Deodorant compositions containing specific piroctone salts and perfumes

Deodorant compositions comprising piroctone acid, its nonprimary olamine salts, metal salts and combination thereof; and a perfume which contains high concentrations of aldehydes and/or ketones are disclosed. These deodorants have good cosmetics, have minimized component interactions, and are excellent in the prevention of body malodors.

TECHNICAL FIELD 
The present invention relates to effective body deodorant compositions 
having minimized negative interactions between the antimicrobial component 
and the aldehyde and ketone-containing perfumes utilized in the 
compositions. 
BACKGROUND OF THE INVENTION 
Human body malodors are believed to be partly created by bacterial attack 
on sweat gland secretions, which results in production of pungent fatty 
acids. To combat such malodors, soaps are used to cleanse the axilla 
(underarm area) of these odor-causing fatty acids and reduce the amount of 
bacteria found there. Although fatal to most, some bacteria survive the 
washing process and immediately start the production of malodors again. 
Antimicrobial ingredients are frequently incorporated into treatments 
(e.g., soap bars or deodorants) which can be applied during or after 
washing to destroy bacteria which survive washing with soap alone. Among 
the antimicrobials used to combat bacterial growth are Octopirox, 
Triclosan, and Chlorhexidine; see Cosmetic and Drug Preservation (edited 
by J. Kabara 1984) 620-623. In general, however, even antimicrobial 
ingredients are not totally effective, in preventing formation of 
malodors. It is for this reason that perfumes historically have played an 
important role in deodorancy. 
Perfumes generally provide some deodorancy by creating interference with 
the reception of malodors by the nose. U.S. Pat. No. 4,304,679, Hooper, 
issued Dec. 8, 1981; U.S. Pat. No. 4,322,308, Hooper, issued Mar. 30, 
1981; and U.S. Pat. No. 4,477,361, Sperti, issued Oct. 16, 1984; teach 
that some perfumes, notably those having high levels of certain aldehyde 
and ketone components, can be used to neutralize or inhibit the 
development of body odors. 
The combination of antimicrobials and perfumes, however, provides excellent 
deodorancy as it utilizes both mechanisms in one treatment to deter the 
development of malodors. This combination of antimicrobials and perfumes 
in deodorants is well known in the art; see "Antiperspirants and 
Deodorants", 2 Cosmetics, Science and Technology 400-410 (M. Balsam and E. 
Sagrin; editors, 1972); "Deodorant & Antiperspirant Formulary", 100 
Cosmetics and Toiletries 65-68 (Dec. 1985); and Midwood, Perfuming 
Deodorants/Antiperspirants, 52 Soap Cosmetics Chemical Specialties 48, 50, 
66 (Sept. 1976). 
Japanese Laid Open Patents 58-0222010, published Dec. 23, 1983, and 
60-023310, published Feb. 5, 1985, both to Lion, describe the use of 
hydroxy pyridone compounds, specifically the salts of piroctone acid, in 
deodorant compositions to combat production of malodors by the body. These 
compositions may include perfumes along with other conventional 
ingredients. 
The most commonly used salts of piroctone acid (i.e., the primary olamine 
salts), such as Octopirox, interact negatively with perfumes which have 
significant concentrations of aldehydes and ketones. This is a particular 
problem since it is this interaction which blocks the ability of the 
aldehyde- and ketone-containing perfume components to inhibit the 
development of body odors. 
It has now surprisingly been found that certain forms of piroctone acid do 
not interact negatively with perfume aldehydes and ketones. This invention 
thus describes specific piroctone salts which, when combined with a 
perfume containing high concentrations of aldehydes and ketones, form 
effective deodorant compositions. The deodorant compositions herein may be 
incorporated into products which may benefit from the use of an 
antimicrobial/perfume combination. Such products include laundry 
detergents, catamenials, bar soaps, bath gels, and personal deodorants. 
Personal body deodorants may take the form of a solid, cream or liquid. 
These deodorant forms are delivered to the body via a variety of devices 
such as, canisters with elevating devices which hold a free standing solid 
product (sticks), aerosol sprays, pump sprays, and liquid applicators. 
All percentages and ratios herein are by weight unless otherwise indicated. 
