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Wed like to find a new pigment application (or another way of masking discoloration) that is compatible with our current line of products, and that is smart enough to work both with light and the natural color of the underlying skin to provide a smooth, even skin tone. It would minimize the appearance of a wide range of skin tone variations and causes. Cosmetics OVERVIEW looking topical approaches even skin tone appearance dark areas spots discolored less noticeable imperfections quite Sun age acne scars spider veins freckles under-eye circles hyperpigmentation bruising types discolorations want mask BACKGROUND material depends affects optics beneath applications colors complementary hue eyes purplish yellow base bluish orange Skin reflects amount light depending nature shape particles emulate skins natural light-scattering abilities blending effect Unfortunately best materials covering least natural-appearing worst job concealing pigment-grade titanium dioxide covers perfectly looks opaque chalky aluminas silicas blur dont good Pigments morphologies shapes aspect ratios reflectance light-reflecting coverage losing naturalness solution needs contend surrounding blends across lighter darker continuous regardless variation underneath ingredient diffuses concealment along gradient work (ie term treatment) CONSTRAINTS Compatible water-based formulations preferred (eg emulsions) wont degrade presence oil Good tactile aesthetics objectionable odor Three-year shelf life Ingredients derived animals Safety toxicity data profile Sample availability strongly Solution adversely stability product (includes thermal -- elevated temperature alternating freeze/thaw) Ideally wide pH IP clear freedom operate readily standard manufacturing sources sufficient quantities business Particles greater 100 nm 50 microns SOLUTION AREAS Polymer molecular chemistry dealing substances Camouflage research Photo-responsive Food preservatives Paints inks coatings Movie/animation Medical reconstructive plastic surgery) |
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