Elastin emulsion capable of improving toughness and elasticity of hair as well as preparation method and application of elastin emulsion

Abstract

The invention provides an elastin emulsion capable of improving the toughness and elasticity of hair and a preparation method and application thereof, the elastin emulsion comprises the following components in percentage by weight: 0.00000005-0.05% of elastin (MW5000-10000), 0.0001-0.05% of hydrolyzed keratin (MW600), 0.0001-0.05% of hydrolyzed keratin (MW1000), 0.0001-0.05% of hydrolyzed keratin (MW1000), 0.0001-0.05% of hydrolyzed keratin (MW600), 0.0001-0.05% of hydrolyzed keratin ( The invention relates to an agilawood shampoo, which is prepared from the following raw materials in percentage by weight: 0.005 to 0.5 percent of hydrolyzed keratin (MW3000), 0.001 to 0.5 percent of hydrolyzed collagen (MW1000-2000), 0.000005 to 0.1 percent of arginine / lysine polypeptide (MW2500), 0.00005 to 5 percent of small fruit coffee protein peptide (MW500-1000), 0.00001 to 0.1 percent of agilawood extract, 0.005 to 0.5 percent of peony seed oil, 0.005 to 0.5 percent of PEG-6 caprylic acid / caprin, 0.01 to 0.1 percent of hydrogenated castor oil, 0.01 to 0.1 percent of sodium laureth sulfate, 0.8 percent of phenoxyethanol, 0.15 percent of ethylhexylglycerin and the balance of water. The elastin and various protein peptides are combined and arranged according to the molecular weight to form hierarchical permeation, repair and elastic support on the hair epidermal layer and the hair core layer, so that the hair is repaired, and the toughness and elasticity of the hair are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cosmetics, and in particular to an elastin emulsion for improving the toughness and elasticity of hair, and a preparation method and application thereof. Background Art

[0002] Hair elasticity and toughness are natural properties of hair. Elasticity: refers to the ability of hair fibers to return to their original shape after being subjected to external forces. This ability is closely related to the internal structure of the hair. For example, the keratin fiber structure of hair is wavy, which allows it to slip and return to its original shape when stretched. If the hair structure is damaged, such as the loss of hair protein, the keratin damage will lose elasticity! In addition, moisturized hair is usually more elastic than dry hair, which is closely related to the integrity of the protein and amino acids in the hair structure. Toughness: refers to the ability of hair fibers to resist breaking or permanent deformation. The toughness of hair is related to the strength of its fibers, the internal disulfide bonds and hydrogen bonds, and the diameter of the hair. The disulfide bonds of hair form a strong connection that makes the entire keratin structure stronger, thereby improving its resistance to breaking. According to material theory, hair goes through multiple stages during the stretching process: a) Elastic deformation: It can be completely restored after the external force is removed. At this time, the internal structure of the hair or the protein structure has not been damaged. The deformation range at this stage is generally less than 0.5%. b) Linear deformation: It cannot be completely restored after the external force is removed. The force and deformation are in a linear relationship. At this time, the internal structure of the hair changes slightly, the van der Waals force, hydrogen bonds, and some salt bonds break, the protein gradually stretches, and the structure gradually changes from α helix to β fold. c) Elastic yield point: It can be understood as the spring is completely straightened, and the peptide chain Chemical bonds become the main resistance. The yield deformation of dry hair is generally 10~20%. Because of the presence of a large number of hydrogen bonds in wet hair, the yield deformation may increase to 30~40%. d) Post-yield stage: The resistance remains basically unchanged. As the hair gradually lengthens, chemical bonds such as disulfide bonds and peptide chains gradually open (the dissociation energy of disulfide bonds is lower than that of peptide bonds and lower than that of CC bonds). e) Fracture: All chemical bonds connected to a certain fragile point are broken, and the hair is pulled apart. The fracture deformation of dry hair is generally 30~40%. Because moisturized hair has a large number of hydrogen bonds to provide structural support, the fracture deformation can reach more than 100%.

[0003] In short, the elasticity of hair refers to its ability to return to its original shape, while toughness refers to its ability to resist fracture. Elasticity focuses on deformation recovery, while toughness focuses on the total amount of work done. Therefore, elasticity and toughness are both related and have their own mechanical characteristics.