SUMMARY OF THE INVENTION 
The present invention provides a deodorant composition, comprising: 
(a) from about 0.1% to about 1.0% of an antimicrobial ingredient selected 
from the group consisting of piroctone acid, metal salts of piroctone 
acid, secondary and tertiary olamine salts of piroctone acid, and mixtures 
thereof; and 
(b) from about 0.01% to about 7% of a perfume comprising from about 5% to 
about 50% of aldehydes and ketones (the preferred aldehyde being hexyl 
cinnamic aldehyde). 
These deodorant compositions may be formulated into a variety of personal 
deodorant products, such as cosmetic sticks, sprays and body 
lotions/splashes. This invention also provides methods for treatment or 
prevention of malodors produced by the body.

DETAILED DESCRIPTION OF THE INVENTION 
The components utilized in the present invention are described in detail 
below. 
Antimicrobial Ingredient 
To make an effective deodorant composition only certain forms of piroctone 
can be combined with ketone- and aldehyde-containing perfumes. The forms 
of piroctone used in the present invention include piroctone acid, metal 
salts of piroctone acid (such as the aluminum, sodium, potassium, 
zirconium, calcium and zinc metal salts), secondary and tertiary olamine 
salts of piroctone acid (such as the diethanolamine and triethanolamine 
salts), and mixtures thereof. The primary olamine salt of piroctone acid 
(known commercially as Octopirox) is not useful in the present invention 
since it interacts negatively with the aldehyde and ketone components 
contained in the perfume. 
Piroctone compounds useful in this invention contain the basic 
1-hydroxy-2-pyridone structure: 
##STR1## 
wherein R.sup.1 is selected from C.sub.1 -C.sub.17 hydrocarbon radicals, 
R.sup.2 is selected from C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkenyl 
or alkynyl, hydrogen, phenyl or benzyl, and M is selected from hydrogen; 
metals including aluminum, calcium, potassium, sodium, zinc, and 
zirconium; diethanolamine (herein DEA) and triethanolamine (herein TEA). 
These piroctone materials are described in detail in Japanese Laid Open 
Patent 58-0222010, issued Dec. 23, 1983, and Cosmetic and Drug 
Preservation (edited by J. Kabara 1984) 742-743, both of which are 
incorporated herein by reference. Preferred R.sup.1 group is 
(CH.sub.3).sub.3 CCH.sub.2 CH(CH.sub.3)CH.sub.2 -- and a preferred R.sub.2 
is methyl. Particularly preferred antimicrobials in this invention include 
piroctone acid, the sodium and potassium salts of piroctone acid, DEA and 
TEA salts of piroctone acid, and mixtures thereof. The piroctone 
antimicrobial comprises from about 0.1% to about 1.0%; preferably from 
about 0.2% to about 0.6%, of the deodorant composition. 
Perfume 
The perfume is an important component of the deodorant compositions defined 
by this invention. The compositions of the present invention contain from 
about 0.01% to about 7%, preferably about 1% to about 4%, of the 
specifically-defined perfume. Aldehydes and ketones must comprise from 
about 5% to about 50% of the perfume. 
As disclosed in U.S. Pat. No. 4,322,308, Hooper et al., issued Mar. 30, 
1982, and U.S. Pat. No. 4,304,679, Hooper et al., issued Dec. 8, 1981, 
both incorporated herein by reference, perfume components generally 
include, but are not limited to, phenolic substances (such as iso-amyl 
salicylate, benzyl salicylate, and thyme oil red); essence oils (such as 
geranium oil, patchouli oil, and petitgrain oil); extracts and resins 
(such as benzoin siam resinoid and opoponax resinoid); "synthetic" oils 
(such as Bergamot 37 and 430, Geranium 76, and Pomeransol 314); aldehydes 
and ketones (such as B-methyl naphthyl ketone, p-t-butyl-A-methyl 
hydrocinnamic aldehyde and p-t-amyl cyclohexanone); polycyclic compounds 
(such as Coumarin and B-naphthyl methyl ether); esters (such as diethyl 
phthalate, phenylethyl phenylacetate, and non-anolide-1:4); and alcohols 
(such as dimyrcetol, phenylethyl alcohol and tetrahydromuguol). In order 
to achieve the desired deodorant characteristics, the perfumes used in the 
present invention include relatively high levels of the aldehyde and 
ketone components. Examples of such components useful in perfumes herein 
include decyl aldehyde, undecyl aldehyde, undecylenic aldehyde, lauric 
aldehyde, amyl cinnamic aldehyde, ethyl methyl phenyl glycidate, methyl 
nonyl acetaldehyde, myristic aldehyde, nonalactone, nonyl aldehyde, octyl 
aldehyde, undecalactone, hexyl cinnamic aldehyde, benzaldehyde, vanillin, 
heliotropine, camphor, para-hydroxy phenolbutanone, 6-acetyl 1,1,3,4,4,6 
hexamethyl tetrahydronaphthalene, alpha-methyl ionone, gamma-methyl 
ionone, and amylcyclohexanone and mixtures of these components. 
