WO2016102395A1 - Quick dissolving film for washing keratin materials - Google Patents

Abstract

The invention relates to a cleansing foaming film comprising: a) at least one water soluble film forming polymer chosen among hydroxy (C1-C6)alkyl (C1-C6)alkyl cellulose, b) at least a water miscible polyol, c) at least a surfactant system comprising at least a soap and at least one foaming surfactant and d) from 10 to 20% by weight of water relative to the total weight of the film. The invention also relates to a process for cleansing keratin materials using said cleansing foaming film.

Description

"Quick dissolving film for washing keratin materials"

The present invention relates to a foaming cosmetic composition in the form of a thin film. Said thin film is able to generate lather when exposed to water and friction and has cleansing properties. It is particularly suitable for use in face and/or body wash.

To date, all face wash compositions appear either in tabes or bottle formats with regular soap or surfactant cream or gel textures respectively and with regular usage protocols. To uplift this category and to bring new excitement among consumers there is a need for unconventional format and usage particularly among face wash users. An innovative idea in this line is development of solid brittle product which will quickly and completely dissolve in minimum amount of water on users palm to produce creamy foam for application; this can be in single or multiple use formats with fixed dosage packaging. Enhanced aesthetics and sensory experience for the coasumers may be achieved by said category of products.

Such products in the sheet form have been mentioned in the art and are generally marketed as paper soap. US 2,356,168 discloses soap sheet consisting of methyl cellulose and soap. Furthermore US 2006/0127458 describes the cleansing sheet composed of surfactant and mixture of different water soluble polymer, including methylcellulose. in the range of 5 to 30 % by weight before drying of the film. The amount of natural soap in described film is less than 10 % by weight, based on the total weight of the film and the film is preferably free of natural soaps. US 2006/022831 describes a personal care composition in the form of films containing water soluble polymers such as pulluan, starch, or blends therefore, along with high amount of surfactants.

State of the art clearly shows that combination of different water soluble polymers along with surfactants has been used for such products. Such sheets are not able to provide creamy and thick foam desired by the consumers.

Consequently, there is a need of a wash film that is stable, and in particular under hot and humid conditions. There is also a need to provide a wash film able to wet out quickly upon contact with water, able to provide good creamy lathering properties and that is enough resistant and pliable not to break during transportation or during removal from the package or the dispenser. Is has now been discovered that the cleansing films according to the present invention are cost effective as not encompassing a large amount of water soluble film forming polymer, that they are suitable form film formation and that they are at the same time efficient for cleansing keratin materials.

The inventors have demonstrated that the combination of:

a) at least one water soluble film forming polymer chosen among hydroxy (Cl- C6)alkyl (Cl-C6)alkyl cellulose,

b) at least a water miscible polyol,

c) at least a surfactant system comprising at least a soap and at least one foaming surfactant, and

d) from 10 to 20% by weight of water relative to the total weight of the film makes it possible to provide a solid film, which is stable and that quickly dissolves in water and gives good creamy lather after friction, for example between hand palms,

In the sense of the present invention, "stable" means that the film is stable (i.e. not soggy) after 2h, preferably 24h, of storage at 25 °C and 60 RH (relative humidity), and preferably after 7 days of storage at 45 °C and 75 RH.

One subject of the present invention is thus a cleansing foaming film comprising:

a) at least one water soluble film forming polymer chosen hydroxy (Cl-

C6)aikyl (C l-C6)alkyl cellulose,

b) at least a water miscible polyol,

c) at least a surfactant system comprising at least a soap and at least one foaming surfactant, and

d) from 10 to 20% by weight of water relative to the total weight of the film.

According to another of its aspects, a subject of the invention is also a process for cleansing keratin materials, which consists in dissolving the cleansing foaming film according to the invention in water, in working the obtained mixture, for example by mild friction, in particular between the hands and fingers, into a foam that is then applied onto the keratin materials and then in rinsing off said foam, especially with water. A subject of the present invention is also the cosmetic use of the cleansing foaming film as defined above, for removing makeup and/or cleansing the skin, the hair and/or mucous membranes.

In other words, the surface to be cleaned may be the hands, the body, the face, the hair and/or mucous membranes.

For the purposes of the present invention the terms "film" and "sheet" are used interchangeably.

"Solid film", as used herein, means a film able to be handled without crumbling too easily.

According to the present invention, the expression "the film wets out" means that the cleansing sheet disintegrates and dissolves in water, fonning lather. This appears when the film according to the invention is wetted and then mild friction is applied, i.e. it is rubbed between the hands and/or fingers or between the hands and/or fingers and the surface to be cleaned.

The disintegration time in water at about 20°C, when mild friction, for example into the hands, is performed, may range between 1 and 20 seconds, typically between 3 and 10.

The amounts of the various ingredients are given in the following in active material and with respect to the film mixture, before drying (mention is made to "preparatory composition", which means that no step of drying has been applied to the mixture), and with respect to the film, i.e. after drying.

FILM

As described hereafter, the film is obtained from a preparatory composition that is molded and then dried.

The foaming cleansing film may be in the form of various shapes. Said shapes may be precut and packed in bags, packettes or cartridges for example. The shapes may be of any kind and even have attractive or funny forms.

Films can be packaged as individual or one-use doses or together side-by side in a multi pack where the films are in contact with each other or are separated by some sort of barrier. Alternatively, the shapes may be cut on demand before each use for example in the form of strips by means of any adapted dispenser, for example a tape roller. A suitable tape roller is disclosed in US2010/0264249.

According to another embodiment, the film may take the form of a sheet with longitudinal and transverse lines or any other forms of lines, allowing that the sheet may be cut to give parts of sheets which may be adapted to the desired amount of washing product.

The film thickness may range from 0.01 to 1mm, in particular from 0.02 to 0.5 mm, for example from 0.05 to 0.15,

The film surface may range from 0.5 to 6 cm², preferably from 1 to 5 cm².

The film according to the invention comprises water in an amount ranging from 10 to 20% by weight, preferably from 12 to 16% by weight, and more preferably from 13 to 15% by weight, relative to the total weight of the film.

WATER SOLUBLE FILM FORMING POLYMER

The foaming cleansing film according to the invention contains a water soluble film forming polymer chosen among hydroxy (Cl-C6)alkyl (Cl-C6)alkyl cellulose.

Suitable water soluble film forming polymers used in personal care cleansing film of the invention include hydroxy 1 (Cl -C6)alkyl (Cl-C6)alkyl cellulose such as hydroxypropyl methyl cellulose, ethylhydroxyethyl cellulose.

According to a particular embodiment, the water soluble film forming polymer comprises a hydroxypropyl methyl cellulose copolymer, such as the one sold under the trade name Benecel K100M by Ashland or the one sold under the trade name Methocel F

4M Personal Care Grade by Dow Chemical).

According to preferred embodiment, said hydroxypropyl methyl cellulose copolymer presents a hydroxypropyl substitution rate ranging from 7 to 12% and a methyl substitution rate ranging from 18 to 30%.

The water soluble film forming polymer chosen among hydroxy (Cl -C6)alkyl

(Cl -C6)alkyl cellulose is advantageously included in an active material content ranging from 1 to 5 % by weight relative to the total weight of the preparatory composition, preferably ranging from 1.5% to 3.5% by weight, and more preferably ranging from 2 to

3% by weight. The water soluble film forming polymer chosen, among hydroxy (Cl-C6)alkyl

(Cl-C6)alkyl cellulose may range from 2 to 17% by weight, preferably from 3 to 15% by weight, and more preferably from 4 to 12% by weight, relative to the total weight of the film.

