EP1438005A1

EP1438005A1 - Use of one or several substances selected from the group of pyrimidines and purines in cosmetic preparations for colouring hair

Info

Publication number: EP1438005A1
Application number: EP02785162A
Authority: EP
Inventors: Werner Berens; Rainer Wolber; Christoph Smuda; Franz STÄB; Thomas Blatt; Kyra Giesen
Original assignee: Beiersdorf AG
Current assignee: Beiersdorf AG
Priority date: 2001-10-12
Filing date: 2002-10-04
Publication date: 2004-07-21
Also published as: US20050000040A1; WO2003032938A1; DE10150445A1

Abstract

Use of one or several substances selected from the group of pyrimidines and purines in cosmetic preparations for augmenting the natural hair colour or for stimulation of the melanogenesis of human hair.

Description

description

Use of one or more substances selected from the group of pyrimidines and purines in cosmetic preparations for coloring hair

The invention relates to a new use and a new method for dyeing hair, for example gray hair, in particular living human hair, with one or more substances selected from the group of pyrimidines and purines, and preparations which are used in the Execution of the method can be used.

Hair is the thread-like, thread-like, almost universal skin appendage (missing from the palms of the hands, soles of the feet, extended sides of the toes, end of the fingers); distinguished as long hair (the head, beard, armpit, pubic hair = Capilli, Barba, Hirci or Pubes; in men also chest hair), short, bristle hair (Supercilia, Cilia, Vibrissae, Tragi) and wool hair (Lanugo , Velvet hair). The structure of all these hairs is roughly similar: the central hair mark (made of epithelial cells with eosinophilic granules of the trichohyalin granule), surrounded by the hair cortex (from horny cells; contains pigments) and the epidermis (cuticle pili; coreless epidermal layer) ) and layers of the epithelial and connective tissue hair sheath.

The hair is divided into the hair shaft protruding from the skin and the oblique hair root reaching into the subcutis, the layers of which correspond approximately to those of the epidermis. The thickened lower end of the root, the hair bulb, sits on a vascular connective tissue cone that protrudes into it, the hair papilla (both as a hair floor). The onion is in the initial (= anagen) phase, the cyclically repeating hair formation layered onion-like due to constant new formation of cells due to its layer close to the papilla (matrix), later closed, bulbous, completely horny (piston hair) and becomes finally, in the final (= telogen) phase, replaced by a new hair - starting from a newly formed hair papilla - in the direction of the follicle opening.

(...) Hair formation begins in the 3rd month of the embryo by injecting epidermis into the subcutis. The lifespan is approximately 3 years. - The terminal hair displacing the fluffy wool hair is longer, stronger and. dark; as head hair, eyebrow hair, eyelashes, they arise soon after birth, but otherwise during puberty under the influence of hormones. - Functions: heat insulation (by increasing the evaporation area for sweat also heat emission), friction reduction u. - through the surrounding nerves - participation in the sense of touch.

Melanin is responsible for the personal hair color. Melanin is formed in the melanocytes, cells that occur in the hair bulb in association with the keratinocytes of the hair market. As characteristic cell organelles, melanocytes contain melanosomes in which the melanin is formed. This is transferred via the long dendrites of the melanocytes into the keratinocytes of the precortical matrix and creates the more or less pronounced blonde to brown-black hair color. Melanin is formed as the final stage of an oxidative process in which tyrosine is converted into brown to brown-black eumelanins (DHICA and DHI melanin) or with the participation of sulfur-containing compounds to reddish pheomelanin with the help of the enzyme tyrosinase. DHICA and DHI melanin are produced via the common intermediate stages dopaquinone and dopachrome. The latter is implemented, partly with the participation of further enzymes, either in indole-5,6-quinone carboxylic acid or in indole-5,6-quinone, from which the two eumelanins mentioned arise. The formation of phaeomelanin takes place, among other things, via the intermediates dopaquinone and cysteinyldopa. Cysteine is also necessary if the phaeomelanin is to be created for blonde and reddish hair.

