Sunscreen additives for enhancing vitamin D production
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United States of America Patent
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Jun 12, 2018
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app pub date -
Mar 28, 2016
filing date -
Sep 3, 2015
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Abstract
Sunscreen additives for enhancing vitamin D production are provided herein. A method includes selecting phosphor materials to incorporate into zinc oxide particles, wherein the phosphor materials are capable of carrying out an up-conversion process whereby two or more photons absorbed by the zinc oxide particles and/or the phosphor materials within a first wavelength range are emitted as at least one photon within a second wavelength range. The method also includes incorporating the selected phosphor materials into the zinc oxide particles. A composition includes zinc oxide particles suspended within a medium of a sunscreen composition, and phosphor materials incorporated into the zinc oxide particles, wherein the phosphor materials are capable of carrying out an up-conversion process whereby two or more photons absorbed by the zinc oxide particles and/or the phosphor materials within a first wavelength range are emitted as at least one photon within a second wavelength range.
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