JPH10236927A - Hair treatment composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hair treatment composition for supplying the precursor of a hair-integrated lipid fatty acid to hair follicles. SOLUTION: This hair treatment composition comprises (1) the first fatty acid precursor comprising an amino acid selected from leucine, isoleucine, methionine and valine and their mixtures in a level of 0.01-20wt.% based on the whole weight of the composition and in a level of 20-100wt.% based on the whole weight of the amino acids contained in the composition, (2) 0.01-20wt.% of the second fatty acid precursor selected from saccharides, mono-, di- and tri-carboxylic acids and their salts and capable of supplying a two or three carbon unit for extending the chain of the fatty acid, and (3) at least one kind of surfactant selected from anionic, amphoteric, twitter ionic or cationic surfactants and their mixtures.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to a hair treatment composition containing a precursor of a fatty acid of a hair integral lipid, and particularly to the physical properties of hair fibers such as gloss, smoothness, handleability, softness and cuticle integrity. It relates to the use of the composition for improving properties.

[0002]

BACKGROUND OF THE INVENTION It is believed that branched and linear monolithic lipids play an important role in the structure and integrity of hair fibers, especially with regard to their surface properties. Lipids are associated with the surface membrane and are present on the fiber surface and in the cell membrane complex, and the gloss, smoothness, handleability, softness,
It is believed to contribute to protection, lubrication and cuticle conservation.

[0003] Surface-integrated lipids are lost from fibers due to physical and chemical damage incurred, inter alia, through washing, severe styling treatment and exposure to the open air. This loss has been found to increase fiber roughness and reduce gloss. 18-methyleicosanoic acid, a C21 branched fatty acid, is considered to be a particularly important component in the lipid distribution of hair. Fatty acid analysis of hair from people with maple syrup urine disease (MSUD)
This shows that only a very small amount of 18-methyleicosanoic acid is present compared to the amount found in normal controls. The same analysis also showed a decrease in other branched fatty acids (C
17: 0 br, C19: 0 br, C20: 0 br). There was also an increase in unbranched saturated fatty acids (C1
6: 0, C18: 0, C20: 0, C22: 0 and C
24: 0) [Jones et al., Journal of Investigative Dermatology (Journal of Investigative Dermatology)
Investigative Dermatolog
y), 104 (4), 1995, 688]. Hair from patients with MSUD shows structural defects in fiber cuticles.

[0004] EP-A-0,483,689 discloses hair containing a specific type of branched chain fatty acid, especially 18-methyleicosanoic acid (hereinafter 18-MEA) and its salts and esters. The present invention relates to a cosmetic composition for use. The composition is said to prevent damage to the hair, such as split ends, and to provide a softening, smoothness and gloss conditioning effect.

However, such branched fatty acids can be obtained by separation and extraction from the hair or by subjecting the appropriate phosphonium salts and aldehyde precursors to a Wittig reaction and subsequent reduction and hydrolysis.
It must be obtained by a multi-step chemical method as described in -A-0,483,689.

[0006] Linear fatty acids such as palmitic acid have also been added to hair treatment compositions to improve hair properties.

[0007] The extrinsic application of free linear or branched fatty acids through hair treatment compositions as described above has several disadvantages. First, there is the cost of extracting or chemically synthesizing the substance from natural sources. Furthermore, exogenously supplied free fatty acids do not become integral and strongly bound to the fibers, in contrast to natural ones, which can only be extracted from the fibers by alkaline hydrolysis. Natural hair integral lipids can be covalently attached to the fiber by thioester bonds or can be derivatized to additional essential components of the fiber such as phospholipids and ceramides.

When certain nutrients, which are carbon donors for fatty acid chain extension, are supplied, the hair follicles to be cultured are
We have now found that branched and linear fatty acids such as MEA and palmitic, stearic and myristic acids can be synthesized. These particular nutrients are selected from particular amino acids, sugars and organic carboxylic acids and their salts.

Amino acids are known to be important for human hair root nutrition and human hair growth.

GB 1,401,089 describes a hair treatment composition containing natural amino acids or protein hydrolysates. Particularly preferred are glycine, glutamic acid, aspartic acid, lysine, serine and alanine because these amino acids are present in collagen and keratin, substances that are present as structural components of human skin and hair. This is because they are naturally found in a bonded state in a form. Shampoo compositions incorporating protein hydrolysates resulting from the complete hydrolysis of collagen have been described.