Eumelanin is the black-brown pigment. It is mainly about the depth of color of the hair. In brown and black hair it occurs in clearly recognizable granules. Phaeomelanin is the red pigment. It is responsible for light blonde, blonde and red hair. The structure of this melanin is much finer and smaller. The different hair colors result from the different proportions of the melanin types:

• Blond hair contains little eumelanin and a lot of phaeomelanin.

• Dark hair contains a lot of eumelanin and little phaeomelanin.

• Red hair also has little eumelanin and a lot of phaeomelanin.

• All shades of hair in between arise from different mixing ratios of the two melanin types.

The pigment formation process can only proceed if sufficient tyrosinase is available. This enzyme is formed less frequently with increasing age. This gradually leads to gray hair. The reason: with little tyrosinase, less and less tyrosine is formed. The production of melanin also decreases. The missing melanin is replaced by the storage of air bubbles. The hair appears gray.

This process is usually insidious. It begins at the temples and then extends to the entire hair on the head. Then it hits the beard and eyebrows. Finally, all of the body's hair is gray.

Medically, gray hair is called canities. There are several ways of graying. Premature graying, from the age of 20, is also called Canities praecox.

Symptoms of canities, or symptomatic graying of the hair, can have various causes. This includes:

• pernicious anemia (vitamin B deficiency anemia),

• severe endocrinological disorders, e.g. B. in thyroid diseases.

Acute, febrile diseases,

• drug side effects,

• cosmetics,

• metals.

The coloring of hair, especially of living human hair, with the help of natural dyes, as has been the case since ancient times, especially for the dye henna is known, and which have been pushed into the background in favor of synthetic dyes for years, has been the subject of new interest for several years. The red hue created by henna is a disadvantage.

With increasing age, the melanin production that causes the hair color decreases: the hair becomes gray or white. It is a cosmetic wish of some consumers to reverse this process or to let it run more slowly. For this purpose, the cosmetic industry uses lead acetate in some countries, which is toxic and is therefore prohibited in the European Cosmetics Regulation. This lead acetate is preferably applied to the hair as a solution and remains there for a long time without being washed off.

For dyeing keratin fibers, e.g. B. hair, wool or furs, generally either direct dyes or oxidation dyes, which are formed by oxidative coupling of one or more developer components with one another or with one or more coupler components, are used. Coupler and developer components are also referred to as oxidation dye precursors.

Primary aromatic amines with a further free or substituted hydroxy or amino group located in the para or ortho position, diaminopyridine derivatives, heterocyclic hydrazones, 4-aminopyrazolone derivatives and 2,4,5,6-tetraaminopyrimidine and. Are usually used as developer components its derivatives used.

Special representatives are, for example, p-phenylenediamine, p-toluenediamine, 2,4,5,6-tetraaminopyrimidine, p-aminophenol, N, N-bis (2-hydroxyethyl) -p-phenylenediamine, 2- (2,5-diaminophenyl ) -ethanol, 2- (2,5-diaminophenoxy) -ethanol, 1-phenyl-3-carboxyamido-4-amino-pyrazolon-5, 4-amino-3-methylphenol, 2-aminomethyl-4-aminophenol, 2- Hydroxy-methyl-4-aminophenol, 2-hydroxy-4,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine and 2,5,6-triamino-4-hydroxypyrimidine.

M-Phenylenediamine derivatives, naphthols, resorcinol and resorcinol derivatives, pyrazolones and m-aminophenols are generally used as coupler components. Particularly suitable coupler substances are α-naphthol, 1, 5-, 2,7- and 1, 7-dihydroxynaphthalene, 5-amino-2-methylphenol, m-aminophenol, resorcinol, resorcinol monomethyl ether, m-phenylenediamine, 2,4-diaminophenoxyethanol, 1-phenyl-3-methyl-pyrazolon-5, 2,4-di-chloro-3-aminophenol, 1,3-bis (2,4-diaminophenoxy) propane, 2-chlororesorcinol, 4-chlororesorcinol, 2-chloro-6-methyl-3-aminophenol, 2-methylresorcinol and 5-methylresorcinol.

