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Title:
A HAIR CLEANSING COMPOSITION CONTAINING LOTUS FLOWER OIL AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/036631
Kind Code:
A1
Abstract:
The invention relates to a cosmetic preparation, in particular a composition for hair cleansing and use thereof, the composition comprising surfactant, polymeric thickener, and lotus flower oil. The composition leads to an improvement in the physical-optical properties of the hair, and it is easy to wash out after application on hair. The composition in the present invention leads to significantly improved gliding, detangling and anti-roughness properties of hair. Furthermore, after treatment with the composition in the present invention, hair has better managing properties both in wet condition and in dry condition.

Inventors:
FENG, Ji (1-2-603, HongfujiayuanWuhan, Hubei 0, 420070, CN)
WANG, Yabin (Room 503, Building 27 Village, Wuhan Hubei 3, 430023, CN)
DONG, Chaochun (Room 402, Unit 3 Building, 6 Hubei Wuhan, Wuhan, CN)
WANG, Tan (307-4, Tingtaoguanha, Wuhan Hubei 6, 430056, CN)
BAO, Zhaoxia (Room 101, Unit 2 Building, Wuhan Hubei 0, 430070, CN)
HONG, Xiaopeng (19-2-102, Houhu GardenWuhan, Hubei 3, 430013, CN)
Application Number:
EP2016/065337
Publication Date:
March 09, 2017
Filing Date:
June 30, 2016
Export Citation:
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Assignee:
BEIERSDORF AG (Unnastraße 48, Hamburg, 20253, DE)
International Classes:
A61Q5/12; A61K8/41; A61K8/44; A61K8/46; A61K8/81; A61K8/92; A61Q5/02; C11D1/86; C11D1/90; C11D1/94; C11D3/37; C11D3/38
Foreign References:
EP1728503A12006-12-06
EP1090623A12001-04-11
Other References:
DATABASE GNPD [online] MINTEL; 1 April 2015 (2015-04-01), DI CAI COSMETIC: "Silky & Smooth Shampoo", XP002760729, Database accession no. 3099669
DATABASE GNPD [online] MINTEL; 1 April 2015 (2015-04-01), UNILEVER: "Lasting Softness Shower Cream", XP002760730, Database accession no. 3152051
DATABASE GNPD [online] MINTEL; 1 April 2015 (2015-04-01), DI CAI COSMETIC: "Anti-Dandruff & Moisture Shampoo", XP002760731, Database accession no. 3099671
DATABASE WPI Week 201240, 1 October 2012 Derwent World Patents Index; AN 2012-G45035, XP002760732
DATABASE TKDL [online] Council of Scientific & Industrial Research (CSIR); 1 January 1999 (1999-01-01), GADANIGRAHA (ED): "M??sy?dilepa", XP002760733, Database accession no. RS/413
JEON S ET AL: "Lotus (Nelumbo nuficera) flower essential oil increased melanogenesis in normal human melanocytes", EXPERIMENTAL AND MOLECULAR MEDICINE, SEOUL, KR, vol. 41, no. 7, 1 July 2009 (2009-07-01), pages 517 - 524, XP002571037, ISSN: 1226-3613, [retrieved on 20090731], DOI: 10.3858/EMM.2009.41.7.057
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Claims:
What is claimed:

1. A compositions for cleansing hair, comprising:

- at least one anionic surfactant, at least one amphoteric surfactant and at least one cationic surfactant,

- at least one polymeric thickener containing monomers selected from acrylic acid, methacrylic acid and derivatives of acrylic acid or methacrylic acid, and

- lotus flower oil in an amount of 0.001 to 0.5 % by weight.

2. The composition according to claim 1, characterized in that lotus flower oil is contained in an amount of 0.05 to 0.3 % by weight, preferably 0.15 to 0.25 % by weight, relative to the total weight of the composition.