The perfume conponents may be combined by those skilled in the perfumery 
arts to create a wide variety of fragrances. However, as described herein, 
all of the perfumes should contain relatively high levels of aldehydes 
and/or ketones, because it is these components which, when appropriately 
formulated, can inhibit development of body odors. An example of the type 
of perfume formulation useful in the deodorant compositions of the present 
invention follows. 
______________________________________ 
Component Weight % 
______________________________________ 
Ambrox 2.51 
Benzambre II 30024 (Noville) 
5.50 
Benzyl Salicylate 5.01 
Bouquet RS-14 3.51 
Coumarin 2.16 
Geranium Bourbon 3.51 
Hexyl Cinnamic Aldehyde 
10.00 
Iso Eugenol 1.50 
La Moss 26657 7.00 
Linalyl Acetate 5.01 
Menthol 5.66 
Musk Xylol 2.51 
Patchouli Oil 4.01 
Sandalwood 2.81 
6-acetyl 1,1,3,4,4,6 hexamethyl 
11.50 
tetrahydronaphthalene 
Galaxolide 50% Q.S. to 100.00 
______________________________________ 
This composition contains about 10% of aldehyde and about 11% of ketone 
components. It will be appreciated that many other formulation variations 
are possible, as long as the required level of aldehyde/ketone is met. 
It is particularly preferred that the aldehyde is hexyl cinnamic aldehyde. 
Preferred perfume compositions contain from about 5% to about 50% of hexyl 
cinnamic aldehyde. U.S. Pat. No. 4,477,361, Sperti et al., issued Oct. 16, 
1984, and U.S. Pat. No. 4,304,679, Hooper et al., issued Dec. 8, 1981, 
describe a variety of perfumes which can include hexyl cinnamic aldehyde. 
The deodorant compositions of the present invention may be manufactured in 
a variety of product forms, such as those described below. 
Stick Deodorants 
The deodorant compositions described in this invention may be formulated as 
deodorant sticks. Soap-based cosmetic sticks are described in U.S. Pat. 
No. 2,857,315, Teller, issued Oct. 21, 1958, and U.S. Pat. No. 2,900,306, 
Slater, issued Aug. 18, 1959, both of which are incorporated herein by 
reference. These sticks utilize soap as a gelling agent to form a firm gel 
matrix with good consumption characteristics. 
The stick deodorants herein contain a gelling agent selected from, for 
example, sodium and potassium salts of fatty acids containing from about 
12 to 18 carbon atoms (i.e., soaps). Most preferred is the sodium salt of 
stearic acid. These gelling agents generally comprise from about 3% to 
about 10%, preferably from about 4% to about 8%, of the stick composition. 
Another essential component of the stick is a polyhydric alcohol which 
solubilizes the gelling agent, allowing the medium to gel. Examples of 
suitable polyhydric alcohols for use herein include ethylene glycol, 
propylene glycol, dipropylene glycol, trimethylene glycol, butylene 
glycol, hexylene glycol, glycerine, and mixtures thereof. Most preferred 
is dipropylene glycol. The polyhydric alcohol herein preferably comprises 
from about 5% to about 90%; preferably from about 10% to about 90%; and 
most preferably from about 10% to about 80% of the stick's composition. 
Optional components for use in deodorant sticks include a variety of 
ingredients to improve composition, efficacy, stability, cosmetics, and 
aesthetics. Such optional components include, for example, monohydric 
alcohols, coupling agents, dyes, pigments, coloring agents, emollients, 
alcohol evaporation retardants, and water. 
