Hair protection composition and hair care product containing the same

Abstract

The present invention relates to a hair protection composition containing a polyphenol complex formed of two or more polyphenol compounds in a solvent, and a hair care product containing the same. The hair protection composition of the present invention has UV blocking properties, conductivity, and durability, and when coated on the hair it prevents static electricity, repairs and improves damaged hair, and improves hair breakage by increasing mechanical strength.

Description

Technical Field

[0001] The present disclosure relates to a hair protection composition containing a polyphenol complex formed of two or more polyphenol compounds in a solvent. It also relates to a hair care product containing the hair protection composition.

Background Art

[0002] Hair is a human tissue that does not naturally recover after being exposed to the outside. Hair is often damaged by physical and chemical factors such as perms and dyes, or environmental factors. In particular, when using a hair iron or hair dryer every day, hair damage often occurs due to high-temperature heat appliances. Wet hair is in a swollen state due to moisture, and when pressure is applied at high temperature in this state, the moisture evaporates, causing cracks in the hair cuticle, hair cortex, and hair medulla, and damaging the hair.

[0003] In order to prevent such hair damage, various hair products have been developed. For example, compositions using natural substances that are not synthetic raw materials as raw materials, compositions using silk protein, compositions using protein hydrolysis raw materials such as keratin and collagen, etc., various compositions for hair protection have been developed, but conventional hair protection hair products have limitations in protecting hair.

[0004] Therefore, there is an urgent need to manufacture a new hair composition that can effectively regenerate damaged hair and improve the hair protection function.

[0005] Therefore, the present inventors have developed a composition that can coat hair to protect hair, recover damaged hair, and prevent hair damage.

Prior Art Documents

Non-Patent Documents

[0006]

Non-Patent Document 1

[0007] The purpose of this disclosure is to provide a hair protection composition that effectively blocks ultraviolet rays, prevents static electricity generation in hair due to its high conductivity, provides a stable coating on hair even after several washes to provide a lasting hair protection effect, provides smoothness to hair damaged by frequent dyeing and bleaching, restores the hair cuticle layer, improves hair breakage, and exhibits other excellent effects such as antioxidant effect.

[0008] Furthermore, an object of this disclosure is to provide a hair care product containing the hair protection composition. [Means for solving the problem]

[0009] To achieve the above objectives, this disclosure provides a hair protection composition comprising a polyphenol complex formed of two or more polyphenol compounds in a solvent.

[0010] Furthermore, this disclosure provides a hair protection composition comprising polyphenol compounds such as catechin, tannic acid, gallic acid, resveratrol, quercetin, protocatechuic acid, p-hydroxybenzoic acid, vanillic acid, caffeic acid, ferulic acid, luteolinidin, apigenidin, and luteolin.

[0011] Furthermore, this disclosure provides a hair protection composition in which the polyphenol compound comprises two or more of the following: tannic acid, gallic acid, and caffeic acid.

[0012] Furthermore, this disclosure provides a hair protection composition comprising 1.5 to 150 parts by weight of tannic acid, 0.5 to 10 parts by weight of gallic acid, and 0.01 to 0.1 parts by weight of caffeic acid per 100 parts by weight of solvent.

[0013] Furthermore, this disclosure provides a hair protection composition comprising 10 to 50 parts by weight of tannic acid, 1 to 5 parts by weight of gallic acid, and 0.05 to 0.1 parts by weight of caffeic acid per 100 parts by weight of solvent.

[0014] Furthermore, this disclosure provides a hair protection composition in which the pH of the solvent is in the range of 7 to 9.

[0015] Furthermore, this disclosure provides a hair protection composition in which the solvent is water or a phosphate buffer.

[0016] Furthermore, this disclosure provides a hair protection composition further comprising a conductive compound.

[0017] Furthermore, this disclosure provides a hair protection composition in which the conductive compound is graphene or graphene oxide.

[0018] Furthermore, this disclosure provides a hair protection composition comprising 0.001 to 0.1 parts by weight of a conductive compound per 100 parts by weight of a solvent.

[0019] Furthermore, this disclosure provides a hair care product comprising the hair protection composition.

[0020] Furthermore, this disclosure provides a hair care product in which the hair protective composition is contained in an amount of 0.5 to 10% by weight relative to the total weight of the hair care product.

[0021] Furthermore, this disclosure provides hair care products in the form of a liquid, cream, lotion, or gel.

[0022] In addition, the present disclosure provides a hair care product that is a shampoo, conditioner, treatment, scalp tonic, wax, spray, mousse, hair lotion, hair pack, hair essence, hair cream, or hair dye.

Advantages of the Invention

[0023] The hair protection composition of the present disclosure contains a polyphenol complex formed by two or more polyphenol compounds in a solvent, thereby imparting UV blocking properties and durability to the hair, preventing the generation of static electricity in the hair due to conductivity, recovering and improving hair damage, and improving the split end phenomenon of the hair by increasing the mechanical strength. It also has an antioxidant effect and an effect of preventing discoloration of dyed hair by coating the hair.