With regard to further customary dye components, reference is expressly made to the “Dermatology” series, edited by Ch. Culnan, H. Maibach, publisher Marcel Dekker Inc., New York, Basel, 1986, vol. 7, Ch. Zviak, The Science of Hair Care, chap. 7, pages 248-250 (direct dyes), and chap. 8, pages 264-267 (oxidation dyes), as well as the "European Inventory of Cosmetic Raw Materials", 1996, published by the European Commission, available in disk form from the Federal Association of German Industry and Trade Companies for Medicines, Health Products and Personal Care Products, Mannheim ,

With oxidation dyes intensive dyeings can be achieved with good fastness properties, but the development of the color is generally done under the influence of oxidizing agents such. B. H ₂ O ₂ , which in some cases can damage the fiber. Furthermore, some oxidation dye precursors or certain mixtures of oxidation dye precursors can sometimes have a sensitizing effect on people with sensitive skin. Direct dyes are applied under gentler conditions, but their disadvantage is that the dyeings often have inadequate fastness properties.

The object of the present invention is to provide colorants for keratin fibers, in particular human hair, which are qualitatively at least equivalent to the usual oxidation hair colorants in terms of color depth, gray coverage and fastness properties, but without necessarily relying on oxidizing agents such as e.g. B. H ₂ O _{2 to be} instructed. In addition, the colorants may have no or only a very low sensitization potential.

The object of the present invention was therefore to remedy the disadvantages of the prior art.

It was, however, surprising and unforeseeable for the person skilled in the art that the use of one or more substances selected from the group of pyrimidines and purines for enhancing the natural hair color or for stimulating the melanogenesis of human hair remedy the disadvantages of the prior art.

A particular advantage is that the present invention uses physiological processes (increased synthesis of melanin) of the skin and hair in order to obtain the desired pigmentation of the hair and thus the intensification of the hair color.

Purines represent a group of important compounds which are widespread in nature and involved in human, animal, plant and microbial metabolic processes, which are derived from the basic body of purine by substitution with OH, NH ₂ , SH in 2-, 6- and. Derive 8-position and / or with CH ₃ in 1-, 3-, 7-position.

The basic structure of purine and its derivatives is characterized by the following structure:

The purines are biosynthesized at the nucleotide level from glycine and CO ₂ as well as small molecular fragments of L-glutamine, L-aspartic acid and 10- Formyl. Purine bases are released in the metabolism, which are partially recycled in the cells, ie converted into each other.

The most important purines include adenine and guanine, which - together with the pyrimidines uracil, thymine and cytosine - are components of the nucleic acids, hypoxanthine, xanthine and uric acid as metabolites of humans and animals as well as the vegetable, often as purine Alkaloids called purines caffeine, theobromine and theophylline, which are found in coffee, cocoa and tea.

Plant growth substances to be counted among the purines are zeatin and kinetin (cytokines). The innards, especially sweetbreads (thymus), are rich in purines, and fish and green peas also contain a lot.

Pyrimidines for the purposes of the present invention are the derivatives of pyrimidine

1

cytosine

uracil

as well as thymine

In the deoxyribonucleic acid, cytosine and thymine are counterpart of adenine and guanine. The role of cytosine in the ribonucleic acid is taken over by uracil.

Surprisingly, it was found that one or more substances selected from the group of pyrimidines and purines increase the activity of the melanocytes in human skin and hair and thus also melanogenesis as a physiological process and thereby increase the natural pigmentation of the hair. This leads to an intensification of the (natural) hair color.

Preparations according to the invention advantageously contain 0.0001-20 percent by weight of one or more substances selected from the group of pyrimidines and purines, preferably purine and / or uracil and / or thymine and / or adenine and / or guanine and / or cytosine.

Preparations according to the invention preferably contain 0.001-10% by weight of one or more substances, selected from the group of pyrimidines and purines, preferably purine and / or uracil and / or thymine and / or adenine and / or guanine and / or cytosine, based on the total composition of the preparations.