3. The composition according to claim 1, characterized in that the composition comprises auxiliary components, such as nonionic surfactant, cationic polymer, silicone, anti-dandruff agent, pearlescent agent and colorant, and the composition comprises balance amount of water, so that all the components amount to 100% by weight.

4. The composition according to any of claims 1 to 3, characterized in that the polymeric thickener is selected from the group consisting of, carbomer, acrylates/C 10-30 alkyl acrylate crosspolymer, acrylates copolymer and acrylates crosspolymer-4.

5. The composition according to claim 4, characterized in that the polymeric thickener is Acrylates Copolymer.

6. The composition according to claim 4, characterized in that the polymeric thickener is present in an amount of 0.1 to 10% by weight, preferably 0.2 to 5 % by weight, and more preferably 0.6 to 2.0 % by weight, relative to the total weight of the composition.

7. The composition according to any of claims 1 to 3, characterized in that the anionic surfactant is selected from the group consisting of sulfate, sulfonate, sarcosinate and sarcosine derivatives, preferably alkali- and/or ammonium salts of alkylsulfate and/or alkylethersulfate.

8. The composition according to claim 7, characterized in that the anionic surfactant is alkylsulfates and/or alkylethersulfates that have alkyl substituents consisting of 8 to 16 carbon atoms, preferably 10 to 14 carbon atoms.

9. The composition according to claim 7, characterized in that the anionic surfactant is alkylsulfates and/or alkylethersulfates where the alkyl substituent is a lauryl group.

10. The composition according to claim 7, characterized in that the anionic surfactant is alkylsulfates and/or alkylethersulfates that are in form of their ammonium salts.

11. The composition according to claim 7, characterized in that the anionic surfactant is present in an amount of 1 to 20 % by weight, preferably 5 to 17 % by weight, more preferably 10 to 15 % by weight, relative to the total weight of the composition

12. The composition according to any of claims 1 to 3, characterized in that the amphoteric surfactant is alkyl- and/or alkylamidopropy lbetaines .

13. The composition according to claim 12, characterized in that the amphoteric surfactant is alkyl- and/or alkylamidopropylbetaines that have alkyl substituents consisting of 8 to 16 carbon atoms, preferably 10 to 14 carbon atoms.

14. The composition according to claim 12, characterized in that the amphoteric surfactant is alkyl- and/or alkylamidopropylbetaines where the alkyl substituent is lauryl group.

15. The composition according to claim 12, characterized in that the amphoteric surfactant is present in an amount of 0.1 to 10 % by weight, preferably 0.3 to 7.0 % by weight, more preferably 0.5 to 5.0 % by weight, relative to the total weight of the composition.

16. The composition according to any of claims 1 to 3, characterized in that the cationic surfactant is quaternary ammonium salt.

17. The composition according to claim 16, characterized in that the cationic surfactant is myristamidopropyl PG-dimonium chloride phosphate and/or a combination of behenamidopropyl PG-dimonium chloride and linoleamidopropyl PG-dimonium chloride phosphate.

18. The composition according to claim 16, characterized in that the cationic surfactant is present in an amount of 0.001 to 1.0 % by weight, preferably 0.01 to 0.5 % by weight, relative to the total weight of the composition.

19. The composition according to claim 3, characterized in that the nonionic surfactants is derived from the reaction of fatty acids of coconut oil with diethanolamine, or fatty acids of coconut oil with ethanolamine.

20. The composition according to claim 19, characterized in that the nonionic surfactant is cocamide DEA or cocamide MEA.

21. The composition according to claim 19, characterized in that the nonionic surfactant is contained in an amount of 0.05 to 3 % by weight, preferably 0.1 to 2.0 % by weight, relative to the total weight of the composition.

22. The composition according to claim 3, characterized in that the cationic polymer is of natural origin or synthetic origin, and can be selected from the group consisting of quaternary ammonium salts, cationic polysaccharide, vinyl monomer copolymer, vinylpyrrolidone copolymer, cation modified protein, etc.