Brief Description of the Drawings

[0024] [Figure 1] It is a schematic diagram showing the existence form of a polyphenol complex formed by polyphenol compounds, namely tannic acid, gallic acid, and caffeic acid, in a solvent. [Figure 2] It is the UV-vis spectrum result of the hair protection composition. [Figure 3] It is the experimental result of the UV blocking property of the hair protection composition. [Figure 4] It is the evaluation result of the antistatic property of the hair care product. [Figure 5] It is the result of confirming the hair surface of untreated hair (sample 1), damaged hair treated with 6% hydrogen peroxide (sample 2), damaged hair treated with 9% hydrogen peroxide (sample 3) with a shampoo of Example 29 and the control group of decolorized hair samples treated with a shampoo of Comparative Example 8 by scanning electron microscope. [Figure 6] It is the result of confirming the hair surface of sample 1 and the control group by confocal microscope. [Figure 7A] It is the evaluation result of the tensile test of the hair treated with the hair care product. [Figure 7B]This is the evaluation result of a tensile test on hair treated with hair care products. [Figure 7C] This is the evaluation result of a tensile test on hair treated with hair care products. [Figure 8] This is the result of evaluating the antioxidant properties of hair protection compositions and hair care products. [Modes for carrying out the invention]

[0025] The examples or aspects of this disclosure are illustrative for the purpose of illustrating the technical concept of this disclosure. The scope of rights relating to this disclosure is not limited to the examples or aspects presented below or specific descriptions thereof.

[0026] All technical and scientific terms used in this disclosure have meanings that would be generally understood by a person with ordinary skill in the art to which this disclosure pertains, unless otherwise specified. All terms used in this disclosure have been chosen for the purpose of making this disclosure clearer, and not to limit the scope of rights relating to this disclosure.

[0027] Expressions such as "includes," "equipped with," and "possess" used in this disclosure should be understood as open-ended terms that imply the possibility of including other embodiments, unless otherwise specified in the phrase or sentence containing such expression.

[0028] Expressions used in this disclosure, such as "consisting solely of" the said configuration, should be understood as closed-ended terms that exclude the possibility of including other configurations besides the said configuration.

[0029] Unless otherwise specified, singular expressions described in this disclosure may also have plural meanings, and this also applies to singular expressions described in the claims.

[0030] In one aspect of this disclosure, the term “approximately” is used with the intention of including manufacturing tolerances or some numerical adjustments that fall within the scope of the technical ideas of this disclosure. For example, the term “approximately” means a range of ±10%, ±5% in one aspect, and ±2% in the other aspect of the value it refers to. In the art of this disclosure, this level of approximation is appropriate unless it is specifically stated that a narrower range is required for the value.

[0031] The details of how this disclosure will be implemented are described below.

[0032] One embodiment of the present disclosure is a hair protection composition comprising a polyphenol complex formed of two or more polyphenol compounds in a solvent. The present disclosure relates to the use of a polyphenol complex composition formed of two or more polyphenol compounds in a solvent as a hair protectant. The present disclosure also relates to the use of a polyphenol complex composition formed of two or more polyphenol compounds in a solvent as a hair protectant.

[0033] It was previously unknown that a polyphenol complex composition formed from two or more polyphenol compounds in a solvent could provide excellent protective effects to hair. The inventors discovered that two or more polyphenol compounds in a solvent form a polyphenol complex through hydrogen bonding between phenols and π-π stacking. In a solvent, two or more polyphenol compounds are tightly packed together, increasing hydrogen bonding and forming a polyphenol complex (Figure 1). The inventors also discovered that when hair is treated with a hair product containing such a polyphenol complex composition formed in a solvent, it provides coating stability, high UV protection, conductivity, and durability to the hair. Furthermore, the polyphenol complex coats the hair, preventing static electricity, repairing and improving hair damage, and increasing mechanical strength, thereby improving hair breakage. The inventors also discovered that the polyphenol complex provides an antioxidant effect to hair and coats the hair to prevent discoloration of dyed hair. In other words, the inventors discovered that the polyphenol complex has a hair protective function and can be usefully used as a hair protectant.

[0034] Currently, the use of polyphenol compounds for hair dyeing is known. In this case, polyphenol compounds are included together with iron salts in hair dyes, and it is known that polyphenols and iron salts form complex compounds through coordination bonds. The present inventors have surprisingly discovered that, unlike hair dyes containing iron salts, when two or more polyphenol compounds are included in the solvent, a polyphenol complex is formed between different types of polyphenol compounds through hydrogen bonding and π-π stacking, and that this formed polyphenol complex provides an excellent hair protection effect. The polyphenol complex of this disclosure has a different bonding structure between compounds compared to cases containing iron salts. The hair protection composition containing the polyphenol complex of this disclosure is substantially iron-free.

[0035] In one embodiment of the present disclosure, the polyphenol compounds forming the polyphenol complex of the present disclosure may include, but are not limited to, catechin, tannic acid, gallic acid, resveratrol, quercetin, protocatechuic acid, p-hydroxybenzoic acid, vanillic acid, caffeic acid, ferulic acid, luteolinidin, apigenidin, and luteolin.

[0036] One embodiment of the present disclosure is a hair protection composition comprising a polyphenol complex formed of a polyphenol compound containing two or more of tannic acid, gallic acid, and caffeic acid in a solvent.

