Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form
Reexamination Certificate
2001-11-09
2004-10-26
Page, Thurman K. (Department: 1616)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
C424S401000, C424S489000, C514S937000
Reexamination Certificate
active
06808715
ABSTRACT:
FIELD OF THE INVENTION
The invention relates to cosmetic materials and in particular to cosmetic materials used to improve the appearance of skin and reduce skin wrinkles.
BACKGROUND OF THE INVENTION
Numerous cosmetics exist for treatment and concealment of wrinkles. The problem of how to alleviate wrinkling and improve the health and appearance of wrinkled skin is ubiquitous and cosmetic methods for treatment of wrinkles are avidly sought.
U.S. Pat. No. 6,156,804, the disclosure of which is incorporated herein by reference, describes treating wrinkles and fine lines on the skin by topically treating the skin with a microdispersion of wax in a topical composition. U.S. Pat. No. 5,185,155, the disclosure of which is incorporated herein by reference, describes encapsulating hydrophobic material to form a dispersion of micro-encapsulates for use in cosmetic products.
SUMMARY OF THE INVENTION
An aspect of some embodiments of the present invention relates to providing a cosmetic material that reduces wrinkling and improves appearance of skin to which it is applied.
An aspect of some embodiments of the present invention relates to providing a cosmetic substance, which when applied to the skin forms a network of filaments of the cosmetic substance on the skin. The network anchors itself to the skin and to furrows of wrinkles in the skin. As a result of attraction between components of the cosmetic material from which the filaments are formed, the filaments tend to contract with substantial force. The network as a whole therefore tends to contract. Since the filaments of the network are anchored to the skin and furrows of wrinkles therein, the network functions to mechanically “pull out” wrinkle furrows in the skin, thereby smoothing the skin and drawing the skin taut.
An aspect of some embodiments of the present invention relates to providing a cosmetic substance, which when applied to the skin diffuses water by osmosis to blood vessels, interstitial fluid and cells in the skin and causes thereby the structure of the skin to swell and expand. The swelling tends to flatten out wrinkles and improve flow of blood and interstitial fluid in the skin that irrigates the skin with nutrients and removes metabolic waste materials from the skin.
An aspect of some embodiments of the present invention relates to providing a cosmetic substance that provides a peeling effect that detaches dead skin cells from the surface of the epidermis. When the cosmetic substance is removed from the skin, the detached dead skin cells are removed with the cosmetic substance.
In some embodiments of the present invention two or three of the aspects are present.
A cosmetic substance, in accordance with an embodiment of the present invention, comprises a composition of matter formed from water, hydrophilic silica particles and hydrophobic silica particles. In some embodiments of the invention a mass of hydrophilic particles in the composition is substantially greater than a mass of hydrophobic particles in the composition. For example, some embodiments of the present invention, may typically have mass ratios of hydrophilic to hydrophobic particles in a range from 6 to 20. Some embodiments may typically have mass ratios in a range from 3 to 10. Other mass ranges, in accordance with embodiments of the present invention are also possible. In some embodiments of the present invention, the composition takes a form of an aqueous emulsion. A majority of the hydrophilic particles in the emulsion remains in solution in the water and tends to form, with the water, a gel-like structure comprising relatively long filaments of hydrophilic particles to which water molecules adhere. Hydrophobic particles and a relatively small portion of the hydrophilic particles aggregate to form double layer shells that encapsulate pockets of air that are suspended in the water. The hydrophobic particles in a shell that encapsulates an air pocket are concentrated in an inner layer of the shell, which inner layer is in contact with the air in the air pocket. The hydrophilic particles in the shell are concentrated in an outer layer of the shell, which outer layer is in contact with the water. Optionally, additional hydrophilic particles are distributed in the water.
In some embodiments of the present invention, the cosmetic substance is powder-like and hereinafter is referred to as a powder. Particles that form the powder are droplets of water with hydrophilic particles in solution, each droplet encapsulated in a double layer shell having an inner layer comprising hydrophilic particles and an outer layer comprising hydrophobic particles. Most of the hydrophilic particles in the powder are dispersed in the water in the encapsulated water droplets and, as in the emulsion form of the cosmetic composition, tend to form with the water a gel-like structure comprising filaments of hydrophilic particles adhered with water molecules.
When the cosmetic substance, in either the emulsion or powder form, is rubbed into a region of skin, it forms a layer of the cosmetic substance on the surface of the skin. A portion of the hydrophilic particles in the layer migrate to and enter sweat gland ducts in the skin region, forming tendrils of hydrophilic particles that penetrate into the ducts. A portion of the hydrophobic particles migrate to and enter ducts of sebaceous glands located in hair follicles in the skin region, forming tendrils of hydrophobic particles that protrude into the hair follicles and ducts of their sebaceous glands. In particular, the hydrophilic and hydrophobic tendrils protrude into hair follicles and ducts of sweat glands and sebaceous glands in furrows of wrinkles in the skin region. Water in the cosmetic material diffuses by osmoses into interstitial fluid and cells in the skin.
As water leaves the cosmetic substance, the volume of the cosmetic substance contracts and the layer shrinks to a network of filaments on the skin. Each of the filaments is formed from a slurry of hydrophilic and hydrophobic particles in water. The hydrophilic and hydrophobic tendrils anchor the filaments to the skin region and wrinkle furrows therein.
As a result of the attraction of the hydrophilic particles to water and attraction of the hydrophobic particles to the hydrophilic particles and to water, the filaments tend to contract aggressively. It is noted that hydrophobic molecules do not generally repel water and are often attracted to water with greater force than they are attracted to each other. Hydrophobic effects evidenced by hydrophobic molecules generally result from attraction of water molecules to each other being greater than attraction of water to the hydrophobic molecules. The cosmetic filamentary network therefore tends to contract aggressively and thereby pulls out furrows of wrinkles in the skin and smoothes the skin.
The cosmetic substance optionally also functions as a peeling agent that tends to peel off dead skin cells from the epidermis. As a result of capillary action and attraction of hydrophilic and hydrophobic particles in the cosmetic substance to moisture and natural oils in the skin respectively, water and hydrophilic and/or hydrophobic particles in the cosmetic tend to penetrate between dead skin cells and the surface of the epidermis. If the skin is wet or moist, water and predominantly hydrophilic particles will tend to penetrate and concentrate between the dead skin cells and the epidermis. If the skin is oily, water and predominantly hydrophobic particles will tend to penetrate and concentrate between the dead skin cells and the epidermis. If the dead skin cells are dry, water in the cosmetic will tend to be absorbed by the dead skin cells resulting in their swelling. The penetration and concentration of the hydrophobic and/or hydrophilic between dead skin cells and the epidermis tends to pry up and dislodge the dead skin cells from the epidermis. Swelling of dry dead skin cells also tends to mechanically dislodge the dead skin cells from the epidermis. When the cosmetic substance is removed from the skin, the dislodged dead ski
Fenster & Company
George Konata M.
Or-Le-Or Ltd.
Page Thurman K.
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