23. The composition according to claim 22, characterized in that the cationic polymer is selected from the group consisting of guar hydroxypropyltrimonium chloride, polyquaternium 10 and polyquaternium 74.

24. The composition according to claim 22, characterized in that the cationic polymer is present in an amount of 0.001 to 1.5 % by weight, preferably 0.01% to 1 % by weight, relative to the total weight of the composition.

25. The composition according to claim 3, characterized in that the silicone is dimethicones and/or amodimethicones. 26. The composition according to claim 25, characterized in that the dimethicones are those having viscosities from 5,000 to 2,000,000 est.

27. The composition according to claim 25, characterized in that the dimethicones and/or amodimethicones are present in an amount of 0.1 to 5.0 % by weight, preferably 0.5% to 3 % by weight, relative to the total weight of the composition.

28. The composition according to claim 3, characterized in that the anti-dandruff agent is selected from the group consisting of climbazole, ketoconazole, ciclopirox, piroctone olamine, zinc pyrithione, and selen disulfide.

29. The composition according to claim 28, characterized in that the anti-dandruff agent is zinc pyrithione.

30. The composition according to claim 28, characterized in that the anti-dandruff agents are present in an amount of 0.1 to 2.0 % by weight, preferably 0.2 to 1.0 % by weight, relative to the total weight of the composition.

31. The composition according to claim 3, characterized in that the pearlescent agent is selected from the group consistin of ethylene glycol mono-stearate, ethylene glycol distearate, polyethylene glycol distearate and mixtures thereof.

32. The composition according to claim 31, characterized in that the pearlescent agent is glycol distearate and/or PEG-3 distearate or mixtures thereof.

33. The composition according to claim 31, characterized in that the pearlescent agent is present in an amount of 0.1 to 3 % by weight, preferably 0.2 to 2 % by weight, relative to the total weight of the composition.

34. The composition according to claim 3, characterized in that the colorant is selected from the group consisting of CI 19140, CI 42090 and CI 14700.

35. Use of the composition according to any of claims 1 to 34 to improve the gliding property of the hair.

36. Use of the composition according to any of claims 1 to 34 to improve the detangling property of the hair.

37. Use of the composition according to any of claims 1 to 34 to improve the anti-roughness of the hair.

Description:
A Hair Cleansing Composition Containing Lotus Flower Oil and Use Thereof

Technical field

The invention relates to a cosmetic preparation, in particular a hair cleansing composition, comprising surfactant, polymeric thickener, and lotus flower oil. The cosmetic preparation leads to an improvement in the physical-optical properties of the hair, and it is easy to wash out after application on hair. The invention also relates to use of the cosmetic preparation.

Background Art

The entire human body, with the exception of the lips, the palms of the hands and the soles of the feet, is covered with hair, albeit for a large part barely visible. Because of the many nerve endings at the hair root, hair reacts sensitively to external influences such as wind or touch and is therefore a part of the sense of touch that should not be underestimated. However, nowadays, the most important function of human head hair lies in helping to create the appearance of the person in a characteristic manner.

Similarly to the skin, it fulfils a social function because it contributes considerably to interpersonal relations and to the self-esteem of an individual via its outward appearance. Hair is consisting of hair shaft and hair root. Hair shaft protrudes freely from the skin, and is a keratinized (dead) section of the hair. Hair shaft represents the actual visible part of the hair, which is continually renewed. Hair root which sticks in the skin is the living part of the hair. Hair shaft consists of three layers: the central part, which is called hair marrow (medulla), is regressed in humans, often completely missing; then there is the marrow, also called cortex; and cuticle as the outermost layer, comprising up to ten horny layers.