Monohydric alcohols, used at levels of from about 0% to about 70%, 
preferably from about 5% to about 70% of the composition, impart cosmetic 
advantages such as cool feel to the skin and a strong scent which confirms 
the deodorant's presence to the user. Suitable monohydric alcohols include 
methanol, ethanol, isopropanol, and mixtures thereof; preferred is 
ethanol. 
Coupling agents, also known as emulsifiers, as used herein, means any 
compound or composition which acts to bring polar, intermediate polar and 
non-polar components of the stick composition into a homogenous mixture. 
The deodorant stick's coupling agents include, for example, polyethylene 
glycol (PEG), polypropylene glycol (PPG), and the PEG/PPG ethers of 
C.sub.4 -C.sub.22 (preferably C.sub.10 -C.sub.20) fatty alcohols; the most 
preferred is PPG-3 myristyl ether. The emulsifier comprises from about 5% 
to about 60%, preferably from about 10% to about 50%, and most preferably 
from about 15% to about 30%, of the stick composition. 
Dyes, pigments and coloring agents may be used to achieve an aesthetically 
pleasing appearance and reinforce the product's concept goals. The dyes 
selected are those ceritified for use in drugs and cosmetic products. Said 
dyes, pigments and coloring agents generally comprise from about 1 ppm to 
about 10 ppm of the finished composition. 
An emollient may be included to provide lasting dry feel to the skin and 
reduce tackiness. These emollients are, for example, selected from the 
group consisting of volatile and nonvolatile silicones; fatty alcohols; 
esters formed by the reaction of C.sub.3 -C.sub.18 fatty alcohols with 
C.sub.3 -C.sub.18 fatty acids, such as di-isopropyl adipate, isopropyl 
myristate, isopropyl palmitate, glycerol monostearate, and C.sub.12 
-C.sub.15 alcohol lactates; preferred are the volatile silicones, such as 
cyclomethicone. The emollient comprises from about 10% to about 30% of the 
composition. 
To prevent shrinkage of the stick resulting from the loss of alcohols, 
alcohol evaporation retardants may be included in the formula. These are 
generally polyhydric alcohols, such as glycerine, sorbitol, and mixtures 
thereof. 
Finally, water may be added to assist in incorporation of dry materials 
into the soap/gel phase matrix. Water typically does not exceed 30% of the 
total weight of the stick. 
Liquid Deodorants 
The deodorants of the present invention may also be formulated as a liquid. 
Such deodorants may be incorporated in a variety of different delivery 
systems, including aerosol sprays, pump sprays, lotions, and splash ons. 
Aerosol sprays have gained wide consumer acceptance. These sprays typically 
are anhydrous systems comprising deodorant compositions which are 
homogeneously dispersed in a liquid solvent vehicle together with a 
liquified volatile propellant in a pressurized aerosol container. The 
liquid solvent vehicle is selected from the group which consists of 
monohydric alcohols, non-volatile solvents, water, and mixtures thereof, 
and comprises from about 10% to about 80%, preferably from about 50% to 
about 80%, of the final composition. 
The aerosol spray, created by rapid evaporation of the propellant upon 
dispensing from the atomizing valve, provides effective delivery of the 
deodorant composition to the targeted area. Useful aerosol containers are 
described in U.S. Pat. No. 3,083,917 and U.S. Pat. No. 3,083,918, 
Abplanalp et al., issued Apr. 2, 1963, and U.S. Pat. No. 3,544,258, 
Presant et al., issued Dec. 1, 1970, all of which are incorporated herein 
by reference. 
Propellants used in the aerosol sprays typically have a boiling point 
within the range from about -45.degree. C. to about 5.degree. C. The 
aerosol propellants are liquified when packaged in conventional aerosol 
containers under pressure. Aerosol propellants include chemically inert 
hydrocarbons, such as propane, n-butane, isobutane, and cyclopropane, and 
mixtures thereof, as well as halogenated hydrocarbons, such as 
dichlorodifluoromethane (propellant 12), 
1,1-dichloro-1,1,2,2-tetrafluoroethane (propellant 114), 
1-chloro-1,1-difluoroethylene (propellant 142-B), 1,1-difluoroethane 
(propellant 152-A), monochlorodifluoromethane (propellant 22), 
1-chloro-1,1-difluoro-2,2,2-trifluoroethane (propellant 115), and mixtures 
thereof, all of which are commercially available from E. I. DuPont 
deNemours and Co. Isobutane, used singly or admixed with other 
hydrocarbons, is preferred for use in the present aerosol deodorant 
composition. The propellant comprises from about 20% to about 50%, 
preferably from about 25% to about 40%, of the total weight of the 
composition. 