[0004] In the past, because toughness is related to elasticity, we may have paid more attention to the toughness of hair when researching hair care products. In fact, in the process of daily hair care and protection, it is more scientific to pay attention to both the elasticity variable of hair and the total amount of hair toughness. Hair with both elasticity and toughness will be healthier. Therefore, an elastin emulsion that improves the toughness and elasticity of hair was developed. Summary of the invention

[0005] The invention provides an elastin emulsion for improving the toughness and elasticity of hair. The elastin emulsion components include, by weight, elastin (MW5000-10000) 0.0000005%-0.05%, hydrolyzed keratin (MW600) 0.0001-0.05%, hydrolyzed keratin (MW1000) 0.0001-0.05%, hydrolyzed keratin (MW3000) 0.005-0.5%, hydrolyzed collagen (MW1000-2000) 0.001-0.5%, arginine / lysine polypeptide (MW2500) 0.000005-0.1%, small fruit coffee protein peptide (MW 500-1000) 0.00005%-5%, agarwood extract 0.00001-0.1%, peony seed oil 0.005-0.5%, PEG-6 Caprylic / capric glycerides 0.005-0.5%, hydrogenated castor oil 0.01-0.1%, sodium laureth sulfate 0.01-0.1%, phenoxyethanol 0.8%, ethylhexylglycerin 0.15%, and the rest is water.

[0006] Preferably, a method for preparing an elastin emulsion for improving hair toughness and elasticity comprises the following steps: A: Heat the water in the reactor to 85°C for 30 minutes and maintain the temperature; B: Mix hydrogenated castor oil, sodium laureth sulfate and PEG-6 caprylic / capric glycerides and heat to dissolve at 80° C. to obtain phase A material for later use; C: Elastin (MW 5000-10000), hydrolyzed keratin (MW 600), hydrolyzed keratin (MW 1000), hydrolyzed keratin (MW 3000), hydrolyzed collagen (MW 1000-2000), arginine / lysine polypeptide (MW 2500), Arabica coffee protein peptide (MW 500-1000), agarwood extract, peony seed oil, PEG-6 caprylic / capric glycerides, phenoxyethanol, and ethylhexylglycerin are mixed and added with appropriate amount of water for pre-dispersion at room temperature and stirred for 30 minutes to obtain phase B material for standby use; D: Add the phase A material into the reactor and mix with water, start homogenization and stirring for 5-10 minutes, then cool to 40°C to obtain the phase C material; E: Add the pre-dispersed phase B material to the phase C material and continue stirring for 30 minutes to obtain the phase D material; F: Add appropriate amount of sodium hydroxide to the phase D material and adjust the pH to 5.5-6.5; G: Finally, the obtained phase D material is subjected to ultrasound to obtain the final elastin emulsion.

[0007] Preferably, the hydrolyzed keratin extraction process is as follows: a. First, clean and disinfect the wool; b. Soak the cleaned and disinfected wool in softener for pretreatment; c. Wash the pretreated wool again with clean water and dry at low temperature; d. Cut the low-temperature dried wool into pieces; e. Acid hydrolysis reaction: first add ionized water into the stirring kettle, start stirring, then draw in pre-weighed concentrated sulfuric acid, add shredded wool according to the proportion, perform acid hydrolysis, and obtain an acid hydrolyzate; f. Neutralization reaction: After the acid hydrolysis is completed, add barium hydroxide and slowly pour it into the acid hydrolysis solution to adjust the pH value to 5.0, and continue stirring until the pH value reaches a stable value; g. Activated carbon decolorization: After cooling to 65℃-75℃, add activated carbon, stir, and filter; h. The filtrate is pumped into a special sterilizing pot according to the ratio of hydrolyzed keratin and disodium EDTA specified in the finished product formula, and heated and sterilized. After the sterilization is completed and cooled, a preservative is added, and the mixture is packaged after being stirred evenly to obtain hydrolyzed keratin.

[0008] Preferably, the elastin emulsion is used in the production of shampoo and hair care products.

[0009] Beneficial effects: The preparation method of the present invention is simple. Elastin is combined with various protein peptides and arranged according to molecular weight to form hierarchical penetration, repair and elastic support in the scalp, hair cuticle layer and hair core layer, thereby repairing the hair, improving the toughness and elasticity of the hair, and reducing the friction of combing the hair. (2) The hydrolyzed keratin added in the present invention contains a higher content of cystine / cysteine, and the amino acid composition is similar to the amino acid composition of hair (such as high cystine / cysteine, glutamic acid content). It penetrates into the interior of the hair and constructs disulfide bonds in the damaged keratin bonds. The keratin improves the strength of the hair through the disulfide bond repair mechanism.

[0010] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 A flow chart was prepared for the present invention. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusions.

