Scalp oil control composition as well as preparation method and application thereof

Abstract

The invention discloses a scalp oil control composition and a preparation method and application thereof, and belongs to the technical field of daily chemical product preparation, the scalp oil control composition comprises, by mass, 20-50 parts of a component A, 0.1-5 parts of menthol, 0.05-1 part of zinc gluconate, 0.3-1 part of a preservative, 0.1-0.6 part of a pH regulator and 42.4-79.45 parts of water, the component A is obtained by mixing a compound extract of white tea, cedar and spiraea ulmus with polyhydric alcohol, performing low-temperature centrifugal separation and filtering. According to the invention, the surfactant-containing water solvent is adopted to assist ultrasonic extraction of natural functional components of plants, so that the problem of abnormal secretion of scalp grease caused by solvent residue is avoided, no extraction solvent residue is realized, and the operation is simple; meanwhile, extracts of the white tea, the cedar and the spiraea inflorescens are reasonably matched and supplement with other auxiliary components to synergistically achieve the effects of regulating scalp grease secretion, inhibiting inflammatory factors and maintaining scalp micro-ecology, so that the scalp oil control effect is achieved, and the composition can be widely applied to scalp oil control daily chemical products.

Description

Technical Field

[0001] The invention relates to the technical field of daily chemical product preparation, in particular to a scalp oil control composition and a preparation method and application thereof. Background Art

[0002] The oil on the scalp mainly comes from the oil secreted by human keratinocytes and sebaceous glands. The sebum film formed by it can protect the scalp and keep the scalp moisturized to prevent it from being too dry. However, excessive secretion of oil will bring more nutrients to the originally complex scalp microbial microecology. For example, Malassezia uses the oil secreted by the scalp as a nutrient source, and can further decompose the main component of the oil, triglycerides, into corresponding unsaturated fatty acids with relatively smaller structures, which can more easily penetrate into the skin and further cause irritation, promote more oil secretion and increase dandruff. In addition, the unsaturated fatty acids and squalene in the scalp oil are easily oxidized by oxides in the air into corresponding oil peroxides, which further cause scalp irritation, leading to itchy scalp, allergies and other problems.

[0003] The products on the market that claim to control scalp oil are mostly oil-control shampoos, most of which are mainly used to clean scalp oil and stains. The formula itself increases surfactants or reduces the use of conditioners such as silicone oil to enhance the degreasing effect and reduce deposition. However, excessive cleansing will cause a large loss of sebum membrane and even stratum corneum lipids, destroying the water-oil balance and stratum corneum barrier of the scalp. Because of the body's self-regulating mechanism, the sebaceous glands secrete more vigorously, resulting in a less obvious oil control effect.

[0004] Natural plants contain abundant active ingredients, mainly flavonoids, organic acids, terpenes and other substances. The active ingredients in different plants are also different. As green, pure and natural beauty and skin care products are gaining more and more attention, the extraction utilization rates of different plant extraction methods are also different. 106726805A discloses a cedar scented shampoo, comprising 40-50 parts of a surfactant, 2.5-2.7 parts of a foaming agent, 0.6-2.0 parts of a tackifier, 0.5-1.5 parts of a pearlescent agent, 1.2-2.4 parts of a conditioning agent, 0.1-0.5 parts of a preservative, 0.1-0.52 parts of a pigment, 0.1-0.5 parts of an essence, 5-8 parts of deionized water, 2-5 parts of a red cedar extract, 3-6 parts of a white cedar extract and 100 parts of purified water, wherein the red cedar extract and the white cedar extract are obtained by selecting red cedar or white cedar, degreasing with petroleum ether, filtering, adding ethanol solution, refluxing at a constant temperature, cooling and filtering, concentrating by vacuum distillation, extracting with water-saturated n-butanol, concentrating the n-butanol phase by vacuum distillation to a viscous state, cooling, adding methanol solution to dissolve, adding acetone to fully shake, centrifuging and precipitating, and drying, wherein a variety of solvents are used for extraction; Chinese patent document CN 113975207A discloses an antibacterial and antioxidant shampoo based on white tea extract and a preparation method thereof, revealing that white tea contains rich tea polyphenols, flavonoids and other substances, and its main components are tea elements (flavanols), phenolic acid, flavonols, phenolic acids, etc., among which catechin compounds account for 65% to 80% of the total tea polyphenols. By adding white tea and aloe extracts, the shampoo has the advantages of refreshing the scalp, cleaning and moisturizing the hair, and antibacterial and antioxidant, solving hair problems such as dry hair, split ends, frizzy hair, and easy knotting; Chinese patent document CN 111603423 A discloses an anti-dandruff composition and a preparation method and application thereof, which discloses that Spiraea ulmaria extract has anti-inflammatory and antibacterial effects, and can inhibit scalp inflammation caused by the outside world, microorganisms, oil oxides and decomposition in dandruff scalp, thereby reducing the effect of dandruff caused by inflammation. Most of the plant extracts in the prior art are extracted by solvent method, which easily leads to organic solvent residues. Solvent residues can cause scalp irritation problems. Irritation can also cause abnormal oil secretion of the scalp, which is extremely harmful to the scalp. In addition, the extraction utilization rate needs to be improved. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a scalp oil control composition and a preparation method and application thereof. The natural functional components are extracted by ultrasonic extraction assisted by a surfactant water solvent, which can avoid the scalp irritation problem caused by solvent residue and achieve no extraction solvent residue. The operation is simple and the extraction utilization rate is high. In addition, a variety of plant extract ingredients with different action mechanisms are combined to assist the remaining ingredients in enhancing the scalp oil control effect and reducing the scalp oil secretion rate and secretion amount.

