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Title:
COMPOSITION
Kind Code:
A2
Abstract:
Conditioning shampoo composition comprising: i) a cleansing phase, ii) a conditioning gel network comprising a fatty material; an anionic surfactant and a cationic surfactant; wherein the conditioning gel network has no overall charge or is anionic; iii) an oil; and iv) a hydrophobically modified cationic deposition polymer; in which cationic deposition polymer and the anionic surfactant of the gel network contain alkyl groups with within 4 carbons of each other.


Inventors:
MURRAY, Andrew, Malcolm (Unilever R&D Port Sunlight, Quarry Road EastBebington, Wirral Merseyside CH63 3JW, GB)
PHAM, Thuy-Anh (Unilever R&D Port Sunlight, Quarry Road EastBebington, Wirral Merseyside CH63 3JW, GB)
Application Number:
EP2011/056162
Publication Date:
11/03/2011
Filing Date:
04/18/2011
Assignee:
UNILEVER PLC (a company registered in England and Wales under company no, Unilever House100 Victoria Embankment, London Greater London EC4Y 0DY, 41424, GB)
UNILEVER N.V. (Weena 455, AL Rotterdam, NL-3013, NL)
HINDUSTAN UNILEVER LIMITED (Hindustan Lever House, 165/166 Backbay ReclamationMaharashtra, Mumbai 0, 400 02, IN)
MURRAY, Andrew, Malcolm (Unilever R&D Port Sunlight, Quarry Road EastBebington, Wirral Merseyside CH63 3JW, GB)
PHAM, Thuy-Anh (Unilever R&D Port Sunlight, Quarry Road EastBebington, Wirral Merseyside CH63 3JW, GB)
International Classes:
A61K8/04; A61K8/34; A61K8/37; A61K8/42; A61K8/46; A61K8/73; A61Q5/02; A61Q5/12
View Patent Images:
Domestic Patent References:
WO2009112420A1N/A2009-09-17
WO2003094874A1N/A2003-11-20
WO1999002122A1N/A1999-01-21
WO1992006154A1N/A1992-04-16
Foreign References:
200602695022006-11-30
200600242562006-02-02
51946391993-03-16
EP91635682009-06-24
Attorney, Agent or Firm:
TANSLEY, Sally, Elizabeth (Unilever PLC, Unilever Patent GroupColworth House, Sharnbrook, Bedford Bedfordshire MK44 1LQ, GB)
Claims:
CLAIMS

1 . Conditioning shampoo composition comprising:

i )) a cleansing phase,

ϋ i)) a conditioning gel network comprising a fatty material;

an anionic surfactant and a cationic surfactant;

wherein the conditioning gel network has no overall charge or is anionic;

iii) an oil; and

iv) a hydrophobically modified cationic deposition polymer;

in which cationic deposition polymer and the anionic surfactant of the gel network contain alkyl groups with within 4 carbons of each other.

Composition according to claim 1 wherein the conditioning gel network comprises a fatty material selected from fatty alcohols, fatty esters, fatty acids and fatty amides.

Composition according to claim 2 wherein the fatty material is straight chain or branched and has from 14 to 30 carbons.

Composition according to any preceding claim wherein the gel network anionic surfactant has from 16 to 22 carbons.

Composition according to any preceding claim wherein the conditioning gel network comprises a cationic surfactant having from 14 to 30 carbons.

6. Composition according to any preceding claim wherein the hydrophobically modified cationic deposition polymer has a carbon chain having from 14 to 30 carbons.

7. Composition according to any preceding claim wherein the oil is selected from polyalphaolefin oils, ester oils, triglyceride oils, hydrocarbon oils and mixtures thereof. 8. Composition according to any preceding claim wherein the oil has a

viscosity of from 0.1 to 500 centipoises measures at 30°C on a Brookfield viscometer with spindle RV5 and 20 rpm.

9. Composition according to any preceding claim further comprising a

silicone.

Description:
COMPOSITION

The present invention relates to a composition comprising an oil. Within the hair care field there is a need for improved conditioning shampoo compositions which comprise oils. Improvements are particularly sought with regard to product stability, especially at raised temperatures.

Additionally the present invention has the further advantage that a polymeric suspending agent is not required, thus reducing the cost of the formulation.

Co-pending patent application number EP09163568 describes a conditioning shampoo composition comprising from 1 -26% wt. cleansing phase, a conditioning gel network with an oil dispersed therein, a polymeric suspending agent and a cationic deposition polymer.