[0015] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0016] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0017] The invention provides an elastin emulsion for improving the toughness and elasticity of hair. The elastin emulsion components include, by weight, elastin (MW5000-10000) 0.0000005%-0.05%, hydrolyzed keratin (MW600) 0.0001-0.05%, hydrolyzed keratin (MW1000) 0.0001-0.05%, hydrolyzed keratin (MW3000) 0.005-0.5%, hydrolyzed collagen (MW1000-2000) 0.001-0.5%, arginine / lysine polypeptide (MW2500) 0.000005-0.1%, small fruit coffee protein peptide (MW 500-1000) 0.00005%-5%, agarwood extract 0.00001-0.1%, peony seed oil 0.005-0.5%, PEG-6 Caprylic / capric glycerides 0.005-0.5%, hydrogenated castor oil 0.01-0.1%, sodium laureth sulfate 0.01-0.1%, phenoxyethanol 0.8%, ethylhexylglycerin 0.15%, and the rest is water. The Coffea arabica protein peptide in the protein is obtained from coffee grounds. After molecular docking simulation of efficacy, and enzymatic cleavage to obtain protein peptides, experiments have shown that Coffea arabica protein peptide + recombinant elastin has anti-inflammatory and soothing effects. The elastin is recombinant elastin, which is a protein component with hair / scalp care effects screened by AI intelligence. According to AI prediction, Coffea arabica protein peptide + recombinant elastin has a protective effect on the disulfide bonds of hair keratin. Other protein ingredients are compounded on the basis of the combination of Coffea arabica protein peptide + recombinant elastin to synergistically improve performance.

[0018] Embodiment 1: The components of the elastin emulsion include, by weight, elastin (MW5000-10000) 0.0000005%, hydrolyzed keratin (MW600) 0.0001%, hydrolyzed keratin (MW1000) 0.0001%, hydrolyzed keratin (MW3000) 0.001%, hydrolyzed collagen (MW1000-2000) 0.001%, arginine / lysine polypeptide (MW2500) 0.000005%, small fruit coffee protein peptide (MW 500-1000) 0.00005%, agarwood extract 0.00001%, peony seed oil 0.005%, PEG-6 caprylic / capric glycerides 0.005%, hydrogenated castor oil 0.01%, sodium laureth sulfate 0.01-0.1%, phenoxyethanol 0.8%, ethylhexylglycerin 0.15%, and the rest is water.

[0019] In this embodiment, a method for preparing an elastin emulsion for improving hair toughness and elasticity comprises the following steps: A: Heat the water in the reactor to 85°C for 30 minutes and maintain the temperature; B: Mix hydrogenated castor oil, sodium laureth sulfate and PEG-6 caprylic / capric glycerides and heat to dissolve at 80° C. to obtain phase A material for later use; C: Elastin (MW 5000-10000), hydrolyzed keratin (MW 600), hydrolyzed keratin (MW 1000), hydrolyzed keratin (MW 3000), hydrolyzed collagen (MW 1000-2000), arginine / lysine polypeptide (MW 2500), Arabica coffee protein peptide (MW 500-1000), agarwood extract, peony seed oil, PEG-6 caprylic / capric glycerides, phenoxyethanol, and ethylhexylglycerin are mixed and added with appropriate amount of water for pre-dispersion at room temperature and stirred for 30 minutes to obtain phase B material for standby use; D: Add the phase A material into the reactor and mix with water, start homogenization and stirring for 5 minutes, then cool to 40°C to obtain the phase C material; E: Add the pre-dispersed phase B material to the phase C material and continue stirring for 30 minutes to obtain the phase D material; F: Add appropriate amount of sodium hydroxide to the phase D material and adjust the pH to 5.5; G: Finally, the obtained phase D material is subjected to ultrasound to obtain the final elastin emulsion.

[0020] In this embodiment, the hydrolyzed keratin extraction process is as follows: a. First, clean and disinfect the wool; b. Soak the cleaned and disinfected wool in softener for pretreatment; c. Wash the pretreated wool again with clean water and dry at low temperature; d. Cut the low-temperature dried wool into pieces; e. Acid hydrolysis reaction: first add ionized water into the stirring kettle, start stirring, then draw in pre-weighed concentrated sulfuric acid, add shredded wool according to the proportion, perform acid hydrolysis, and obtain an acid hydrolyzate; f. Neutralization reaction: After the acid hydrolysis is completed, add barium hydroxide and slowly pour it into the acid hydrolysis solution to adjust the pH value to 5.0, and continue stirring until the pH value reaches a stable value; g. Activated carbon decolorization: After cooling to 65°C, add activated carbon, stir, and filter; h. The filtrate is pumped into a special sterilizing pot according to the ratio of hydrolyzed keratin and disodium EDTA specified in the finished product formula, and heated and sterilized. After the sterilization is completed and cooled, a preservative is added, and the mixture is packaged after being stirred evenly to obtain hydrolyzed keratin.

[0021] Embodiment 2: The components of the elastin emulsion include, by weight, elastin (MW5000-10000) 0.005%, hydrolyzed keratin (MW600) 0.05%, hydrolyzed keratin (MW1000) 0.05%, hydrolyzed keratin (MW3000) 0.5%, hydrolyzed collagen (MW1000-2000) 0.5%, arginine / lysine polypeptide (MW 2500) 0.1%, small fruit coffee protein peptide (MW 500-1000) 0.5%, agarwood extract 0.1%, peony seed oil 0.5%, PEG-6 caprylic / capric glycerides 0.5%, hydrogenated castor oil 0.1%, sodium laureth sulfate 0.1%, phenoxyethanol 0.8%, ethylhexylglycerin 0.15%, and the rest is water.