According to a particular embodiment of the invention, the film contains a mixture of high average molecular weight hydroxy (Cl-C6)alkyl (Cl -C6)alkyl cellulose polymer having an average molecular weight in weight of at least 1000 kDa, preferably ranging from 800 to 1200 kDa, and of a low average molecular weight hydroxy (Cl- C6)alkyl (Cl-C6)alkyl cellulose polymer having an average molecular weight in weight ranging from 100 kDa to 500 kDa.

The amount of hydroxy (Cl -C6)alkyi (Cl -C6)alkyl cellulose polymer of low- average molecular weight relative to the total amount of water soluble film hydroxy (Cl~ C6)alkyl (Cl-C6)alkyl cellulose forming polymer may range from 40 to 80%.

The amount of low average molecular weight hydroxy (Cl-C6)alkyi (C i -

C6)alkyl cellulose polymer may range from 0.5 to 5% by weight, preferably from 1 to 3% by weight relative to the total weight of the preparatory composition.

The amount of low average molecular weight hydroxy (Cl -C6)alkyl (Cl - C6)alkyl cellulose polymer may range from 3 to 8% by weight, preferably from 4 to 7% by weight relative to the total weight of the film.

The amount of high average molecular weight hydroxy (C !-C6)aikyi (Cl - C6)alkyl cellulose polymer may range from 0.5 to 2.5% by weight, preferably from 1 to 2% by weight relative to the total weight of the preparatory composition.

The amount of high average molecular weight hydroxy (Cl -C6)alkyl (Cl- C6)alkyl cellulose polymer may range from 1.0 to 7% by weight, preferably from 2 to 4% by weight relative to the total weight of the film

Additional water soluble film forming polymer

According to an embodiment, the film may comprise an additional water soluble film forming polymer that is different from the water soluble film, forming polymer chosen among hydroxy (Cl-C6)alkyl (Cl -C6)alkyl cellulose. The additional water soluble film forming polymer may be chosen among hydroxy (Cl -C6)alkyl cellulose such as hydroxypropyl cellulose or hydroxyethyl cellulose, polyvinyl pyrolidone, carboxy (Cl-C6)alkyl cellulose such as carboxy methyl cellulose, pullulan, polyvinyl alcohol and a mixture thereof.

According to a particular embodiment, the additional water soluble film forming polymer is chosen among hydroxy (C l-C6)alkyl cellulose such, as hydroxypropyl cellulose, which may be supplied by Ashland under the name lucel E 50, hydroxyethyl cellulose like the one supplied by Ashland under the trade name Natrosol, and mixtures thereof.

According to a particular embodiment, the additional water soluble film forming polymer is polyvinyl alcohol, like the one sold under the trade name Selvol 540 SM by Sekisui Specialty Chemicals.

According to a particular embodiment, the additional water soluble film forming polymer is a carboxy (C l-C6)a!kyl cellulose, such as carboxymethyl cellulose.

The amount of active material of additional water soluble film forming polymer may range from 0.1 to 10% by weight, preferably from 0.5 to 7% by weight, even more preferably from 1 to 5% by weight, relative to the total weight of the preparatory composition.

The amount of active material of additional water soluble film forming polymer may range from 0.1 to 10% by weight, preferably from 1 to 8% by weiglit, and even more preferably from 4 to 8% by weight, relative to the total weight of the film.

The total amount in active material of water soluble film forming polymer (i.e. water soluble film formin polymer chosen among hydroxy (C 1 -C6)alkyl (C 1 -C6)alkyl cellulose and additional film forming polymer) may range from 3 to 20% by weight, preferably from 3 to 15% by weight, relative to the total weight of the film.

According to a particular embodiment, high molecular weight hydroxy (C 1 - C6)alkyl cellulose such as hydroxypropyl methyl cellulose, low molecular weight hydroxy (C 1 -C6)alkyl cellulose such as hydroxypropyl methyl cellulose, polyvinyl pyrolidone, and/or polyvinyl alcohol are used as water soluble film forming polymers. POLYOL

The foaming cleansing film according to the invention contains a water miscibie polyol or a mixture of polyo!s.

For the purpose of the present invention, the terra "polyol" should be understood to mean any water miscibie at room temperature (25 °C) organic molecule comprising at least two free hydroxy! groups.

The water miscibie polyols advantageously suitable for the formulation of the foaming cleansing film according to the present invention are those having, in particular, from 2 to 20 carbon atoms, preferably from 2 to 10, even more preferably from 2 to 6 carbon atoms.

Among water miscibie polyols, the following may be cited: glycerine, 1,3- propanedio!, isoprene glycol, pentylene glycol, hexylene glycol, glycerol, glycols such as ethylene glycol, propylene glycol, butylene glycol, diethylene glycol, and dipropylene glycol, polyglycerols wit 2 to 6 repeating units, for instance diglycerol, erythritol, arabitol, adonitol, sorbitol, duicitol, glucose, fructose, xylose, trehalose, sucrose, maltose, saccharose and lactose, and mixtures thereof.

According to a preferred embodiment, the water miscibie polyol is glycerine.

The water miscibie polyol amount may range from 0.1 to 20% by weight, in particular between 1 and 10% by weight, preferably between 2 and 5 % by weight, relative to th total weight, of the preparatory composition.

The water miscibie polyol amount may range from 0.5 to 40% by weight, preferably from 4 to 25% by weight, more preferably from 7 to 17% by weight, relative to the total weight of the film. SURFACTANT SYSTEM

The foaming cleansing film according to the invention contains a surfactant system comprising at least a soap and at least one foaming surfactant.

SOAP

Generally the soap used is metal soap of fatty acid with carbon chain ranging from C14 to C22, more preferably from C 14 to CI 8. The fatty-acid can in particular be selected among myristic acid, stearic acid, palmitic acid, and mixtures thereof.

The metal ion of the metal soap may be an alkaline metal like sodium or potassium salt, silicate, aluminate, and mixtures thereof.

Alkalis metal sources, which may be used for saponification of fatty acid according to the invention, includes metal hydroxides like sodium hydroxide and potassium hydroxide, metal silicates like sodium silicate, potassium silicate and metal alum i nates like sodium aluminate and potassium aluminate. In a particular embodiment, metal hydroxide is used, preferably sodium hydroxide or potassium hydroxide, and mixtures thereof.

The metal soaps that may be used include sodium stearate, potassium stearate, sodium mynstate, potassium myristate, sodium palmitate, potassium palmitate and their mixtures.

The neutralization rate of fatty acid may range from 70 to 100 %, preferably

In a particular embodiment, a mixture of sodium hydroxide and potassium hydroxide is used. In a particular embodiment, the amount of sodium hydroxide and potassium hydroxide is adjusted in such way. so that neutralization of fatty acid by sodium hydroxide ranges from 25 to 45%, preferably from 30 to 35%, and neutralization of fatty acid by potassium hydroxide ranges from 45 to 65%, preferably from. 50 to 55%.

Total fatty acid and/or metal soap content in the preparatory composition may range from 1 to 15% by weight, preferably from 3 to 12% by weight and more preferably from 8 to 10% by weight, relative to the total weight of the preparatory composition.