Accordingly, the present invention provides a conditioning shampoo composition comprising:

i) a cleansing phase,

ii) a conditioning gel network comprising a fatty material;

an anionic surfactant and a cationic surfactant;

wherein the conditioning gel network has no overall charge or is anionic; iii) an oil; and

iv) a hydrophobically modified cationic deposition polymer;

in which cationic deposition polymer and the anionic surfactant of the gel network contain alkyl groups with within 4 carbons of each other.

All viscosities mentioned in this specification are measured viscosity at 30°C on a Brookfield viscometer with spindle RV5 and 20 rpm. Preferably, the composition has a viscosity of 2000 to 7000 cPs measures at 30°C.

Conditioning Gel Network

The conditioning gel network comprises:

(a) fatty material;

(b) a gel network anionic surfactant comprising an alkyl group with from 16 to 30 carbons;

(c) cationic surfactant; wherein the conditioning gel network has no overall charge or is anionic. The cationic surfactant provides improved robustness of the fatty material/anionic surfactant gel network leading to improved conditioning benefit from a composition also comprising a non-cationic cleansing phase. The difference in carbon chain length between the anionic surfactant in the cleansing phase and the anionic surfactant in the conditioning gel significantly improve stability of the conditioning gel network and maintain its integrity in the shampoo composition.

Preferably, the anionic and cationic surfactants in the gel network contain within 4, preferably 2 carbons and most preferably the same number of carbons. More preferably, they comprise a single alkyl group of within 4, more preferably within 2 and most preferably are the same length. This assists in maintaining stability of the gel network.

Preferably, the carbons in the gel network cationic surfactant are present in a single alkyl group. More preferably the gel network cationic surfactant has from 16-30 carbons. Preferably, the cationic surfactants have the formula N+(R1)(R2)(R3)(R4), wherein R1, R2, R3 and R4 are independently (C16 to C30) alkyl or benzyl.

Preferably, one, two or three of R1, R2, R3 and R4 are independently (C16 to C30) alkyl and the other R1, R2, R3 and R4 group or groups are (C1 -C6) alkyl or benzyl.

Optionally, the alkyl groups may comprise one or more ester (-OCO- or -COO-) and/or ether (-O-) linkages within the alkyl chain. Alkyl groups may optionally be substituted with one or more hydroxyl groups. Alkyl groups may be straight chain or branched and, for alkyl groups having 3 or more carbon atoms, cyclic. The alkyl groups may be saturated or may contain one or more carbon-carbon double bonds (e.g., oleyl). Alkyl groups are optionally ethoxylated on the alkyl chain with one or more ethyleneoxy groups. Suitable cationic surfactants for use in conditioner compositions according to the invention include cetyltrimethylammonium chloride, behenyltrimethylammonium chloride, cetylpyridinium chloride, tetramethylammonium chloride,

tetraethylammonium chloride, stearyldimethylbenzylammonium chloride,

cocotrimethylammonium chloride, PEG-2-oleammonium chloride and the

corresponding hydroxides thereof. Further suitable cationic surfactants include those materials having the CTFA designations Quaternium-5, Quaternium-31 and

Quaternium-18. Mixtures of any of the foregoing materials may also be suitable. A particularly useful cationic surfactant for use in conditioners according to the invention is cetyltrimethylammonium chloride, available commercially, for example as GENAMIN CTAC, ex Hoechst Celanese. Another particularly useful cationic surfactant for use in conditioners according to the invention is

behenyltrimethylammonium chloride, available commercially, for example as GENAMIN KDMP, ex Clariant. Another example of a class of suitable cationic surfactants for use in the invention, either alone or in admixture with one or more other cationic conditioning surfactants, is a combination of (i) and (ii) below:

(i) an amidoamine corresponding to the general formula (I):

R

R CONH(CH2)mN

R3

in which R1 is a hydrocarbyl chain having 10 or more carbon atoms, R2 and R3 are independently selected from hydrocarbyl chains of from 1 to

10 carbon atoms, and

m is an integer from 1 to about 10; and

(ii) an acid.

As used herein, the term hydrocarbyl chain means an alkyl or alkenyl chain.