Human hair in its freshly grown condition is virtually impossible to improve. The part of the hair in the vicinity of the scalp accordingly has a virtually closed horny layer. In particular, the horny layer, being the external sheath of the hair, and also the inner region below the cuticle are subjected to particular stress by environmental influences. Sunlight, mechanical stress by intensive combing or brushing, hair treatments, such as hair colorations, bleaching and permanent waving, and also hair shaping using a hair dryer or other tools can cause damage to hair. One aim of hair care is to retain the natural state of freshly grown hair over as long a period as possible and, in the case of loss of the natural state, to restore it. Generally, natural healthy hair has a silky shine look, low porosity and a pleasant, smooth feel. Another important aspect in hair cleansing and hair care is to control dandruff because the dandruff problem disadvantageously affect up to about 50% of the people around the world. Even the slight appearance of dandruff on the scalp, hair or parts of the clothes is considered as a sign of lack of care. In addition, the appearance of dandruff is often accompanied by irritating itching, which normally causes oneself to scratch and in consequence can lead to infections and pathogens due to an affected skin.

Because the anti-dandruff shampoo compositions in the prior art are not satisfactory with respect to dandruff removal effect, and the treated hair are dry and difficult to comb, thus the requirements for cosmetic preparations to provide a control of dandruff are high. On the one hand, the cosmetic compositions containing anti-dandruff agents should eliminate or reduce scales thoroughly and permanently, and on the other hand, these compositions should be well tolerated.

It is also desirable that the anti-dandruff cosmetic compositions develop an effect as fast as possible thereby avoiding subsequent reactions such as itching, irritations and infections. Lotus is a perennial aquatic plant with yellow flowers. Lotus is utilized as a dietary staple and also for a variety of medical purposes in Eastern Asia, particularly in China. Lotus seed is utilized in the management of a variety of conditions, including tissue inflammation, poisoning, cancer, and leprosy. A pale yellow coloured liquid, extracted from Lotus plants, has been considered sacred for centuries. It has been used as effective remedy for skin conditions and stress related ailments such as headache, nausea, morning sickness, vomiting etc.

Lotus flower comprises linoleic acid, protein, phosphorus, iron and vitamins B and C. Practitioners of Ayurveda medicine often use lotus flowers on the face because the flower has soothing and cooling properties. Lotus (Nelumbo nuficera) flower essential oil increases melanogenesis in normal human melanocytes as described in detail in Exp. Mol. Med. 2009, July 31. 41 (7), 517-524.

It is described in CN 102860945 A that the combination of lotus leaf extract and aloe extract used in shampoo might reduce itching and improve the moisturizing and repairing features. However, no experimental results are disclosed in this patent application to support the claimed advantageous effect. In US 2013/0344178A1, a natural shampoo is prepared by the following steps: maturing herbal medicines including lotus roots, lotus leaves, red ginseng, Hippophae rhamnoides leaves and trunk, etc. at 65 to 95 °C for 3 to 21 days; decocting the matured herbs and then mixing with water. Various natural starting materials are required in this process, making the process more complicated to carry out. Furthermore, the process is not efficient with respect to reaction time.

CN 103550130A describes a shampoo containing lotus leaf tea bran. This prior art reference discloses very cumbersome and complicated processes because a combination of different herbs are used and the manufacturing is inconvenient.

CN 101164520A discloses in examples 1 and 7 the use of an extract of Lotus flowers. There is no description of any effect nor what kind of extract is used.

Furthermore, the prior art shampoo compositions also suffer from the following disadvantages: difficult to wash out, hair is difficult to manage in wet conditions and in dry conditions, hair seems a little bit oily after treatment with shampoo compositions, hair has bad gliding, detangling and roughness problems after treatment with shampoo compositions. The present invention is made to overcome the above defects of the prior art shampoo compositions. Aim of the present invention is to find out a cleansing composition containing a natural oil, such as lotus flower oil, for treatment of hair without leaving an oily film on the hair, the cleansing composition of the present invention should be easily washed out.