Total fatty acid and/or metal content in the film may range from 5 to 45% by weight, preferably from 20 to 40% by weight and more preferably from 25 to 35% by weight, relative to the total weight of the film.

FOAMING SURFACTANT

The foaming cleansing film, according to the invention contains one or more surfactants, preferably one or more foaming surfactants.

Foaming surfactants are detergents and differ from emulsifiers in the value of their HLB (Hydrophilic-Lipophilic Balance), the HLB being the ratio of the hydrophi!ic part to the lipophilic part ia the molecule. The term "HLB" Is well known to a person skilled in the art and is described, for example, in "The HLB system. A time-saving guide to Emulsifier Selection" (published by ICI Americas inc., 1984). For emulsifiers, the HLB generally ranges from 3 to 8 for the preparation of W/O emulsions and from 8 to 8 for the preparation of O/W emulsions, whereas foaming surfactants generally have an HLB of greater than 20.

The surfactants are preferably selected from anionic, amphoteric (or zwitterionic), nonionic and/or cationic foaming surfactants, and mixtures thereof.

According to a particular embodiment, the foaming surfactant is chosen among amphoteric surfactant(s), anionic surfactant(s) and a mixture thereof.

In a preferred embodiment, the surfactant is in the form of a dry powder.

The surfactant may be present in an amount ranging from 0.1 to 15% by weight, preferably between 1 and 10% by weight, and more preferably between 1.5 and 5% by weight, relative to the total weight of the preparatory composition.

The surfactant may be present in an amount ranging from 0.5 to 35% by weight, preferably from 3 to 25% by weight, and more preferably from 5 to 15% by weight, relative to the total weight of the film.

Anionic surfactants

The film according to the invention may comprise one or more anionic surfactants.

The term anionic surfactant means a surfactant having only anionic groups as ionic or ionizable groups.

hi the present description, an entity is qualified as "anionic" when it has at least one permanent negative charge or when it can be ionized by a negatively charged entity, under the conditions of use of the composition of the invention (medium, pH, for example) and containing no cationic charge.

The anionic surfactants may be sulfate(s) or sulfonate(s) which have at least one sulfate group (-OSO3H or -OSO3^"), and/or a sulfonate group (-SO3H or -SO3), or else carboxylic or carboxylate surfactants having at least one carboxyiic acid group (-COOH or -COO^"). It is understood that the anionic carboxyiate surfactants may include one or more sulfate or sulfonate groups; sulfonate anionic surfactants may optionally fu rther comprise one or more sulfate or carboxyiate groups; and sulfate anionic surfactants may optionally further comprise one or more carboxyiate or sulfonate groups.

Anionic surfactants which may be used include alkyl sulfates, alkyl ether sulfates, alkylamido ether sulfates, alkylaryl poiyether sulfates, monoglyceride sulfates, alkyl sulfonates or alpha olefin sulfonates, alkylamide sulfonates, alkylarylsulfonates, paraffin sulfonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates, alkylamide sulfosuccinates, alkyl sulfoacetates, acy!sarcosinates, acylgiutamates, alkyl sulphosuccinamates, acylisethionates and N-acyl taurates, salts of alkyl monoesters and polyglycosidepolycarboxylic acids, acyl lactylates, N-acyl glycinates, salts of D- galactoside-uronic acids, salts of alkyl ether carboxylic acids, alkyl aryl ether carbox lic acid salts, salts of alkyl amidoether carboxylic acids, sulfoacetates, sulfolaurates, and the corresponding non-salt forms all of these compounds, the alkyl and acyl groups of all these compounds containing from 6 to 40 carbon atoms, especially 14 to 30 carbon atoms, more preferably from 16 to 22 carbon atoms; and aryl means phenyl group. These compounds may be ethoxylated and then preferably comprise from 1 to 50 ethylene oxide units.

Ethylene polyoxyaikylenated (C6-C24) (amido) ether carboxylic acids and salts thereof may also be cited, in particular those comprising from 2 to 50 alkylene oxide groups, in particular, such as sold by the company KAO under the names A YPO,

The more preferred alkyl (C6-C24) (amido) ether carboxylic acids correspond to the following formula:

R,— OC₂HJ— OCH₂COOA (1 )

wherein:

- Rl represents a radical or a mixture of linear or branched C8-C22 alkyi or C8-C22 alkenyl, a alkyi (C8-C9) phenyl radical, a R2CONH-CH2-CH2- group with R2 denoting an alkyi radical linear or branched alkenyl in C9-C21; preferably Rl being an alkyl radical having 8 to 20 carbon atoms, preferably from 8 to 18 carbon atoms and aryl preferably denoting phenyl,

- n is an integer or decimal number (average value) which may vary from 2 to 24 and preferably 2 to 10,

- A denotes H, ammonium, Na, , Li, Mg or monoethanolamine or triethanoiamine. It is also possible to use mixtures of compounds of formula (1), in particular mixtures in which the Rl groups differ.

Poiyoxyallcylenated (C6-C2 ) (amido) ether carboxylic acids preferably used in the present invention are selected from those- of formula (1) wherein:

- Rl denotes a radical or a mixture of (Ci2-Ci4)alkyl radicals, cocoyl, oleyl, a nonyl or octylphenyl radical,

- A denotes hydrogen or sodium, and

- n is from 2 to 20 and preferably 2 to 10.

Folyoxy(C6-C24)alkylenated ether carboxylic acids and their salts are preferably used, and also poiyoxyallcylenated (C6-C24)alkylamido ether carboxylic acids and salts thereof; in particular those having from 2 to 15 alkylene oxide groups.

Even more preferably, one can use the compounds of formula (1) wherein R is a C12 alky] radical, A denotes hydrogen or sodium and n is from 2 to 10.

Salts are especially selected from alkali metal salts, especially sodium, ammonium salts, amine salts, amino alcohol such as triethanoiamine or monoethano!amine, and magnesium salts.

Preferably, the anionic surfactants are chosen from, alone or as a mixture:

- (C6-C24)alkylsulfates. especially in C12-C20,

- (C6-C24)alkyl ether sulfates, especially in C12-C2G, preferably containing from 2 to 20 ethylene oxide units,

(C6-C24)a!kylsuifosuccmates, especially in C12-C20, including Iaur lsul fosuccinates,

- (C6-C24)alkyl ether sulfosuccinates, especially in C12-C20.

(C6-C₂4)acyl sarcosinates, especially in C 12-C20, including palmitoylsarcosinates and lauroylsarconsinates,

- (CVC₂4)alkyl ether carboxylates, preferably (Ci₂-C₂o)alkyl ether carboxylates,

- (C6-C24)acyl isethionates, preferably (Ci2-€ss)acyl isethionates, like cocoyl isethionates,

- polyoxyalkylenated (C₆-C24)alkyl (amido) ether carboxylic acids and salts thereof, in particular those comprising from 2 to 50 alkylene oxide groups, especially ethylene,

- (C.6-C₂4)acylgiutamates, especially in C12-C20, - (C6-C->4)acylglycbates, especially in C12-C20,

particularly in the form of alkali or alkaline earth metal, ammonium, amine or aminoalcohol.

More Preferably, the anionic surfactant is chosen from (C6-C.₂ )acyl isethionates, (Ce-C24)acyl isethionates, alpha olefin sulfonates, their alkali salts, and mixtures thereof.

