AU725149B2 - System comprising synthetic detergent bar and pouf for holding bar - Google Patents

Description

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AUSTRALIA

PATENTS ACT 1990 S S S. S

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S

S

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ORIGINAL

COMPLETE SPECIFICATION STANDARD PATENT TITLE OF INVENTION SYSTEM COMPRISING SYNTHETIC DETERGENT BAR AND POUF FOR HOLDING BAR Name and Address of Applicant: UNILEVER AUSTRALIA LIMITED of 20-22 CAMBRIDGE STREET, EPPING NSW 2121 The following statement is a full description of this invention, including the best method of performing it known to me:- ,C6466 SYSTEM COMPRISING SyNTHETIC DETERGENT

BAR

AND POUF FOR HOLDING

BAR

FIELD OF THE INVENTION The present invention relates to systems for helping deliver bar compositions to the skin and for helping boost lather. In particular, it relates to devices for holding bars which can be used in applying the bar compositions to the skin. The bar containers may be helpful for delivering consumer beneficial properties which may not be as readily available in synthetic detergent bars. For example, synthetic bars generally use surfactants which are less 15 harsh than soap, but often provide less lather (some 15 synthetic bars may further comprise emollient oils which actually depress lather). The containers may also reduce sensory perception of mush.

a :ACKGROUND OF THE

INVENTION

20 "The use of soap holders or dispensers to hold a bar of soap is itself not new. U.S Patent No. 4,480,939 to Upton, for example, discloses a soap holder and dispenser suitable for use in a shower which includes a pack formed from synthetic melting material sized to receive a bar of soap.

U.S. Patent No. 3,167,805 to Zuppinger et al. also teaches a net enclosed soap article.

U.S. Patent No. 5,462,378 to Webb teaches a wash cloth adapted to receive a bar of soap; and U.S. Patent No.

4,190,550 discloses pads of non-woven fibers containing a solid core of soap.

In none of these references is it taught or recognized that synthetic surfactant bars, for example, bars containing C6466 2 5-90%, preferably 10-80% surfactant, when used in a holder, particularly a holder made of a polymeric mesh sponge material extruded tubular melting mesh) can remedy some of the deficiencies found in synthetic bars and not found in pure soap bars. For example, a synthetic bar, particular one comprising lesser amounts of surfactants and more structurant 5-60% surfactant, preferably 10-50% surfactant and 10-40% structurant such as polyalkylene glycol) may be a less moisturizing bar and therefore require benefit agents/ moisturizers. Often these oily moisturizing agents are lather depressants. Use of the bar pouf retainer allows these relatively low surfactant, moisturizercontaining bars to be utilized without sacrificing lather.

In addition, synthetic bars tend to be softer/mushier than 15 pure soap bars. Use of the bar container provides sensory signals which allow the consumer to sense less mush. Lesser lather and mush perception are not problems normally associated with non-synthetic soap bar.

20 Finally, preferred tubular mesh holders provide other advantages one would expect from a nylon mesh bag such as stimulating skin with the rough material; and/or allowing -bars to be readily held during the lathering experience.

BRIEF SUMMARY OF THE INVENTION In one embodiment, the present invention relates to a soap bar cleansing system comprising: a synthetic surfactant bar composition comprising: 5% to 90% by wt., preferably 20% to 60% by wt. synthetic surfactant selected from the group consisting of anionic, nonionic, amphoteric, cationic surfactants and mixtures thereof; and C6466 10% to 90%, preferably 20% to 60% by wt. of a bar structurant selected from the group consisting of C, to C, 4 fatty acids or ester ,derivatives or salts thereof sodium stearate); C, to C 24 alcohols or ether derivatives thereof; polyalkylene glycols having MW between 1000 and 100,000, water soluble starches maltodextrin); and hydrophobically modified water soluble polymers EO-PO block copolymers or hydrophobically modified PEG); and a light weight polymeric meshed personal cleansing hand held sponge; wherein said sponge is in a form suitable for use as a hand held cleansing 15 implement; wherein said bar composition is inserted into said sponge such that the sponge encloses the bar composition.

