Hair care essence with suspended oil droplets and preparation method thereof

Abstract

The invention discloses a kind of hair care essence of suspended oil droplet and preparation method thereof, specifically belong to the field of daily cosmetics;The hair care essence is made up of following mass percentage components:10 30% cyclopolydimethylsiloxane, 0.001 2% aminopolydimethylsiloxane, 0.1 5% squalane, 0.1 5% caprylic / capric triglyceride, 0.1 10% vegetable oil, 0.01 0.04% astaxanthin, 0.001 2% hydrolyzed sodium hyaluronate, 0.001 0.05% gellan gum, 1 10% dipropylene glycol, 0.1 2% panthenol, 0.01 0.1% disodium EDTA, 0.5 1% hydrolyzed wheat protein, and surplus deionized water. The hair care essence provided by the present invention can effectively improve the compliance of hair, improve the combing property of damaged hair root, meanwhile, can effectively improve the surface properties and mechanical properties of hair, has good repair effect to damaged hair.

Description

Technical Field

[0001] The present invention belongs to the field of daily cosmetics, and in particular relates to a hair care essence with suspended oil droplets and a preparation method thereof. Background Art

[0002] Traditional hair care products, particularly silicone-based conditioners, have shortcomings. Conventional silicone oils (such as dimethicone) only provide a temporary smoothing effect by physically coating the hair's surface, but they fail to penetrate deeply into the hair core to repair damaged keratin structures. Long-term use not only creates false results but also leads to residual buildup, exacerbating dryness and brittleness. Plant-based oils with repairing potential are often incorporated into formulas, but due to their polarity differences, they are poorly compatible with silicone oils, prone to phase separation or oxidative deactivation during storage and use. Furthermore, commonly used macromolecular moisturizers struggle to penetrate the damaged hair cuticle barrier, limiting their moisturizing effects to the surface and failing to penetrate deeper into the hair. Existing antioxidant systems are too weak to effectively protect against persistent oxidative damage caused by daily exposure to UV rays, heat styling, and other environmental factors. This leads to a rapid loss of smoothness and elasticity, forcing users to frequently reapply to maintain results.

[0003] Current technological improvements attempt to enhance performance by compounding silicone oils with natural oils, but have failed to build a system that synergizes deep penetration, structural repair, and long-term maintenance. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a hair care essence and a preparation method thereof that can simultaneously achieve instant softness on the surface, strong deep structure, and long-lasting and stable effects.

[0005] In order to achieve the above object, the present invention discloses the following technical solutions:

[0006] In a first aspect, the present invention discloses a hair care essence with suspended oil droplets, which is composed of the following components, by mass percentage: 10-30% cyclopolydimethylsiloxane, 0.001-2% aminopolydimethylsiloxane, 0.1-5% squalane, 0.1-5% caprylic / capric triglyceride, 0.1-10% vegetable oil, 0.01-0.04% astaxanthin, 0.001-2% hydrolyzed sodium hyaluronate, 0.001-0.05% gellan gum, 1-10% dipropylene glycol, 0.1-2% panthenol, 0.01-0.1% disodium EDTA, 0.5-1% hydrolyzed wheat protein, and the balance deionized water.

[0007] Preferably, the vegetable oil consists of baobab seed oil, sea buckthorn fruit oil and argania spinosa kernel oil.

[0008] Preferably, the hair care essence is composed of the following components, by mass percentage: 10-15% cyclopolydimethylsiloxane, 0.5-2% aminodimethylsiloxane, 0.1-1% squalane, 0.5-1% caprylic / capric triglyceride, 4.5-8.8% vegetable oil, 0.01-0.04% astaxanthin, 0.5-1% hydrolyzed sodium hyaluronate, 0.005-0.05% gellan gum, 5-8% dipropylene glycol, 0.2-2% panthenol, 0.01-0.1% disodium EDTA, 0.5-1% hydrolyzed wheat protein, and the balance deionized water.

[0009] Further preferably, the vegetable oil is composed of baobab seed oil, sea buckthorn fruit oil and argania spinosa kernel oil in a mass ratio of (0.5-0.8): (1-3): (3-5).

[0010] More preferably, the molecular weight of the hydrolyzed sodium hyaluronate is ≤7000Da.