[0006] The technical solution of the present invention is:

[0007] A scalp oil control composition, comprising, by mass: 20-50 parts of component A, 0.1-5 parts of menthol, 0.05-1 parts of zinc gluconate, 0.3-1 parts of preservatives, 0.1-0.6 parts of pH regulators and 42.4-79.45 parts of water;

[0008] The component A is obtained by mixing the composite extract of white tea, cedar and spirea ulmoides with polyols and performing low-temperature centrifugal separation and filtration.

[0009] Furthermore, the preservatives include phenoxyethanol and sodium benzoate; the pH adjuster is one or more of citric acid, sodium citrate, arginine, sodium hydroxide, and potassium hydroxide.

[0010] A method for preparing a scalp oil control composition comprises the following steps:

[0011] S1. Weigh white tea, cedar and spirea ulmaria, freeze-grind and sieve, use a surfactant-containing aqueous solvent to perform ultrasonic-assisted extraction on the white tea, cedar and spirea ulmaria powders, repeat the extraction twice, combine the two extracts, filter, and concentrate under reduced pressure to 1 / 2-1 / 10 of the volume of the extract to obtain a composite extract of white tea, cedar and spirea ulmaria;

[0012] S2, adding polyol to the composite extract of white tea, cedar and spirea ulmaria, mixing, centrifuging and filtering at low temperature to obtain component A;

[0013] S3. Mix component A with menthol, zinc gluconate, a preservative, a pH regulator and water and stir to obtain a scalp oil control composition.

[0014] Furthermore, the weight ratio of white tea, cedar and Spiraea ulmoides weighed in step S1 is (3-5): (1-3): (8-10).

[0015] Furthermore, the weight ratio of the surfactant to water in the surfactant-containing aqueous solvent in step S1 is 1:(15-20).

[0016] Furthermore, the surfactant in step S1 is one or more of rhamnolipid, alkyl glycosides, and sodium lauryl sulfate.

[0017] Furthermore, the ultrasonic-assisted extraction in step S1 is performed at an extraction temperature of 40-80° C., an ultrasonic power of 200-300 W, a solid-liquid ratio of 1:(5-15), and an ultrasonic extraction time of 0.5-2 h.

[0018] Furthermore, the polyols in step S2 are butanediol and propylene glycol, and the weight ratio of the two is 3:1.

[0019] Furthermore, the weight ratio of the polyol to the composite extract in step S2 is 1:(3-4).

[0020] The present invention also provides an application of the scalp oil control composition in common scalp oil control daily chemical products.