20 The surfactant bar composition of the invention may comprise 5% to 60% surfactant and greater amounts of structurant relative to surfactant. In addition, it may comprise benefit agent.

In one embodiment the composition comprises: 5 to 60% surfactant; 10% to 70% by wt. structurant; and 0.01 to 15% by wt. benefit agent/emollient.

In another embodiment, the sponge, in addition to containing/enveloping the bar, additionally has an insert which is kept in the pouf container/sponge during use of soap-in-container.

C6466 4 BRIEF DESCRIPTION OF THE FIGURES Figures 1-3 are picture of polymeric meshed material as a sponge (no insert) of prior art.

Specifically: Figure 1 is a perspective representation of a diamond mesh polymeric sponge. Rope handle 7 may be used for the pouf Figure 2 is a picture showing how the sponge can be held in the hand.

Figure 3 shows netting mesh which can be used to make the sponge.

The ease with which a cleaning polymeric mesh sponge can be held in the hand for cleaning is shown in Figure 2. A security band 13 holds the multi-layered netting mesh together to form the polymeric mesh sponge.

The netting mesh that can be used in making the polymeric mesh sponge is illustrated in Figure 3 wherein 21 represents the mesh in stretched position. The fine polymeric filaments used in making the netting are represented by 18 with 19 representing the spot bonding of the filaments to form the open mesh Figure 4 is a figure of pouf "bag" of invention designed to hold a bar inserted therein. The figure shows bag in closed position (bar would be inside) with drawstring pulled to close bag. The bag is made of polymeric meshed material.

C6466 DETAILED DESCRIPTIQNOF INVENTION The present invention relates to a cleansing system comprising a bar composition and a sponge/pouf completely enclosing/envelop said bar.

More specifically, the system comprises: a synthetic surfactant bar composition comprising: 5% to 90% by wt., preferably 20 to 10 synthetic surfactant selected from the group consisting of anionic, nonionic, amphoteric and cationic surfactants and mixtures thereof; and 10% to 90%, preferably 20 to 60% by wt. of a bar structurant and/or filler selected from the group consisting of C, to C- fatty acid or ester derivatives thereof or salts thereof; C, to C 24 alcohols or ether derivatives thereof; polyalkylene glycol having MW between 1000 and 100,000, preferably 200 and 20,000, starches and hydrophobically modified water soluble polymers such as EO-PO block copolymers or hydrophobically modified polyalkyleneglycol; and a light weight polymeric meshed personal cleansing hand held sponge; wherein said sponge is in a form suitable for use in a hand held cleansing implement; and wherein said bar composition is inserted into said sponge such that the sponge encloses the bar composition.

06466 6 I" BAR COMPOSITION Surfactant System The anionic detergent active which may be used may be aliphatic sulfonates, such as a primary.alkane sulfonate, primary alkane C,-C 22 disulfonate, C,-C 2 alkene sulfonate, hydroxyalkane sulfonate or alkyl glyceryl ether sulfonate (AGS); or aromatic sulfonates such 10 as alkyl benzene sulfonate.

The anionic may also be an alkyl sulfate C 12

-C

18 alkyl sulfate) or alkyl ether sulfate (including alkyl glyceryl ether sulfates). Among the alkyl ether sulfates are those having the formula:

RO(CH

2 CHO2) nSO 3

M

wherein R is an alkyl or alkenyl having 8 to 18 carbons, S 20 preferably 12 to 18 carbons, n has an average value of greater than 1.0, preferably greater than 3; and M is a solubilizing cation such as sodium, potassium, ammonium or substituted ammonium. Ammonium and sodium lauryl ether sulfates are preferred.

