, BSNb,
Mioara D. Manole, MDa,
Robert W. Hickey, MDa
DOI: 10.1016/j.annemergmed.2014.08.026
Editor’s Capsule Summary
What is already known on this topic
Depilatory agents dissolve a hair strand and can be used to remove a hair tourniquet but are of unknown efficacy for tourniquets from clothing fibers.
What question this study addressed
To determine in a laboratory setting the ability of a depilatory agent to break strands of human hair, as well as cotton, polyester, and rayon fibers.
What this study adds to our knowledge
Depilatory agents dissolved hair strands within a few minutes, but did not dissolve cotton, polyester, or rayon fibers after 8 hours.
How this is relevant to clinical practice
Clinicians should test a depilatory agent to treat a suspected or possible hair tourniquet. However, alternate removal methods should be used if this approach is not successful within 10 minutes of application
Study objective
We examine the ability of a depilatory agent, Nair, to dissolve strands of hair, cotton, polyester, and rayon.
Methods
We conducted a bench laboratory study in which we tested single strands of hair and natural and synthetic fibers under static tension with a 10.8-g weight and application of Nair. The dependent variable, time until breakage, was recorded. If the strand did not break within 8 hours, the experiment was discontinued. Three types of hair were tested (thin, medium, and thick, as recorded per diameter). Three types of natural and synthetic fibers were tested (cotton, polyester, and rayon).
Results
All types of hair had breakage within 10 minutes of the Nair application. Synthetic materials had no breakage after 8 hours with application of Nair.
Conclusion
Depilatory agents dissolve hair under tension within minutes. However, they do not dissolve cotton, polyester, and rayon even after many hours of application.
Effect of a Depilatory Agent on Cotton, Polyester, and Rayon Versus Human Hair in a Laboratory Setting
Pediatrics/Brief research report
Annals of Emergency Medicine
September 2014
Jocelyn A. Plesa, MDa, , , E-mail the corresponding author,
Kelly Shoup, BSNb,
Mioara D. Manole, MDa,
Robert W. Hickey, MDa
DOI: 10.1016/j.annemergmed.2014.08.026
Editor’s Capsule Summary
What is already known on this topic
Depilatory agents dissolve a hair strand and can be used to remove a hair tourniquet but are of unknown efficacy for tourniquets from clothing fibers.
What question this study addressed
To determine in a laboratory setting the ability of a depilatory agent to break strands of human hair, as well as cotton, polyester, and rayon fibers.
What this study adds to our knowledge
Depilatory agents dissolved hair strands within a few minutes, but did not dissolve cotton, polyester, or rayon fibers after 8 hours.
How this is relevant to clinical practice
Clinicians should test a depilatory agent to treat a suspected or possible hair tourniquet. However, alternate removal methods should be used if this approach is not successful within 10 minutes of application
Study objective
We examine the ability of a depilatory agent, Nair, to dissolve strands of hair, cotton, polyester, and rayon.
Methods
We conducted a bench laboratory study in which we tested single strands of hair and natural and synthetic fibers under static tension with a 10.8-g weight and application of Nair. The dependent variable, time until breakage, was recorded. If the strand did not break within 8 hours, the experiment was discontinued. Three types of hair were tested (thin, medium, and thick, as recorded per diameter). Three types of natural and synthetic fibers were tested (cotton, polyester, and rayon).
Results
All types of hair had breakage within 10 minutes of the Nair application. Synthetic materials had no breakage after 8 hours with application of Nair.
Conclusion
Depilatory agents dissolve hair under tension within minutes. However, they do not dissolve cotton, polyester, and rayon even after many hours of application.
