SkinShield 24? is a durable moisturizing antimicrobial skin protector. Its Nano Stabbing technology creates a water resistant protection that continuously kills 99.9% viruses, bacteria and fungi for 24 hours, even after repeated washing. Tests have proved that it retains 99.9% antimicrobial efficacy on skins surface even after repeated washing.ISO 18184: 2019(E) shows that it can effectively and continuously kill 99.9% of human coronaviruses.