The anionic may also be alkyl sulfosuccinates (including mono- and dialkyl, C 6

-C

2 2 sulfosuccinates); alkyl and acyl taurates, alkyl and acyl sarcosinates, sulfoacetates,

C

8

-C

22 alkyl phosphates and phosphates, alkyl phosphate esters and alkoxyl alkyl phosphate esters, acyl lactates, C,-C 22 monoalkyl succinates and maleates, sulphoacetates, alkyl glucosides and acyl isethionates.

C6466 7 Sulfosuccinates may be monoalkyl sulfosuccinates having the formula: 4 R O 2

CCH

2 CH (SO'M) CO 2 M; and amide-MEA sulfosuccinates of the formula; R CONHCHCHO,CCHCH (SOM) COM S 10 wherein R ranges from C -C 2 alkyl and M is a solubilizing cation.

Sarcosinates are generally indicated by the formula: R CON(CH,) CH 2

CO

2

M,

wherein R ranges from C,-C 20 alkyl and M is a solubilizing cation.

Taurates are generally identified by formula: .2 3 R CONR CH 2

CH

2

SO

3

M

2 wherein R ranges from C,-C 20 alkyl, R' ranges from C -C 4 alkyl and M is a solubilizing cation.

Particularly.preferred are the C 8

-C

18 acyl isethionates.

These esters are prepared by reaction between alkali metal isethionate with mixed aliphatic fatty acids having 'from 6 to 18 carbon atoms and an iodine value of less than 20. At least 75% of the mixed fatty acids have from 12 to 18 carbon atoms and up to 25% have from 6 to 10 carbon atoms.

C6466 8 Acyl isethionates, when present, will generally range from about 10% to about 70% by weight of the total bar composition. Preferably, this component is present from about 30% to about The acyl isethionate may be an alkoxylated isethionate such as is described in Ilardi et al., U.S. Patent No.

5,393,466, hereby incorporated by reference. This compound has the general formula: 0 X

Y

II I i R C-O-CH-CH,-(OCH-CH,)m-SO

M

15 wherein R is an alkyl group having 8 to 18 carbons, m is an integer from 1 to 4, X and Y are hydrogen or an alkyl group having 1 to 4 carbons and M is a monovalent cation such as, for example, sodium, potassium or ammonium.

It should be understood that the bar may comprise a certain amount of soap as anionic surfactant. Since the invention is related to use of synthetic surfactants inside a sponge, however, it will be understood that there must be a minimum level of synthetic, at least 5% of all

S

1 25 surfactant, preferably at least 20%, more preferably, at least 50% of all surfactant and most preferably 60 to 100% of the surfactant system.

When used, the term "soap" is used in its popular sense, alkalimetal or alkanol ammonium salt of aliphatic alkane or alkene monocarboxylic acids. Sodium, potassium, mono-, di- and triethanol ammonium cations, or combinations thereof, are suitable for purposes of the invention.

Generally, sodium soaps are used. Soaps useful herein are the well known alkali metal salts of natural or synthetic aliphatic (alkanoic or alkenoic) acids having 13 to 22 C6466 -9 cations, preferably 12 to 18. They may be described as alkali metal carboxylates of acrylic hydrocarbons having about 12 to 22 carbons.

Amphoteric surfactants which may be used in this invention include at least one acid group. This may be a carboxylic or a sulphonic acid group. They include quaternary nitrogen and therefore are quaternary amido acids.

They should generally include an alkyl or alkenyl group of 7 to 18 carbon atoms. They will usually comply with an overall structural formula:

R

II I 15 R-[-C-NH (CH n -N -X-Y 3 R where R is alkyl or alkenyl of 7 to 18 carbon atoms; 2 3 R and R are each independently alkyl, hydroxyalkyl or carboxyalkyl of 1 to 3 carbon atoms; m is 2 to 4; n is 0 to 1; X is alkylene of 1 to 3 carbon atoms optionally substituted with hydroxyl, and Y is -CO 2 or -SO 3 C6466 10 Suitable amphoteric surfactants within the above general formula include simple betaines of formula: 2

R

I

R N' CH,CO, 3

R

and amido betaines of formula:

R

R

15 R CONH(CH 2

-CH

2

CO,

R

where n is 2 or 3.