[0022] In this embodiment, a method for preparing an elastin emulsion for improving hair toughness and elasticity comprises the following steps: A: Heat the water in the reactor to 85°C for 30 minutes and maintain the temperature; B: Mix hydrogenated castor oil, sodium laureth sulfate and PEG-6 caprylic / capric glycerides and heat to dissolve at 80° C. to obtain phase A material for later use; C: Elastin (MW 5000-10000), hydrolyzed keratin (MW 600), hydrolyzed keratin (MW 1000), hydrolyzed keratin (MW 3000), hydrolyzed collagen (MW 1000-2000), arginine / lysine polypeptide (MW 2500), Arabica coffee protein peptide (MW 500-1000), agarwood extract, peony seed oil, PEG-6 caprylic / capric glycerides, phenoxyethanol, and ethylhexylglycerin are mixed and added with appropriate amount of water for pre-dispersion at room temperature and stirred for 30 minutes to obtain phase B material for standby use; D: Add the phase A material into the reactor and mix with water, start homogenization and stirring for 10 minutes, then cool to 40°C to obtain the phase C material; E: Add the pre-dispersed phase B material to the phase C material and continue stirring for 30 minutes to obtain the phase D material; F: Add appropriate amount of sodium hydroxide to the phase D material and adjust the pH to 6.5; G: Finally, the obtained phase D material is subjected to ultrasound to obtain the final elastin emulsion.

[0023] In this embodiment, the hydrolyzed keratin extraction process is as follows: a. First, clean and disinfect the wool; b. Soak the cleaned and disinfected wool in softener for pretreatment; c. Wash the pretreated wool again with clean water and dry at low temperature; d. Cut the low-temperature dried wool into pieces; e. Acid hydrolysis reaction: first add ionized water into the stirring kettle, start stirring, then draw in pre-weighed concentrated sulfuric acid, add shredded wool according to the proportion, perform acid hydrolysis, and obtain an acid hydrolyzate; f. Neutralization reaction: After the acid hydrolysis is completed, add barium hydroxide and slowly pour it into the acid hydrolysis solution to adjust the pH value to 5.0, and continue stirring until the pH value reaches a stable value; g. Activated carbon decolorization: After cooling to 75°C, add activated carbon, stir, and filter; h. The filtrate is pumped into a special sterilizing pot according to the ratio of hydrolyzed keratin and disodium EDTA specified in the finished product formula, and heated and sterilized. After the sterilization is completed and cooled, a preservative is added, and the mixture is packaged after being stirred evenly to obtain hydrolyzed keratin.

[0024] Embodiment three: The components of the elastin emulsion include, by weight, elastin (MW5000-10000) 0.004%, hydrolyzed keratin (MW600) 0.01%, hydrolyzed keratin (MW1000) 0.01%, hydrolyzed keratin (MW3000) 0.04%, hydrolyzed collagen (MW1000-2000) 0.1%, arginine / lysine polypeptide (MW 2500) 0.02%, small fruit coffee protein peptide (MW 500-1000) 0.4%, agarwood extract 0.02%, peony seed oil 0.03%, PEG-6 caprylic / capric glycerides 0.1%, hydrogenated castor oil 0.02%, sodium laureth sulfate 0.02%, phenoxyethanol 0.8%, ethylhexylglycerin 0.15%, and the rest is water.

[0025] In this embodiment, a method for preparing an elastin emulsion for improving hair toughness and elasticity comprises the following steps: A: Heat the water in the reactor to 85°C for 30 minutes and maintain the temperature; B: Mix hydrogenated castor oil, sodium laureth sulfate and PEG-6 caprylic / capric glycerides and heat to dissolve at 80° C. to obtain phase A material for later use; C: Elastin (MW 5000-10000), hydrolyzed keratin (MW 600), hydrolyzed keratin (MW 1000), hydrolyzed keratin (MW 3000), hydrolyzed collagen (MW 1000-2000), arginine / lysine polypeptide (MW 2500), Arabica coffee protein peptide (MW 500-1000), agarwood extract, peony seed oil, PEG-6 caprylic / capric glycerides, phenoxyethanol, and ethylhexylglycerin are mixed and added with appropriate amount of water for pre-dispersion at room temperature and stirred for 30 minutes to obtain phase B material for standby use; D: Add the phase A material into the reactor and mix with water, start homogenization and stirring for 6 minutes, then cool to 40°C to obtain the phase C material; E: Add the pre-dispersed phase B material to the phase C material and continue stirring for 30 minutes to obtain the phase D material; F: Add appropriate amount of sodium hydroxide to the phase D material and adjust the pH to 5.8; G: Finally, the obtained phase D material is subjected to ultrasound to obtain the final elastin emulsion.