Preparations according to the invention very particularly preferably contain 0.01-1% by weight of one or more substances selected from the group of pyrimidines and purines, preferably purine and / or uracil and / or thymine and / or adenine and / or guanine and / or cytosine, based on the total composition of the preparations.

According to the invention, the cosmetic and / or dermatological preparations can be composed as usual. For use, the cosmetic and dermatological preparations according to the invention are applied to the scalp and / or the hair in a sufficient amount in the manner customary for cosmetics.

The cosmetic and dermatological preparations according to the invention can contain, according to the invention, cosmetic auxiliaries as are usually used in such preparations, e.g. Preservatives, bactericides, perfumes, substances to prevent foaming, dyes, pigments that have a coloring effect, thickeners, moisturizing and / or moisturizing substances, fats, oils, waxes or other conventional components of a cosmetic or dermatological formulation such as alcohols, polyols, Polymers, foam stabilizers, electrolytes, organic solvents or silicone derivatives.

An additional level of antioxidants is generally preferred. According to the invention, all the antioxidants suitable or customary for cosmetic and / or dermatological applications can be used as favorable antioxidants.

It is also advantageous to add antioxidants to the preparations according to the invention. The antioxidants are advantageously selected from the group consisting of amino acids (eg glycine, histidine, tyrosine, tryptophan) and their derivatives, imidazoles (eg urocanic acid) and their derivatives, peptides such as D, L-carnosine, D-carnosine, L- Carosin and its derivatives (e.g. anserine), carotenoids, carotenes (e.g. carotene, ß-carotene, lycopene) and their derivatives, chlorogenic acid and their derivatives, lipoic acid and their derivatives (e.g. dihydroliponic acid), aurothioglucose, propylthiouracil and other thiols ( For example, thioredoxin, glutathione, cysteine, cystine, cystamine and their glycosyl, N-acetyl, methyl, ethyl, propyl, amyl, butyl and lauryl, palmitoyl, oleyl, γ-linoleyl, cholates - ryl and glyceryl esters) as well as their salts, dilauryl thiodipropionate, distearyl thiodipropionate, thiodipropionic acid and their derivatives (esters, ethers, peptides, lipids, nucleotides, nucleosides and salts) as well as sulfoximine compounds (e.g. buthioninsulfoximines, homocysteine sulfoximine, pentahione) Hexa-, heptathioninsulfoximine) in very low tolerable doses (eg pmol to μmol / kg), also (metal) chelators (eg α-hydroxy fatty acids, palmitic acid, phytic acid, lactoferrin), α-hydroxy acids (eg citric acid, lactic acid, malic acid) ), Humic acid, bile acid, bile extracts, bilirubin, biliverdin, EDTA, EGTA and their derivatives, unsaturated fatty acids and their derivatives (e.g. γ-linolenic acid, linoleic acid, oleic acid), folic acid and its derivatives, ubiquinone and ubiquinol and their derivatives, vitamin C and derivatives (e.g. ascorbyl palmitate, Mg ascorbyl phosphate, ascorbyl acetate), tocopherols and derivatives (e.g. vitamin E acetate), Vitamin A and derivatives (vitamin A palmitate) as well as coniferyl benzoate of benzoin, rutinic acid and its derivatives, α-glycosyl rutin, ferulic acid, furfurylidene glucitol, carnosin, butylated hydroxytoluene, butylated hydroxyanisole, nordihydroguayak resinic acid, nordihydroxy undroxyne dehydrogenated, droguydroxyne derivative, and droguajonate acid, their acid , Mannose and its derivatives, zinc and its derivatives (for example ZnO, ZnSO) selenium and its derivatives (for example selenium methionine), stilbenes and their derivatives (for example stilbene oxide, trans-stilbene oxide) and the derivatives suitable according to the invention (salts, esters, ethers, sugar) , Nucleotides, nucleosides, peptides and lipids) of these active ingredients.

The amount of the aforementioned antioxidants (one or more compounds) in the preparations according to the invention is preferably 0.001 to 30% by weight, particularly preferably 0.05-20% by weight, in particular 1-10% by weight, based on the total weight of the preparation.