1 2 In both formulae R R and R are as defined previously. R may in particular be a mixture of C 12 and C14 alkyl groups derived from coconut so that at least half, 1 preferably at least three quarters of the groups R have 10 to 2 3 14 carbon atoms. R and R are preferably methyl.

A further possibility is that the amphoteric detergent is a sulphobetaine of formula: 2

R

R -N -(CHJ) SO

R

R

1 4 C6466 11

R"

R CONH(CH 2 (CH2)3SO,

R

where m is 2 or 3, or variants of these in which -(CH 2 3 SO, is replaced by

OH

-CH,CHCH

2

SO

15 1 2 In these formulae R R 2 and R are as discussed previously.

20 The nonionics which may be used include in particular the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example aliphatic alcohols, acids, amides or alkylphenols with alkylene oxides, especially ethylene oxide either alone or with propylene 25 oxide. Specific nonionic detergent compounds are alkyl

(C,-C

22 phenols ethylene oxide condensates, the condensation products of aliphatic primary or secondary linear or branched alcohols with ethylene oxide, and products made by condensation of ethylene oxide with the reaction products of propylene oxide and ethy'lenediamine. Other so-called nonionic detergent compounds include long chain tertiary amine oxides, long chain tertiary phosphine oxides and dialkyl sulphoxides.

C6466 12 The nonionic may also be a sugar amide, such as a polysaccharide amide. Specifically, the surfactant may be one of the lactobionamides described in U.S. Patent No.

5,389,279 to Au et al. which is"hereby incorporated by reference or it may be one of the sugar amides described in Patent Nol 5,009,814 to Kelkenberg, hereby incorporated into the subject application by reference.

Examples of cationic detergents are the quaternary 0 ammonium compounds such as alkyldimethylammonium halogenides.

Other surfactants which may be used are described in U.S. Patent No. 3,723,325 to Parran Jr. and "Surface Active Agents and Detergents" (Vol. I II) by Schwartz, Perry Berch, both of which are also incorporated into the subject application by reference.

One preferable surfactant system comprises: a first synthetic surfactant which is anionic; and a second synthetic surfactant selected from the group consisting of a second anionic different from the first, a nonionic, an amphoteric and mixtures thereof.

The first anionic can be any of those recited above, but is preferably a C 8 to C 18 isethionate as discussed above.

preferably acyl isethionate will comprise 10% to 90% by wt.

total bar composition.

.C6466 13 The second surfactant is preferably a sulfosuccinate, a betaine or mixtures of the two. The second surfactant or mixture of su'rfactant will generally comprise 1% to 10% total bar composition. A particularly preferred composition comprises enough sulfosuccinate to form 3-8% total bar compositions and enough betaine to form 1-5% of total bar composition.

StrucL.uring Ais_anZdLPr Fillers The compositions may also contain 10 to 90% by wt., preferably 20 to 80% by wt. of a structurant and/or filler.

Such structurants can be used to enhance the bar integrity, .improve the processing properties, and enhance desired user sensory profiles.

The structurant is generally long chain, preferably straight and saturated,

(C

8

-C

24 fatty acid or ester derivative thereof; and/or branched long chain, preferably straight and saturated,

(C

8

-C

24 alcohol or ether derivatives thereof.

A preferred bar structurant is polyalkylene glycol with molecular weight between 2000 and 20,000, preferably between 3000 and 10,000. Those PEGs are commercially available, such as those marketed under the tradename of CARBOWAX

SENTRY

PEG8000

R

or PEG4000

R

by Union Carbide.

Other ingredients that can be used as structurants or fillers include starches, preferably water soluble starches such as maltodextrin and polyethylene wax or paraffin wax.

