Q: Are these sprays safe?
A: Yes. The main ingredient is 70% denatured ethanol, common to all sanitizers. The protocatechuic acid in solution, that becomes a crystalline coating after the alcohol evaporates is Generally Recognized as Safe by the FDA as a food flavoring agent. As such, you could eat it, not in this application. The fragrance is an essential oil of less than 1% and is safe.
Q: How many sprays in the 7-ounce bottle? How long should it last?
A: An amazing 1,500 plus sprays in each bottle. Fifteen hundred to be exact. If you spray each hand once on a daily basis, then the bottle should last 750 days or more than 2 years.
Q: How often should the spray be applied?
A: It should be applied when one suspects they are vulnerable to exposure. Application to the skin would be a few times a day, especially if washing with soap and water was not available. The application to a mask may be daily as would any hard surface in the environment.
Q: Will the alcohol dry my skin?
A: Unlikely, as there remains a coating on your skin that has medicinal properties that may heal or repair skin.
Q: What evidence do you have that the alcohol or the residual PCA crystalline coating will kill microbes?
A: Alcohol is a common disinfectant killing 99.9%+ of microbes. The PCA coating has supporting evidence as a broad-spectrum antibiotic and a biofilm destroyer of MRSA and Pseudomonas. Two US patents have been issued based upon this supporting Evidence-Based Practice.
Two different independent laboratories have established that the crystalline coating of PCA will immediately inactivate the SARS CoV2 virus on contact. Patents and FDA applications are pending. FDA Application Summary
Q: How do I use Spray Away D.O.A. on my mask?
A: Spray often, BUT allow it to dry a few minutes before using. Spray daily and certainly after washing a mask.
Q: How long with the anti-microbial effect last on the skin, masks or hard surfaces?
A: PCA crystals will last on a surface as long as it is not physically removed or washed off with water or alcohol.
Q: Are there any cautions to the use of Spray Away D.O.A.?
A: Yes. One should avoid exposure to the eyes because of the alcohol. The PCA may stain a natural stone surface, as limestone or kitchen counter granite. In that case, an application of baking soda in water has removed the dark color off the stone.
Q: How long will the crystals last on a hard surface?
A: At least one year unless scraped or washed off.