[0011] In a second aspect, the present invention provides a method for preparing the hair care essence according to the first aspect, the preparation method comprising the following steps:

[0012] Step (1), heating cyclopolydimethylsiloxane, then adding caprylic / capric triglyceride, mixing and stirring evenly, adding squalane and amino dimethicone, mixing and stirring for 20-30 minutes, to obtain a mixed solution A;

[0013] Step (2), adding baobab seed oil, astaxanthin, sea buckthorn fruit oil and argania spinosa kernel oil to the mixed solution A in sequence, stirring evenly to obtain a mixed solution AB;

[0014] Step (3), deionized water is added with dipropylene glycol, panthenol, disodium EDTA, gellan gum, hydrolyzed wheat protein and hydrolyzed sodium hyaluronate in sequence, and the mixture is stirred and uniformly dissolved to obtain a mixed solution C;

[0015] Step (4), pumping the mixed solution AB into the mixed solution C, homogenizing and dispersing them evenly to obtain the hair care essence.

[0016] Preferably, in step (1), cyclopolydimethylsiloxane is heated to 60-70° C., caprylic / capric triglyceride is added, and the mixture is stirred at a speed of 500-600 r / min for 20-30 min. After stirring evenly, squalane and aminopolydimethylsiloxane are added, and the mixture is stirred at the same temperature and speed for 20-30 min to obtain a mixed solution A.

[0017] Preferably, in step (2), the mixed solution A is cooled to 40-50° C., and baobab seed oil, astaxanthin, sea buckthorn fruit oil and argania spinosa kernel oil are added in sequence, and stirred at 1000-1500 r / min and 40-50° C. to obtain a mixed solution AB.

[0018] Preferably, in step (3), deionized water is heated to 40-50° C., and then dipropylene glycol, panthenol, disodium EDTA, gellan gum, hydrolyzed wheat protein and hydrolyzed sodium hyaluronate are added in sequence, and mixed and stirred at 500-600 r / min to uniformly dissolve to obtain a mixed solution C.

[0019] Preferably, in step (4), the temperature of the mixed solution C is maintained at 40-50° C., the mixed solution AB is pumped into the mixed solution C, and homogenized and dispersed at a rotation speed of 6000-10000 r / min to obtain the hair care essence.

[0020] In the present invention:

[0021] Baobab seed oil is rich in fatty acids (such as palmitic acid and oleic acid) and vitamins, and has excellent permeability, nourishing, and antioxidant properties. It can penetrate deeply into the hair core, replenish lipids, enhance hair elasticity, and help stabilize other active ingredients. The absence of this ingredient in the formula provided by the present invention will weaken the formula's ability to deeply nourish, replenish hair core lipids, and achieve antioxidant synergy. Seabuckthorn fruit oil is rich in vitamin E, carotene (carotenoids), and unsaturated fatty acids, and has strong antioxidant, repair, and anti-inflammatory properties. It can protect hair from oxidative damage and promote the repair of damaged hair scales. Argania spinosa kernel oil is rich in vitamin E, phytosterols, and unsaturated fatty acids. It has excellent moisturizing, hydrating, and softening effects, and can quickly smooth hair scales, reduce friction, and increase gloss.

[0022] Astaxanthin is a powerful natural antioxidant with antioxidant capacity far exceeding that of vitamins E and C. It can effectively neutralize free radicals, protecting hair keratin and the oil / silicone components in the formula from oxidative degradation, allowing the hair care formula provided by the present invention to act on the hair effectively and for a long time.

[0023] Low-molecular-weight hydrolyzed sodium hyaluronate possesses excellent permeability, hygroscopicity, and moisturizing properties. It penetrates deeply into hair, binding significant amounts of water and significantly increasing its moisture content and elasticity. It also provides ionic bonding sites for silicone oil, enhancing its adhesion. Moisture is crucial for maintaining hair's flexibility and elasticity. The absence of low-molecule hyaluronic acid would deprive the formula of a powerful internal moisturizing component that enhances hair's elasticity. Even with external lubrication, the hair itself would still appear dry and stiff.

[0024] Gellan gum is a highly efficient water-soluble thickener that can give the product appropriate viscosity and unique rheological properties, ensuring that the product can adhere evenly and stably to the hair surface when combing and applying, and will not easily drip or be carried away by the comb.

[0025] Beneficial effects of the present invention:

[0026] 1. The hair care essence provided by the present invention can effectively improve the suppleness of hair and improve the combing properties of damaged hair roots;

[0027] 2. The hair care essence provided by the present invention has an excellent repairing effect on hair, improves the surface properties and mechanical properties of hair, and has a good repairing effect on damaged hair. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the appearance of the suspended oil droplet-shaped hair care essence prepared in Example 2. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of the present invention and are not exhaustive. For the sake of clarity, not all features of the actual embodiments are described.

[0030] Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without making any creative work shall all fall within the protection scope of the present invention.