Structuring aids can also be selected from water soluble polymers chemically modified with hydrophobic moiety or C646 6 14 moieties, for example, EO-PO block copol-sterat hydoocallYO modified PEGS such as POE( 20 0)-gyeyseaae CSAm

OE

120 (PEG 120 Methyl Glucose Dioleate) and .0"stearate)I, and Rewoder~n (PEG modified glyceryl cocoate, palmnate or tallowate) from Rewo Chemicals.

other structuring aids which may be used include Ai-cerchol Polymer HM 1500 (NolOxyyl HydroethYl Cellulose) In additioni the bar compositionls of the I nvention may include 0 to 15% by wt. optional ingredients as follows: 15 perfumes; equestering agenlts, such as tetrasodium etylendia~inettraaeta (EDTA), EHDP or mixtures in an amount of 0.01- to preferably 0.01 to 0.05%; and colorinlg agents, opacifierS and pearlizers such as zinc stearate, magneium stearate, Ti 2 EGMS (ethylene glycol monostearate) or Lytron 621 (Styrene/Acrylate copolymer); all of which are useful in nhanlcing the appearance or cosmetic properties of the product.

The compositionis may further comprise antimicrobials such as 2-hydroxy-4, 2 1 4 trjic)Qrodiphenylether (DP30 0 preservatives such as diehlliehlyati (Glydant XL1000) parabenst sorbic acid etc.

The compositions may also comprise coconut acyl mono- or diethanolamides as suds boosters, and strongly ionizing salts such as sodium chloride and sodium sulfate may also be used to advantage.

C66466 15 Antioxidants such as, for example, butylated hydroxytoluene (BHT) may be used advantageously in amounts of about 0.01% or higher if appropriate.

Cationic polymers as coditioners which may be used include Quatrisoft LM-200 Polyquaternium- 24 Merquat Plus (Ri conditioners.

3330 Polyquaternium 39; and Jaguar type conditioners.

polyethylene glycols as conditioners which may be used include: o Polyox WSR-205 PEG 14M, Polyox WSR-N-60K PEG 45M, or Polyox

WSR-N-

75 0 PEG 7M.

Another ingredient which may be included are exfoliants such as polyoxyethylene beads, walnut shells and apricot seeds.

20 Watex Compositions of the invention also comprise 1% to 10% by wt., preferably 4% to 7% by wt. water.

In one embodiment of the invention, the bar composition comprises no more than about 60% surfactant. Said compositions also contain 10% to 70% by wt.

structurant/filler.

Because of lower surfactant levels, such compositions would be more "drying" on the skin and such compositions would comprise 0.01 to 10% benefit agent/emollient.

A preferred composition comprises: C; 10% to 60% by wt. surfactant as defined above; SC6466 -16- 10% to 35% by wt. structurant/filler as defined above; and 0.01 to 10% emollient/benefit agent.

be a single benefit The benefit agent ,,composition" may be a single benefit agent component or it may be a benefit agent compound added via a carrier. Further the benefit agent composition may be via a carrier.Fre all of which may a mixture of two or more compounds one or all of which may have a beneficial aspect. In addition, the benefit agent 0 itself may act as a carrier for other componets one may wish to add to the bar composition.

.:Th be an "emollient oil" by which is The benefit agent canbe skin (stratum corneum) by meant a substance which softens the in(stram corneum) by increasing into water content and keeping it soft by retarding decrease of water content.