Preferred amidoamine compounds are those corresponding to formula (I) in which R1 is a hydrocarbyl residue having from about 1 1 to about 24 carbon atoms, R2 and R3 are each independently hydrocarbyl residues, preferably alkyl groups, having from 1 to about 4 carbon atoms, and m is an integer from 1 to about 4.

Preferably, R2 and R3 are methyl or ethyl groups.

Preferably, m is 2 or 3, i.e. an ethylene or propylene group. Preferred amidoamines useful herein include stearamido-propyldimethylamine, stearamidopropyldiethylamine, stearamidoethyldiethylamine,

stearamidoethyldimethylamine, palmitamidopropyldimethylamine,

palmitamidopropyldiethylamine, palmitamidoethyldiethylamine,

palmitamidoethyldimethylamine, behenamidopropyldimethylamine,

behenamidopropyldiethylmine, behenamidoethyldiethylamine,

behenamidoethyldimethylamine, arachidamidopropyldimethylamine,

arachidamidopropyldiethylamine, arachid-amidoethyldiethylamine,

arachidamidoethyldimethylamine, and mixtures thereof.

Particularly preferred amidoamines useful herein are

stearamidopropyldimethylamine, stearamidoethyldiethylamine, and mixtures thereof. Commercially available amidoamines useful herein include:

stearamidopropyldimethylamine with tradenames LEXAMINE S-13 available from Inolex (Philadelphia Pennsylvania, USA) and AMIDOAMINE MSP available from Nikko (Tokyo, Japan), stearamidoethyldiethylamine with a tradename

AMIDOAMINE S available from Nikko, behenamidopropyldimethylamine with a tradename INCROMINE BB available from Croda (North Humberside, England), and various amidoamines with tradenames SCHERCODINE series available from Scher (Clifton New Jersey, USA).

Acid (ii) may be any organic or mineral acid which is capable of protonating the amidoamine in the hair treatment composition. Suitable acids useful herein include hydrochloric acid, acetic acid, tartaric acid, fumaric acid, lactic acid, malic acid, succinic acid, and mixtures thereof. Preferably, the acid is selected from the group consisting of acetic acid, tartaric acid, hydrochloric acid, fumaric acid, and mixtures thereof. The primary role of the acid is to protonate the amidoamine in the hair treatment composition thus forming a tertiary amine salt (TAS) in situ in the hair treatment composition. The TAS in effect is a non-permanent quaternary ammonium or pseudo-quaternary ammonium cationic surfactant.

Suitably, the acid is included in a sufficient amount to protonate all the amidoamine present, i.e. at a level which is at least equimolar to the amount of amidoamine present in the composition. The level of cationic surfactant will generally range from 0.01 to 10%, more preferably 0.02 to 7.5%, most preferably 0.05 to 5% by total weight of cationic surfactant based on the total weight of the composition.

The anionic surfactant of the gel network comprises an alkyl chain with from 16-30 carbons, preferably from 16-22 carbons.

Preferably the anionic surfactant is a sulphate or sulphonate, more preferably sulphate, most preferably sodium cetylstearyl sulphate. Preferably, the carbons in the gel network anionic surfactant are present in a single alkyl group.

The gel network comprises an anionic surfactant for achieving an overall anionic charge to the gel network or no overall charge to the gel network.

Preferably the ratio of anionic surfactant (b) within the gel network to cationic surfactant (c) within the gel network has a ratio is from 6:1 to 20:1 most preferably 9:1 to 13:1 . The gel network comprises an anionic surfactant for achieving an overall anionic charge to the gel network or no overall charge to the gel network.

The gel network anionic surfactant is present at from 0.1 to 5 % by weight of the total composition and more preferably from 0.5 to 2.0% wt.

Preferably, the fatty material is selected from fatty acids, fatty amides, fatty alcohols, fatty esters and mixtures thereof. Fatty alcohols are highly preferred. Preferably, the fatty material comprises a fatty group having from 14 to 30 carbon atoms, more preferably 16 to 22. Examples of suitable fatty alcohols include cetyl alcohol, stearyl alcohol and mixtures thereof. An example of a suitable fatty ester is glyceryl monostearate. The level of fatty material in compositions of the invention is conveniently from 0.01 to 10%, preferably from 0.1 to 5% by weight of the total composition.

Preferably the ratio between fatty alcohol (a)within the gel network and anionic surfactant(b) within the gel network is from 0.1 :1 to 100:1 , preferably from 1 .2:1 to 50:1 , more preferably from 1 .5:1 to 10:1 and most preferably around 2:1 .