[0037] One embodiment of the present disclosure is a hair protection composition comprising a polyphenol complex formed in a solvent of polyphenol compounds containing tannic acid, gallic acid, and caffeic acid.

[0038] One embodiment of the present disclosure is a hair protection composition comprising a polyphenol complex formed in a solvent of two or more polyphenol compounds selected from the group consisting of tannic acid, gallic acid, and caffeic acid.

[0039] One embodiment of the present disclosure is a hair protection composition comprising a polyphenol complex formed of polyphenol compounds of tannic acid, gallic acid, and caffeic acid in a solvent.

[0040] Tannic acid provides UV protection due to its high UV absorbance, and its abundant surface functional groups can improve the electrical conductivity of a composition by stabilizing the molecular network. Gallic acid has plasticizing properties that improve durability, reduce brittleness and flexibility, and enhance elasticity. Caffeic acid has excellent antioxidant effects by preventing the oxidation of lipids and proteins and removing reactive oxygen species.

[0041] Furthermore, caffeic acid has a UV absorption wavelength range of 260nm to 365nm, which differs from the UV absorption wavelength range of 240nm to 320nm for tannic acid and gallic acid. Therefore, a hair protection composition containing tannic acid, gallic acid, and caffeic acid has a broad UV blocking effect across a wide wavelength range.

[0042] In one embodiment, the two or more polyphenol compounds may be present in amounts of 0.001 to 200 parts by weight, 0.001 to 100 parts by weight, 0.01 to 100 parts by weight, 0.1 to 100 parts by weight, 1 to 100 parts by weight, 0.001 to 50 parts by weight, 0.01 to 50 parts by weight, 0.1 to 50 parts by weight, 1 to 50 parts by weight, 0.001 to 20 parts by weight, 0.01 to 20 parts by weight, 0.1 to 20 parts by weight, 1 to 20 parts by weight, 0.001 to 10 parts by weight, 0.01 to 10 parts by weight, or 1 to 10 parts by weight, per 100 parts by weight of solvent, but are not limited thereto.

[0043] In one embodiment, with respect to 100 parts by weight of solvent, tannic acid may be present in amounts of 0.1 to 200 parts by weight, 1 to 200 parts by weight, 1.5 to 150 parts by weight, 1.5 to 50 parts by weight, 5 to 100 parts by weight, 5 to 50 parts by weight, 10 to 30 parts by weight, or 10 to 20 parts by weight, but is not limited thereto.

[0044] In one embodiment, with respect to 100 parts by weight of solvent, gallic acid may be present in amounts of 0.01 to 100 parts by weight, 0.05 to 50 parts by weight, 0.1 to 50 parts by weight, 0.5 to 20 parts by weight, 0.5 to 10 parts by weight, 0.5 to 5 parts by weight, 0.5 to 3 parts by weight, or 1 to 3 parts by weight, but is not limited thereto.

[0045] In one embodiment, caffeic acid may be present in amounts of 0.001 to 5 parts by weight, 0.001 to 1 part by weight, 0.001 to 0.5 parts by weight, 0.01 to 0.1 parts by weight, 0.02 to 0.08 parts by weight, 0.03 to 0.07 parts by weight, or 0.05 to 0.07 parts by weight per 100 parts by weight of solvent, but is not limited thereto.

[0046] One embodiment of the present disclosure is a hair protection composition comprising a polyphenol complex formed by containing 1.5 to 150 parts by weight of tannic acid, 0.5 to 10 parts by weight of gallic acid, and 0.01 to 0.1 parts by weight of caffeic acid per 100 parts by weight of solvent.

[0047] One embodiment of the present disclosure is a hair protection composition comprising a polyphenol complex formed by containing 10 to 50 parts by weight of tannic acid, 1 to 5 parts by weight of gallic acid, and 0.05 to 0.1 parts by weight of caffeic acid per 100 parts by weight of solvent.

[0048] One embodiment of the present disclosure is a hair protection composition comprising a polyphenol complex formed by containing 10 to 50 parts by weight of tannic acid, 1 to 5 parts by weight of gallic acid, and 0.05 to 0.1 parts by weight of caffeic acid per 100 parts by weight of solvent.

[0049] One embodiment of the present disclosure is a hair protection composition comprising a polyphenol complex formed by comprising 10 to 20 parts by weight of tannic acid, 1 to 3 parts by weight of gallic acid, and 0.05 to 0.08 parts by weight of caffeic acid per 100 parts by weight of solvent.

[0050] In one embodiment, the pH of the solvent is 1 to 13, or 2 to 10, or 7 to 9.

[0051] In one embodiment, the pH of the solvent contained in the hair protection composition is approximately 8.5.

[0052] In one embodiment, the solvent contained in the hair protection composition is not particularly limited as long as two or more polyphenol compounds can form a polyphenol complex in the solvent, and may be water, purified water, distilled water, saline solution, or phosphate buffer solution.

[0053] In one embodiment, a pH adjusting agent may be further included to adjust the pH of the solvent.

[0054] In one embodiment, the pH adjuster can be any pH adjuster that is commonly used in the industry, and one or more can be selected from aqueous hydrogen chloride solution, sodium hydroxide, potassium hydroxide, triethanolamine, citric acid, and sodium citrate.