[0026] In this embodiment, the hydrolyzed keratin extraction process is as follows: a. First, clean and disinfect the wool; b. Soak the cleaned and disinfected wool in softener for pretreatment; c. Wash the pretreated wool again with clean water and dry at low temperature; d. Cut the low-temperature dried wool into pieces; e. Acid hydrolysis reaction: first add ionized water into the stirring kettle, start stirring, then draw in pre-weighed concentrated sulfuric acid, add shredded wool according to the proportion, perform acid hydrolysis, and obtain an acid hydrolyzate; f. Neutralization reaction: After the acid hydrolysis is completed, add barium hydroxide and slowly pour it into the acid hydrolysis solution to adjust the pH value to 5.0, and continue stirring until the pH value reaches a stable value; g. Activated carbon decolorization: After cooling to 68°C, add activated carbon, stir, and filter; h. The filtrate is pumped into a special sterilizing pot according to the ratio of hydrolyzed keratin and disodium EDTA specified in the finished product formula, and heated and sterilized. After the sterilization is completed and cooled, a preservative is added, and the mixture is packaged after being stirred evenly to obtain hydrolyzed keratin.

[0027] Embodiment 4: The components of the elastin emulsion include, by weight, elastin (MW5000-10000) 0.003%, hydrolyzed keratin (MW600) 0.04%, hydrolyzed keratin (MW1000) 0.04%, hydrolyzed keratin (MW3000) 0.4%, hydrolyzed collagen (MW1000-2000) 0.4%, arginine / lysine polypeptide (MW 2500) 0.07%, small fruit coffee protein peptide (MW 500-1000) 0.3%, agarwood extract 0.09%, peony seed oil 0.4%, PEG-6 caprylic / capric glycerides 0.4%, hydrogenated castor oil 0.08%, sodium laureth sulfate 0.09%, phenoxyethanol 0.8%, ethylhexylglycerin 0.15%, and the rest is water.

[0028] In this embodiment, a method for preparing an elastin emulsion for improving hair toughness and elasticity comprises the following steps: A: Heat the water in the reactor to 85°C for 30 minutes and maintain the temperature; B: Mix hydrogenated castor oil, sodium laureth sulfate and PEG-6 caprylic / capric glycerides and heat to dissolve at 80° C. to obtain phase A material for later use; C: Elastin (MW 5000-10000), hydrolyzed keratin (MW 600), hydrolyzed keratin (MW 1000), hydrolyzed keratin (MW 3000), hydrolyzed collagen (MW 1000-2000), arginine / lysine polypeptide (MW 2500), Arabica coffee protein peptide (MW 500-1000), agarwood extract, peony seed oil, PEG-6 caprylic / capric glycerides, phenoxyethanol, and ethylhexylglycerin are mixed and added with appropriate amount of water for pre-dispersion at room temperature and stirred for 30 minutes to obtain phase B material for standby use; D: Add the phase A material into the reactor and mix with water, start homogenization and stirring for 8 minutes, then cool to 40°C to obtain the phase C material; E: Add the pre-dispersed phase B material to the phase C material and continue stirring for 30 minutes to obtain the phase D material; F: Add appropriate amount of sodium hydroxide to the phase D material and adjust the pH to 6.3; G: Finally, the obtained phase D material is subjected to ultrasound to obtain the final elastin emulsion.

[0029] In this embodiment, the hydrolyzed keratin extraction process is as follows: a. First, clean and disinfect the wool; b. Soak the cleaned and disinfected wool in softener for pretreatment; c. Wash the pretreated wool again with clean water and dry at low temperature; d. Cut the low-temperature dried wool into pieces; e. Acid hydrolysis reaction: first add ionized water into the stirring kettle, start stirring, then draw in pre-weighed concentrated sulfuric acid, add shredded wool according to the proportion, perform acid hydrolysis, and obtain an acid hydrolyzate; f. Neutralization reaction: After the acid hydrolysis is completed, add barium hydroxide and slowly pour it into the acid hydrolysis solution to adjust the pH value to 5.0, and continue stirring until the pH value reaches a stable value; g. Activated carbon decolorization: After cooling to 72°C, add activated carbon, stir, and filter; h. The filtrate is pumped into a special sterilizing pot according to the ratio of hydrolyzed keratin and disodium EDTA specified in the finished product formula, and heated and sterilized. After the sterilization is completed and cooled, a preservative is added, and the mixture is packaged after being stirred evenly to obtain hydrolyzed keratin.

[0030] Embodiment five: The components of the elastin emulsion include, by weight, elastin (MW5000-10000) 0.002%, hydrolyzed keratin (MW600) 0.03%, hydrolyzed keratin (MW1000) 0.02%, hydrolyzed keratin (MW3000) 0.3%, hydrolyzed collagen (MW1000-2000) 0.2%, arginine / lysine polypeptide (MW2500) 0.06%, small fruit coffee protein peptide (MW 500-1000) 0.2%, agarwood extract 0.08%, peony seed oil 0.4%, PEG-6 caprylic / capric glycerides 0.3%, hydrogenated castor oil 0.07%, sodium laureth sulfate 0.07%, phenoxyethanol 0.8%, ethylhexylglycerin 0.15%, and the rest is water.