[0031] In the present invention:

[0032] Cyclomethicone: purchased from Xinyue Silicone International Trading (Shanghai) Co., Ltd., model KF995;

[0033] Amodimethicone: purchased from Momentive (Shanghai) Trading Co., Ltd., model XF42-B1989;

[0034] Squalane: purchased from Yichun Sea Turtle Life Science Co., Ltd.

[0035] Caprylic / capric triglyceride: purchased from Oleon China FTZ Co., Ltd, model RADIA 7104

[0036] Baobab seed oil: Adansonia digitata seed oil, purchased from Evonik Operations GmbH;

[0037] Sea buckthorn fruit oil: Sea buckthorn (HIPPOPHAE RHAMNOIDES) fruit oil, purchased from Qinghai Kangpu Biotechnology Co., Ltd.;

[0038] Argania spinosa kernel oil: Argania spinosa kernel oil, purchased from Vantage Specialty Chemicals, Inc.;

[0039] Astaxanthin: purchased from Shanghai Jiayu Biotechnology Co., Ltd.

[0040] Hydrolyzed sodium hyaluronate: molecular weight ≤7000Da, purchased from Bloomage Biotechnology Co., Ltd.

[0041] Gellan gum: purchased from CP Kelco, USA;

[0042] Dipropylene glycol: purchased from CNOOC Shell Petrochemical Co., Ltd.

[0043] Panthenol: purchased from Hangzhou Xinfu Technology Co., Ltd.

[0044] Disodium EDTA: purchased from Nouryon Chemicals (Ningbo) Co., Ltd.

[0045] Hydrolyzed wheat protein: purchased from Henan Puzhilong Biotechnology Co., Ltd.

[0046] Preparation of Examples

[0047] Accurately weigh the raw materials according to the mass percentage in Table 1;

[0048] Step (1), heating cyclopolydimethylsiloxane to 65°C, then adding caprylic / capric triglyceride, mixing and stirring at a speed of 600 r / min for 25 minutes, stirring evenly, adding squalane and aminopolydimethylsiloxane, and mixing and stirring at the same temperature and speed for 30 minutes to obtain a mixed solution A;

[0049] Step (2), cooling the mixed solution A to 45° C., adding baobab seed oil, astaxanthin, sea buckthorn fruit oil and argania spinosa kernel oil in sequence, and stirring at 1000 r / min and 45° C. to obtain a mixed solution AB;

[0050] Step (3), heating deionized water to 45°C, then sequentially adding dipropylene glycol, panthenol, disodium EDTA, gellan gum, hydrolyzed wheat protein and hydrolyzed sodium hyaluronate, and mixing and stirring at 550 r / min to uniformly dissolve, to obtain a mixed solution C;

[0051] Step (4), maintaining the temperature of the mixed solution C at 45°C, pumping the mixed solution AB into the mixed solution C, and homogenizing and dispersing the mixed solution at a speed of 10000 r / min to obtain hair care essence Examples 1-4 with the appearance of suspended oil droplets, wherein the appearance of Example 2 is shown in FIG. Figure 1 .

[0052] Table 1 Mass percentage of each ingredient in hair care essence

[0053]

[0054] Preparation of Comparative Example

[0055] The raw materials were accurately weighed according to the mass percentages in Table 2, and the preparation method was carried out according to the preparation method in Example 2. Among them, Comparative Examples 1-7 were based on the formulation of Example 2 with the omission or replacement of raw materials, as shown in Table 2 for details.

[0056] Table 2 Mass percentage of each component in Comparative Examples 1-7

[0057]

[0058] Note: “ / ” in the table indicates no addition, and the molecular weight of the sodium hyaluronate is 100-150KDa.

[0059] Performance Testing

[0060] 1. Softness test

[0061] (1) Test principle: The hair combing test is to use a combing test instrument to dynamically simulate the process of people combing their hair with a comb, record the changes in friction resistance during the combing process, and characterize the smoothness of the hair after using the product.

[0062] (2) Test materials

[0063] Combing test instrument: Hair combing tester XJTF.

[0064] Flat hair bundle: damaged hair bundle, length greater than 10cm, net weight about 6g.

[0065] (3) Test samples

[0066] Examples 1-4 and Comparative Examples 1-7.

[0067] (4) Test conditions

[0068] The test environment is equipped with a temperature and humidity control system and digital temperature and humidity monitoring. The test process needs to be carried out in an environment of (23±0.5)℃ and (60±5)%RH, eliminating external interference.

[0069] (5) Test preparation

[0070] Standard cleaning solution preparation: Prepare sodium lauryl sulfate into a 10% aqueous solution.