[0055] One embodiment of the present disclosure is a hair protection composition further comprising a conductive compound.

[0056] In one embodiment, the conductive compound is graphene or graphene oxide.

[0057] In one embodiment, the conductive compound may be present in an amount of 0.001 to 0.1 parts by weight, 0.001 to 0.05 parts by weight, or 0.005 to 0.01 parts by weight per 100 parts by weight of solvent, but is not limited thereto.

[0058] In one embodiment of this disclosure, the polyphenol complex adheres to the hair through its adhesive and adsorbent properties, coating the hair and remaining on the surface of the hair even after washing the hair several times.

[0059] In one embodiment of the present disclosure, the polyphenol complex has UV blocking properties, conductivity, durability, and / or antioxidant effects, so when coated on hair it prevents static electricity, repairs and improves damaged hair, and improves hair breakage by increasing mechanical strength.

[0060] In one embodiment of this disclosure, the polyphenol complex may be used for hair protection and / or hair repair applications because it has hair protection and / or hair repair functions.

[0061] In one embodiment of this disclosure, the polyphenol complex may be used as a hair protectant because it has hair protection and hair repair functions.

[0062] In one embodiment of the present disclosure, a solvent and two or more polyphenol compounds can be added to a reaction vessel and stirred to produce a polyphenol complex.

[0063] In one embodiment, the reaction vessel can be any type commonly used in the industry without any particular limitations.

[0064] In one embodiment of the present disclosure, a polyphenol complex can be produced by adding a solvent and two or more polyphenol compounds to a reaction vessel, stirring at 100 to 300 rpm for 1 to 20 minutes at 40 to 80°C, and then stirring at room temperature for 10 to 20 hours.

[0065] In one embodiment of the present disclosure, a polyphenol complex can be produced by adding a solvent and two or more polyphenol compounds to a reaction vessel, stirring at 100 to 300 rpm for 1 to 20 minutes at 50 to 70°C, and then stirring at room temperature for 10 to 50 hours.

[0066] In one embodiment, a solvent and two or more polyphenol compounds are placed in a reaction vessel, stirred at approximately 100 to 300 rpm for 5 minutes at approximately 60°C, and then stirred at room temperature for approximately 12 hours to produce a polyphenol complex.

[0067] In one embodiment of the present disclosure, a polyphenol complex can be produced by adding a solvent and two or more polyphenol compounds to a reaction vessel, stirring at 100-300 rpm for 5 minutes at 60°C, and then stirring at room temperature for 12 hours.

[0068] One embodiment of the present disclosure is a hair care product comprising the hair protection composition described above. As described above, the hair care product of the present disclosure can be manufactured by mixing the hair protection composition comprising the polyphenol complex of the present disclosure, which is formed by stirring two or more polyphenol compounds in a solvent, with hair care ingredients appropriate for each application (e.g., a hair shampoo base, a hair treatment base).

[0069] In one embodiment, the hair protection composition may be included in an amount of 0.1 to 50% by weight, 0.1 to 20% by weight, 0.5 to 10% by weight, 1 to 10% by weight, or 1 to 5% by weight based on the total weight of the hair care product, but is not limited thereto.

[0070] In one embodiment, the hair care product may include the aforementioned hair protection composition in a conventional hair care product composition, and the conventional hair care product composition may be, but is not limited to, a shampoo, conditioner, treatment, scalp tonic, wax, spray, mousse, hair lotion, hair pack, hair essence, hair cream, or hair dye.

[0071] In one embodiment, the hair care product may be in the form of a liquid, cream, lotion, or gel.

[0072] In one embodiment, when a hair care product is formulated into a liquid dosage form, a solvent, solvating agent, or emulsifier may be used as a base component, and the base component may be, for example, water, ethanol, isopropanol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, 1,3-butyl glycol oil, glycerol aliphatic ester, polyethylene glycol, and fatty acid ester of sorbitan.

[0073] In one embodiment, when the hair care product is formulated as a cream, lotion, or gel, the base ingredients may include animal fibers, plant fibers, waxes, paraffin, starch, tracant, cellulose derivatives, polyethylene glycol, silicones, bentonite, silica, talc, and zinc oxide.

[0074] In one embodiment, the hair care product may be, but is not limited to, a shampoo, conditioner, treatment, scalp tonic, wax, spray, mousse, hair lotion, hair pack, hair essence, hair cream, or hair dye.

[0075] In one embodiment, the hair care product may further contain, but is not limited to, one or more selected from surfactants, pH adjusters, swelling agents, buffers, preservatives, fragrances, humectants, viscosity modifiers, aliphatic alcohols, and vitamins.

[0076] The surfactant can be any surfactant commonly used in the industry, and can be appropriately selected and used from among surfactants known in the industry, such as cationic surfactants, anionic surfactants, nonionic surfactants, amphoteric surfactants, or mixtures thereof, in order to achieve the effects of the present invention.

