Clear Zinc Oxide, Foil Packets by R&R Lotion ICSSF-30 - Formulated as a Physical Sunscreen with Natural Clear Zinc Oxide. Physical Barrier Technology, Water Resistance 80 Minutes, PA / UVA, Accepted Worldwide / ISO 24444 / ISO 24442, ASTM D120 Compliant, Point to Point Resistance Testing on Gloves. Zinc Oxide provides the highest physical protection, acting like a million tiny mirrors reflecting both UVA and UVB rays. Formulated with Micro Fine Zinc Oxide that rubs into your skin without leaving a white residue. Clear Micro Fine Zinc Oxide is the only natural Physical Barrier that stops both UVA & UVB Rays.