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4/7/2020 WORLD PANDEMIC   COVID-19 Coronavirus update:  1,365,327 confirmed cases | 76,504 reported deaths  | 47,666 in critical condition

4/7/2020 WORLD PANDEMIC   COVID-19 Coronavirus update:  1,365,327 confirmed cases | 76,504 reported deaths  | 47,666 in critical condition

More Information : Prefense Frequently Asked Questions


Why use Prefense alcohol-free hand sanitizer vs. traditional alcohol-based products?

Prefense™ moisturizing foaming hand sanitizer actively protects hands and skin for up to 24+ hours or up to 10 hand washings. Traditional alcohol-based products only kill germs that are actively on your skin, but don’t protect you after the product is dry. They evaporate in about 30 seconds and have limited efficacy because of the limited amount of residence time they offer.  

In addition, the use of alcohol removes the natural oils normally found on your skin and inherently causes damage to the skin, which can be cumulative, or increasing severity over time and repeated exposure. Dryness, chapping and cracking are all side effects of excessive direct alcohol exposure.  Once the skin is compromised, the ability to keep detrimental things out (pathogenic organisms) is reduced and compromised, allowing microbiological entities direct access into your body.

Does Prefense™ Protect Against Coronavirus or COVID-19?

We are unable to test vs. coronavirus as it is locked up, mainly, in government level IV test labs. So the FDA will not let us, or other hand sanitizer manufacturers, tell you it works against coronavirus until we directly test it against coronavirus. We can tell you we work against 3 flu viruses and other similar viruses that we have tested against and coronavirus is considered a flu strain.

What's the Active Ingredient

FDA approved Amosilq (Benzalkonium Chloride/Silica Complex... 0.12%. Benzalkonium Chloride (aka BAC) has been long considered by medical professionals for being one of the safest compounds. BAC has been used for the past 40 years in a wide variety of consumer and healthcare related antiseptic and antibacterial products including spermicidal foams, dinner wipes, ophthalmic, cosmetic and food preservatives!

How does Prefense work?

This unique product has the active ingredient suspended and stabilized in a silica matrix solution that bonds with your skin. Prefense™ can adhere to skin for longer than 24 hours, in tests our product remains bonded to the skin for up to 48 hours, however, human skin sloughs off at a rate of 20-40 million cells per day, limiting the recommended interval to 24 hours. The “through 10 hand washings” refers to 10 normal hand washing circumstances, such as a restroom break. If you are washing and drying your hands numerous times a day, operating machinery such as a sander, or working with harsh chemicals, we recommend more than one application to ensure protection.

How Can Prefense Stay on the Hands for 24 hours?

Prefense's silylated QAC’s have the ability to react with and chemically bond to inanimate surfaces such as cellulose fabrics, glass, zeolite, etc., with retention of antimicrobial activity. When applied to the hands, quaternary ammonium organosilane bind to the skin via covalent, electrostatic, or hydrogen bonds, forming an antimicrobial layer (think "invisible glove") to inactivate existing skin pathogens as well as pathogens that contaminate the skin long after application of the sanitizer. If a germ transfer occurs, Prefense™ actively slices the cell wall of pathogens for up to 24+ hours or ten hand washings.

How often can Prefense be used?

Prefense can be used as often as needed.

Will Prefense stain floors, carpets, fabrics, or other surfaces?

Unlike alcohol-based sanitizers, Prefense will not stain or harm any surfaces, fabrics, or floors. It will not cause the unwanted removal of nail polish. Prefense makes an amazing surface sanitizer where it stays active for 28 days.

What does the EPA say about non-alcoholic hand sanitizers?

Hand sanitizers do not require EPA registration. Hand sanitizers are separate from surface sanitizers and disinfectants, which require compliance to a different set of regulations. Prefense is in accordance with the FDA’s Tentative Final Monograph (TFM) which approves up to .13% Benzalkonium Chloride (BAC) as an active ingredient.

Does Prefense harm or damage jewelry?

No, Prefense will not harm or damage jewelry.

Is Prefense an FDA approved product?

The FDA does not approve hand sanitizer. Prefense is an over-the-counter product, and is FDA listed and TFM compliant. Prefense is in accordance with the FDA’s Tentative Final Monograph (TFM) which approves up to .13% Benzalkonium Chloride (BAC) as an active ingredient.

FDA Listing: NDC LISTED: 48404-037-01, 02, 03, & 04.

PATENTED: #6613755

  • Patent holder, Dr. William Peterson, is a major shareholder in Prefense, LLC.
  • Prefense is produced under a licensing agreement.
  • Efficacy study, from Iowa State University, February 2008.
  • Additional studies from numerous entities are referenced.
  • Antimicrobial activity that is manifested by disruption of microbial cell membranes, resulting in leakage of intracellular metabolites and cell death.

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Prefense™ products are temperature-sensitive and must be stored at temperatures no less than 40°F and no more than 110ºF

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