Preferably, the anionic and fatty materials of the gel network contain alkyl groups with within 4, preferably 2 carbons and most preferably the same number of carbons. More preferably, they comprise a single alkyl group of within 4, more preferably within 2 and most preferably are the same length. This assists in maintaining stability of the gel network. Hydrophobic Cationic Deposition Polymer

The composition according to the invention comprises a hydrophobically modified cationic deposition polymer.

Preferably the hydrophobically modified cationic deposition polymer has a carbon chain having from 14 to 30 carbons. It is preferred if the carbon chain is a single alkyl chain, more preferably unbranched. Suitable hydrophobic cationic deposition aid polymers may be homopolymers which are cationically substituted or may be formed from two or more types of monomers. The weight average (Mw) molecular weight of the polymers will generally be froml ,000 to 6 million Daltons, more preferably from 100, 000 to 2 million daltons. The polymers will have cationic nitrogen containing groups such as quaternary ammonium or protonated amino groups, or a mixture thereof. If the molecular weight of the polymer is too low, then the conditioning effect is poor. If too high, then there may be problems of high extensional viscosity leading to stringiness of the composition when it is poured. The cationic nitrogen-containing group will generally be present as a substituent on a fraction of the total monomer units of the cationic polymer. Thus when the polymer is not a homopolymer it can contain spacer non-cationic monomer units. Such polymers are described in the CTFA Cosmetic Ingredient Directory, 3rd edition. The ratio of the cationic to non-cationic monomer units is selected to give polymers having a cationic charge density in the required range, which is generally from 0.1 to 5 meq/gm, more preferably from 0.2 to 3.0 meq/gm. The cationic charge density of the polymer is suitably determined via the Kjeldahl method as described in the US Pharmacopoeia under chemical tests for nitrogen determination. The cationic amines can be primary, secondary or tertiary amines, depending upon the particular species and the pH of the composition. In general secondary and tertiary amines, especially tertiary, are preferred. Amine substituted vinyl monomers and amines can be polymerised in the amine form and then converted to ammonium by quaternization.

The hydrophobic modified cationic polymers can comprise mixtures of monomer units derived from amine- and/or quaternary ammonium-substituted monomer and/or compatible spacer monomers.

The hydrophobically cationic deposition polymer for use in the present invention can be obtained from hydrophobically modifying deposition polymers from the group consisting of guar, locust bean, tara gum, honey locust, cassia, fenugreek and flame tree. Others useful polymers could include xanthan gum, gellan gum, welan gum, rhamsan gum, konjac, mannan, gum Arabic, soy polysaccharide, xylofructose gums, polyglucose (starch) and tamarind gum.

The hydrophobically modified cationic deposition polymer and the anionic surfactant of the gel network contain alkyl groups with within 4, preferably 2 carbons and most preferably the same number of carbons. More preferably, they comprise a single alkyl group of within 4, more preferably within 2 and most preferably are the same length. This assists in maintaining stability of the gel network and reduces the need for a suspending agent

Similarly the hydrophobically modified cationic deposition polymer and the fatty material of the gel network contain alkyl groups with within 4, preferably 2 carbons and most preferably the same number of carbons. More preferably, they comprise a single alkyl group of within 4, more preferably within 2 and most preferably are the same length. This assists in maintaining stability of the gel network and reduces the need for a suspending agent.

Cationic polymer will generally be present in a shampoo composition of the invention at levels of from 0.01 to 5%, preferably from 0.05 to 2%, more preferably from 0.07 to 1 .2% by total weight of cationic polymer based on the total weight of the composition.

Oils

The oil may be any oil commonly used in personal care products for example polyolefin oils, ester oils, triglyceride oils, hydrocarbon oils and mixtures thereof. Preferably, the oil is a light oil. Preferred oils include those selected from:

• Oils having viscosities from 0.1 to 500 centipoises measures at 30C.

• Oils with viscosity above 500 centipoises (500-500000 cps) which contains up to 20% of a lower viscosity fraction (less than 500cps).

The oil may be dispersed within the gel network or as part of the cleansing phase.

Improved stability is achieved if the oil is within the gel network.

If the oil is in the cleansing phase the product can be easily processed. Polyalphaolefin oil

Preferably, the oil is a polyalphaolefin oil. Like silicone oils, these materials may enhance the conditioning benefits found with compositions of the invention.