[0031] In this embodiment, a method for preparing an elastin emulsion for improving hair toughness and elasticity comprises the following steps: A: Heat the water in the reactor to 85°C for 30 minutes and maintain the temperature; B: Mix hydrogenated castor oil, sodium laureth sulfate and PEG-6 caprylic / capric glycerides and heat to dissolve at 80° C. to obtain phase A material for later use; C: Elastin (MW 5000-10000), hydrolyzed keratin (MW 600), hydrolyzed keratin (MW 1000), hydrolyzed keratin (MW 3000), hydrolyzed collagen (MW 1000-2000), arginine / lysine polypeptide (MW 2500), Arabica coffee protein peptide (MW 500-1000), agarwood extract, peony seed oil, PEG-6 caprylic / capric glycerides, phenoxyethanol, and ethylhexylglycerin are mixed and added with appropriate amount of water for pre-dispersion at room temperature and stirred for 30 minutes to obtain phase B material for standby use; D: Add the phase A material into the reactor and mix with water, start homogenization and stirring for 8 minutes, then cool to 40°C to obtain the phase C material; E: Add the pre-dispersed phase B material to the phase C material and continue stirring for 30 minutes to obtain the phase D material; F: Add appropriate amount of sodium hydroxide to the phase D material and adjust the pH to 5.8; G: Finally, the obtained phase D material is subjected to ultrasound to obtain the final elastin emulsion.

[0032] In this embodiment, the hydrolyzed keratin extraction process is as follows: a. First, clean and disinfect the wool; b. Soak the cleaned and disinfected wool in softener for pretreatment; c. Wash the pretreated wool again with clean water and dry at low temperature; d. Cut the low-temperature dried wool into pieces; e. Acid hydrolysis reaction: first add ionized water into the stirring kettle, start stirring, then draw in pre-weighed concentrated sulfuric acid, add shredded wool according to the proportion, perform acid hydrolysis, and obtain an acid hydrolyzate; f. Neutralization reaction: After the acid hydrolysis is completed, add barium hydroxide and slowly pour it into the acid hydrolysis solution to adjust the pH value to 5.0, and continue stirring until the pH value reaches a stable value; g. Activated carbon decolorization: After cooling to 72°C, add activated carbon, stir, and filter; h. The filtrate is pumped into a special sterilizing pot according to the ratio of hydrolyzed keratin and disodium EDTA specified in the finished product formula, and heated and sterilized. After the sterilization is completed and cooled, a preservative is added, and the mixture is packaged after being stirred evenly to obtain hydrolyzed keratin.

[0033] Embodiment six: The components of the elastin emulsion include, by weight, elastin (MW5000-10000) 0.001%, hydrolyzed keratin (MW600) 0.02%, hydrolyzed keratin (MW1000) 0.02%, hydrolyzed keratin (MW3000) 0.3%, hydrolyzed collagen (MW1000-2000) 0.3%, arginine / lysine polypeptide (MW 2500) 0.05%, small fruit coffee protein peptide (MW 500-1000) 0.1%, agarwood extract 0.05%, peony seed oil 0.3%, PEG-6 caprylic / capric glycerides 0.3%, hydrogenated castor oil 0.05%, sodium laureth sulfate 0.05%, phenoxyethanol 0.8%, ethylhexylglycerin 0.15%, and the rest is water.

[0034] In this embodiment, a method for preparing an elastin emulsion for improving hair toughness and elasticity comprises the following steps: A: Heat the water in the reactor to 85°C for 30 minutes and maintain the temperature; B: Mix hydrogenated castor oil, sodium laureth sulfate and PEG-6 caprylic / capric glycerides and heat to dissolve at 80° C. to obtain phase A material for later use; C: Elastin (MW 5000-10000), hydrolyzed keratin (MW 600), hydrolyzed keratin (MW 1000), hydrolyzed keratin (MW 3000), hydrolyzed collagen (MW 1000-2000), arginine / lysine polypeptide (MW 2500), Arabica coffee protein peptide (MW 500-1000), agarwood extract, peony seed oil, PEG-6 caprylic / capric glycerides, phenoxyethanol, and ethylhexylglycerin are mixed and added with appropriate amount of water for pre-dispersion at room temperature and stirred for 30 minutes to obtain phase B material for standby use; D: Add the phase A material into the reactor and mix with water, start homogenization and stirring for 8 minutes, then cool to 40°C to obtain the phase C material; E: Add the pre-dispersed phase B material to the phase C material and continue stirring for 30 minutes to obtain the phase D material; F: Add appropriate amount of sodium hydroxide to the phase D material and adjust the pH to 6; G: Finally, the obtained phase D material is subjected to ultrasound to obtain the final elastin emulsion.