Although popular, deodorant aerosol sprays may present several cosmetic 
problems. For example, they may create a cooling sensation when applied to 
the skin, as well as a feeling of wetness once applied. In addition to the 
cosmetic considerations, the possible impact of the use of aerosol 
propellants on the environment has created momentum for the development of 
non-aerosol sprays. 
Non-aerosol sprays, also known as pump sprays, are well known in the art. 
See U.S. Pat. No. 4,053,581, Pader et al., issued Oct. 11, 1977; U.S. Pat. 
No. 4,065,564, Miles et al., issued Dec. 27, 1977; and U.S. Pat. No. 
4,073,880, Pader et al., issued Feb. 14, 1978; all of which are 
incorporated herein by reference. These patents describe liquid 
antiperspirant compositions which are suitable for use in pump sprays. The 
spray technology which is modified to include the antimicrobials and 
perfumes described above falls within the scope of the present invention. 
Except for the propellant, the pump spray deodorants utilize the same 
basic formula as the aerosol sprays. 
Other forms of the liquid deodorants include body lotions and splashes 
which may be delivered to the skin manually or through the use of an 
applicator system. Their formula is basically the same as that of the pump 
sprays, with the lotion having a slightly greater viscosity than the 
splash. Viscosity may be adjusted by incorporation of fillers such as 
silica, or use of high molecular weight polydimethylsiloxanes, such as 
dimethicone, as the non-volatile solvent vehicle. 
All of the liquid deodorants previously described in the present 
application contain a liquid solvent vehicle selected from the group 
consisting of monohydric alcohols, non-volatile solvents, water, and 
mixtures thereof. The non-aerosol liquid deodorants contain liquid solvent 
vehicle from about 65% to about 99%. Also, a variety of ingredients to 
improve consistency, efficacy, stability, cosmetics, and aesthetics of the 
deodorant product may be utilized. Such ingredients include, for example, 
coupling agents, dyes, pigments, coloring agents, emollients, and mixtures 
thereof. 
Monohydric alcohols are used herein as a liquid solvent vehicle which 
impart cosmetic advantages such as cool feel to the skin and strong scent 
confirming the deodorant's presence to the user. Examples of suitable 
monohydric alcohols include methanol, ethanol, isopropanol, and mixtures 
thereof; preferred is ethanol. The monohydric alcohol comprises from about 
10% to about 80%, preferably from about 15% to about 45% of the 
non-aerosol liquid deodorant compositions; and from about 50% to about 80% 
in the aerosol spray. 
The non-volatile solvent is a liquid solvent vehicle which slows the 
evaporation of the perfuming components in the deodorant composition after 
application. Suitable non-volatile solvents include non-volatile 
silicones, polyhydric alcohols, and mixtures thereof, and comprise from 
about 0% to about 50%, preferably from about 5% to about 30%, of the 
composition. 
The non-volatiles silicones used herein are polyorganosiloxanes with 
viscosity ranging from about 10 centistokes to about 350 centistokes. The 
basic monomer unit 
##STR2## 
may repeat in a linear arrangement or in a cyclic structure. Such silicone 
oils include polyalkylsiloxanes, polyalkylarylsiloxanes, and 
polyethersiloxane copolymers. Such polyalkylsiloxanes include the Vicasil 
series (sold by General Electric Company) and the Dow Corning 200 series 
(sold by Dow Corning Corporation). Polyalkylarylsiloxanes include 
polymethylphenylsiloxanes having viscosities from about 15 to about 65 
centistokes at 25.degree. C. These are available, for example, as SF 1075 
methylphenyl fluid (sold by General Electric Company) and 556 Cosmetic 
Grade Fluid (sold by Dow Corning Corporation). Preferred is dimethicone 
having a viscosity of about 100 centistokes. 
Preferred polyhydric alcohols useful in the present invention are selected 
from the group consisting of ethylene glycol, propylene glycol, 
dipropylene glycol, trimethylene glycol, glycerine, and mixtures thereof. 
Most preferred is dipropylene glycol. 