[0077] More specifically, surfactants may include alkyl sulfate (AS), alkyl ether sulfate (AES), sodium alkane sulfonate (SAS), alkyl trimethyl ammonium halide, alkyl pyridinium halide, alkyl imidazolium halide, polyethylene oxide surfactants, polyvinyl water-soluble polymers, etc. Non-limiting examples include sodium dodecyl sulfate (SDS), sodium octylbenzene sulfonate (NaOBS), sodium dodecylbenzene sulfonate (SDBS), ammonium lauryl sulfate (ALS), Triton X-100, and polyvinylpyrrolidone (PVP). It may be one or more of the following, but is not limited to pyrrolidone.

[0078] The aforementioned pH adjuster is for adjusting the pH of hair care products and can be used without any particular limitations as long as it is commonly used in the industry. One or more of the following can be used: sodium hydroxide, potassium hydroxide, triethanolamine, citric acid, and sodium citrate.

[0079] The aforementioned swelling agent can be any of those commonly used in the industry, and may be one or more selected from urea, thiourea, urea peroxide, polyoxymethylene urea, hydroxyethyl urea, ammonia, and their salts.

[0080] The buffering agent can be any type commonly used in this industry, and may be one or more selected from salicylic acid, sodium salicylate, lactic acid, and sodium lactate.

[0081] The aforementioned preservative can be used without particular limitations as long as it is commonly used in the industry, and may be one or more selected from methylparaben, propylparaben, phenoxyethanol, methyl p-hydroxybenzoate, and ethyl p-hydroxybenzoate. The aforementioned fragrance can be used without particular limitations as long as it is commonly used in the industry, and may be selected from natural fragrances or synthetic fragrances.

[0082] The aforementioned humectants can be used without any particular limitations as long as they are commonly used in this industry, and commonly used ingredients including glycols such as polyethylene glycol and oils may be used.

[0083] The viscosity modifier can be any one that is commonly used in the industry and may be one or more selected from polystearate and sodium carboxymethyl cellulose, etc. The aliphatic alcohol can be any one that is commonly used in the industry and may be one or more aliphatic alcohols having 16 to 22 carbon atoms, such as cetyl alcohol, stearyl alcohol, or behenyl alcohol, and the vitamin may be used to nourish the hair.

[0084] In one embodiment, the hair care product may also contain water in addition to the above-mentioned ingredients, and the water may be purified water such as ion-exchanged water or distilled water. Furthermore, the amount of water is not particularly limited and may be any amount sufficient to adequately dissolve or disperse the above-mentioned components.

[0085] One embodiment of the present disclosure includes a method of using a hair care product, which includes the step of applying the hair care product to the hair. When the hair care product is applied to the hair, a polyphenol complex formed from two or more polyphenol compounds contained in the hair care product adheres to the hair and coats it. The polyphenol complex contained in the hair care product coats the hair and remains on the hair surface even after washing the hair several times, protecting and repairing the hair. [Examples]

[0086] The embodiments of this disclosure are described in detail below. However, the embodiments described below are provided solely to facilitate understanding of this disclosure and are not intended to limit its scope.

[0087] Manufacturing of hair protection compositions

[0088] Examples 1-21 and Comparative Examples 1-7 1 mL of distilled water was added to the reaction vessel, and tannic acid, gallic acid, and / or caffeic acid in the amounts (in g) shown in Table 1 below were added. The mixture was then stirred at 100-300 rpm for 5 minutes at 60°C, and then stirred at room temperature for 12 hours to produce the hair protection compositions of Comparative Examples 1-7 and Examples 1-8.

[0089] To prepare the hair protection compositions of Examples 9-21, 1 mL of solvent prepared by adding 0.1N HCl or 0.1N NaOH to 1x PBS (Phosphate Buffered Saline) to adjust the pH as shown in Table 1 below, was used to add tannic acid, gallic acid, caffeic acid, and / or graphene oxide in the amounts (in g) shown in Table 1 below. The mixture was then stirred at 100-300 rpm for 5 minutes at 60°C, followed by stirring at room temperature for 12 hours.

[0090] [Table 1]

[0091] Manufacturing of hair care products containing hair protection compositions

[0092] Examples 22-30 and Comparative Examples 8-11 To produce the hair protection composition, 1 mL of distilled water was added to the reaction vessel, or 1 mL of solvent was added to 1x PBS (Phosphate Buffered Saline) with 0.1N HCl or 0.1N NaOH added to adjust the pH as shown in Table 2 below. Then, tannic acid, gallic acid, caffeic acid, and / or graphene oxide in the amounts (in g) shown in Table 2 below were added, and the mixture was stirred at 60°C for 5 minutes at room temperature at 100-300 rpm, followed by stirring at room temperature for 12 hours.

[0093] Subsequently, 30g of hair shampoo base (Modamoda, Korea) was added to the aforementioned composition as an additional ingredient for hair shampoo, and the mixture was stirred at 50°C at 50-100 rpm for 5 minutes to produce a hair protection shampoo.

[0094] Comparative Example 12 30g of hair shampoo base (Modamoda, Korea) was added to a reaction tank, followed by 0.15g of tannic acid, 0.02g of gallic acid, and 0.0006g of caffeic acid. The mixture was then stirred at 50°C at 50-100 rpm for 5 minutes to produce the shampoo.