[0011] EP 0,186,025 discloses cosmetic preparations for skin and hair care with a hydrolyzate of almond protein. Almond protein is characterized by a high content of acidic and basic amino acids and contains 40-50 wt% glutamic, aspartic and arginine.

A number of publications describe the use of a series of amino acids, often in "cocktail" form, in topical lotions and tonics to cure baldness and other skin, scalp and hair disorders. An example of such a disclosure is JP5 relating to a dandruff-protecting hair cosmetic containing vitamin E acetate and methionine.
9 / 007,111, CA8 which describes a formulation for hair and scalp for normalizing scalp secretion and promoting hair growth, which may contain cysteine and methionine in particular in a base incorporating bergamot oil and a nonionic emulsifier
WO92 / 88, describing compositions containing L-leucine, L-isoleucine and L-valine, which are said to stimulate hair and nail growth and regeneration.
00720.

[0013]

The prior art discussed above does not describe the biosynthesis of hair monolithic fatty acids in hair follicles.

[0014]

SUMMARY OF THE INVENTION The present invention is a hair treatment composition for the supply of a precursor of a hair-integrated lipid fatty acid to a hair follicle, comprising: (i) a hair treatment composition comprising: 0.1 to 20% by weight and based on the total weight of amino acids present in the composition.
A first fatty acid precursor, being an amino acid selected from leucine, isoleucine, methionine and valine and mixtures thereof, present at a level of% by weight, (ii)
0.01-20% by weight of a second fatty acid precursor selected from sugars, mono-, di- and tricarboxylic acids and their salts and capable of donating two or three carbon units for fatty acid chain extension (Iii) A composition as defined above, comprising at least one surfactant selected from anionic, amphoteric, zwitterionic and cationic surfactants and mixtures thereof.

[0015] Isoleucine is the most preferred amino acid (i) for the compositions of the present invention. Although not wanting to be bound by any theory, this is the 18-MEA in hair follicles
Considered to be the most direct precursor for synthesis, 18-MEA is a particularly important component in the lipid distribution of hair fibers. Several proposed biochemical pathways are given in the literature, but are not yet fully understood.

It is believed that amino acid (i) provides a branch point for hair-integrated lipid branched fatty acids. It can also be catabolized in the hair follicle to form a precursor of the hair integral lipid linear fatty acid.

Simple derivatives of amino acid (i) such as salts and hydrogen salts can be used. In addition, other derivatives such as acyl, ester and peptide derivatives can be used. These can also be used as salts or hydrogen salts.

Examples thereof include those having an alkanoyl moiety of 3 to 20.
N-alkanoyl derivatives, for example N-butanoyl, N-hexanoyl and N-octanoyl, having an alkyl chain length of 4 carbon atoms, preferably 4 to 10 carbon atoms; N-alkyl or COO-carbon atoms, preferably 1-4 carbon atoms, for example methyl, ethyl and n-propyl.
Alkyl derivatives and peptide derivatives in which the peptide residue consists of 2 to 8 amino acid residues or substituted amino acid residues.

Mixtures of amino acids such as can be obtained from protein hydrolysates can be used. However, such mixtures should be judiciously ensured that 20-100% by weight, based on the total weight of amino acids present in the resulting composition, is constituted by one or a mixture of the particular amino acids (i). Must be selected.

Preferably, 90-100% by weight, based on the total weight of amino acids present in the resulting composition, is constituted by one or a mixture of the specific amino acids (i). A single amino acid of amino acid (i) is used.

Most components (ii) are selected from sugars, mono-, di- and tricarboxylic acids and their salts, and are capable of donating two or three carbon units for the chain extension of fatty acids. It is a fatty acid precursor.
The two or three carbon units themselves may be provided directly from the molecule or may be derived indirectly through catabolism of the molecule.

Examples of sugars for component (ii) are sucrose, fructose and glucose. Glucose is particularly preferred. Examples of mono-, di- and tricarboxylic acids are acetic, malonic, lactic, citric and propionic acids. Suitable salts of these acids are those in which two or three carbon units for fatty acid chain extension can be derived from the acid moiety in a bioavailable form. Examples of such salts are the water-soluble alkali metal, alkaline earth metal and ammonium salts of these acids, including the substituted ammonium salts.

We have shown that these components (ii), when used alone, can contribute to the synthesis of linear fatty acids in hair follicles. It is believed that two (eg, acetate, lactate) and three (eg, propionate) carbon donors result in even and odd carbon chain number fatty acids, respectively, through chain extension.