If vitamin E and / or its derivatives represent the antioxidant (s), it is advantageous to choose their respective concentrations from the range of 0.001-10% by weight, based on the total weight of the formulation.

If vitamin A or vitamin A derivatives or carotenes or their derivatives represent the antioxidant or antioxidants, it is advantageous to use their respective concentrations in the range from 0.001-10% by weight, based on the total weight of the formulation, to choose.

The lipid phase can advantageously be selected from the following group of substances: mineral oils, mineral waxes

Oils, such as triglycerides of capric or caprylic acid, but preferably castor oil;

Fats, waxes and other natural and synthetic fat bodies, preferably esters of fatty acids with alcohols with a low C number, for example with isopropanol, propylene glycol or glycerol, or esters of fatty alcohols with alkanoic acids with a low C number or with fatty acids; benzoates;

Silicone oils such as dimethylpolysiloxanes, diethylpolysiloxanes, diphenylpolysiloxanes and mixed forms thereof.

The oil phase of the emulsions, oleogels or hydrodispersions or lipodispersions for the purposes of the present invention is advantageously selected from the group of esters from saturated and / or unsaturated, branched and / or unbranched alkane carboxylic acids with a chain length of 3 to 30 carbon atoms and saturated and / or unsaturated, branched and / or unbranched alcohols with a chain length of 3 to 30 C atoms, from the group of esters from aromatic carboxylic acids and saturated and / or unsaturated, branched and / or unbranched alcohols with a chain length of 3 to 30 C- atoms. Such ester oils can then advantageously be selected from the group of isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl oleate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, isooctyl stearate, isononyl stearate, isononylisononanoate, 2-ethylhexyl ethylhexyl palmitate, ^< 2-octyldodecyl palmitate, oleyl oleate, olerlerucate, erucyl oleate, erucylerucate and synthetic, semi-synthetic and natural mixtures of such esters, for example jojoba oil.

Furthermore, the oil phase can advantageously be selected from the group of branched and unbranched hydrocarbons and waxes, the silicone oils, the dialkyl ethers, the group of saturated or unsaturated, branched or unbranched alcohols, and also the fatty acid triglycerides, especially the triglycerol esters of saturated and / or unsaturated, branched and / or unbranched alkane carboxylic acids with a chain length of 8 to 24, in particular 12 - 18 carbon atoms. The fatty acid triglycerides can, for example, advantageously be selected from the group of synthetic, semisynthetic and natural oils, e.g. Olive oil, sunflower oil, soybean oil, peanut oil, rapeseed oil, almond oil, palm oil, coconut oil, palm kernel oil and the like.

Any mixtures of such oil and wax components can also be used advantageously for the purposes of the present invention. It may also be advantageous to use waxes, for example cetyl palmitate, as the sole lipid component of the oil phase. The oil phase is advantageously selected from the group consisting of 2-ethylhexyl isostearate, octyldodecanol, isotridecyl isononanoate, isoeicosane, 2-ethylhexyl cocoate, C _2- i ₅ alkyl benzoate, caprylic capric acid triglyceride, dicaprylyl ether.

Mixtures of C ₁₂ -i ₅ -alkyl benzoate and 2-ethylhexyl isostate, mixtures of C-ι _2- i ₅ -alkyl benzoate and isotridecyl isononanoate and mixtures of C _12- i ₅ alkyl benzoate, 2-ethylhexyl isostearate and isotridecyl isononanoate are particularly advantageous.

Of the hydrocarbons, paraffin oil, squalane and squalene can be used advantageously for the purposes of the present invention.

The oil phase can advantageously also have a content of cyclic or linear silicone oils or consist entirely of such oils, although it is preferred to use an additional content of other oil phase components in addition to the silicone oil or the silicone oils.

Cyclomethicone (octamethylcyclotetrasiloxane) is advantageously used as the silicone oil to be used according to the invention. However, other silicone oils can also be used advantageously for the purposes of the present invention, for example hexamethylcyclotrisiloxane, polydimethylsiloxane, poly (methylphenylsiloxane).