[0035] In this embodiment, the hydrolyzed keratin extraction process is as follows: a. First, clean and disinfect the wool; b. Soak the cleaned and disinfected wool in softener for pretreatment; c. Wash the pretreated wool again with clean water and dry at low temperature; d. Cut the low-temperature dried wool into pieces; e. Acid hydrolysis reaction: first add ionized water into the stirring kettle, start stirring, then draw in pre-weighed concentrated sulfuric acid, add shredded wool according to the proportion, perform acid hydrolysis, and obtain an acid hydrolyzate; f. Neutralization reaction: After the acid hydrolysis is completed, add barium hydroxide and slowly pour it into the acid hydrolysis solution to adjust the pH value to 5.0, and continue stirring until the pH value reaches a stable value; g. Activated carbon decolorization: After cooling to 70°C, add activated carbon, stir, and filter; h. The filtrate is pumped into a special sterilizing pot according to the ratio of hydrolyzed keratin and disodium EDTA specified in the finished product formula, and heated and sterilized. After the sterilization is completed and cooled, a preservative is added, and the mixture is packaged after being stirred evenly to obtain hydrolyzed keratin.

[0036] Comparative Example 1: The components of the elastin emulsion include elastin (MW5000-10000) 0.002%, hydrolyzed keratin (MW3000) 0.3%, hydrolyzed collagen (MW1000-2000) 0.3%, arginine / lysine polypeptide (MW 2500) 0.05%, small fruit coffee protein peptide (MW 500-1000) 0.2%, agarwood extract 0.05%, peony seed oil 0.3%, PEG-6 caprylic / capric glycerides 0.3%, hydrogenated castor oil 0.05%, sodium laureth sulfate 0.05%, phenoxyethanol 0.8%, ethylhexylglycerin 0.15%, and the rest is water.

[0037] Comparative Example 2: The elastin emulsion components include, by weight, 0.03% hydrolyzed keratin (MW600), 0.02% hydrolyzed keratin (MW1000), 0.3% hydrolyzed keratin (MW3000), 0.2% hydrolyzed collagen (MW1000-2000), 0.06% arginine / lysine polypeptide (MW2500), 0.08% agarwood extract, 0.4% peony seed oil, 0.3% PEG-6 caprylic / capric glycerides, 0.07% hydrogenated castor oil, 0.07% sodium laureth sulfate, 0.8% phenoxyethanol, 0.15% ethylhexylglycerin, and the remainder is water.

[0038] Experimental example: The elastin emulsion prepared in each embodiment of the present invention was added to the shampoo formula (shampoo ingredients and content: 18% sodium laureth sulfate, 0.25% guar hydroxypropyltrimonium chloride, 5% cocamidopropyl betaine, 1.0% cocamidomethyl MEA, 1.5% sodium chloride, appropriate amount of citric acid, 0.8% fragrance, 2% protein emulsion, and the balance of deionized water). Volunteers used it for 15 consecutive days. After the use, the volunteers scored the perception of reduced hair breakage. If the perception of reduced hair breakage was obvious, it was rated as 10 points, and if the perception was not obvious, it was rated as 1 point. In addition, the protein emulsion shampoo was applied to the hair bundle in vitro, and the dry combing friction of the hair bundle before and after the application was tested using an Instlin universal tensile machine. The percentage of hair friction reduction before and after the application was calculated, and the following table was obtained:

[0039] It can be seen that the protein emulsion has the effect of reducing hair breakage. The effect of the embodiment applied to shampoo is better than that of the comparative example, indicating that the small molecule hydrolyzed keratin has the effect of repairing the hair core and improving the mechanical properties of the hair. After the shampoo without elastin and coffee protein peptide is applied, the reduction value of the friction of the hair bundle is lower than that of the embodiment, indicating that elastin and coffee protein peptide play a role in promoting and improving the combing property of hair in this system.

[0040] In addition, the present invention also conducts an in vitro hair efficacy test to evaluate the changes in the Young's modulus of hair and elasticity and toughness related indicators before and after the application of the embodiments and the blank group. Each group uses 6 hairs with similar diameters that have been screened. The Young's modulus of the hair is tested before the sample is applied to obtain the average value of the Young's modulus before treatment. The sample is then applied, and the Young's modulus of the hair after treatment is measured again after drying. The average value of the difference between the Young's modulus after treatment and the Young's modulus before treatment is calculated. A positive value indicates that elasticity and toughness are improved, and a negative value indicates that elasticity and toughness are reduced. The blank is treated with SDS solution; Comparative Example 1 is based on Example 2 without elastin and effect coffee peptide, and Comparative Example 2 is based on Example 4 without three different molecular weight hydrolyzed keratins. The data obtained are as follows:

[0041] The hydrolyzed keratin added in the present invention contains a higher content of cystine / cysteine, and the amino acid composition is similar to the amino acid composition of hair (such as high cystine / cysteine ​​and glutamic acid content). It penetrates into the interior of the hair and constructs disulfide bonds on the damaged keratin bonds. The keratin improves the strength of the hair through the disulfide bond repair mechanism.

