Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
2000-05-26
2003-02-25
Dees, Jose′ G. (Department: 1616)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S078030, C424S059000, C510S475000, C510S119000, C510S120000, C510S121000
Reexamination Certificate
active
06524594
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to gelled oil skin cleansing compositions, and to uses thereof. These compositions are not only effective, foaming cleansers, but they also leave a light, moisturizing feel to the skin after rinsing.
2. Description of the Prior Art
Cleansing the skin results, irrespective of the surfactants added, in swelling of the horny layers, with water-soluble constituents of dirt being washed off and substances endogenous to the skin being washed out. During this process, naturally occurring skin fats are also dissolved and removed, making it necessary to replenish the skin with these or subsidiary protective factors.
For this purpose, oil preparations are used as bath or shower preparations in the art. Typically, these preparations are provided as single-phase systems which, on contact with water, form an emulsion or a full solubilizate as opposed to dividing out into two phases. As a result of the formation of an emulsion, the skin is, during the cleansing operation, better cared for with the preferred oils than in two-phase systems.
Surfactant-containing oil preparations for use as cosmetic or dermatological shower oils are well-known in the art. For example, DE 4424210 C2 uses a composition containing at most 55 percent of surfactants comprised of various anionic and nonionic surfactants as well as at least 45 percent of a selection of oil components, with triglycerides being particularly preferred.
DE 19835239.5 also provides for a single-phase foaming oil composition that is non-irritative to the skin, mucosa, and eyes comprised of an anionic surfactant, a zwitterionic surfactant, or mixture thereof; a nonionic surfactant; an alkyl phosphate; and an oil component wherein the proportion of surfactant is from 15 percent to 50 percent and that of the oil component is from 50 percent to 85 percent.
U.S. Pat. No. 4,707,293, which uses a composition consisting essentially of: a) an animal, vegetable, mineral or synthetic oil; and b) from 2 percent to 20 percent of a mixture of a saccharose ester and at least one other emulsifying agent, claims to provide an effective cleanser that also leaves a protecting lipid layer on the skin.
Disadvantageously, many of the known surfactant-containing preparations often produce little to no foam, fail to leave a perceived amount of moisturizing residue on the skin, and/or are not significantly stable in a gelled form, a preferred mode of use for users of these products.
When formulating an oil preparation, particular care should be taken when it is used by people who suffer from diseases such as atopic eczema as well as those people whose skin requires special care, thus, for example, as a result of damage caused by the environment, irritation, light damage, and aging skin.
It would be desirable to have an effective, non-irritating cleansing composition that not only was stable in the preferred gel form, but also, after rinsing, left a non-greasy, moisturizing residue on the skin.
SUMMARY OF THE INVENTION
In accordance with this invention, there is provided a gelled detergent composition comprising:
a) a surfactant portion comprising at least one ionic surfactant;
b) an oil;
c) a gelling agent; and
d) a nonionic emulsifier.
Another embodiment of the present invention is directed to a method for producing a gelled detergent composition comprising:
a) combining a gelling agent with a nonionic emulsifier to form a first mixture;
b) adding a surfactant to the first mixture to form a second mixture;
c) adding the second mixture to a third mixture comprised of an oil.
When the gelled composition of the present invention is applied to the skin in the presence of water, the composition produces a cleansing foam. When the product is rinsed off of the skin, a light oil residue remains on the skin, which provides the user with a moisturized “after-feel.”
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patent: 4424210 (1997-08-01), None
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European Search Report dated Jul. 27, 2001 for European Patent Application No. EP 00 30 5281.
U.S patent application Ser. No. 09/762,177 (J&J 1755).
Hopkins John
McCulloch Laura J.
Santora Delores M.
Dees Jose′ G.
Haghighatian M.
Harriman Erin M.
Johnson & Johnson Consumer Companies Inc.
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