Mixtures of cyclomethicone and isotridecyl isononanoate, cyclomethicone and 2-ethylhexyl isostearate are also particularly advantageous.

The aqueous phase of the preparations according to the invention optionally advantageously contains

Alcohols, diols or polyols of low C number, and their ethers, preferably ethanol, isopropanol, propylene glycol, glycerin, ethylene glycol, ethylene glycol monoethyl or monobutyl ether, propylene glycol monomethyl, monoethyl or monobutyl ether, diethylene glycol monomethyl or monoethyl ether and Similar products, furthermore alcohols with a low C number, for example ethanol, isopropanol, 1, 2-propanediol, glycerol and in particular one or more thickeners, which one or more can advantageously be selected from the group consisting of silicon dioxide, aluminum silicates, polysaccharides and their derivatives, for example Hyaluronic acid, xanthan rubber, hydroxypropylmethyl cellulose, particularly advantageously from the group of polyacrylates, preferably a polyacrylate from the group of so-called carbopols, for example carbopols of types 980, 981, 1382, 2984, 5984, each individually or in combination.

The following examples are intended to illustrate the present invention without restricting it. Unless otherwise stated, all quantities, parts and percentages are based on the weight and the total amount or on the total weight of the preparations.

Example 1: Spravformulierunα

Wt .-%

Ethanol 28.00

Uracil 0.80

Ubiquinon IO 0.10

Preservatives, dyes, perfume q.s.

Propane / butane 25/75 ad 100.00

Example 2: Shower room

Wt .-%

Sodium laureth sulfate 33.00

Potassium Cocoyl Hydrolyzed Collagen (30%) 11.00

Cocoamphodiacetate (30%) 5.00

PEG-7 glyceryl cocoate 2.00

Cocamide MEA 1, 00

Sodium chloride 0.50

Uracil 0.50

Citric acid 0.02

Preservatives, dyes, perfume q.s.

Water ad 100.00

Example 3: Conditioner Shampoo with Periqlanz

Wt .-%

Polyquaternium-10 0.50

Sodium laureth sulfate 9.00

Cocoamidopropyl betaine 2.50

Pearlescent agent 2.00

Uracil 0.50

Preservative, perfume, thickener, pH adjustment and solubilizer q.s.

Water ad 100.00

The pH is adjusted to 6. Example 4: clear conditioner shampoo

Wt .-%

Polyquaternium-10 0.50

Sodium laureth sulfate 9.00

Cocoamidopropyl betaine 2.50

Uracil 0.50

Folic acid 0.20

Preservative, perfume, thickener, pH adjustment and solubilizer q.s.

Water ad 100.00

The pH is adjusted to 6.

Example 5: clear Lioht shampoo with volume effect

Wt .-%

Sodium laureth sulfate 10.00

Cocoamidopropyl betaine 2.50

Uracil 1, 00

Preservative, perfume, thickener, pH adjustment and solubilizer q.s.

Water ad 100.00

The pH is adjusted to 5.5.

Example 6: Hair treatment

Wt .-%

Hydroxypropylmethyl cellulose 0.50

Cetrimonium bromide 1, 00

Glycerin 3.00

Cetearyl alcohol 2.50

Glyceryl stearate 2.00

Uracil 0.80

Preservative, perfume, pH adjustment q.s.

Water ad 100.00 The pH is adjusted to 3.5 Example 7: Hair Rinse

GΘW .-%

Behentrimonium chloride 1, 00

Glycerin 3.00

Hydroxyethyl cellulose 0.20

Cetearyl alcohol 3.00

Uracil 1, 00

Folic acid 0.80

Preservative, perfume, pH adjustment q.s.

Water ad 100.00

The pH is adjusted to 3.0.

Claims

claims

1. Use of one or more substances selected from the group of pyrimidines and purines for enhancing the natural hair color or for stimulating the melanogenesis of human hair.

2. Use according to claim 1, characterized in that the pyrimidines and purines are selected or are selected from the group consisting of purine, uracil, thymine, adenine, guanine and cytosine.