Preferred emollients include: 20 as linear and cyclic polydimethylsiloxanes; amino, alkyl alkylaryl and aryl silicone oils; S(b) fats and oils includng natural fats and oils such jojoba, soybean, rice bran, avocado, almond, Slive, sesame, persic, castor, coconut, mink oils; cacao fat; beef tallow, lard; hardened oils obtained by hydrogenatin the aforementioned oils; and synthetic mono, di and triglycerides such as myristic acid glyceride and 2 -ethylhexanoic acid glyceride; waxes such as carnauba, spermaceti, beeswax, lanolin and derivatives thereof; hydrophobic plant extracts; hydrocarbons such as liquid paraffins, vaseline, microcrystalline wax, ceresin, squalene, pristan oc and mineral oil; C 6466 17 higher fatty acids such as lauric, myristic, palmitic, stearic, behenic, oleic, linoleic, linolenic, lanolic, isostearic and poly unsaturated fatty acids

(PUFA);

higher alcohols such as lauryl, cetyl, stearyl, oleyl, behenyl, cholesterol and 2-hexydecanol alcohol; esters such as cetyl octanoate, myristyl lactate, cetyl lactate, isopropyl myristate, myristyl myristate, isopropyl palmitate, isopropyl adipate, butyl stearate, decyl oleate, cholesterol isostearate, glycerol monostearate, glycerol *distearate, glycerol tristearate, alkyl lactate, alkyl citrate and alkyl tartrate; essential oils such as mentha, jasmine, camphor, white cedar, bitter orange peel, ryu, turpentine, cinnamon, bergamot,.citrus unshiu, calamus, pine, lavender, bay, clove, hiba, eucalyptus, lemon, starflower, thyme, peppermint, rose, sage, menthol, cineole, eugenol, citral, citronelle, borneol, linalooi, geranio 1 evening primrose, camphor, thymol, spirantol, penene, limonene and terpenoid oils; lipids such as cholesterol, ceramides, sucrose esters and pseudo-ceramides as described in European Patent Specification No. 556,957; vitamins such as vitamin A and E, and vitaminalkyl esters, including those vitamin C alkyl esters; sunscreens such as octyl methoxyl cinnamate (Parsol MCX) and butyl methoxy benzoylmethane (Parsol 1789); phospholipids; and mixtures of any of the foregoing components.

'/ce466 -18 A particularly preferred benefit agent is silicone, preferably silicones having viscosity greater than about 10,000 centipoise. The silicone may be a gum and/or it may be a mixture of silicones. One example is polydimethylsiloxane having viscosity of about 60,000 centistokes.

II SPONGE/IMPLEMENT f the invention additionally The cleansing system of the invention additionally Scomprises a light weight polymeric meshed personal hand held sponge.

:so can be prepared from The cleansing polymeric mesh sponge can be prepared from readily available raw materials or with specially designed Smesh materials. The polymeric mesh sponge is preferably prepared from extruded tubular netting mesh which has been prepared from special strong and flexible polymeric material.

Extruded tubular netting mesh of this type, and particularly those prepared from polyethylene, have been used forthe covering of meat and poultry and are readily available industry.

The polymeric mesh sponge comprises a plurality of plys of an extruded tubular netting mesh prepared from a strong flexible polymer, preferablY of the group consisting of addition polymers of olefin monomers, and polyamides of polycarboxylic acids and polyamines, said plys of tubular netting mesh are folded upon itself numerous times to form a soft ball-like polymeric mesh sponge.

The tubes or stripes of netted mesh polymer can be securely attached by means of a nylon band or suitable closure. This type of polymeric mesh sponge is disclosed in 466 19 U.S. Patent No. 4,462,135, July 31, 1984, to Sanford, incorporated herein by reference.

An example of a hand-held ball-like polymeric mesh sponge is disclosed in U.S. Patent No. 5,144,744, to Campagnoli, September 8, 1992, incorporated herein by reference. It is a diamond-mesh polyethylene sponge obtained from a number of netting tubes stretched over supports, joined and bound together at the center and then released from the supports.

Commercially available "polymeric mesh sponges" are sold by The Body Shop and Bynum Concepts, Inc. Other suppliers include Supremia Use in New Jersey, Sponge Factory Dominicana in the Dominican Republic and Integrated Marketing Group in Harrison, New York.