Amphoteric and zwittenonic foaming surfactants

The film according to the invention may also comprise one or more amphoteric surfactant.

The amphoteric surfactants that may be used in the invention may be optionally quatemized secondary or tertiary aliphatic amine derivatives, in which the aliphatic group is a linear or branched chain comprising from 8 to 22 carbon atoms, said amine derivatives containing at least one anionic group, for instance a carboxylate, sulfonate, sulfate, phosphate or phosphonate group.

Mention may be made in particular of (Cg-C₂o)alkylbetaines, sulfobetaines, (Cg-C2o)alkylsuifobetaines, (C«-C2o)alkylamido(Ci-C6)alkylbetaines, such as cocamidopropylbetaine, and (Cs-C2o)alkylamido(Ci-C6)alkyisulfoheuiines, and mixtures thereof.

Among the optionally quatemized secondary or tertiary aliphatic amine derivatives that may be used, mention may also be made of the products of respective structures (Al) and (A2) below:

(Al) Ra-CO (Z)CH2-(CH2)m-N Rb)(Rc)(CH₂COO^')

in which:

Ra represents a (Oo-C3o)alkyl or alkenyl group derived from an acid

Ra-COOH preferably present in hydrolyzed coconut oil, a heptyl group, a nonyl group or an undecyl group,

Rb represents a β-hydroxyethyl group,

Rc represents a carboxymethyl group,

m is equal to 0, 1 or 2,

Z represents a hydrogen atom or a hydroxyethyl or carboxymethyl group; (A2) _a-CON(Z)CH₂-{CH2)_m-N(B)(B')

in which:

B represents -CH₂CH₂OX', with X' representing -C b-COOH, CH2-COOZ',

-CH2CH2-COOH, ~CH₂CH₂~COOZ\ or a hydrogen atom,

B' represents -(CH₂)_Z-Y', with z = 1 or 2, and Y' representing -COOH, -CQQZ\ -CH2-CHOH-SO3H or -CHa-CHOH-SOaZ',

m' is equal to 0, 1 or 2,

Z represents a hydrogen atom or a hydroxyethyl or carboxymethyl group,

Z' represents an ion resulting from an alkali or alkaline-earth metal, such as sodium, potassium or magnesium; an ammonium ion; or an ion resulting from an organic amine and in particular from an amino alcohol, such as monoethanolamine, diethanolamine and triethanoiamine, monoisopropanolamine, diisopropanolamine or triisopropanolamine, 2-amino-2-methyl- 1 -propanol, 2-amino-2-methyl- 1 ,3-propanediol and tr!s(hydroxymetfayi)aminonietliane₅

a^! represents a (Cio-C3o)alkyl or alkenyi group of an acid Ra'COOH preferably present in hydrolyzed linseed oil or coconut oil, an alkyl group, in particular a CI 7 alkyl group, and its iso form, or an unsaturated C17 group.

Among the compounds corresponding to formula (A2) in which X' represents an hydrogen atom, mention may be made of compounds classified in the CTFA dictionary, under the names sodium cocoamphoacetate, sodium lauroamphoacetate, sodium caproamphoacetate and sodium capryioamphoacetate.

Compounds corresponding to formula (A2) may be (C^'8-C₂o)alkylamphoacetates and (Cg-C₂o)alkylamphodiacetates and mixtures thereof.

Other compounds corresponding to formula (A2) are disodium cocoamphodiacetate, disodium lauroamphodiacetate, disodium caproamphodiacetate, disodium capryloamphodiacetate, disodium cocoamphodipropionate, disodium lauroamphodipropionate, disodium caproamphodipropi onaie, disodium capryloamphodipropionate, lauroamphodipropionic acid and cocoamphodipropionic acid.

Examples that may be mentioned include the cocoamphodiacetate sold by the company Rhodia under the trade name Miranoi® C2M Concentrate, the sodium cocoamphoacetate sold under the trade name Miranol Ultra C 32 and the product sold by the company Chimex under the trade name Chimexane HA. Use may also be made of the compounds of formula (A3);

(A3) Ra-^<-N I--CH(Y")-(CH2)n-C(0)- H-(CH2)n'-N(Rd)(R_e) in which:

- R_a" represents a (Cio-C.3o)alkyl or alkenyl group of an acid R_a-C(0)OH preferably present in hydrolysed linseed oil or coconut oil;

- Y" represents the group -C(0)OH, -C(0)OZ"_s -CH₂-CH(OH)-S0₃H or the group -CH2-CH(OH)-S03-Z"_» with Z" representing a cationic counterion resulting from an alkali metal or alkaline-earth metal, such as sodium, an ammonium ion or an ion resulting from an organic amine;

- Rd and R_e represent, independently of each other, a

or hydroxyalkyl radical; and

- n and n' denote, independently of each other, an integer ranging from 1 to 3. Among the compounds corresponding to formula (A3), mention may in particular be made of the compound classified in the CTFA dictionary under the name sodium diethylaminopropyl cocoaspartamide, such as the one sold by the company Chimex under the name Chimexane HB.

Preferably, the amphoteric surfactants are chosen from (Cfi-C2o)alkylbeiaines, (Cg-C2o)alky iamido(C i -C6)alkylbetaines, (Ce-Caojalky lamphoacetates and (Cg-C2o)alkylamphodiacetates, and mixtures thereof.

Nonionic foaming surfactant

The film according to the invention may comprise one or more non-ionic surfactant.

The nonionic foaming surfactants that may be present in the foaming cleansing film of the invention may be chosen from alkyl polyglucosides (APG), especially represented by formula (Nl ):

wherein:

- Ri represents a linea or branched alkyl or alkenyl radical having 6 to 24 carbon atoms, especially 8 to 18 carbon atoms, or an alkylphenyl radical whose linear or branched alkyl radical comprises from 6 to 24 carbon atoms, especially 8 to 18 carbon, atoms,

- Ri represents an alkylene radical having 2 to 4 carbon atoms,

- G is a sugar unit containing 5 to 6 carbon atoms,

- 1 is a value ranging from 0 to 10, preferably from 0 to 4,

- v is a value ranging from 1 to 15, preferably from 1 to 4.

Preferably, the alkylpoly glycoside surfactants are compounds of formula (Nl) described above wherein:

- Ri denotes a linear or branched saturated or unsaturated alley! radical having 8 to 18 carbon atoms,

- i½ represents an alkylene radical having 2 to 4 carbon atoms,

- 1 is a value ranging from 0 to 3, preferably equal to 0,

- G denotes glucose, fructose or galactose, preferably glucose,

- the degree of polymerization, i.e. the value of v can range from 1 to 15, preferably from 1 to 4; the average degree of polymerization is more particularly between

1 and 2.

Glycosidic linkages between the sugar units are generally 1-6 or 1-4, preferably

! -4.

Preferably, the alkylpolyglycoside surfactant is an alkylpolyglucoside surfactant, even more preferably an C8-C16 alkylpolyglucosides, and particularly preferably chosen among decylglucosides, caprylyl/capryl glucosides, laurylg!ucoside, cocoylgiucoside, caprylylglucoside, and mixtures thereof.

Among the commercial products, the following product may be cited: products sold by COGNIS under the names PLANTAREN® (600 CS / U, 1200 and 2000) or PLANTACARE® (818, 1200 and 2000); products sold by SEPPIC under the names ORAMIX® CG 1 10 and ORAM1X® NS 10; products sold by BASF under the name LUTENSOL GD 70 or products sold by the company CHEM Y under the name AGIO LK.

