Method of using optically-activated particles in cosmetic preparations

Published: 4-Jul-2006


Claimed are optically-activated particles encapsulated within a UV transparent coating that are able to absorb ultraviolet radiation and emit visible light to reduce the visual perception of skin imperfections, including cellulite, shadows, skin discolouration and wrinkles.

The optical brightener compound is selected from the group consisting of Tinopal 5BM, Stilbene 4, Stilbene 3 and Leucophor BSB Liquid, or equivalents. It adheres to the substrate particle through Van Der Waal's forces, ionic bonding and covalent bonding and forms a layer at least one molecule thick. The bonded particles are less than 30 microns in diameter and are colourless, translucent and non-visible to the human eye.

The particle substrate is selected from the group consisting of nylons, acrylics, polyesters or other plastic polymers, natural materials, regenerated cellulose, metals, minerals or other suitable materials, and has an index of refraction greater than 1 in order that the image of the skin imperfection is bent away from the viewer's visual axis. A final coating of a UV transparent material such as polyoxymethylene urea completes the encapsulation.

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