Drug – bio-affecting and body treating compositions – Anti-perspirants or perspiration deodorants
Reexamination Certificate
2002-04-23
2004-04-13
Dodson, Shelley A. (Department: 1616)
Drug, bio-affecting and body treating compositions
Anti-perspirants or perspiration deodorants
C424S066000, C424S068000, C424S078020, C424S078030, C424S400000, C424S401000, C424S725000
Reexamination Certificate
active
06719966
ABSTRACT:
TECHNICAL FIELD
The present invention relates to personal care antiperspirant and/or deodorant compositions, and particularly relates to cream, soft solid or solid antiperspirant/deodorant compositions which are applied topically to the skin.
BACKGROUND OF THE INVENTION
Deodorant and antiperspirant compositions are well-accepted and popular components of personal care and personal hygiene regimens. As a supplement to the periodic bathing of the body, these compositions counteract odors and prevent perspiration which can occur on the body between times that the body is washed. Deodorant and antiperspirant compositions are generally applied topically to the skin, for example in the underarm area, and there are a wide variety of composition types which can be used to do this. For example, solid sticks, soft solids, liquid roll-ons, cream compositions, and gel compositions, are but some of the forms which deodorant and antiperspirant compositions can take. The feel of a particular composition as it is applied to the skin (i.e., its perceived wetness and tackiness, as well as the smooth feeling which it leaves on the skin) is very important to the user and is frequently a determining factor in whether that composition will be re-purchased in the future.
The primary consumer benefit of an antiperspirant or deodorant product is clearly its antiperspirant or deodorant efficacy. However, in addition to such primary efficacy, the fact that a composition does not leave a white residue on the skin or clothing and also provides good skin feel are two very important cosmetic benefits of an antiperspirant or deodorant product. In addition to these residue and skin comfort issues, extrudable and solid stick antiperspirant and/or deodorant compositions typically formulated may also develop syneresis or “creep” of their volatile components. That phenomenon leaves an oily film on the dispensing container.
It would be very useful to have an efficacious antiperspirant or deodorant composition, formulated as a cream, soft solid or solid composition, based on a homogeneous wax-liquid matrix, which minimizes syneresis or creep, provides skin smooth emolliency and conditioning, provides good skin feel with minimized visible residue on the skin, and can permit easier shaving with less irritation. The present invention permits the incorporation of water (for example, that included in an aqueous-based botanical extract or other functional additive) into an anhydrous antiperspirant/deodorant system. This result is obtained, as described herein, by formulating a liquid antiperspirant/deodorant composition which includes an antiperspirant or deodorant active, a volatile fluid, a wax structurant, a C
6
-C
45
alkyl-substituted polydimethylsiloxane, and a botanical extract (preferably a water-based botanical extract, such as ginger root extract).
U.S. Pat. No. 5,939,056, Fletcher, et al., issued Aug. 17, 1999, described substantially anhydrous cream antiperspirant/deodorant compositions which include an antiperspirant active, a carrier (such as a volatile silicone), a silica structurant, a C
14
-C
22
alkyl methicone wax and, optionally, a wax structurant. The compositions are said to have improved efficacy and sensory properties. The compositions are substantially anhydrous and do not include water or water-based materials, such as water-based botanical extracts.
U.S. Pat. No. 5,976,514, Guskey, et al., issued Nov. 2, 1999, describes low irritation antiperspirant compositions which may be formulated as soft solid or solid sticks. The compositions may contain an antiperspirant active, a volatile, nonpolar hydrocarbon liquid (such as an Isopar material), and a skin irritation mitigating material (one example of which is taught to be C
24
-C
28
alkyl methicone). Example 10 describes a solid composition containing 37.5% D5 cyclomethicone, 20% of an antiperspirant active, 5% of a silicone wax, 2.9% hydrogenated castor wax, 0.18% silica, 0.18% polyethylene, and 0.075% behenyl alcohol. The compositions are anhydrous; they do not contain any water-based material, and particularly do not contain botanical extracts.