[0071] Hair tress pretreatment: Select an untested natural hair tress and immerse it in a standard cleaning solution. Remove the hair tress after 1 hour. Apply 1.2g of the standard cleaning solution evenly to the surface of the hair tress for about 1 minute. Let it sit for about 1 minute. Rinse with running 38°C constant temperature water for 30 seconds. Drain excess water and place it in a constant temperature and humidity chamber to balance before use. Let it sit for more than 4 hours until the hair is dry.

[0072] Hair bundle preparation: Before testing, it should be screened and confirmed that there is no significant difference in combing force between the hair bundles in each group. Six hair bundles are selected for each group, and the combing force is averaged.

[0073] (6) Testing process

[0074] ①Baseline test

[0075] After preheating the instrument for 0.5 hours, set the appropriate test parameters, secure the pretreated hair tresses in the test position of the Hair Combability Tester, and begin the 12-cycle dry combing test. Place the tested tresses in a constant temperature and humidity chamber until ready for use.

[0076] ② Sample addition test

[0077] Remove the hair tresses that have completed the baseline test and evenly apply 1.2 grams of sample per tress. Apply for approximately one minute and let it sit for 72 hours. Preheat the instrument for 0.5 hours, set the appropriate test parameters, secure the treated tresses in the test position of the Hair Combability Tester, and begin 12 dry hair combing cycles.

[0078] (7) Calculation results

[0079] Calculation formula: .

[0080] Where: C O ——Combing force of baseline test; C S ——Combing force of sample addition test.

[0081] Table 3 Test results

[0082]

[0083] (8) Results analysis:

[0084] According to the experimental results, compared with Example 2, Comparative Examples 1-3 lack baobab seed oil, sea buckthorn fruit oil and argan tree kernel oil, respectively, which destroys the plant oil system composed of the three, resulting in the improvement rate of dry hair combing force dropping to 29.9%-40.0%, proving that plant oils are crucial for repairing hair scales and reducing friction.

[0085] Compared with Example 2, Comparative Example 4 lacks astaxanthin, resulting in a combing force improvement rate of only 30.05%, indicating that the antioxidant capacity of astaxanthin can protect the integrity of the silicone oil film and prolong the softening effect.

[0086] Compared to Example 2, when hydrolyzed sodium hyaluronate and gellan gum were omitted from Comparative Examples 5 and 6, respectively, the combing force improvement rate dropped to 24.8%-29.8%. This is because hydrolyzed sodium hyaluronate has excellent permeability, hygroscopicity, and moisturizing properties. Its absence leads to insufficient moisture content in the hair core, reducing the ionic bonding of silicone oil to the hair, which in turn leads to insufficient adhesion of silicone oil and vegetable oil. The absence of gellan gum also results in poor product adhesion.

[0087] Compared with Example 2, Comparative Example 7 uses high-molecular sodium hyaluronate instead of small-molecule hydrolyzed sodium hyaluronate, which reduces the permeability and affects the adhesion of silicone oil and vegetable oil to hair. The effect is significantly weaker than that of Example 2.

[0088] 2 Repair test:

[0089] Performance tests were performed on Examples 1-4 and Comparative Examples 1-7. The specific tests are as follows:

[0090] (1) 120 volunteers aged 25-35 were selected to participate in the experiment. The volunteers' hair generally showed dryness and loss of elasticity. At the same time, they had no other diseases that might affect the results of the experiment. The volunteers were randomly divided into 12 groups, with 10 people in each group. After washing their hair with the same commercially available shampoo, 11 groups of volunteers used the hair care essence products prepared in Examples 1-4 and Comparative Examples 1-7, respectively. The 12th group did not use any hair repair care products and served as the blank group. The test product was used once every two days, and each person used 10g each time for a period of two months. No other similar products were used during the trial period. There was no significant difference in the elasticity and friction properties of the volunteers' hair, and the volunteers were comparable.

[0091] (2) The elasticity of the hair of the 120 volunteers was tested using a hair tensile strength tester XJ810. The test conditions were: a pulling force of 199 g, a pre-tension of 2.5 g, a sample length of 50 mm, and 10% of the sample length was taken as the fixed elongation value (L1). Based on the measured residual elongation value (Li), the fixed elongation elasticity R (%) of the hair was calculated according to the following formula: .

[0092] Where: N is the number of measurements (10 times).