Suitable polyalphaolefin oils include those derived from 1 -alkalene monomers having from 6 to 16 carbons, preferably from 6 to 12 carbons. Non limiting examples of materials include 1 -hexene, 1 -octene, 1 -decene, 1 -dodecene, 1 -tetradecene, 1 - hexadecene, branched isomers such as 4-methyl-1 -pentene and mixtures thereof.

Preferred polyalphaloefins include polydecenes with tradename Puresyn 6 having a number average molecular weight of about 500, Puresyn 100 having a molecular weight of about 3000 and Puresyn 300 having a molecular weight of about 6000 commercially available from Mobil.

Preferably, the polyalphaolefin oil is present at from 0.05 to 10%, particularly from 0.2 to 5%, and especially from 0.5 to 3% by weight of the total composition.

Triglyceride oil

Suitable triglyceride oils include fats and oils including natural fats and oils such as jojoba, soybean, sunflower seed oil, rice bran, avocado, almond, olive, sesame, castor, coconut, coconut palm oil, sunflower oil, mink oils; cacao fat; beef tallow, lard; hardened oils obtained by hydrogenating the aforementioned oils; and synthetic mono, di- and triglycerides such as myristic acid glyceride and 2- ethylhexanoic acid glyceride.

Preferably, the triglyceride oil is present at from 0.05 to 10%, particularly from 0.2 to 5%, and especially from 0.5 to 3% by weight of the composition.

Hydrocarbon oils

Suitable hydrocarbon oils have at least 12 carbon atoms, and include paraffin oil, polyolefin oil, mineral oil, saturated and unsaturated dodecane, saturated and unsaturated tridecane, saturated and unsaturated tetradecane, saturated and unsaturated pentadecane, saturated and unsaturated hexadecane, and mixtures thereof. Branched-chain isomers of these compounds, as well as of higher chain length hydrocarbons, can also be used. Also suitable are polymeric hydrocarbons of C2-6 alkenyl monomers, such as polyisobutylene.

Preferably, the hydrocarbon oil is present at from 0.05 to 10%, particularly from 0.2 to 5%, and especially from 0.5 to 3% by weight of the composition.

Ester oils

Suitable ester oils have at least 10 carbon atoms, and include esters with

hydrocarbyl chains derived from fatty acids or alcohols. Typical ester oils are formula R'COOR in which R' and R independently denote alkyl or alkenyl radicals and the sum of carbon atoms in R' and R is at least 10, preferably at least 20. Di- and trialkyl and alkenyl esters of carboxylic acids can also be used. Preferably, the ester oil is present at from 0.05 to 10%, particularly from 0.2 to 5%, and especially from 0.5 to 3% by weight of the total composition.

Preferably, the composition comprises a cleansing anionic surfactant which comprises an alkyl group with from 10 to 14 carbons.

Cleansing Phase

Compositions of the invention comprise a cleansing phase, preferably at a level from1 -26% wt. of the total composition.

The cleansing phase comprises a cleansing surfactant. The cleansing phase anionic surfactant has from 8 to 14 carbons, more preferably from 10 to 12 and most preferably 12 carbons. More preferably, these carbons are present in a single alkyl group. Preferred anionic cleansing surfactants include alkali metal alkyl sulphates, more preferably the alkyl ether sulphates. Particularly preferred anionic cleansing surfactants include sodium lauryl ether sulphate. The level of cleansing surfactant is from 5 to 26% by weight of the total composition.

Other Components The aqueous shampoo composition of the invention can further comprises a suspending agent, however it is preferable if the composition comprises less than 0.1 wt% of suspending agent, preferably no suspending agent.

Preferably, the hair care compositions of the invention are aqueous, i.e. they have water or an aqueous solution or a lyotropic liquid crystalline phase as their major component.

Suitably, the composition will comprise from 10 to 98%, preferably from 30 to 95% water by weight based on the total weight of the composition.

The composition according to the invention preferably comprises a silicone.

Particularly preferred silicone conditioning agents are silicone emulsions such as those formed from silicones such as polydiorganosiloxanes, in particular polydimethylsiloxanes which have the CTFA designation dimethicone,

polydimethyl siloxanes having hydroxyl end groups which have the CTFA designation dimethiconol, and amino-functional polydimethyl siloxanes which have the CTFA designation amodimethicone. The emulsion droplets may typically have a Sauter mean droplet diameter (D3 2) in the composition of the invention ranging from 0.01 to 20 micrometer, more preferably from 0.2 to 10 micrometer. A suitable method for measuring the Sauter mean droplet diameter (D32) is by laser light scattering using an instrument such as a Malvern Mastersizer.