In combination with the amino acid component (i), precursors for linear and branched fatty acids can be provided (the amino acid moiety supplies branch points as discussed above). This is advantageous, however, as it has been found that the important hair integral lipids are derived from both linear and branched fatty acids.

The total amount of amino acids (i) and carbon donors (ii) in the compositions according to the invention is from 0.01 to 20% by weight of the composition for each active substance, preferably from 0.02 to 5% by weight. Preferably it is in the range of 0.05 to 2% by weight.

The ratio of component (i) to component (ii) is such that the complementary action of amino acids and carbon donors is obtained so as to provide the appropriate balance of linear and branched fatty acid precursors. It is. The particular ratio will depend on the condition of the hair and the particular active substance used. (I) vs. (i
The ratio of i) generally ranges from 10: 1 to 1:10, preferably 3: 1 to 1: 3, most preferably 1: 1.

Advantageously, the compositions according to the invention can be formulated as shampoos, and thus comprise one or more detersive surfactants which are cosmetically acceptable and suitable for topical application to the hair. Including. Suitable detersive surfactants which can be used alone or in combination are selected from anionic, amphoteric and zwitterionic surfactants and mixtures thereof.

Examples of anionic surfactants include alkyl sulfates, alkyl ether sulfates, alkaryl sulfonates, alkanoyl isethionates, alkyl succinates, alkyl sulfosuccinates, N-
Alkyl sarcosinates, alkyl phosphates, alkyl ether phosphates, alkyl ether carboxylates and alpha-olefin sulfonates, especially the sodium, magnesium, ammonium and mono, di and triethanolamine salts thereof. Alkyl and acyl groups generally contain from 8 to 18 carbon atoms and may be unsaturated. Alkyl ether sulfate, alkyl ether phosphate and alkyl ether carboxylate are used in an amount of 1 to 1 per molecule.
It may contain zero ethylene oxide or propylene oxide units.

Typical anionic surfactants for use in the shampoos of the present invention are sodium oleyl succinate, ammonium lauryl sulfosuccinate, ammonium lauryl sulfate, sodium dodecyl benzene sulfonate, triethanolamine dodecyl benzene sulfonate , Sodium cocoyl isethionate, sodium lauryl isethionate and sodium N-lauryl sarcosinate. The most preferred anionic surfactants are sodium lauryl sulfate, triethanolamine monolauryl phosphate, sodium lauryl ether sulfate 1
EO, 2EO and 3EO, ammonium lauryl sulfate and ammonium lauryl ether sulfate 1EO, 2EO and 3EO.

Examples of amphoteric and zwitterionic surfactants include alkylamine oxides, alkylbetaines,
Including alkylamidopropyl betaines, alkylsulfobetaines (sultaines), alkylglycinates, alkylcarboxyglycinates, alkylamphopropionates, alkylamphoglycinates, alkylamidopropylhydroxysultaines, acyltaurates and acylglutamates, Alkyl and acyl groups have from 8 to 19 carbon atoms. Typical amphoteric and zwitterionic surfactants for use in the shampoos of the present invention are laurylamine oxide,
Cocodimethylsulfopropyl betaine and preferably lauryl betaine, cocoamidopropyl betaine and sodium cocoamphopropionate.

The detersive surfactant is present in the shampoo composition of the present invention in an amount of about 1 to about 40%, preferably about 2 to about 30%, optimally about 10 to about 40% by weight based on the total weight of the shampoo composition. It may be present in a total amount of 30% by weight.

The shampoo may also include a non-ionic surfactant to help impart aesthetic, physical or cleansing properties to the composition. Nonionic surfactants may be included in amounts ranging from 0 to about 5% by weight, based on total weight.

For example, typical nonionic surfactants that can be included in the shampoos of the present invention are aliphatic (C ₈ -C
₁₈ ) Condensation products of primary or secondary linear or branched alcohols or phenols with alkylene oxides, usually ethylene oxide, including those having 6 to 30 ethylene oxide groups.

[0034] Other representative nonionics include mono- or dialkylalkanolamides. Examples of those are
Includes coco mono or diethanol amide and coco mono isopropanol amide.

A further nonionic surfactant that can be included in the shampoo for the present invention is an alkyl polyglycoside (APG). Typically, APGs are those that comprise an alkyl group attached (optionally via a bridging group) to a block of one or more glycosyl groups.
Preferred APGs are of the formula RO- (G) _n wherein R is a branched or straight chain alkyl group, which may be saturated or unsaturated, and G is a saccharide group. ].