"The following are some, although certainly not all, specifications for suitable bath polyethylene polymeric mesh 20 sponges: Size Dia, Tubes Ea. Lencth Total Lencth W mq S3" 2 60 cm 120 cm 3 4" 4 50 cm 200 cm 23 4 80 cm 320 cm 37 One inch 2.54 cm; 3" 3 x 2.54 cm: 4" 4 x 2.54 cm: etc.

Figure 1 is a perspective representation of a diamondmesh polymeric hand held ball-like bath sponge showing a rope handle 7 which can be used in the present invention. The ease with which a cleansing polymeric mesh sponge can be held in the hand for cleaning is shown in Figure 2. A security SC6466 band 13 hold the multi-layered netting mesh together to form the polymeric mesh sponge. The netting mesh that can be used in making the polymeric mesh sponge is illustrated in Figure 3. wherein 21 represents the mesh in stretched position.

The fine polymeric filaments used in making the netting are represented by 18 with 19 representing the spot bonding of the filaments to form the open mesh Two 2 netting tubes at 60 cm length each can be used to 10 make a 3-inch ball sponge. They can be bundled manually with a loop or rope to form a ball-like polymeric mesh sponge.

Other designs such and rectangular gloves and washing implements made with the mesh material also work very well in the system of the present invention.

As seen in Figure 4, the bag has an opening into which bar is inserted. Typically there is some form of closure mechanism, a drawstring around the outside of the bag which can be drawn or closed once the bar is inside. Other 20 closure systems may also be used in theory.

The following examples are intended to better illustrate the invention and are not intended to be limiting in any way.

C466 21

EXAMPLES

Bars having the following general formulation were used to determine differences in lather performance.

Bar B compositions were used with and without a pouf implement.

Protocol A consumer study was conducted wherein consumers were given either Bar A, Bar B with pouf or Bar B without pouf to use at home for a period of two weeks and asked to fill out a questionnaire.

c6466 22 Relevant to the subject invention, the following questions relating to lather attributes were presented.

1. The bar provided sufficient lather during the shower; 2. The bar provided sufficient lather during facial washing.

3. The bar lather was bubbly; and 4. The bar lather was thick and creamy.

For each statement, the subjects were giving a choice of 7 responses ranging as follows: Disagree completely; Disagree strongly; Disagree somewhat; Neither agree nor disagree; Agree somewhat; Agree strongly; and Agree completely.

ein 20 Using standard and well known statistical analysis techniques, significant differences were found.between the responses for Bar B with pouf compared to Bar B without pouf for statements 1 and 3 above (lather during shower and bubbles). Significant difference is measured at 99.557 and 99.98% confidence levels respectively.

For statement 4 (lather thick and creamy) statistical analysis showed significant difference between Bar B with pouf relative to Bar B without pouf at 94.06 confidence level.

No statistic difference was found for statement 2 relating to facial washing. while not wishing to be bound by theory, this may be because people removed the bars from pouf 6 4 6 6 -23 for facial washing or that differences are not as readily noted when washing the face.

a (S (S (S S

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Claims (5)

1. 2. A composition according to claim 1 wherein, in addition to the bar insert, the sponge also contains an insert.
2. 3. A composition according to claim 1 comprising to surfactant and additionally comprising a benefit agent.
3. 4. A composition according to claim 1 comprising: 5 to 60% by wt. surfactant; 10 to 70% by wt. structurant; and .C6466 .0-1 to 15% by wt. benefit agenL/emollient. comprises
4. 6. compris es A composition according to claim 1, wherein (a) 20% to 60 by 'wt. surfactant. A composition according to claim 1, wherein (b) 20% to 60% by wt. structurant and/or filler. 9 10 2 I. >2 a r* ieoj r. a
5. 7. A compositionl according to claim 4, comprising; 10 to 60% surfactant; 10 to 35% structurant/filler; and 0.01 to 10% emollient/b-enefit agent.-- DATED L4~v 2 'q Signed for and on behalf of UNILEVER PLC by yalee Australia Limited