Suitable silicone emulsions for use in compositions of the invention are available from suppliers of silicones such as Dow Corning and GE Silicones. The use of such pre-formed silicone emulsions is preferred for ease of processing and control of silicone particle size. Such pre-formed silicone emulsions will typically additionally comprise a suitable emulsifier such as an anionic or nonionic emulsifier, or mixture thereof, and may be prepared by a chemical emulsification process such as emulsion polymerisation, or by mechanical emulsification using a high shear mixer. Pre-formed silicone emulsions having a Sauter mean droplet diameter (D3 2) of less than 0.15 micrometers are generally termed

microemulsions.

Examples of suitable pre-formed silicone emulsions include emulsions DC2-1766, DC2-1784, DC-1785, DC-1786, DC-1788 and microemulsions DC2-1865 and DC2- 1870, all available from Dow Corning. DC7051 is a preferred silicone. These are all emulsions/microemulsions of dimethiconol. Also suitable are amodimethicone emulsions such as DC2-8177 and DC939 (from Dow Corning) and SME253 (from GE Silicones).

Also suitable are silicone emulsions in which certain types of surface active block copolymers of a high molecular weight have been blended with the silicone emulsion droplets, as described for example in WO03/094874. In such materials, the silicone emulsion droplets are preferably formed from polydiorganosiloxanes such as those described above. One preferred form of the surface active block copolymer is according to the following formula:

HO(CH2CH2O)x(CH(CH3)CH2O)y(CH2CH2O)x H wherein the mean value of x is 4 or more and the mean value of y is 25 or more.

Another preferred form of the surface active block copolymer is according to the following formula:

(HO(CH2CH2O)a(CH(CH3)CH2O)b)2-N-CH2-CH2-N((OCH2CH(CH3))b(OCH2CH2)a OH)2 wherein the mean value of a is 2 or more and the mean value of b is 6 or more.

Mixtures of any of the above described silicone emulsions may also be used.

The above described silicone emulsions will generally be present in a composition of the invention at levels of from 0.05 to 15%, preferably from 0.5 to 12% by total weight of silicone based on the total weight of the composition.

The silicone is preferably present at from 0.5 to 15% wt., more preferably 1 to 12% by weight. Optionally, a composition of the invention may contain further ingredients as described below to enhance performance and/or consumer acceptability.

The composition can include co-surfactants, to help impart aesthetic, physical or cleansing properties to the composition. An example of a co-surfactant is a nonionic surfactant, which can be included in an amount ranging from 0.5 to 10%, preferably from 0.7 to 6% by weight based on the total weight of the composition. For example, representative nonionic surfactants that can be included in shampoo compositions of the invention include condensation products of aliphatic (Cs - Cis) primary or secondary linear or branched chain alcohols or phenols with alkylene oxides, usually ethylene oxide and generally having from 6 to 30 ethylene oxide groups.

Other representative nonionic surfactants include mono- or di-alkyl alkanolamides. Examples include coco mono- or di-ethanolamide and coco mono- isopropanolamide. A particularly preferred nonionic surfactant is coco mono- ethanolamide.

Further nonionic surfactants which can be included in shampoo compositions of the invention are the alkyl polyglycosides (APGs). Typically, the APG is one which comprises an alkyl group connected (optionally via a bridging group) to a block of one or more glycosyl groups. Preferred APGs are defined by the following formula: wherein R is a branched or straight chain alkyl group which may be saturated or unsaturated and G is a saccharide group.

R may represent a mean alkyl chain length of from about C5 to about C20.

Preferably R represents a mean alkyl chain length of from about Cs to about C12. Most preferably the value of R lies between about 9.5 and about 10.5. G may be selected from C5 or C6 monosaccharide residues, and is preferably a glucoside. G may be selected from the group comprising glucose, xylose, lactose, fructose, mannose and derivatives thereof. Preferably G is glucose.

The degree of polymerisation, n, may have a value of from about 1 to about 10 or more. Preferably, the value of n lies from about 1 .1 to about 2. Most preferably the value of n lies from about 1 .3 to about 1 .5.