Preferably, the cleansing composition of the present invention should retain the natural state of freshly grown hair over as long a period as possible, and restore the condition of the hair as much as possible when it is damaged. Summary of the invention

Inventors of the present invention have noticed that a cleansing composition containing lotus flower oil in a concentration of 0.001 to 0.5% by weight is able to improve the physical-optical properties of hair, and is easy to wash out after treatment.

In a first aspect, the present invention provides a composition for cleansing hair, comprising

- at least one anionic surfactant, at least one amphoteric surfactant and at least one cationic surfactant,

- at least one polymeric thickener containing monomers selected from acrylic acid, methacrylic acid and derivatives of acrylic acid or methacrylic acid, and

- lotus flower oil in an amount of 0.001 to 0.5 % by weight. In a further aspect, the composition comprises preferably 0.05 to 0.3

% by weight, more preferably 0.15 to 0.25 % by weight of lotus flower oil.

Furthermore, the composition can optionally comprise the auxiliary components as listed in the part of "detailed description of the invention", such as nonionic surfactant, cationic polymer, silicone, anti-dandruff agent, pearlescent agent and colorant.

In addition to the above components and the auxiliary components, the composition comprises balance amount of water, so that all the components amount to 100% by weight. In another aspect, the present invention refers to use of the composition of the present invention in cleansing and conditioning hair, especially to improve the gliding, detangling and anti-roughness properties of hair.

By using the composition of the present invention, the disadvantages of the prior art cleansing compositions are overcome. The cleansing composition in the present invention leads to significantly improved gliding, detangling and anti-roughness properties of hair. Furthermore, after treatment with the composition in the present invention, hair has better managing properties both in wet condition and in dry condition.

Detailed description of the invention

The lotus flower oil can be obtained from lotus flowers through CO2 supercritical extraction process by using GTCC as the solvent, aiming at getting an oil soluble substance from the lotus flower. For example, such lotus flower oil is commercially available from the Morechem Company, Korea.

The use of lotus flower oil and/or an oily extract of lotus flower is essential for the present invention. The polymeric thickener used in the present invention stabilizes the composition and influences the viscosity of the hair cleansing composition in such a way that the composition has a Theological performance allowing the final product to be easily dispensed from the packaging item, but not dropping away from hair after application. The polymeric thickeners are those which contain monomers selected from acrylic acid, methacrylic acid and derivatives of acrylic acid or methacrylic acid. Preferably, the polymeric thickeners are in the form of carbomers (trade names Carbopol 980, Carbopol 981, Carbopol 5984, Carbopol ETD 2050 and Carbopol Ultrez-10 Polymer, all from the

Lubrizol Company), acrylates/ClO-30 alkyl acrylates crosspolymers (trade names Carbopol 1382, Carbopol ETD 2020, Permulen TR-1 Polymer, Permulen TR-2 polymer, all from the Lubrizol Company), acrylates copolymer (trade name Carbopol Aqua SF-1) or acrylates crosspolymer-4 (trade name Carbopol Aqua SF-2). Carbopol Aqua SF-1 is especially preferred.

The polymeric thickeners are used preferably in an amount of 0.1 to 10% by weight, more preferably 0.2 to 5 % by weight, still more preferably 0.6 to 2.0 % by weight, relative to the total weight of the composition. The values are referring to the active content of the polymers.

Anionic surfactants suitable for the present invention comprise, but are not limited to sulfate, sulfonate, sarcosinate and sarcosine derivatives.

Preferred anionic surfactants are alkali- and/or ammonium salts of alkylsulfate and/or alkylethersulfate. It is preferred that the alkylsulfates and/or alkylethersulfates have alkyl substituents consisting of 8 to 16 carbon atoms, more preferred are alkylsulfates and/or alkylethersulfates with alkyl substituents consisting of 10 to 14 carbon atoms. Even more preferred are alkylsulfates and/or alkylethersulfates where the alkyl substituent is a lauryl group. Furthermore it is preferred that the alkylsulfates and/or alkylethersulfates are in the form of ammonium salts.