Preferably, C8-C16 alkylpolyglucosides is used, in particular chosen from decylglucoside, caprylyl/capryl glucoside, laurylglucoside, cocoylgiucoside, caprylylglucoside, and mixtures thereof. Cationic foaming surfactant

According to one embodiment, the film according to the invention may comprise at least one catiottic surfactant. They are advantageously chosen from optionally polyoxyalkylenated primary, secondary or tertiary fatty amine salts, quaternary ammonium salts, and mixtures thereof.

Mention may be made in particular of:

- quaternary ammonium salts having formula (la):

in which:

the groups Rg to Ru, which may be identical or different, represent a linear or branched aliphatic group containing from 1 to 30 carbon atoms, or an aromatic group such as aryl or alkylaryl, at least one of the groups Rg to Ru containing from 8 to 30 carbon atoms and preferably from 12 to 24 carbon atoms; it being possible for the aliphatic groups to comprise heteroatoms such as, in particular, oxyge , nitrogen, sulfur or halogens; and

X^" is an anion that could be chosen from the group consisting of halides, phosphates, acetates, lactates. (Ci-O alkyl sulfates, (C ·, -C4)alkyl sulfonates and (Ci-C4)aikylarylsulfonates.

The aliphatic groups are chosen, for example, from (Ci-C3o)alkyl, (C;.C₃o)alkoxy, (Ci-Cc^polyoxyalkyiene, (Ci-C3o)alkylamide, (Ci2-C22)alkyl(C2-C6)alkylamido, (Ci2-C22)alkyl acetate and ydroxy(C i-C₃o)alkyl groups.

Mention may be made of tetraalkylarnmonium halides, preferably chlorides, such as dialkyldimethylammoniu or alkyltrimethylammonium chlorides in which the alkyl group comprises from 12 to 22 carbon atoms, particularly behenyltrimethylammonium, distearyldimethylammonium, cetyltrimethylammonium, and benzyidimethylstearylamrnonium chlorides.

Mention may also be made of palmityiamidopropyltrimethyjammonium halides, preferably chlorides, or stearamidopropyldimethyl(myristyl acetate^'l-ammonium halides, preferably chlorides, such as the product sold under the name Ceraphyl® 70 by tie company VAN DY . - imidazoline quaternary ammonium salts having formula (Ila):

in which :

R.52 represents an alkenyi or alkyl group comprising from 8 to 30 carbon atoms, for example fatty acid derivatives of tallow;

RB represents a hydrogen atom, a (Ci-C4)alkyl group or an alkenyi or alkyl group comprising from 8 to 30 carbon atoms;

Ri4 represents a (Ci -Chalky! group;

Ri5 represents a hydrogen atom or a (d-C^alky! group;

X^" is an anion, preferably chosen from the- group consisting of halides, phosphates, acetates, lactates. (Ci-C4)aikyi sulfates, (C > -Chalky] sulfonates and (C ·, -C4)alkylaryisulfonates;

Ri2 and R preferably denote a mixture of alkenyi or alkyl groups containing from 12 to 21 carbon atoms, for example fatty acid derivatives of tallow, R14 denotes a methyl group, and R1 5 denotes a hydrogen atom. A product of this kind is sold for example under the name Rewoquat® W 75 by the company Rewo.

- quaternary di- or tri ammonium salts having formula (111a):

2+

19

R₁₆-N— (CH₂)₃- - R₂₁ 2X

(Ilia)

^¾18 in which:

Ri6 denotes an alkyl group containing from 16 to 30 carbon atoms, which is optionally hydroxylated and/or interrupted with one or more oxygen atoms,

Ri7 represents a hydrogen atom or an alkyl group containing from 1 to 4 carbon atoms or a group -(CH2)3-N⁺(Ri6a)(Ri7a)(Risa); wherein Ri6a, Rm, Riga, which may be identical or different, are chosen from hydrogen and an alkyl group comprising from 1 to 4 carbon atoms

R;8, Ri , Rio and Rai, which may be identical or different, are chosen from hydrogen and an alkyl group comprising from 1 to 4 carbon atoms; and

X^' is an anion preferably chosen from the group consisting of haiides, acetates, phosphates, nitrates, (Ci-C4)a!lcyl sulfates, (Ci-C4)alkylsulfonates and (Ci-C4)alkylarylsulfonates, in particular methyl sulfate and ethyl sulfate.

Such compounds are, for example, Finquat CT-P, sold by the company Finetex (Quaternium 89), and Finquat CT, sold by the company Finetex (Quatemium 75).

- quaternar ammonium salts containing one or more ester functions having the following formula (IVa):

X (|Va)

in which:

R22 is chosen from (Ci-Cejalkyl groups and hydroxy (C 1 -C6)alkyl or dihydroxy(Ci-C₆)alkyl groups;

R23 is chosen from the group R26-C(=0)-; hydrocarbon-based linear or branched, saturated or unsaturated C1-C22 groups R27; and a hydrogen atom;

R25 is chosen from the group ]½-€(=())-: hydrocarbon-based linear or branched, saturated or unsaturated Ci-Ce groups R29; and a hydrogen atom;

R24, R26 and R28, which may be identical or different, are chosen from linear or branched, saturated or unsaturated C7-C2! hydrocarbon-based groups;

r, s and t, which may be identical or different, are integers ranging from 2 to 6; rl and tl . which may be identical or different, are equal to 0 or 1;

r2 + rl = 2 r and tl + 12 = 2 t;

y is an integer ranging from 1 to 10;

x and z, which may be identical or different, axe integers ranging from 0 to 10; the sum x + y + z is from 1 to 15_»

X^* is an anion; with the proviso that, when x is 0 then R23 denotes R27, and that when z is 0 then 25 denotes R29.

The alkyl groups R₂₂ may be linear or branched, and more particularly linear. Preferably, R22 denotes a methyl, ethyl hydioxyethyl or dihydroxypropyl group, and more particularly a methyl or ethyl group.

When R23 is an I½? hydrocarbon group, it may have from 12 to 22 carbon atoms, or may have from 1 to 3 carbon atoms.

When R25 is an R29 hydrocarbon group, it preferably has 1 to 3 carbon atoms.

Advantageously, R₂4, R26 and R₂8, which are identical or different, are chosen from linear or branched, saturated or unsaturated Cn-C₂s hydrocarbon groups, and more particularly from linear or branched C11-C21 alkyl and alkenyl groups.

Preferably, x and z, which may be identical or different, are equal to 0 or 1.

Advantageously, y is equal to 1.

Advantageously, the sum x + y + z is from 1 to 10.

Preferably, r, s and t, which may be identical or different, are equal to 2 or 3. and even more particularly are equal to 2.

The anion X- is preferably a halide, preferably chloride, bromide or iodide, a (O-G alkyl sulfate, (C]-C4)alkyl sulfonate or

sulfonate, methanesulfonate. phosphate, nitrate, tosylate, an anion derived from an organic acid, such as acetate or lactate, or any other anion that is compatible with the ammonium comprising an ester function. The anion X^" is more particularly chloride, methyl sulfate or ethyl sulfate,

Use is made more particularly, in the film according to the invention, of the ammonium salts having formula (IVa) in which:

- R22 denotes a methyl or ethyl group,

- x and y are equal to I ,

- z is equal to 0 or 1,

- r, s and t are equal to 2,

- R23 is chosen from the group R2g-C(=0)-; methyl groups, ethyl groups or hydrocarbon-based C14-C22 groups; and. a hydrogen atom,

- R25 is chosen from the group R2g~C(=0)-; and a hydrogen atom, - R24, R26 and R28, which may be identical or different, are chosen from linear or branched, saturated or unsaturated C 13-C 17 hydrocarbon groups, and preferably from linear or branched, saturated or unsaturated C13-C17 alky! and aikenyi groups.

