Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
1998-04-15
2001-07-17
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S061000, C424S063000, C424S062000
Reexamination Certificate
active
06261576
ABSTRACT:
FIELD OF THE INVENTION
Embodiments of the present invention relate to long-lasting liquid color formulations for application to the skin and methods for manufacturing such formulations.
DESCRIPTION OF THE RELATED ART
Colorant materials have been used for many years to highlight the lips and other skin regions on the body. Most conventional lipstick formulations have a semisolid consistency, and include a colorant such as a pigment mixed with an oily vehicle such as a fat or oil stiffened to a desired consistency with one or more waxes. In recent years, attempts have been made to provide a lipstick having a long lasting color, in order to lessen the need for frequent reapplication and to avoid problems such as the lipstick rubbing off of the lips and onto clothing.
One type of lipstick formulation increases the concentration of the colorant in an effort to obtain long lasting color. However, increasing the concentration of the colorant can cause the lipstick to become too dry on the lips. Moisturizers and conditioning agents can be added to the formulations, but these components are not durable and can adversely affect the appearance of the lipstick on the lips.
Another type of lipstick formulation includes a ceramide component. Ceramides are a group of lipids, members of which are found in the epidermis of mammals. Chemically, ceramides are N-acrylated sphingosine bases. Ceramide lipstick formulations also typically contain hydrocarbon waxes. Such formulations may provide some improvement, but even longer wear lipstick formulations are desirable.
Colorants used for application to skin other than the lips, such as tattoos on the arms, may be injected into the skin in order to form a permanent tattoo. Other colorant formulations (like magic marker ink) may be used to stain the skin for a relatively short time period, for example, a few hours. It would be desirable to be able to color the skin for a longer time period, while at the same time not permanently staining the skin.
SUMMARY
Embodiments of the present invention provide a liquid lipstick composition including effective amounts of an acrylates/octylacrylamide copolymer, a cellulose material, and at least one alcohol. The cellulose material may be hydroxypropylcellulose. One or more colorant materials may be included in the composition, and other additives may be added to enhance properties such as the feel of the composition on the lips. Additional additives such as fragrance and botanical extracts may also be added. Such compositions can be easily applied to the lips and offer long wear characteristics.
Embodiments of the present invention also include a method for forming a liquid lipstick composition. An acrylates/octylacrylamide copolymer is mixed with alcohol to form a first solution. A cellulose material is mixed with alcohol to form a second solution. A colorant is provided, and the solutions and colorant are mixed together.
Other embodiments include a liquid colorant composition for coloring skin. The composition includes effective amounts of an acrylates/octylacrylamide copolymer, a cellulose material, at least one alcohol and a colorant. Such embodiments may be used, for example, to form long-wearing but temporary tattoos.
Other embodiments include a method for applying a colorant to the lips. A liquid lipstick composition including an acrylates/octylacrylamide copolymer, a thickener, a colorant and at least one alcohol is provided. The liquid lipstick composition is applied to the lips and a gloss composition is applied over the liquid lipstick composition.
Yet other embodiments include a method for applying a liquid colorant composition to skin. The method includes providing a liquid composition including an acrylates/octylacrylamide copolymer, a cellulose material, at least one alcohol, and a colorant. A stencil is provided, the stencil having a cut out design through which skin is exposed. The stencil is placed over skin, and the liquid composition is applied to the skin through the stencil.
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Howard S.
Konrad Raynes & Victor LLP
Page Thurman K.
Raynes Alan S.
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