4hr Shield Hand Sanitizer effectively continues killing bacteria and viruses for 4+ hours into the future. Best Hand Sanitizer for Bacteria and viruses! 4HR SHIELD is in a solution of pH10 containing NanoPlatelets (NP) of Magnesium Hydroxide Mg(OH)2, Copper, and Benzalkonium Chloride that attaches to bacteria and viruses. Clinically proven to kill 99.9 % of all bacteria tested including SARS, Anthrax, MRSA. 4HR SHIELD effectively continues killing bacteria and viruses for 4+ hours into the future. https://www.4hrshieldnanoglove.com/product.phpAll Rights Reserved