The hydrocarbon-based groups are advantageously linear,

Among the compounds of formula (IVa), examples that may be mentioned include salts, in particular the chloride or methyl sulfate of diacyioxyethyldimcthylammonium, diacyloxyefhylhydroxyethyhnethylammonium, monoacyioxyetiiyldihydroxyetlryimethylaiiimonium, triacyloxyethylmethylammonium or monoacyloxyethylhydroxyethyldimethylammonium, and mixtures thereof. The acyl groups preferably contain 14 to 18 carbon atoms and are obtained more particularly from a plant oil, such as palm oil or sunflower oil When the compound contains several acyl groups, these groups may be identical or different.

These products are obtained, for example, by direct esterifi cation of triethanoiamine, tri isopropanolamine, alkyidiethano!amine or alkyldiisopropanolamine, which are optionally oxyalkylenated, with fatty acids or with fatty acid mixtures of plant or animal origin, or by transesterifi cation of the methyl esters thereof. This esterifi cation is followed by a quaternizalion by means of an alkylating agent, such as an alkyl halide, preferably methyl or ethyl halide, a diaikyl sulfate, preferably methyl or ethyl sulfate, methyl methanesulfonate, methyl para-toluenesulfonate, glycol chlorohydrin or glycerol chlorohydrin. Such compounds are, for example, sold under the names Dehyquart® by the company Henkel, Stepanquat® by the company Stepan, Noxamium® by the company Ceca or Rewoquat® WE 18 by the company Re o-Witco.

The film according to the invention may contain, for example, a mixture of quaternary ammonium monoester, diester and triester salts with a weight majority of diester salts. Use may also be made of the ammonium salts containing at least one ester function that are described in patents US-A-4 874 554 and US-A-4 137 180. Use may also be made of behenoylhydroxypropyltrimethylammonium chloride, for example, sold by the company ao under the name Quartamin BTC 131.

Preferably, the ammonium salts containing at least one ester function contain two ester functions. Preferably, the cationic surfactants are chosen from the compounds of formula (la) and the compounds of formula (IVa), preferably from cetyltrimethylammonium, behenyitrimethylammonium, and dipalmitoylethy!hydroxyethylmcthylammoniiim salts, and mixtures thereof, and more particularly from behenyitrimethylammonium chloride or methosulfate, cetyltrimethylammonium chloride or methosulfate, and dipalmitoylediylhydroxyethylamrnonium chloride or methosulfate, and mixtures thereof. Even more preferentially, the cationic surfactant is a behenyltrirnethylammonium salt.

According to a particular embodiment, the foaming cleansing film comprises: a) at least one water soluble film forming polymer chosen among hydroxy (Cl- C6)alkyl (Cl-C6)alkyl cellulose such as hydroxypropyl methyl cellulose,

b) at least a water miscible polyol, in particular chosen among glycerine, 1,3- propanediol, isoprene glycol, pentyiene glycol, hexyiene glycol, glycerol, glycols such as ethylene glycol, propylene glycol, butylene glycol, diethylene glycol, and dipropylene glycol, polyglycerols with 2 to 6 repeating units, such as diglycerol, erythritoL arabitol, adonitol, sorbitol, dulcitol, glucose, fructose, xylose, trehalose, sucrose, maltose, saccharose and lactose, and mixtures thereof and more particularly being glycerine,

c) at least a surfactant system comprising at least a soap and at least one foaming surfactant, the fatty acid of the soap being with carbon chain ranging from CI 4 to

€22, more preferably from CI 4 to CI 8, and in particular chosen among myristic acid, stearic acid, palmitic acid, and the source of saponification for the soap being a metal hydroxide, for example potassium hydroxide or sodiu hydroxide or mixtures thereof, and the foaming surfactant being chosen among amphoteric surfactant(s). anionic surfactant(s) and a mixture thereof, and

d) from 10 to 20% by weight of water relative to the total weight of the film.

According to a particular embodiment, the foaming cleansing film comprises: a) at least one water soluble film forming polymer chosen among hydroxy (Cl- C6)alkyl (Cl -C6)alkyl cellulose such as hydroxypropyl methyl cellulose,

b) at least a water miscible polyol, in particular chosen among glycerine, 1,3- propanediol, isoprene glycol pentyiene glycol, hexyiene glycol, glycerol, glycols such as ethylene glycol, propylene glycol, butyl ene glycol, diethylene glycol, and dipropylene glycol, polyglycerols with 2 to 6 repeating units, such as diglycerol, erythritol. arabitol, adonitol, sorbitol, dulcitol, glucose, fructose, xylose, trehalose, sucrose, maltose, saccharose and lactose, and mixtures thereof and more particularly being glycerine,

c) at least a surfactant system, comprising at least a soap and at least one foaming surfactant, the fatty acid of the soap being with carbon chain ranging from CI 4 to C22, more preferably from C14 to CI S, and in particular chosen among myristic acid, stearic acid, palmitic acid, and the source of saponification for the soap being a metal hydroxide, for example potassium hydroxide or sodium hydroxide or mixtures thereof, and the foaming surf ctant being chosen among amphoteric surfactant(s), anionic surfactant(s) and a mixture thereof,

d) from 10 to 20% by weight of water relative to the total weight of the film, and

e) at least one additional water soluble film forming polymer chosen among hydroxy (Cl-C6)alkyl cellulose such as hydroxypropy! cellulose, polyvinyl pyrolidone, carboxy (Cl ~C6)alkyl cellulose such as carboxy methyl cellulose, pullulan, polyvinyl alcohol and a mixture thereof.

FILLERS

The foaming cleansing film according to the invention may comprise one or more fillers.

The filler may be chosen from clay, cellulose, talc, and mixtures thereof.

Useful clay according to the invention is hydrophilic. The expression hydrophilic clay is understood to mean a clay capable of swelling In water; this clay swells in water and forms a colloidal dispersion after hydration.

Clays are products well known per se, which are described for example in the book "Mineralogie des argil es, S. Caillere, S. Benin, M. Rautureau, 2nd edition 1982, Masson", whose teaching is included herein by way of reference.

Clays are silicates containing a cation which may be chosen from the calcium, magnesium, aluminium, sodium, potassium and lithium cations, and mixtures thereof. By way of examples of such products, there may be mentioned clays of the family of smectites such as montmorillonites, hectorites, bentonites, beidellites and saponites, and of the family of vermicuiites, stevensite, chlorites.

These clays may be of natural or synthetic origin. Preferably, clays are used which are cosmetically compatible and acceptable with keratinous materials such as the eyelashes and the skin.

As hydrophilic clay, there may be mentioned smectites such as saponites, hectorites, montmorillonites, bentonites. beidellite.

