Gel deodorant compositions having reduced skin irritation

Details Gel deodorant compositions having reduced skin irritation Gel deodorant compositions having reduced skin irritation

1998-05-01

2001-01-16

Dodson, Shelley A. (Department: 1616)

Drug, bio-affecting and body treating compositions

Anti-perspirants or perspiration deodorants

C424S066000, C424S067000, C424S068000, C424S400000, C424S401000, C424SDIG005

Reexamination Certificate

active

06174521

ABSTRACT:

FIELD OF INVENTION
The present invention relates to gel deodorant compositions which provide reduced skin irritation. In particular, the present invention relates to gel deodorant compositions which contain a gellant, deodorant active or fragrance, and a select combination of a polymeric and nonpolymeric alcohols.
BACKGROUND OF THE INVENTION
Topical deodorants have been formulated in a variety of forms and are intended for topical application to human skin to mask or prevent malodors associated with human perspiration. These topical deodorants are typically applied topically to the underarm or other area of the skin in the form of soft deodorant gels or sticks. These product forms typically contain a gelling agent, solvent, and perfume or antimicrobial active.
Fatty acid soaps are commonly used as gelling agents in topical deodorant gels, examples of which include include sodium or potassium salts of naturally occurring fatty acids. The gelling agent is generally used in combination with a highly polar alcohol solvent to provide aesthetics such as clarity, ease of application, cool and refreshing feel on application, lack of powdery residue, and dry feel. Monohydric and dihydric alcohols, especially propylene glycol and dipropylene glycol, are often used for this purpose.
Many types of gel deodorant formulations are known, including those which comprise fatty acid salts and a solvent such as water, monohydric alcohols, or dihydric alcohols. A typical example of such a formulation are the alcohol-containing gels which comprise a fatty acid salt or other similar gellant, triclosan or other deodorant active, and a polar solvent such as ethanol, propylene glycol, dipropylene glycol or other higher molecular weight polypropylene glycols. Although these alcohol-containing deodorant gels are quite popular and commonly used, many are also harsh to the skin and can cause excessive skin irritation after topical application.
It is therefore an object of the present invention to provide an alcohol-containing gel deodorant composition which is milder to the skin and which causes little or no skin irritation, and further to provide such a composition containing a select ratio a polymeric alcohol and nonpolymeric alcohols. It is a further object of the present to provide such a composition having improved dry feel and other cosmetic benefits such as ease of application, emolliency, fragrance longevity, and/or reduced visible residue.
SUMMARY OF THE INVENTION
The present invention is directed to gel deodorant compositions comprising from about (a) from about 0.001% to about 50% by weight of a deodorant active, fragrance, or combination thereof; (b) from about 0.01% to about 20% by weight of a gellant; (c) from about 5% to about 90% by weight of a polymeric alcohol having at least one free hydroxyl group, and also having from about 2 to about 80 alkoxylate radicals each having from about 2 to about 6 carbon atoms; (d) from about 5% to about 90% by weight of a nonpolymeric alcohol having at least two free hydroxyl groups, and also having from about 3 to about 20 carbon atoms, wherein the weight ratio of the polymeric alcohol to nonpolymeric alcohol is from about 18:1 to about 1:5; (e) from zero percent to about 10% by weight of glycerin; and (f) from about 0.01% to about 89% by weight of water.
It has been found that the gel deodorant compositions of the present invention are milder to the skin and are associated with little or no skin irritation. These compositions also remain substantially clear or translucent over extended periods of time, and provide improved cosmetic benefits such as dry feel, ease of application, emolliency, deodorant efficacy, fragrance longevity, and/or no powdery residue.
DETAILED DESCRIPTION
The gel deodorant compositions of the present invention comprise as essential ingredients a gellant, a polymeric alcohol, an nonpolymeric alcohol, and a perfume and/or deodorant active. These gel deodorant compositions are intended for topical application to the underarm or other suitable areas of the skin. The gel deodorant compositions are preferably in the form of solid or soft solid sticks, but can also be formulated in a variety of non-stick formulations suitable for application to the underarm or other area of the skin.
The term “ambient conditions” as used herein refers to surrounding conditions under about one (1) atmosphere of pressure, at about 50% relative humidity, at about 25° C.
The gel deodorant compositions of the present invention can comprise, consist of, or consist essentially of the essential elements and limitations of the invention described herein, as well as any of the additional or optional ingredients, components, or limitations described herein.
All percentages, parts and ratios are by weight of the total composition, unless otherwise specified. All such weights as they pertain to listed ingredients are based on the active level and, therefore, do not include solvents or by-products that may be included in commercially available materials, unless otherwise specified.
Deodorant Active and Fragrance
The gel deodorant composition of the present invention comprises a deodorant active, fragrance or combination thereof, which includes deo-fragrances, at concentrations ranging from about 0.001% to about 50%, preferably from about 0.01% to about 20%, more preferably from about 0.1% to about 10%, by weight of the composition. These deodorant actives and perfumes include any known or otherwise safe and effective deodorant or fragrance suitable for topical application to human skin.
Unless otherwise specified, the term “active” as used herein refers generally to deodorant actives, deo-fragrances or fragrances, whereas the term “deodorant active” specifically refers to topical materials which can prevent or eliminate malodors resulting from perspiration. The term “fragrance” as used herein specifically refers to any topical material which covers or masks malodors resulting from perspiration, or which otherwise provides the composition with the desired perfumed aroma.
a) Deodorant Active
Deodorant actives suitable for use in the gel deodorant composition includes any topical material that is known for or is otherwise effective in preventing or eliminating malodor associated with perspiration. These deodorant actives are typically antimicrobial agents (e.g., antibacterial agents, antifungal agents), malodor-absorbing material, or combinations thereof
Preferred deodorant actives are antimicrobial agents, non-limiting examples of which include cetyl-trimethylammonium bromide, cetyl pyridinium chloride, benzethonium chloride, diisobutyl phenoxy ethoxy ethyl dimethyl benzyl ammonium chloride, sodium N-lauryl sarcosine, sodium N-palmethyl sarcosine, lauroyl sarcosine, N-myristoyl glycine, potassium N-lauryl sarcosine, trimethyl ammonium chloride, sodium aluminum chlorohydroxy lactate, triethyl citrate, tricetylmethyl ammonium chloride, 2,4,4′-trichlorio-2′-hydroxy diphenyl ether (triclosan), 3,4,4′-trichlorocarbanilide (triclocarban), diaminoalkyl amides such as L-lysine hexadecyl amide, heavy metal salts of citrate, salicylate, and piroctose, especially zinc salts, and acids thereof, heavy metal salts of pyrithione, especially zinc pyrithione, zinc phenolsulfate, farnesol, and combinations thereof.
Preferred deodorant actives are triclosan, triclocarban and combinations thereof, wherein the preferred concentration of either triclosan or triclocarban ranges from about 0.01% to about 1.0%, more preferably from about 0.1% to about 0.5%, even more preferably from about 0.1% to 0.3%, by weight of the composition, and wherein the total concentration of triclosan and triclocarban when used together in a composition ranges from about 0.01% to about 2.0%, more preferably from about 0.2% to about 1.0%, even more preferably from about 0.2% to about 0.6%, by weight of the composition. It has been found that the combination of these two deodorant actives provides a deodorant efficacy that exceeds the cumulative deodorant efficacy that one would otherwise predict fro

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