The anionic surfactants are used preferably in an amount of 1 to 20 % by weight, more preferably 5 to 17 % by weight, still more preferably 10 to 15 % by weight, relative to the total weight of the composition. The values are referring to the active content of the anionic surfactants.

The amphoteric surfactants suitable for the present invention are the substances commonly known in the art to be used in hair care or personal care cleansing composition, such as those described in CN 101164520A and DE 202015002188U1. According to the invention, the amphoteric surfactants are preferably alkyl- and/or alkylamidopropylbetaines. It is preferred that the alkyl- and/or alkylamidopropylbetaines have alkyl substituents consisting of 8 to 16 carbon atoms. Even more preferred are alkyl- and/or alkylamidopropylbetaines with alkyl substituents of 10 to 14 carbon atoms. Most preferred are alkyl- and/or alkylamidopropylbetaines where the alkyl substituent is lauryl group.

The amphoteric surfactants are used preferably in an amount of 0.1 to 10 % by weight, more preferably 0.3 to 7.0 % by weight, still more preferably 0.5 to 5.0 % by weight, relative to the total weight of the composition. The values are referring to the active content of the amphoteric surfactants.

According to the invention, the cationic surfactants are preferably those which have conditioning qualities. More preferably, the cationic surfactants are quaternary ammonium salts. Still more preferably, the cationic surfactants are of the fatty acid aminopropyl PG-dimonium chloride phosphate type. Even more preferred cationic surfactants are myristamidopropyl PG-dimonium chloride phosphate and/or a combination of behenamidopropyl PG-dimonium chloride and linoleamidopropyl PG-dimonium chloride phosphate. The cationic surfactants are used preferably in an amount of 0.001 to 1.0 % by weight, more preferably 0.01 to 0.5 % by weight, relative to the total weight of the composition. The values are referring to the active content of the cationic surfactants.

According to the invention, additional surfactants, especially nonionic surfactants, can be comprised in the composition. Preferably, the nonionic surfactants are derived from the reaction of fatty acids of coconut oil with diethanolamine, for example cocamide DEA, or fatty acids of coconut oil with ethanolamine, for example cocamide MEA.

The nonionic surfactants are used preferably in an amount of 0.05 to 3.0 % by weight, more preferably 0.1 to 2.0 % by weight, relative to the total weight of the composition. The values are referring to the active content of the nonionic surfactants.

According to the invention, additional conditioning components can be optionally comprised in the composition. Cationic polymers are one type of conditioning components. The cationic polymer can be of natural origin or synthetic origin, and can be selected from the group consisting of quaternary ammonium salts, cationic polysaccharide, vinyl monomer copolymer, vinylpyrrolidone copolymer, cation modified protein, etc.

The cationic polymers of natural origin can be based on the guar molecule which is modified in such a way that cationic substituents are introduced or substituents are introduced which are cationic at specific pH values, specifically at those pH values of the hair cleansing compositions. An example of the modified guar molecules is guar hydroxypropyltrimonium chloride, which is a preferred component of the present invention. Cationic polymers derived from cellulose are also advantageous for the present invention. Similar to the case of guar, the substituents introduced to cellulose allow the cellulose molecule to have cationic qualities. An example which is preferred in the present invention is polyquaternium 10 (e.g. JR 30M® obtained from Amerchol company), which is also called cellulose 2-(2-hydroxy-3(trimethylammonio)propoxy) ethyl ether chloride. It is also preferred to use cationic polymers of synthetic origin in the present invention. An example suitable for the present invention is polyquaternium 74. Polyquaternium 74 is an acrylic / methacrylamide propyldimethylammonium chloride / hydroxypropyltrimethylammonium copolymer.

The cationic polymers are used in an amount of 0.001 to 1.5 % by weight, preferably 0.01% to 1 % by weight, relative to the total weight of the composition. The values are referring to the active content of the cationic polymers.