As hydrophilic clay, there may be mentioned synthetic hectorites (also called laponites) such as the products sold by the company Laporte under the name Laponite XLG, Laponite RD, Laponite RDS (these products are sodium and magnesium silicates and in particular sodium, lithium and magnesium silicates): bentonites such as the product sold under the name Bentone HC by the company RHEOX; magnesium and aluminium silicates, in particular hydrated, such as the products sold by the company Vanderbilt Company under the name Veegum ultra, Veegum HS, Veegum DOT, or alternatively calcium silicates and in particular- that in synthetic form sold by the company under the name Microcel C.

According to a preferred embodiment, the filler is a clay, preferably from smectite group, and in particular chosen among montmorillonites like sodium montmorrillonite, potassium montmorillonite, and calcium montmorillonite; bentonite like sodium bentonite, potassium bentonite, calcium bentonite; and mixtures thereof. In a particular embodiment, the filler is sodium montmorillonite.

According to an embodiment, the filler is a cellulose powder such as mycrocristalline cellulose.

As macrocrystalline cellulose, mention may be made for example of the compound sold under the trade name Avicel PH 105 NF by FMC Corporation.

Talc are hydrated magnesium silicates usually comprising aluminium silicate. Crystalline structure of talc consists in repeated layers of brucite between layers of silica.

As talc suitable according to the invention, mention may be made for example of the one sold under the trade name Luzenac Pharma M by the company Imerys, the one sold under the trade name Micro Ace P3 by Nippon talc) or the one sold under the trade name Luzenac 00 by Imer s.

According to a preferred embodiment, the film comprises fillers chosen from clay, preferably from smectite group, more preferably from montmoriilonite, and in particular sodium montmorrillonite; and cellulose powders.

The filler may be present in the film according to the present invention in an amount ranging from 3 to 8% by weight, preferably from 4 to 7% by weight, and more preferably from 5 to 6% by weight, relative to the total weight of the preparatory composition.

The filler may be present in the film according to the present invention in an amount ranging from 10 to 35% by weight, preferably from 15 to 30% by weight, and more preferably from 17 to 25% by weight, relative to the total weight of the film.

ADDITIVES or OPTIONAL INGREDIENTS

The foaming cleansing film according to the invention may contain various water-soluble or liposoluble additives, chosen from those conventionally used in skincare or makeup-removing products, insofar as these additives and the amounts thereof do not harm the qualities desired for the film according to the invention.

The foaming cleansing film in accordance with the present invention may thus comprise the following additives: viscosity adjuster or builder, antibacterial agents, conditioning agents, biological extracts, sun screen agents, exfoliating and/or scrubbing agents, cosurfactants; oil; preserving agents; sequestrants (EDTA and salts thereof); antioxidants; fragrances or perfumes; dyestuffs; encapsulated or non-encapsulated pigments or soluble dyes; hydrophilic or lipophilic, anionic, nonionic, cationic or amphoteric, thickening or dispersing polymers.

The amounts of these various adjuvants are those conventionally used in the field under consideration, for example from 0.01% to 10% of active material of the total weight of the preparatory composition.

These adjuvants and the amounts thereof should be such that they do not modify the property desired for the film of the invention. The mild friction applied to the film according to the invention therefore not only produces lather but may also release said additional benefit agents that may be present into the film. METHOD OF MAKING THE FILM

The film according to the present invention may be made by a casting method as well known to a man skilled in the art.

Preparation of the preparatory composition

Prior to forming the film as such, the following steps may be described: the following ingredients, i.e. water and the water miscible polyol(s) may be blended and mixed. The mixture may be heated until 70 or 80°C, for example 75°C. The water soluble film fomiing polymer may then be added during a vigorous mixing step to avoid polymer agglomeration. Other ingredients, mainly the surfactant, the fatty acid and neutralizer and any optional may then be added. Optional ingredients such as fillers, perfume, dyestuffs and preservatives may be added at a temperature ranging from 25 °C to 45 °C, after a neutralization step.

Film casting

For the formation of a film or "film casting", the here above obtained mixture may be applied to a substrate, for example a non-water soluble transfer paper that does not stick to the finished product after drying. For example, the film may be poured into a film drawing machine where a uniform film is drawn out on a rotating PVC belt. After the mixture is applied to the non-water soluble transfer paper, the mixture is subjected to drying, either in hot oven or room temperature. The film can be pulled out after complete drying of the preparatory composition.

Throughout the description, including the claims, the expression "comprising a" should be understood as being synonymous with "comprising at least one", unless otherwise specified.

The expressions "between ... and ..." and "ranging from ... to ..." should be understood as meaning limits included, unless otherwise specified. The examples that follow illustrate the present invention without limiting the scope thereof.

EXAMPLES

All amounts provided in the following tables are given in weight relative to the total weight in the preparatory composition (i.e. before drying), and relative to the total weight of the film (i.e. after drying) after measurement of the moisture content in a moisture analyzer balance.

The cleansing and personnel care sheets described in the following examples were prepared using the following general process:

1. Water rniscible polyol was added to main vessel containing water preheated 70 °C and mixing was started at low speed,

2. While heating polymer was added to the main vessel and mixing was continued till clear solution was obtained.

3. Surfactants were added to the batch and mixing speed was lowered to decrease foam generation.

4. Fatty acids were added and then allowed to mix for 10 rnin. at 75°C.

5. Finally neutralizer was added at 65°C and stirred for 15 min; and allowed to cool.

6. Finally, perfume and preservatives were added at 45°C.

As far as the casting process is concerned, the preparatory composition was applied on a polyvinyl chloride surface using a film drawn applicator having a thickness of 0.8 to 1 mm. After that the preparatory composition was subjected to drying under hot oven (at 50 °C). The resulting film was pulled out after complete drying of the preparatory composition.

Film Characterization

Humidity tolerance

Small piece (5 cm x 5 cm) of film was taken (just after film casting) in a glass Petridis (without any cover lead) and was subjected to different humid conditions for variable time.

Humidity tolerance was evaluated in laboratory (at 60 relative humidity and 25 °C) and humidity chamber (at 75 relative humidity and 45 °C). Humidity tolerance was monitored in laboratory (at 60 relative humidity and 25 °C) at different time frame, such as after 2 hours, and after 24 hours.

The films were also subjected to humidity chamber (at 75 relative humidity and 45 °C). Humidity tolerance was monitored in humidity chamber (at 75 relative humidity and 45 °C) up to 7 days.

After appropriate storage time, film face wash was taken in hand and touched by fingers to check whether film is soggy or sticky ("Bad") or dry ("Good").

Film solubility

Very small piece (0.5 cm x 0.5 cm) of film was taken and put into a Petridis containing water (at 25 ⁰ C), such that film floats on the water, and time was monitored till first disintegration was happen to the film under zero disturbance to the whole system. Films which showed onset of disintegration within less or equal to 60 seconds are rated as "Good" in terms of film solubility. Whereas, films which showed onset of disintegration at any time of more than 60 seconds are rated as "Bad'^' in terms of film solubility.

It has been observed that "Good" solubility film showed quick (within 10 seconds) dissolution in contact of small quantity of water under gentle rubbing between palms of two hands. Example 1: Cleansing film - evaluation of the humidity tolerance

Cleansing films according to the invention were prepared by the above process and containing the ingredients set forth in the following table 1 :

TABLE 1

Film 1A displays a good humidity tolerance at 60RH after 2 hours of storage at

25 °C.

Film IB displays a good humidity tolerance at 60 RH after 24 hours of storage at 25 °C.