The last liquid solvent vehicle for use in the liquid deodorant is water. 
It is used to assist in incorporating dry materials into the deodorant 
liquid. Typically water will not exceed about 60% of the total 
compositions. 
Coupling agents, also known as emulsifiers, include any compound or 
compositions which act to bring polar, intermediate polar, and non-polar 
components of the deodorant composition into a homogeneous mixture. Such 
agents include, for example, polypropylene glycol (PPG), polyethylene 
glycol (PEG), and the PPG/PEG ethers of C.sub.4 -C.sub.22 (preferably 
C.sub.10 -C.sub.20) fatty alcohols; most preferred is PPG-3 myristyl 
ether. Emulsifiers or coupling agents comprise from about 0% to about 50%, 
more preferably from about 5% to about 35%, and most preferably from about 
8% to about 25%, of the liquid compositions. 
Dyes, pigments, and coloring agents are used to achieve an aesthetically 
pleasing appearance and reinforce the product concept goals. The dyes 
selected are those certified for use in drug and cosmetic products. Said 
dyes, pigments, and coloring agents comprise from about 1 ppm to about 10 
ppm of the composition. 
An emollient may be included to reduce tackiness and provide lasting dry 
feel to the skin. The emollient comprises from about 0% to about 50%, 
preferably from about 5% to about 30%, of the composition. These 
emollients are selected from the group consisting of volatile and 
non-volatile silicones; fatty alcohols; esters formed by the reaction of 
C.sub.3 to C.sub.18 fatty alcohols with C.sub.3 to C.sub.18 fatty acids, 
such as diisopropyl adipate, isopropyl myristate, isopropyl palmitate, 
glyceryl monostearate, and C.sub.12 -C.sub.15 alcohol lactates. 
Preferred emollients in this invention are volatile silicones which may be 
a series of cyclic or linear monomer units. A description of various 
volatile silicones is found in Todd, et al., "Volatile Silicone Fulids for 
Cosmetics", 91 Cosmetic and Toiletries, 27-32 (1976), incorporated herein 
by reference. Preferred volatile silicone oils include those having from 
about 1 to about 9 silicon atoms, preferably containing from about 4 to 
about 5 silicon atoms. Cyclic volatile silicones useful herein include 
those of the following formula: 
##STR3## 
wherein n=3 to 9. Linear volatile silicone oils include those of the 
formula: 
EQU (CH.sub.3).sub.3 Si--O--[Si(CH.sub.3).sub.2 --O].sub.n --Si(CH.sub.3) 
wherein n=1 to 9. Linear volatile silicones generally have viscosities of 
less than about 5 centistokes at 25.degree. C., whereas the cyclic 
silicones have viscosities of less than about 10 centistokes. Examples of 
volatile silicone oils useful in the present invention include: Dow 
Corning 344, Dow Corning 345 and Dow Corning 200 (sold by Dow Corning 
Corporation); 7207 and 7158 (sold by General Electric Company); and 
SWS-03314 (sold by SWS Silicones Corporation). Most preferred are the 
cyclic silicones with less than 6 monomer units, such as cyclomethicone. 
The processes for incorporating the deodorant compositions into various 
delivery systems, as well as the equipment used in such processes, are 
well known to those skilled in the art. They may be batch processes (i.e., 
involving discrete processing steps) or continuous processing (i.e., 
wherein the product composition is passed between processing steps in 
essentially continuous increments). 
Different processes are selected based upon the delivery system utilized. 
For example, making a liquid deodorant (other than the aerosol) requires 
no specific temperature conditions or order by which the components are 
combined. You may mix only the perfume and antimicrobial first and then 
add to the remainder of ingredients or just combine all the ingredients 
simultaneously. Similarly, the aerosol spray is prepared by combining all 
ingredients except propellant in an aerosol can and then adding the 
propellant under pressure. In contrast, sticks require specific processing 
temperatures to form the gel matrix. Normally, all stick ingredients, 
except for the perfume and color, are combined and heated from about 
80.degree. C. to about 95.degree. C. The mixture is then cooled to about 
70.degree. C. before adding perfume and color in order to avoid 
evaporation of the fragrance and color degradation during processing. 
