Nanoparticle Compositions Providing Enhanced Color for Cosmetic Formulations

Abstract

The present invention relates to cosmetic, dermatological, and pharmaceutical compositions that deliver, in an acceptable vehicle or carrier comprising a film former or wax and an effective amount of nanoparticles and one or more pigments and methods for improving the appearance of a biological surface by altering the optical properties of the biological surface. The compositions of the invention enhance color and may be topically applied to the biological surface in an amount effective in improving the aesthetic and natural appearance of the biological surface.

Description

FIELD OF THE INVENTION[0001]The present invention generally relates to cosmetic, dermatological, and pharmaceutical compositions and their use. More particularly the present invention relates to cosmetic compositions and their use in improving the appearance of biological surfaces.BACKGROUND OF THE INVENTION[0002]Modern skin care formulations must meet high standards of efficacy, skin compatibility and aesthetic appeal. Consumers are interested in mitigating or delaying the dermatological signs of chronologically-aged, hormonally-aged or photo-aged skin, such as fine lines, wrinkles, drying, and sagging skin, and other conditions due to a progressive degradation of the skin matrix. Consumers are interested in improving the appearance of, for example, skin, lips, nails, and hair by imparting to these biological surfaces a certain color, which would ideally produce an appearance of a uniform, lively, smooth and even surface, with no apparent imperfections. Therefore, there is a need f...

AI Technical Summary

Benefits of technology

This patent describes a new composition that can be applied to biological surfaces to improve their appearance. The composition contains nanoparticles and pigments that control how light is transmitted, absorbed, and scattered on the surface. The composition can be used to reduce signs of aging, wrinkles, and discoloration, and can also be applied for cosmetic purposes to add color and make the surface appear smoother. The method of using the composition involves applying it to the surface and allowing it to dry. Overall, this patent provides a new way to improve the appearance of biological surfaces and enhance the overall aesthetic appearance of the skin.

Problems solved by technology

Presently, make-up compositions that are applied to biological surfaces to impart a certain color such as foundations, face powders, eyeshadows, lipsticks, concealers, blushers, mascaras, eyeliners, lip pencils, eye pencils, or nail varnishes have difficulty achieving a perfect, flawless lively color because cosmetic ingredients such as coloring agents, which provide the desired color and coverage, generally have many limitations.

Inorganic pigments, and in particular inorganic oxides, have the advantage of being relatively stable, but have the drawback of imparting rather dull, pale colors to the material being colored.

Some of these coloring agents also have the drawback of leaving unsightly marks on the skin or the nails after application.

Moreover, certain coloring agents have the drawback of generating free radicals in make-up formulations, which modify the color of the applied make-up and the stability of the compositions.

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