[0036] R may represent a mean alkyl chain length of from about C ₅ ~ about C _20. Preferably, R represents a mean alkyl chain length of from about C ₈ ~ about C _12. Most preferably, the value of R is between about 9.5 and about 10.5. G is be selected from C ₅ or C ₆ monosaccharide residues, and is preferably a glucoside. G may be selected from the group consisting of glucose, xylose, lactose, fructose, mannose and derivatives thereof. Preferably, G is glucose.

The degree of polymerization, ie, n, can have a value from about 1 to about 10 or more. Preferably, the value of n is about 1.1
~ 2. Most preferably, the value of n ranges from about 1.3 to about 1.5.

Suitable alkyl polyglycosides for use in the present invention are commercially available and include, for example, Oramix NS10 from Seppic, Inc.
Henkel's Plantaren 12
00 and Plantaren 200
Includes substances identified as 0.

Similarly, the composition may contain other emulsifiers, conditioning agents, inorganic salts, humectants and similar materials to provide the desired aesthetic or physical properties to the composition.

Representative conditioning agents that can be included in the shampoos of the present invention include silicones. Typically, these are from 0.01 to 10 based on total weight.
%, Preferably at a level of 0.5-5% by weight in the composition.

Silicone is a particularly preferred conditioning agent for hair. Typical silicone is
For example, polyalkylsiloxanes (optionally end-capped with one or more hydroxyl groups), polyalkylarylsiloxanes, siloxane gums and resins, cyclomethicones, amino-functional silicones, quaternary silicones, and mixtures thereof. And volatile and non-volatile silicones.

Preferred silicones include polydimethylsiloxane (of the CTFA name dimethiconol) and hydroxylated polydimethylsiloxane (of the CTFA name dimethiconol). Suitably, the average particle size of the silicone in the shampoo composition is less than 20 microns, preferably less than 2 microns. Particle size is based on 2600D particles from Marvern Instruments.
It can be measured by a light scattering technique using a Particle Sizer. The silicone is preferably emulsion polymerized because it allows very high viscosity silicones to be more easily processed. Silicones can be crosslinked.

Silicones of the type described above are, for example, DC
-1784 and DCX2-1391 (both from Dow
(Corning).

The shampoo compositions of the present invention may also include a polymeric cationic conditioning compound that has an affinity for the hair and imparts conditioning properties to the hair. The polymeric cationic conditioning compound is generally present in an amount of from 0.01 to 5% by weight, preferably from about 0.05 to 1% by weight, more preferably from about 0.08 to about 0.1% by weight.
Present at a level of 5% by weight. Synthetic or naturally derived polymers having quaternized nitrogen atoms are useful. The molecular weight of the polymer is generally between 5,000 and 10,000.
It is typically between at least 10,000 and preferably between 100,000 and about 2,000,000.

Representative synthetic quaternized polymers include, for example,
Cationic copolymers of 1-vinyl-2-pyrrolidine and 1-vinyl-3-methyl-imidazolium salts (e.g., chloride salts) (Cosmetic Toiletries and Fragrance Association (C)
osmatic Toiletry and Frag
lance association) or “CTF
A "is referred to as polyquaternium-16),
Copolymers of 1-vinyl-2-pyrrolidine and dimethylaminoethyl methacrylate (CTF in the art)
A refers to polyquaternium-11. ), Including, for example, dimethyldiallylammonium chloride homopolymer (referred to in the art (CTFA) as polyquaternium-6).
Grade ammonium containing polymers, U.S. Pat. No. 4,009,
Mineral acid salts of amino-alkyl esters of homo- and copolymers of unsaturated carboxylic acids having 3 to 5 carbon atoms as described in U.S. Pat.
311 including cationic polyacrylamide.

Representative naturally derived quaternized polymers include quaternized cellulose compounds as well as cationic guar gum derivatives such as guar hydroxypropyltrimonium chloride. Examples of these are the JAGUAR C-1 commercially available from Mayhall under their JAGUAR trademark series.
3S, JAGUAR C-15 and JAGUAR C-17.

The shampoo composition of the present invention also comprises 18-
Optional conditioning agents may be included, such as branched fatty acids such as MEA or linear fatty acids such as palmitic, myristic and / or stearic acid. Generally, these components are present on a total weight basis of 0%.
And may be included in amounts ranging from about 3% by weight.

The compositions according to the invention can also be formulated as hair conditioners for hair treatment (typically after shampooing) and subsequent rinsing. Such formulations then comprise one or more conditioning surfactants which are cosmetically acceptable and suitable for topical application to the hair.