[0095] Comparative Example 13 The shampoo was prepared in the same manner as in Example 22 described above, except that 1 mL of solvent, prepared by adding 0.1 N NaOH to 1x PBS (Phosphate Buffered Saline) and adjusting the pH to 8.5, was added to the reaction vessel, and then 0.15 g of tannic acid, 0.02 g of gallic acid, 0.0006 g of caffeic acid, and 0.001 g of FeSO4 were added.

[0096] Example 31 After adding tannic acid, gallic acid, and caffeic acid in the amounts shown in Table 2 below, a hair protection composition was prepared using the same method as in Example 22 described above.

[0097] Subsequently, 30g of hair treatment base (Modamoda, Korea) was added to the aforementioned composition as an additional ingredient for hair treatment, and the mixture was stirred at 50°C at 50-100 rpm for 5 minutes to produce a hair protection treatment.

[0098] Example 32 After adding tannic acid, gallic acid, and caffeic acid in the amounts shown in Table 2 below (unit: g), a hair protection composition was prepared using the same method as in Example 22 described above.

[0099] Subsequently, 30g of Hair Scalp Tonic Base (Modamoda, Korea) was added to the aforementioned composition as an additional ingredient for scalp tonic, and the mixture was stirred at 50°C at 50-100 rpm for 5 minutes to produce a scalp tonic for hair protection.

[0100] [Table 2]

[0101] Experimental Example 1. Confirmation of the optical properties of a hair protection composition.

[0102] (1) UV-vis spectrum of hair protection composition The compositions of Example 13 and Examples 19-21 were analyzed using UV-vis (Ubi-490, Micro Digital) to obtain UV-vis spectra (Figure 2). Figure 2 confirms that the hair protection compositions of the present invention absorb UV light. In particular, the composition of Example 13, which contains tannic acid, gallic acid, and caffeic acid, also absorbs UV light in the 380 nm to 600 nm range, confirming light absorption over a wide spectrum.

[0103] (2) Confirmation of UV blocking properties of hair protection composition The compositions of Examples 13 and 19-21 were poured into glass cuvettes, and the presence or absence of UV transmission was checked on a paper screen. A control group was used, consisting of samples in which distilled water was poured into glass cuvettes. The experimental results are shown in Figure 3.

[0104] In Figure 3, UV light was observed on the paper screen in the case of the glass cuvette containing distilled water, which was the control group, indicating that UV light was transmitted. On the other hand, in Examples 13 and 19-21, no UV light was observed on the paper screen, confirming that UV light was not transmitted.

[0105] Experimental Example 2. Confirmation of FT-IR spectra of hair protection compositions.

[0106] The compositions of Examples 1-3, 5, 13, 16, and 19-21, and the compositions of Comparative Examples 2, 5, and 7, were analyzed using FT-IR (Madison, Thermo Scientific) to identify the hydroxyl group peaks in their FT-IR spectra. The hydroxyl group peaks for each composition are shown in Table 3 below.

[0107] [Table 3]

[0108] Examples 1-3, 5, 13, 16, and 19-21 show a greater shift in the hydroxyl group peaks compared to Comparative Examples 2, 6, and 7. In Comparative Examples 2, 5, and 7, the hydroxyl group peaks do not shift because the hydrogen bonding is not strong. However, in Examples 1-3, 5, 13, 16, and 19-21, the presence of two or more polyphenols and the close packing of these compounds with each other increased hydrogen bonding, which is reflected in the shift in the hydroxyl group peaks.

[0109] Experimental Example 3. Confirmation of conductivity and surface contact angle of hair protection composition. The hair protection compositions of Examples 1-21 and Comparative Examples 1-7 were dip-coated onto silicon wafer (Si wafer) substrates at room temperature for 24 hours. After dip-coating, the substrates were washed with distilled water and then dried to obtain substrates coated with the hair protection compositions. The conductivity of the hair protection compositions on the obtained substrates was measured before and after 10 washes using a source meter (Keithley, 2450). In addition, the surface contact angle of the hair protection compositions on the obtained substrates was measured before and after 10 washes using a contact angle meter (Contact angle, DO3210, Kruss). Each measurement was performed three times. The average of the measured values ​​is shown in Table 4 below.

[0110] [Table 4]

[0111] Examples 1-21 were found to have lower resistance compared to Comparative Examples 1-7. Examples 1-21 also exhibited higher conductivity than Comparative Examples 1-7, demonstrating excellent antistatic effects by efficiently dissipating static charge from hair. In particular, Examples 13 and 19-21 showed higher conductivity than Examples 5 and 1-3. This is attributed to the ions present in the PBS solvent imparting ionic conductivity to the polyphenol components, resulting in higher conductivity.

[0112] In Examples 1-21, the resistance and surface contact angle of the coated surface remained virtually unchanged even after washing the coated surface 10 times with distilled water. This indicates that the hair protection composition of the present invention remains stably coated on the surface even after being exposed to frequent washing.

[0113] Examples 16-18 show a change in conductivity after washing, which is thought to be due to the graphene oxide further included as a conductive compound in these examples. It is believed that the non-adherent graphene oxide detaches after 10 washes, resulting in a change in conductivity, increased hydrophilicity, and a decrease in the surface contact angle.