Example 2: Cleansing film - evaluation of humidity tolerance and solubility.

Cleansing film 2 according to the invention was prepared by the above process and contains the ingredients set forth in the following table 2.

TA LE 2

Film 2 displays a good humidity tolerance at 75 RH after 7 days of storage at 45 °C. Film 2 also displays a good solubility.

Example 3: Cleansing film - evaluation of humidity tolerance and solubility. Cleansing film 3 according to the invention was prepared by the above process and contains the ingredients set forth in the following table 3

TABLE 3

Film 3 displays a good humidity tolerance at 75 RH after 7 days of storage at 45 °C. Film 3 also displays a good solubility.

Claims

1. A cleansing foaming film comprising:

a) at least one water soluble film forming polymer chosen among hydroxy (C l-

C6)a!k-yl (Cl -C6)alkyl cellulose,

b) at least a water miscible polyol,

c) at least a soap

d) at least one foaming surfactant, and

d) from 10 to 20% by weight of water relative to the total weight of the film.

2. A cleansing foaming film according the preceding claim, in which the film comprises a mixture of high average molecular weight hydroxy (C3 -C6)alkyl (Cl-C6)alkyl cellulose polymer having an average molecular weight in weight of at least 1000 kDa, and of low average molecular weight hydroxy (Cl-C6)alkyl (Cl -C6)alkyl cellulose polymer having an average molecular weight in weight ranging from 100 kDa to 500 kDa.

3. A cleansing foaming film according to any one of the preceding claims, in which the water soluble film forming polymer is chosen among hydroxypropyimethyl cellulose, ethylhydroxyethyl cellulose and mixtures thereof, and preferably is hydroxypropyimethyl cellulose.

4. A cleansing foaming film according to any one of the preceding claims, in which the water soluble film forming polymer is present in the film in an active material content ranging from 2 to 17 % by weight relative to the total weight of the film, preferably from 3% to 15% by weight, more preferably from 4 to 12% by weight.

5. A cleansing foaming film according to any one of the preceding claims, in which the water miscible polyol is chosen among glycerine, 1 ,3-propanediol, isoprene glycol, pentylene glycol, hexylene glycol, glycerol, ethylene glycol, propylene glycol, butylene glycol, diethylene glycol and dipropylene glycol, polyglycerols with 2 to 6 repeating units, erythntol, arabitol, adonitol, sorbitol, dulcitol, glucose, fructose, xylose, trehalose, sucrose, maltose, saccharose and lactose, and mixtures thereof, and preferably is glycerine.

6. A cleansing foaming film according to any one of the preceding claims, in which the water miscible polyol is present in a range between 0.5 and 40% by weight, in particular between 4 and 25% by weight, preferably between. 7 and 17% by weight, relative to the total weight of the film.

7. A cleansing foaming film according to any one of the preceding claims, in which the foaming surfactant is chosen from anionic, amphoteric (or zwitterionic), nomonic and/or cationic foaming surfactants, and mixtures thereof, the said anionic surfactant being in particular chosen from (C6-C40)alky! sulfates, (C6-C40)alkyl ether sulfates, (C6-C40)alkylamido ether sulfates, (C6-C40)alkylaryl polyether sulfates, monoglyceride sulfates, (C6-C40)alkyl sulfonates or alpha olefin sulfonates, (C6- C40)alkyiamide sulfonates, (C6-C 0)alkylaryisulfonates, paraffin sulfonates, (C6- C40)alkyl sulfosuccinates, (C6-C40)alkyl ether sulfosuccinates, (C6-C40)alkyiamide sulfosuccinates, (C6-C40)aikyl sulfoacetates, (C6-C40)acyisarcosinates, (C6- C40)acylgliitamates, (C6-C40)alkyl suiphosuccinamates, (C6-C40)acylisethionates and N- (C6-C40)acy) taurates, salts of {C6-C40)aikyl monoesters and polyglycosidepolycarboxy ic acids, (C6-C40)acyl lactylates, N-(C6-C40)acyi glycinates, salts of D-galactoside-uronic acids, salts of (C6-C40)alkyl ether carboxylic acids. (C6- C40)alkyl aryl ether carboxylic acid salts, salts of (C6-C40)alkyl amidoether carboxylic acids, sulfoacetates, sulfoiaurates, and mixtures thereof, , the said amphoteric or zwitterionic surfactant being in particular chosen from (C«-C2o)alkylbetaines. sulfobetaines, (Cg-C₂o)alkylsulfobetaines, (Cg-C2o)alkylamido(Ci-C6)alkylbetaines, and (Cg-C2o)alkylamido(C| -C6)aikylsulfobetaines, optionally quatemized secondary or tertiary aliphatic amines such as (Cg-C2o)alkylamphoacetates and (Cg-C2o)alkylamphodiacetates, and mixtures thereof-and mixtures thereof, and. the said nonionic surfactant being in particular chosen from (C6-C24)alkyl polyglucosides , and mixtures thereof.

8. A cleansing foaming film according to any one of the preceding claims, wherein the surfactant is present in an amount ranging from 0.5 to 35% by weight, preferably from 3 to 25% by weight, more preferably from 5 to 15% by weight, relative to the total weight of the film.

9. A cleansing foaming film according to any one of the preceding claims, in which the soap is a metal and/or organic soap of fatty acid with carbon chain ranging from C14 to C22. preferably from C14 to C18, in particular chosen among myristic acid, stearic acid, palmitic acid and with the metal ion being an alkaline metal like sodium or potassium salt.

10. A cleansing foaming film according to the preceding claim, wherein the metal source is chosen among sodium hydroxide, potassium hydroxide, and mixtures thereof.

11. A cleansing foaming film according to any one of claim 8 or claim 9, wherein the neutralization of the fatty acid ranges from 70 to 100%, preferably from 80 to

90%.

12. A cleansing foaming film according to any one of the preceding claims, wherein the soap is present in an amount ranging from 5 to 45% by weight, preferably from 20 to 40% by weight, more preferably from 25 to 35% by weight, relative to the total weight of the film.

13. A cleansing foaming film according to any one of the preceding claims, wherein the film further comprises an additional film forming polymer, preferably chosen among hydroxy (Cl -C6)alkyl cellulose such as hydroxypropyl cellulose or hydroxyethyl cellulose, polyvinyl pyrolidone, carboxy (Cl -C6)alkyl cellulose such as carboxy methyl cellulose, pullulan, polyvinyl alcohol and a mixture thereof.

14. A cleansing foaming film according to the preceding claim, wherein the additional film forming polymer is comprised in the film in an amount in active material ranging from 0.1 to 10% by weight, preferably from 1 to 8% by weight, and even more preferably from 4 to 8% by weight, relative to the total weight of the film.

15. A cleansing foaming film according to any one of the preceding claims, wherein the film further comprises a filler, preferably chosen from clay, cellulose, talc and mixtures thereof.

16. A cleansing foaming film according to the preceding claim, wherein the filler is present in an amount ranging from 10 to 35 % by weight, preferably from 15 to 30% by weight, and even more preferably from 17 to 25 by weight, relative to the total weight of the film.

17. Process for cleansing keratin materials, which consists in dissolving the cleansing foaming film according to any one of claims 1 to 16 in water, in working the obtained mixture into a foam and applying that foam onto the keratin materials and then in rinsing off said foam, especially with water.