Suitable alkyl polyglycosides for use in the invention are commercially available and include for example those materials identified as: Oramix NS10 ex Seppic; Plantaren 1200 and Plantaren 2000 ex Henkel.

Other sugar-derived nonionic surfactants which can be included in compositions of the invention include the C10-C18 N-alkyl (Ci-Ce) polyhydroxy fatty acid amides, such as the C12-C18 N-methyl glucamides, as described for example in WO 92 06154 and US 5 194 639, and the N-alkoxy polyhydroxy fatty acid amides, such as C10-C18 N- (3-methoxypropyl) glucamide.

A preferred example of a co-surfactant is an amphoteric or zwitterionic surfactant, which can be included in an amount ranging from 0.5 to about 10%, preferably from 1 to 6% by weight based on the total weight of the total composition.

Examples of amphoteric or zwitterionic surfactants include alkyl amine oxides, alkyl betaines, alkyl amidopropyl betaines, alkyl sulphobetaines (sultaines), alkyl glycinates, alkyl carboxyglycinates, alkyl amphoacetates, alkyl amphopropionates, alkylamphoglycinates, alkyl amidopropyl hydroxysultaines, acyl taurates and acyl glutamates, wherein the alkyl and acyl groups have from 8 to 19 carbon atoms. Typical amphoteric and zwitterionic surfactants for use in shampoos of the invention include lauryl amine oxide, cocodimethyl sulphopropyl betaine, lauryl betaine, cocamidopropyl betaine and sodium cocoamphoacetate. A particularly preferred amphoteric or zwitterionic surfactant is cocamidopropyl betaine.

Mixtures of any of the foregoing amphoteric or zwitterionic surfactants may also be suitable. Preferred mixtures are those of cocamidopropyl betaine with further amphoteric or zwitterionic surfactants as described above. A preferred further amphoteric or zwitterionic surfactant is sodium cocoamphoacetate.

A composition of the invention may contain other ingredients for enhancing performance and/or consumer acceptability. Such ingredients include fragrance, dyes and pigments, pH adjusting agents, pearlescers or opacifiers, viscosity modifiers, and preservatives or antimicrobials. Each of these ingredients will be present in an amount effective to accomplish its purpose. Generally these optional ingredients are included individually at a level of up to 5% by weight of the total composition.

The invention will be further illustrated by the following, non-limiting Example, in which all percentages quoted are by weight based on total weight unless otherwise stated.

EXAMPLE

Component %ad 1 2 3 4 A

Sodium Laureth 70 17.14 17.14 17.14 17.14 17.14 Sulphate

Cocoamidopropyl 30 5.33 5.33 5.33 Betaine

Cocamide MEA 85 - - 1 .0 1 .0 -

Glycol Distearate 35 4.0 4.0 4.0 4.0 4.0 Dimethiconol 50 4.0 4.0 4.0 4.0 4.0

Sodium Cetylstearyl 100 0.6 0.6 0.6 0.6 0.6 sulphate

Cetostearyl Alcohol 100 1 .0 1 .0 1 .0 1 .0 1 .0

Cetyl 29 0.17 0.17

trimethylammoniunn

chloride

Behenyl Trimethyl 77.5 0.06 0.06 0.06 Ammonium Chloride

Mineral Oil 100 0.5 0.5 0.5 0.5 0.5

Hydrophobically 100 0.2 0.2 0.2 0.2

modified Guar

Hydroxypropyl

Trimonium Chloride

Guar Hydroxypropyl 100 0.2 Trimonium Chloride

Parfum 100% 0.8 0.8 0.8 0.8 0.8

DMDM Hydantoin and 50% 0.2 0.2 0.2 0.2 0.2 3-iodo-2propylnylbutyl

carbamate

Sodium chloride 100% Vise. Vise. Vise. Vise. Vise.

Aqua q.s.to q.s.to q.s.to q.s.to q.s.to

100 100 100 100 100 Example A Viscosity Brookfield measured at 30C= 7.6 Pa.s

Relaxation Time=0.03s

15mm clear layer at bottom of the shampoo jar after 3 months storage at 45C

Examples 1 to 4 Viscosity Brookfield measured at 30C= 22.0 Pa.s

Relaxation Time=0.055s

Up to 0.5mm clear layer at bottom of the shampoo jar after 3 months storage at 45C