[0114] Experimental Example 4. Evaluation of the antistatic properties of hair care products. Decolorized hair samples (eosin, Korea) were coated for 30 minutes with the hair care products prescribed in Examples 22-25, Examples 29-32, and Comparative Examples 8-11, respectively. The decolorized hair samples were washed with water, incubated at room temperature for 1 hour, and then dried using a dryer. To evaluate the antistatic properties, a rubber balloon was filled with air, rubbed three times with a cotton cloth, and then placed near the hair. The results are shown in Figure 4.

[0115] The results in Figure 4 confirm that static electricity was generated on the hair by the balloon in Comparative Examples 8-11. Examples 22-24 showed a reduction in the amount of hair adhering to the balloon compared to Comparative Examples 8-11, confirming their antistatic properties. Examples 25 and 29-32 showed no hair adhering to the balloon, confirming their excellent antistatic properties. The hair protection composition of the present invention is conductive, and hair care products containing the hair protection composition of the present invention exhibit an antistatic effect.

[0116] Experimental Example 5. Hair Restoration and Improvement Effects of Hair Care Products Hair dyeing and bleaching treatments often involve oxidizing agents such as hydrogen peroxide (H2O2), which can damage the hair. In this experiment, bleached hair samples were treated with 6% and 9% hydrogen peroxide for 12 hours and used as damaged hair. Using the shampoo hair care product from Example 29, untreated hair (Sample 1), damaged hair treated with 6% hydrogen peroxide (Sample 2), and damaged hair treated with 9% hydrogen peroxide (Sample 3) were shampooed and dried. As a control group, bleached hair samples were shampooed using the shampoo from Comparative Example 8, which does not contain polyphenol compounds, and dried. The hair surfaces of Samples 1-3 and the control group were examined using a scanning electron microscope (JSM-6700F, JEOL, Musashino, Akishima-shi, Tokyo, Japan) (Figure 5).

[0117] As shown in Figure 5, in Samples 1-3, the degree of hair cuticle damage increased according to the degree of hydrogen peroxide treatment (0%, 6%, 9%). After using the hair care product of Example 29 in Samples 1-3, the hair surface was found to be smoother, indicating that the hair care product of the present invention restores the damaged hair cuticle layer. In Figure 5, it was confirmed that there was no change in the hair cuticle before and after shampooing in the control group.

[0118] Furthermore, the coating surface of hair from Sample 1 and the control group was examined using an ECLIPSE Ti2-E confocal microscope (Nikon, Tokyo, Japan) (Figure 6). As shown in Figure 6, the control group did not show fluorescence even after shampooing. On the other hand, the hair treated with the hair care product of the present invention showed blue fluorescence, indicating that the hair protective composition of the present invention coated the entire hair. This confirmed that the hair care product of the present invention coats the hair and restores and improves damaged hair.

[0119] Experiment Example 6. Evaluation of hair care products for improving hair breakage. Hair dyeing and bleaching treatments often involve oxidizing agents such as hydrogen peroxide (H2O2), which can damage the hair. In this experiment, bleached hair samples were treated with 6% and 9% hydrogen peroxide for 12 hours and used as damaged hair. Using the shampoo hair care product of Example 29, untreated hair (Sample 1), damaged hair treated with 6% hydrogen peroxide (Sample 2), and damaged hair treated with 9% hydrogen peroxide (Sample 3) were shampooed and dried. As a control group, bleached hair samples were shampooed and dried using the shampoo of Comparative Example 8, which does not contain polyphenol compounds. Bleached hair samples were also shampooed and dried using the shampoos of Comparative Examples 12 and 13, respectively.

[0120] Tensile tests were performed on hair samples 1-3 of Example 29, Comparative Example 8, and Comparative Examples 12-13 using a universal material testing machine (SurTA Extra1A system, Chemilab Co., South Korea) (Figures 7A-7C). The measured values ​​of tensile stress and deformation for samples 1-3 of Example 29 and Comparative Example 8 are shown in Table 5 below.

[0121] [Table 5]

[0122] As shown in Table 5 above, when comparing samples 1 to 3 before and after treatment with the hair care product of the present invention, it was confirmed that the tensile stress and deformation of the hair increased after treatment. On the other hand, in the control group, there was almost no change in the tensile stress and deformation of the hair before and after treatment with the hair care product. From this, it was confirmed that the hair care product of the present invention has the effect of restoring the mechanical strength of hair and improving the phenomenon of hair breakage.

[0123] Furthermore, Example 29 is a hair care product manufactured by mixing a polyphenol complex formed from a solvent and a polyphenol compound containing tannic acid, gallic acid, and caffeic acid with a shampoo base in a hair protection composition, while Comparative Example 12 is a hair care product manufactured by directly adding tannic acid, gallic acid, and caffeic acid to a shampoo base. As can be seen from Figure 7B, Comparative Example 12 shows a significantly lower deformation rate compared to Example 29, which indicates that in the case of Comparative Example 12, the polyphenol complex was not formed and the mechanical strength was reduced.