Silicones, especially dimethicones and/or amodimethicones are a further preferable class of components related to hair care. Silicone fluids can be characterized by their viscosity. Commercial products have a viscosity of between 1 centistokes (est) and 1,000,000 est. The lower viscosity products are miscible for example with mineral oil and isopropyl myristate and are useful for aerosol applications. The products having 100 - 500 est are the traditional silicones used as additives in skin care formulations and products characterized by higher viscosities used in barrier products or in hair products. According to the invention, the silicones are preferably dimethicones available as Baysilone M Dimethicone (5,000 - 2,000,000 est,) or CB-50M (-500,000 est at 25°C), both supplied by Momentive; further preferred are Dimethyl Silicone Fluids supplied by Dow Corning like PMX-200 Silicone Fluid (60,000 - 500,000 est) or CB 6634 Fluid (250,000 -650,000 est); further preferred amodimethicones are 8500 Conditioning Agent, 2-8566 Amino Fluid or AP-8087 Fluid.

The dimethicones and/or amodimethicones are used preferably in an amount of 0.1 to 5 % by weight, more preferably 0.5% to 3 % by weight, relative to the total weight of the composition. The values are referring to the active content of the silicones.

The hair cleansing composition of the present invention can optionally contain anti-dandruff agents. The anti-dandruff agents suitable for the present invention comprise any anti-dandruff agents known by one skilled in the art for treatment and prevention of dandruff formation. In particular, a considerable number of antifungal components are known from prior art that can be used as anti-dandruff agents in cosmetic compositions. Examples of anti-dandruff agents are climbazole, ketoconazole, ciclopirox, piroctone olamine, zinc pyrithione, and selen disulfide. Zinc pyrithione is preferred in the present invention.

Anti-dandruff agents are used preferably in an amount of 0.1 to 2.0 % by weight, more preferably 0.2 to 1.0 % by weight, relative to the total weight of the composition. The values are referring to the active content of the antidandruff.

The hair cleansing compositions of the present invention can optionally comprise pearlescent agents. Examples for pearlescent agents are ethylene glycol mono-stearate, ethylene glycol distearate, polyethylene glycol distearate and mixtures thereof.

It is preferred that the compositions of the present invention comprise glycol distearate and/or PEG-3 distearate as pearlescent agents.

Pearlescent agents are used preferably in an amount of 0.1 to 3 % by weight, more preferably 0.2 to 2 % by weight, relative to the total weight of the composition.

In one embodiment, the hair cleansing compositions of the present invention comprise colorants which have to be water soluble. Examples for suitable water soluble colorants are CI 19140, CI 42090, CI 14700. The preferred colorant for the present invention is CI 19140.

Preparation method

The composition of the present invention can be prepared by any technique known or effective to prepare a hair cleansing composition. The process to prepare the composition of the present invention comprises conventional formulating and mixing techniques. For example, the methods as disclosed in DE 202015002188U1 and CN 101164520A can be used.

Specifically, compositions of the present invention and a comparative composition (Example 4) are preferably produced with the following procedure (Table 1 shows the detailed composition of the Examples, and Table 2 shows the corresponding trade name and INCI of the compounds):

For manufacturing a batch of one of the compositions mentioned in the present invention, an IKA RW20 digital or IKA Eurostar stir equipment and a stirrer, e.g. a paddle stirrer is used.

Heat phase A to 75 ~ 78 °C in a beaker until all components are dissolved.

Heat phase B to ~ 50°C in a beaker, stir 20 minutes constantly.

Add phase B to phase A slowly with stirring, stir at 150 - 250rpm until 50 - 60°C.

Add phases C and D slowly with stirring, until all components are dissolved and homogeneous.

Finally add phase E slowly with stirring, stir until room temperature.