U.S. Pat. No. 6,258,365 B1, LeGrow, et al., issued Jul. 10, 2001, describes gelled silicone materials for use in personal care products, such as antiperspirants. The silicone material includes a mixture of short chain alkylsiloxane materials together with alkyl silicone waxes, such as C
24
-C
28
alkyl dimethicone.
U.S. Pat. No. 4,937,069, Shin, issued Jun. 26, 1990, describes semi-solid antiperspirant compositions which are said to be easily dispensed and exhibit good skin feel. The compositions may contain an antiperspirant active, a fumed silica thickening agent, a thickening/solid emollient (for example waxes, such as stearyl wax), a nonvolatile liquid emollient, and a volatile emollient, such as cyclomethicone. The disclosed compositions do not contain an alkyl-substituted polydimethylsiloxane material.
U.S. Pat. No. 5,531,986, Shevade, et al., issued Jul. 2, 1996, describes low residue antiperspirant solid stick compositions which may include an antiperspirant active, a volatile silicone fluid (such as cyclomethicone), a nonvolatile silicone fluid, dimethicone copolyol, a high melting point wax and a low melting point wax. The disclosed compositions do not include an alkyl-substituted polydimethylsiloxane.
U.S. Pat. No. 6,261,543 B1, Fletcher, et al., issued Jul. 17, 2001, describes antiperspirant emulsions which utilize a hydratable starch polymer to provide phase stability. The compositions may include cyclomethicone, C
10
-C
30
alcohols and silica.
U.S. Pat. No. 5,932,199, Esser, issued Aug. 3, 1999, describes anhydrous antiperspirant stick compositions which may include an antiperspirant active, a carrier for the active (such as cyclomethicone), a structurant (such as C
8
-C
30
alcohol), moisturizing cream, and a perfume carrier material (such as fumed silica). The compositions are not taught to include alkyl-substituted polydimethylsiloxanes or water-containing materials, such as botanical extracts.
U.S. Pat. No. 5,254,332, Grezcyn, et al., issued Oct. 19, 1993, describes antiperspirant compositions which may include a volatile silicone oil, such as cyclomethicone, a water insoluble liquid emollient (for example, diisopropyl adipate), a low melting point wax (for example, C
8
-C
30
fatty alcohol), a coupling agent (such as PPG ethers of C
10
-C
20
alcohols), an antiperspirant active and a deodorant active (such as sodium bicarbonate). The compositions are substantially anhydrous and are not taught to include alkyl-substituted polydimethylsiloxanes.
U.S. Pat. No. 5,292,530, McCrea, et al., issued Mar. 8, 1994, describes anhydrous antiperspirant compositions which can include an antiperspirant active, a volatile liquid carrier (such as cyclomethicone), a finely divided silica, and a suspending wax. The compositions are taught to provide good cosmetic properties with reduced syneresis. Once again, the compositions are substantially anhydrous and are not taught to include alkyl-substituted polydimethylsiloxanes.
U.S. Pat. No. 5,885,559, Lee, et al., issued Mar. 23, 1999, describes antiperspirant compositions in the form of a cream or soft solid which can comprise an antiperspirant active, a volatile silicone (such as cyclomethicone), a linear chain silicone, and a hexanediol-behenyl beeswax gelling agent. The composition is taught to eliminate the need for conventional gelling agents, such as fatty alcohols or hydrogenated castor oil.
U.S. Pat. No. 6,171,581 B1, Joshi, et al., issued Jan. 9, 2001, describes antiperspirant compositions in the form of a solid or soft solid water and oil emulsion. The compositions can include a silicone elastomer, a gellant, an antiperspirant active, water, and oil. While the silicone elastomer component is broadly defined, it does not include alkyl-substituted polydimethylsiloxanes. The gellant material disclosed may include behenyl alcohol; the oil may be a cyclomethicone.
U.S. Pat. No. 5,916,546, Sawin, et al., issued Jun. 29, 1999, describes antiperspirant st
Andrew Jergens Company
Dodson Shelley A.
Frost Brown Todd LLC
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