[0124] Comparative Example 13 is a hair care product in which a composition containing a complex compound formed from tannic acid, gallic acid, and caffeic acid with an iron salt is added to a shampoo base. As can be seen from Figure 7C, Comparative Example 13 showed a significantly lower deformation rate compared to Example 29, and in particular, a significantly lower deformation rate compared to Comparative Example 8, which is a shampoo base. When a complex compound formed from a polyphenol compound and an iron salt is used, hair breakage is actually worsened, and it is judged to be unsuitable for hair protection purposes.

[0125] Experimental Example 7. Antioxidant evaluation of hair protection compositions and hair care products. A 0.2 mM DPPH (2,2-diphenyl-1-picrylhydrazyl) aqueous solution and the hair protection composition of Example 13 were mixed in a 1:1 ratio, and then the mixture was stirred at 37°C for 30 minutes while blocking out light. The DPPH inhibition rate was calculated for the mixed aqueous solution by comparing the absorbance peaks at 517 nm using UV-vis. The formula for calculating the DPPH inhibition rate is as follows.

[0126]

number

[0127] Here, A std This is the absorbance of the DPPH standard, and A sam This represents the absorbance of the sample.

[0128] The same antioxidant evaluation method was used for the hair care products of Comparative Example 8 and Example 29, and the DPPH inhibition rate was calculated.

[0129] The calculated DPPH inhibition rates were 69% for the hair protection composition in Example 13, nearly 0% for the hair care product in Comparative Example 8, and 58% for the hair care product in Example 29 (Figure 8).

[0130] This confirmed that the hair protection composition of the present invention and the hair care product containing it have antioxidant effects. In particular, since Comparative Example 8, which does not contain polyphenol compounds, showed a DPPH inhibition rate of almost 0%, it can be seen that the antioxidant effect of the hair care product of the present invention is due to the inclusion of the hair protection composition of the present invention.

[0131] Experimental Example 8. Evaluation of the prevention of discoloration of dyed hair using hair care products. Hair samples dyed red were treated with the hair care products according to Examples 29, 31 and 32, and Comparative Example 8, respectively, and then dried. The color difference values ​​(L,a) of the hair protection product compositions were measured using a colorimeter (Konica Minolta, Japan) on the hair samples before UV (302nm) irradiation and 7 days after irradiation. The values ​​are shown in Table 6 below.

[0132] [Table 6]

[0133] Table 6 above shows that the colored hair treated in Examples 29, 31, and 32 showed almost no difference in color difference values ​​(L,a) before irradiation and 7 days after irradiation compared to the colored hair treated in Comparative Example 8. The colored hair treated in Examples 29, 31, and 32 showed no discoloration due to the UV blocking effect of the hair protective composition coated on the hair.

[0134] From the above description, it will be understood that a person ordinary in the art to which this disclosure belongs can implement this disclosure in other specific forms without altering the technical idea or essential features. In this regard, the embodiments described above should be understood as illustrative and not limiting in any way. The scope of this disclosure should be interpreted as including all modified or altered forms derived from the meaning and scope of the claims described below, and their equivalent concepts, rather than from the above detailed description.

Claims

1. A hair protection composition comprising a polyphenol complex formed from two or more polyphenol compounds in a solvent.

2. The hair protection composition according to claim 1, wherein the polyphenol compound is selected from the group consisting of catechin, tannic acid, gallic acid, resveratrol, quercetin, protocatechuic acid, p-hydroxybenzoic acid, vanillic acid, caffeic acid, ferulic acid, luteolinidin, apigenidin, and luteolin, comprising two or more compounds.

3. The hair protection composition according to claim 1, wherein the polyphenol compound comprises two or more of tannic acid, gallic acid, and caffeic acid.

4. The hair protection composition according to claim 1, wherein the polyphenol compound comprises tannic acid, gallic acid, and caffeic acid.

5. The hair protection composition according to claim 3, comprising 1.5 to 150 parts by weight of tannic acid, 0.5 to 10 parts by weight of gallic acid, and 0.01 to 0.1 parts by weight of caffeic acid per 100 parts by weight of solvent.

6. The hair protection composition according to claim 3, comprising 10 to 50 parts by weight of tannic acid, 1 to 5 parts by weight of gallic acid, and 0.05 to 0.1 parts by weight of caffeic acid per 100 parts by weight of solvent.

7. The hair protection composition according to claim 1, wherein the pH of the solvent is in the range of 7 to 9.

8. The hair protection composition according to claim 1, wherein the solvent is water or a phosphate buffer.

9. The hair protection composition according to claim 1, further comprising a conductive compound.

10. The hair protection composition according to claim 9, wherein the conductive compound is graphene or graphene oxide.

11. The hair protection composition according to claim 9, comprising 0.001 to 0.1 parts by weight of a conductive compound per 100 parts by weight of a solvent.

12. A hair care product comprising the hair protection composition described in any one of claims 1 to 11.

13. The hair care product according to claim 12, wherein the hair protection composition is contained in an amount of 0.5 to 10% by weight relative to the total weight of the hair care product.

14. The hair care product according to claim 12, which is in the form of a liquid, cream, lotion, or gel.

15. A hair care product according to claim 12, which is a shampoo, conditioner, treatment, scalp tonic, wax, spray, mousse, hair lotion, hair pack, hair essence, hair cream, or hair dye.

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