Test method

In order to show that the addition of lotus flower oil into the inventive compositions has an effect and contributes to the solution of the above-mentioned problem, a halfhead test is conducted. The test is carried out through the following procedure:

Compositions comprising lotus flower oil at different concentrations ranging from 0.001 to 0.5 % by weight (Examples 1-3 and 5-8) are prepared as samples of the present invention, and a blank shampoo is used as the comparative sample (Example 4), which does not comprise lotus flower oil at all. Respective test samples are filled in syringes, not revealing any details of the composition therein. Depending on the length of the hair, the sample use amount will be 3-5 ml.

A trained hairdresser starts with an initial assessment of the subject's hair to be treated by evaluating and recording the condition of the subject's hair.

Separate the hair of a subject from the middle of head, and clip up one side of the hair when the other side is treated. Wet the hair.

Put each sample in one hand, evaluate consistency of each sample. Spread each sample on hair, evaluate spreadability, foaming properties like richness, slippery and amount of foam.

Use the comparative sample to wash one side of the hair, and use one of the samples of the present invention to wash the other side. Stroke each side of head hair for 45s, and rinse the hair for 60s. The condition of the hair is not assessed during the washing procedure.

After rinsing for 3s - 5s, assess the detangling and gliding properties (3s - 5s). After rinsing for 30s, assess the gliding properties (30s) and easiness to rinse out. Then wet both sides of the hair again, and cover the hair up with towels.

Towel the hair to remove the spare water. Comb the hair with wide tooth comb, and assess wet detangling properties. After this, comb the hair with fine tooth comb, and assess wet combability.

Assess the wet gliding, anti-roughness at the tips of the hair.

After leaving hair at room temperature for 5 minutes, assess the moisture property and give general comments on both sides.

Blow-dry the hair, and assess easiness to manage the hair in dry condition.

Comb the hair with wide tooth comb, assess the dry detangling properties. After this, comb the hair with fine tooth comb, and assess the dry combability.

Finally assess dry gliding, anti-roughness and shininess of the hair. Give general comment to both sides.

8 different people for each sample are evaluated by the trained hairdresser.

The evaluation is done based on a 10-point system, "1 point" corresponds to "bad", and "10 points" corresponds to "good". A value of 5 points is a medium value, corresponding to sufficient qualities. The values of 9 to 6 points give descending values, making it possible to differentiate stepwise between good and sufficient. Correspondingly, the values of 4 to 2 points give descending values, making it possible to differentiate stepwise between sufficient and bad.

The test and evaluation results are shown in Table 3, wherein the average score based on the 8 evaluation scores is recorded for each sample.

It can be clearly seen from Table 3 that, addition of lotus flower oil to the composition has multiple effects. Relative to the sample containing no lotus flower oil, the compositions containing varying amounts of lotus flower oil exhibit better properties such as gliding property evaluated for dry and wet hair, spreadability, detangling and anti-roughness of the hair.

The amount of lotus flower oil is also an important factor, and the optimal concentration of lotus flower oil is 0.2 % by weight. Increasing concentrations are leading to not as good values concerning all criteria such as gliding property evaluated for dry and wet hair, spreadability, detangling and anti-roughness of the hair.

Comparison of the data for the Comparative Example without lotus flower oil and the formula containing 0.2 % by weight lotus flower oil reveals that, the values for gliding are increased by 30 % for gliding in dry hair, 9 % for gliding during rinsing, and 20 % for gliding in wet hair. The values for spreadability are increased by 10 %, for detangling by 10 % and for anti-roughness by 20 %. Furthermore, the composition is evaluated for easiness to be washed out, and the composition containing 0.2 % lotus flower oil could be washed out much more easily than the composition containing no lotus flower oil.

The above examples of the present invention are provided only for illustrative purposes, and are not intended to limit the invention in any aspect. One skilled in the art should know that, changes and modifications may be carried out to technical solutions of the present invention within the spirit and scope of the present invention.