[0093] The specific test results are shown in Table 4:

[0094] Table 4 Elasticity R of each group

[0095] Group\Test Item Elasticity R / % Example 1 78.5 Example 2 81.2 Example 3 84.6 Example 4 87.3 Comparative Example 1 69.8 Comparative Example 2 65.4 Comparative Example 3 62.1 Comparative Example 4 71.5 Comparative Example 5 68.2 Comparative Example 6 60.7 Comparative Example 7 66.0 blank 35.0

[0096] Result analysis:

[0097] According to the experimental results, the hair elasticity repair effects of Comparative Examples 1-4 after lacking baobab seed oil, sea buckthorn fruit oil, argania spinosa kernel oil, and astaxanthin were not as good as those of Example 2. This is because the lack of essential fatty acids, vitamins, antioxidant active ingredients, etc., weakened the lipid barrier reconstruction ability, and the hair was continuously eroded by free radicals, causing keratin to become brittle and unable to effectively repair disulfide bond breaks. Disulfide bonds are easily attacked by oxidants and break, resulting in insufficient hair toughness.

[0098] Compared to Example 2, Comparative Examples 5 and 6 lacked hydrolyzed sodium hyaluronate and gellan gum, respectively. Without the small-molecule hydrating medium and thickening stabilizer, the hair core keratin hardened due to lack of water, limiting elasticity gains and preventing uniform adhesion of active ingredients, resulting in low actual utilization. In Comparative Example 7, when hydrolyzed sodium hyaluronate was replaced with high-molecular-weight sodium hyaluronate, the hyaluronic acid only formed a surface film and was unable to penetrate the hair core for hydration. The elasticity was significantly lower than that of Example 2, which contained small-molecule hyaluronic acid.

[0099] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A hair care essence with suspended oil droplets, characterized in that: The hair care essence is composed of the following components, by mass percentage: 12-15% cyclomethicone, 1-2% amodimethicone, 0.1-0.6% squalane, 0.7-1% caprylic / capric triglyceride, 6.6-8.8% vegetable oil, 0.02-0.04% astaxanthin, 0.5-0.8% hydrolyzed sodium hyaluronate, 0.008-0.05% gellan gum, 6-8% dipropylene glycol, 1-2% panthenol, 0.05-0.1% disodium EDTA, 0.7-1% hydrolyzed wheat protein, and the balance deionized water; The vegetable oil is composed of baobab seed oil, sea buckthorn fruit oil and argania spinosa kernel oil in a mass ratio of (0.5-0.8): (1-3): (3-5); The molecular weight of the hydrolyzed sodium hyaluronate is ≤7000Da.

2. The method for preparing the hair care essence according to claim 1, wherein: The preparation method comprises the following steps: Step (1), heating cyclopolydimethylsiloxane, then adding caprylic / capric triglyceride, mixing and stirring evenly, adding squalane and amino dimethicone, mixing and stirring for 20-30 minutes, to obtain a mixed solution A; Step (2), adding baobab seed oil, astaxanthin, sea buckthorn fruit oil and argania spinosa kernel oil to the mixed solution A in sequence, stirring evenly to obtain a mixed solution AB; Step (3), deionized water is added with dipropylene glycol, panthenol, disodium EDTA, gellan gum, hydrolyzed wheat protein and hydrolyzed sodium hyaluronate in sequence, and the mixture is stirred and uniformly dissolved to obtain a mixed solution C; Step (4), pumping the mixed solution AB into the mixed solution C, homogenizing and dispersing them evenly to obtain the hair care essence.

3. The preparation method according to claim 2, characterized in that In the step (1), cyclopolydimethylsiloxane is heated to 60-70° C., caprylic / capric triglyceride is added, and the mixture is stirred at a speed of 500-600 r / min for 20-30 minutes. After stirring evenly, squalane and aminopolydimethylsiloxane are added, and the mixture is stirred at the same temperature and speed for 20-30 minutes to obtain a mixed solution A.

4. The preparation method according to claim 2, characterized in that In the step (2), the mixed solution A is cooled to 40-50° C., and baobab seed oil, astaxanthin, sea buckthorn fruit oil and argania spinosa kernel oil are added in sequence, and stirred at 1000-1500 r / min and 40-50° C. to obtain a mixed solution AB.

5. The preparation method according to claim 2, characterized in that In the step (3), deionized water is heated to 40-50° C., and then dipropylene glycol, panthenol, disodium EDTA, gellan gum, hydrolyzed wheat protein and hydrolyzed sodium hyaluronate are added in sequence, and the mixture is stirred at 500-600 r / min to be uniformly dissolved to obtain a mixed solution C.

6. The preparation method according to claim 2, characterized in that In the step (4), the temperature of the mixed solution C is maintained at 40-50° C., the mixed solution AB is pumped into the mixed solution C, and homogenized and dispersed at a rotation speed of 6000-10000 r / min to obtain the hair care essence.

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