The deodorant compositions described herein are utilized in conventional 
ways to treat or prevent the development of malodors in the axillary area 
of the human body. Specifically, an effective amount of the deodorant 
composition is applied topically to the axillary areas one or more times a 
day using any of the delivery systems previously described. When this is 
done, malodors are effectively prevented from developing without 
sacrificing good aesthetics upon application for the user. 
EXAMPLES 
The following nonlimiting examples illustrate the components and methods of 
the present invention. 
EXAMPLE 1 
A deodorant stick of the present invention is prepared as follows. All 
materials listed below, except for perfume and color, are combined in a 
vessel and heated to about 80.degree. C. to 95.degree. C. The solution is 
then cooled to about 70.degree. C., and the perfume and color are mixed 
in. The solution is then poured into a stick mold and allowed to solidify. 
______________________________________ 
Component Weight % 
______________________________________ 
Piroctone Acid 0.38% 
Perfume 1.40% 
(contains about 15% aldehydes 
and ketones, including hexyl 
cinnamic aldehyde) 
Sodium Stearate 7.00% 
Dipropylene Glycol 60.00% 
Propylene Glycol 27.00% 
Water 4.00% 
Color Solution (0.1% in water) 
0.22% 
______________________________________ 
EXAMPLE 2 
A deodorant stick of the present invention is prepared as described in 
Example 1. 
______________________________________ 
Component Weight % 
______________________________________ 
Sodium Piroctone 0.41% 
Perfume 1.40% 
(contains about 10% hexyl 
cinnamic aldehyde as the 
aldehyde/ketone component) 
Sodium Stearate 7.00% 
Propylene Glycol 70.00% 
Water 20.97% 
Color Solution (0.1% in water) 
0.22% 
______________________________________ 
EXAMPLE 3 
A deodorant stick of the present invention is prepared as described in 
Example 1. 
______________________________________ 
Component Weight % 
______________________________________ 
Piroctone Diethanolamine 
0.50 
Perfume 1.40 
(contains about 10% hexyl cinnamic 
aldehyde as the aldehyde/ketone 
component) 
Sodium Stearate 6.00 
Dipropylene Glycol 28.40 
PPG-3 Myristyl Ether 21.00 
Cyclomethicone 18.28 
Ethanol 24.00 
Color Solution (0.01% in water) 
0.42 
______________________________________ 
EXAMPLE 4 
A deodorant stick of the present invention is prepared as described in 
Example 1. 
______________________________________ 
Component Weight % 
______________________________________ 
Piroctone Triethanolamine 
0.50 
Perfume 1.40 
(contains about 10% hexyl cinnamic 
aldehyde as the aldehyde/ketone 
component) 
Sodium Stearate 6.00 
Propylene Glycol 12.00 
PPG-3 Myristyl Ether 28.00 
PPG-10 Cetyl Ether 10.00 
Cyclomethicone 33.68 
Ethanol 8.00 
Color Solution (0.01% in water) 
0.42 
______________________________________ 
EXAMPLE 5 
An aerosol deodorant spray of the present invention is prepared by 
combining all the ingredients except propellant in a standard aerosol can. 
The propellant is then added under pressure and the can is sealed. 
______________________________________ 
Component Weight % 
______________________________________ 
Piroctone Acid 0.38% 
Perfume 1.40% 
(contains about 25% 
aldehydes and ketones) 
Glycerine 0.70% 
Isopropyl Myristate 0.70% 
Dipropylene Glycol 3.50% 
Ethanol 63.32% 
1,1-Difluoroethane (propellant) 
30.00% 
______________________________________ 
EXAMPLE 6 
A pump spray deodorant of the present invention is prepared by first 
combining ethanol and piroctone diethanolamine to form a solution and then 
mixing in the remainder of the ingredients until uniform. The liquid is 
then packaged in a pump sprayer container. 
______________________________________ 
Component Weight % 
______________________________________ 
Piroctone Diethanolamine 
0.50% 
Perfume 1.40% 
(contains about 15% aldehydes and 
ketones, including about 10% 
hexyl cinnamic aldehyde) 
Ethanol 41.00% 
Glycerin 5.00% 
Water 52.10% 
______________________________________ 
The compositions described in Examples 1-6, when applied to the axillary 
area of a human in an effective amount, provide treatment and prevention 
of body malodors. The compositions themselves are stable without negative 
interaction between the perfume and antimicrobial active components.