[0042] In summary, the preparation method of the present invention is simple, and elastin is combined with various protein peptides, which are arranged according to molecular weight to form hierarchical penetration, repair and elastic support in the hair cuticle layer and hair core layer, thereby repairing hair and improving hair toughness and elasticity.

[0043] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An elastin emulsion for improving hair toughness and elasticity, characterized in that: The components of the elastin emulsion include elastin (MW5000-10000) 0.0000005%-0.05%, hydrolyzed keratin (MW600) 0.0001-0.05%, hydrolyzed keratin (MW1000) 0.0001-0.05%, hydrolyzed keratin (MW3000) 0.005-0.5%, hydrolyzed collagen (MW1000-2000) 0.001-0.5%, arginine / lysine polypeptide (MW2500) 0.000005-0.1%, small fruit coffee protein peptide (MW 500-1000) 0.00005%-5%, agarwood extract 0.00001-0.1%, peony seed oil 0.005-0.5%, PEG-6 Caprylic / capric glycerides 0.005-0.5%, hydrogenated castor oil 0.01-0.1%, sodium laureth sulfate 0.01-0.1%, phenoxyethanol 0.8%, ethylhexylglycerin 0.15%, and the rest is water.

2. A method for preparing an elastin emulsion for improving hair toughness and elasticity according to claim 1, characterized in that: The preparation method comprises the following steps: A: Heat the water in the reactor to 85°C for 30 minutes and maintain the temperature; B: Mix hydrogenated castor oil, sodium laureth sulfate and PEG-6 caprylic / capric glycerides and heat to dissolve at 80°C to obtain phase A material for later use; C: Elastin (MW 5000-10000), hydrolyzed keratin (MW 600), hydrolyzed keratin (MW 1000), hydrolyzed keratin (MW 3000), hydrolyzed collagen (MW 1000-2000), arginine / lysine polypeptide (MW 2500), Arabica coffee protein peptide (MW 500-1000), agarwood extract, peony seed oil, PEG-6 caprylic / capric glycerides, phenoxyethanol, and ethylhexylglycerin are mixed and added with appropriate amount of water for pre-dispersion at room temperature and stirred for 30 minutes to obtain phase B material for standby use; D: Add the phase A material into the reactor and mix with water, start homogenization and stirring for 5-10 minutes, then cool to 40°C to obtain the phase C material; E: Add the pre-dispersed phase B material to the phase C material and continue stirring for 30 minutes to obtain the phase D material; F: Add appropriate amount of sodium hydroxide to the phase D material and adjust the pH to 5.5-6.5; G: Finally, the obtained phase D material is subjected to ultrasound to obtain the final elastin emulsion.

3. The method for preparing an elastin emulsion for improving hair toughness and elasticity according to claim 2, characterized in that: The hydrolyzed keratin extraction process is as follows: a. First, clean and disinfect the wool; b. Soak the cleaned and disinfected wool in softener for pretreatment; c. Wash the pretreated wool again with clean water and dry at low temperature; d. Cut the low-temperature dried wool into pieces; e. Acid hydrolysis reaction: first add ionized water into the stirring kettle, start stirring, then draw in pre-weighed concentrated sulfuric acid, add shredded wool according to the proportion, perform acid hydrolysis, and obtain an acid hydrolyzate; f. Neutralization reaction: After the acid hydrolysis is completed, add barium hydroxide and slowly pour it into the acid hydrolysis solution to adjust the pH value to 5.0, and continue stirring until the pH value reaches a stable value; g. Activated carbon decolorization: After cooling to 65℃-75℃, add activated carbon, stir, and filter; h. The filtrate is pumped into a special sterilizing pot according to the ratio of hydrolyzed keratin and disodium EDTA specified in the finished product formula, and heated and sterilized. After the sterilization is completed and cooled, a preservative is added, and the mixture is packaged after being stirred evenly to obtain hydrolyzed keratin.

4. An application of the elastin emulsion for improving hair toughness and elasticity according to claim 1, characterized in that: The application of the elastin emulsion in producing hair care products.

5. A hair care product obtained by using the elastin emulsion for improving hair toughness and elasticity according to claim 1, characterized in that: The invention comprises shampoo, wherein the ingredients and contents of the shampoo include 18% sodium laureth sulfate, 0.25% guar hydroxypropyltrimethylammonium chloride, 5% cocamidopropyl betaine, 1.0% cocamidomethyl MEA, 1.5% sodium chloride, appropriate amount of citric acid, 0.8% essence, 2% elastin emulsion and the balance deionized water.

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