Suitable conditioning surfactants are selected from cationic surfactants and are used alone or in mixtures. Examples of these are hydroxylated
Grade ammonium or salts thereof, such as chloride.

Suitable cationic surfactants for use in the hair conditioner of the present invention include cetyltrimethylammonium chloride, behenyltrimethylammonium chloride, cetylpyridinium chloride, tetramethylammonium chloride, tetraethylammonium chloride, octyltrimethylammonium chloride, Dodecyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, octyldimethylbenzylammonium chloride, decyldimethylbenzylammonium chloride,
Stearyl dimethylbenzyl ammonium chloride,
Includes didodecyl dimethyl ammonium chloride, dioctadecyl dimethyl ammonium chloride, tallow trimethyl ammonium chloride, coco trimethyl ammonium chloride and their corresponding hydroxides.
Further suitable cationic surfactants include substances having the CTFA names quaternium-5, quaternium-31 and quaternium-18. Mixtures of any of the foregoing may also be suitable. A particularly useful cationic surfactant for use in the hair conditioner of the present invention is cetyltrimethylammonium chloride, which is commercially available, for example, as GENAMIN CTAC from Hoechst Celanese.

In the hair conditioner of the present invention,
The level of cationic surfactant is preferably from 0.01 to 10%, more preferably from 0.05 to 5%, most preferably from 0.1 to 2% by weight of the composition.

The conditioner of the present invention advantageously comprises
Fatty alcohol substances are mixed in. The combination of a fatty alcohol substance and a cationic surfactant in the conditioning composition is believed to be particularly advantageous, since this leads to the formation of a lamellar phase in which the cationic surfactant is dispersed.

Representative fatty alcohols contain 8 to 22, more preferably 16 to 20, carbon atoms. Examples of suitable fatty alcohols include cetyl alcohol, stearyl alcohol and mixtures thereof.

The level of fatty alcohol substances is conveniently between 0.01 and 10% by weight of the composition, preferably between 0.1 and 5%.
% By weight. The weight ratio of cationic surfactant to fatty alcohol is suitably between 10: 1 and 1:10, preferably between 4: 1 and 1: 8 and optimally between 1: 1 and 1: 4.

The conditioners of the present invention may include other emulsifiers, conditioning agents, inorganic salts, humectants and the like to provide the desired aesthetic or physical properties to the composition. Silicones as described above for shampoo compositions are particularly preferred conditioning agents for hair.

As further optional ingredients for inclusion in the shampoo or conditioner compositions of the present invention, in addition to water, the following conventional auxiliary substances known for use in cosmetic compositions may be mentioned. That is, suspending agents, thickeners, pearlescent agents, opacifiers, salts, flavors, buffers, coloring agents, emollients, moisturizers, foam stabilizers,
Sunscreen substances, antimicrobial agents, preservatives, antioxidants, natural oils and extracts, propellants.

The composition of the present invention is mainly composed of
It is intended for topical application to the hair and / or scalp of a human recipient to improve the properties of the hair fiber surface, such as softness, handleability, cuticle integrity and especially gloss.

The present invention therefore relates to the use of a composition as defined above for improving at least one of the following properties of the hair surface: gloss, smoothness, handleability, softness and cuticle integrity. provide.

Components (i) and (ii) may also be used independently in appropriate amounts, as described above, in a hair treatment composition to supply the hair integral lipid fatty acid precursor to the hair follicle. Can be

Accordingly, the present invention also provides a hair-integrated lipid fatty acid precursor for improving at least one of the following properties of the hair fiber surface: gloss, smoothness, handleability, softness and cuticle integrity. , Or the use of (i) or (ii) in a hair treatment composition.

[0061]

DETAILED DESCRIPTION OF THE INVENTION The present invention is now further illustrated by the following non-limiting examples.

Example 1 Isoleucine into lipids by human hair follicles in vitro
Demonstration of incorporation of human hair follicles into a fill pot or the like ("1990, J Cell Sci, 97: 463-4").
70 ") and cultured in the presence of radiolabeled isoleucine. The hair follicles were incubated for 2 days at 37 ° C., 5% CO _{2 in} air and> 95% humidity.

At the end of the total incubation period, the lipid content of the hair follicles was extracted and analyzed.

The results show that the major labeled species was 18-ME
A was clearly shown. No other radiolabeled species was identified.

Example 2 Incorporation of Acetate into Lipids by Human Hair Follicles In Vitro
Only follicular hair follicles were isolated as described in Example 1 and cultured in the presence of radiolabeled acetate. The hair follicles were incubated for three days at the conditions described above for Example 1.

At the end of the total incubation period, the lipid content of the hair follicles was extracted and analyzed.

The results show that the major labeled species (in decreasing order of the amount of radiolabel present) are palmitic, stearic, myristic, arachidic and 18-M
It was clearly shown to be EA. No other species were identified.

EXAMPLE 3 Glucose into lipids by human hair follicles in vitro
Demonstrated integration follicles were isolated as described in Example 1 and cultured in the presence of radiolabeled glucose. The hair follicles were incubated for two days at the conditions described above for Example 1.

At the end of the culture period, the lipids were extracted as described above in Example 1.

The results clearly showed that the major labeled species (in decreasing order of radiolabel) were 18-MEA, palmitic acid and stearic acid.

Examples 4 and 5 The following formulations illustrate shampoo compositions according to the invention.

[0072]

[Table 1]

The shampoos of Examples 4 and 5 were both opacified liquids having a viscosity of 4000-6000 cps and a pH of 4.5-5.

Examples 6 and 7 The following formulations illustrate further shampoo compositions according to the present invention.

[0075]

[Table 2]

The shampoos of Examples 6 and 7 have a viscosity of 350
The liquid was 0-5000 cps and pH 4.5-5. Example 6 was opaque and Example 7 was clear.

All of the shampoos of Examples 4 to 7 impart excellent gloss and smoothness to the hair.

Examples 8 and 9 The following formulations illustrate post-wash hair conditioning compositions according to the present invention.

[0079]

[Table 3]

The conditioner of Example 8 is 4.5 to 5.0
And that of Example 9 has a pH of 3.0 to 3.5.
H. Both have a viscosity of 7000 to 11000c
It was a ps opaque liquid.

Both conditioners impart excellent sheen and smoothness to shampooed hair.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Gillian Elizabeth Westgate, UK, MK 44.1 El Kew, Betzdorf, Schianbruck, Colworth House, Unilever Research Coulworth Lab (No address)

Claims (12)

[Claims] Claims: 1. A hair treatment composition for the supply of a precursor of a hair-integrated lipid fatty acid to a hair follicle,
(I) present at a level of 0.01 to 20% by weight based on the total weight of the composition and at a level of 20 to 100% by weight based on the total weight of amino acids present in the composition; A first fatty acid precursor, which is an amino acid selected from leucine, isoleucine, methionine and valine and a mixture thereof, (ii) 0.01 to 20% by weight
A second fatty acid precursor selected from sugars, mono-, di- and tricarboxylic acids and salts thereof and capable of donating two or three carbon units for fatty acid chain extension, (iii) at least one Species, anionic,
Such a composition comprising a surfactant selected from amphoteric, zwitterionic and cationic surfactants and mixtures thereof. 2. The method of claim 1, wherein (i) is isoleucine.
A composition according to claim 1. 3. The method of claim 1, wherein (ii) is glucose.
Or the composition according to 2. 4. The composition of claim 1 wherein the amount of amino acid (i) is 0.01% of the composition.
The composition according to claim 1, wherein the composition is 20% by weight. 5. The composition according to claim 1, wherein the amount of the two carbon donor (ii) is from 0.01 to 20% by weight of the composition. 6. The composition according to claim 1, wherein the ratio of (i) to (ii) ranges from 10: 1 to 1:10. 7. A composition according to claim 1, wherein the composition is formulated as a shampoo composition and the at least one surfactant is present in a total amount of from 0.1 to 50% by weight of the composition. Composition. 8. The composition according to claim 7, further comprising a polymeric cationic conditioning compound and / or silicone. 9. The composition of claim 1, wherein the at least one surfactant is formulated as a hair conditioner and comprises at least one surfactant.
The composition according to any one of claims 1 to 6, wherein the composition is a cationic surfactant present in a total amount of 0% by weight. 10. The method of claim 9, further comprising a fatty alcohol.
A composition according to claim 1. 11. The hair fiber surface according to claim 1, for improving at least one of the following properties: gloss, smoothness, handleability, softness and cuticle integrity. Use of the composition. 12. A hair-integrated lipid fatty acid precursor in a hair treatment composition for improving at least one of the following properties of the hair fiber surface: luster, smoothness, handleability, softness and cuticle integrity. Use of (i) or (ii) in