[0021] In the technical scheme of the present invention, a variety of plant extract ingredients with different action mechanisms are used to assist the other ingredients in enhancing the oil control effect of the scalp. The white tea extract contains catechins, tea polyphenols and caffeine, which can play a good antioxidant role and have an inhibitory effect on 5α-reductase, and can effectively prevent testosterone from being converted into dihydrotestosterone with stronger binding force with AR, thereby reducing the oil secretion of the scalp and preventing the unsaturated oil from oxidizing and irritating the scalp; the cedar essential oil in the cedar extract can have an antibacterial effect, which can prevent the chain reaction caused by excessive reproduction of microorganisms on the scalp from leading to abnormal oil secretion. It also contains flavonoids that can have an anti-inflammatory and analgesic effect, and also has an inhibitory effect on 5α-reductase; the elm spirea extract is rich in salicin and flavonoid glycosides, among which salicin is a polymer of salicylic acid and sugars, which can regulate the moisture content of the skin, reduce inflammation and soothe The invention discloses a novel composite extract of white tea, cedar and elm spiraea, which is extracted from three plants in a weight ratio of (3-5): (1-3): (8-10), and the obtained composite extract can better exert the efficacy of the plant active ingredients; at the same time, menthol has the effects of calming inflammation and contracting blood vessels and pores, and has a good penetration-promoting effect when used in combination with polyols, and the weight ratio of polyols to composite crude extracts is 1: (3-4), which can promote the composite crude extracts to better penetrate the scalp to reduce scalp oil secretion and inhibit bacteria; then the zinc ions in zinc gluconate can achieve the purpose of increasing the solubilization degree by adjusting the micelle aggregation number and the critical micelle concentration, and at the same time, in shampoo products, it can also regulate the speed of flocculation during the shampooing process. In addition, zinc ions are also important trace elements in the human body, and have a certain inhibitory effect on 5α-reductase, which can synergistically enhance the oil control effect on the scalp.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention adopts a surfactant-containing aqueous solvent to assist ultrasonic extraction of natural functional components of three plants: white tea, cedar and elm spirea, wherein the surfactant and water are mixed in a weight ratio of 1: (15-20), which can avoid scalp irritation caused by solvent residue, reduce abnormal scalp oil secretion caused by irritation, and achieve no extraction solvent residue.

[0024] 2. The present invention extracts three plants, white tea, cedar and spiraea ulmaria, in a weight ratio of (3-5): (1-3): (8-10). The obtained composite extract can better exert its efficacy, and is compounded with an auxiliary component, polyol, in a weight ratio of (3-4): 1. When used in combination with menthol, it also has a good penetration-promoting effect, promoting the effective ingredients to better penetrate the scalp to reduce scalp oil secretion and inhibit bacteria. The zinc ions in the zinc gluconate can achieve the purpose of increasing the degree of solubilization by adjusting the micelle aggregation number and the critical micelle concentration. At the same time, in shampoo products, the speed of flocculation during the shampooing process can also be regulated.

[0025] 3. The scalp oil control composition of the present invention can regulate the oil secretion of the scalp, inhibit excessive reproduction of microorganisms, inhibit inflammatory factors, and maintain the scalp microecology, thereby achieving the effect of scalp oil control. It has a wide range of applications and a simple preparation method. It can be widely used in shampoo products, essences, and other products that require scalp oil control effects. DETAILED DESCRIPTION

[0026] The experimental methods in the following examples of the present invention, where no specific conditions are specified, are usually carried out under conventional conditions or under conditions recommended by the manufacturers. The various commonly used chemical reagents used in the examples are all commercially available products.

[0027] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. The following examples further describe the present invention, but the examples are not intended to limit the scope of the present invention.

[0028] Example 1: A scalp oil control composition and preparation method thereof

[0029] The preparation process of this embodiment is:

[0030] S1. Weigh the ingredients of white tea, cedar and elm spirea in a weight ratio of 4:2:9, freeze and crush through a 50-mesh sieve, add 10 times the weight of water and a surfactant rhamnolipid in a weight ratio of water: surfactant of 1:20 to the white tea, cedar and elm spirea powder, then ultrasonicate the white tea, cedar and elm spirea powder at 300W for 2h at 50°C, repeat the extraction twice, filter and combine the filtrate, and concentrate under reduced pressure and low temperature to 1 / 3 of the volume of the extract to obtain a composite crude extract of white tea, cedar and elm spirea;

[0031] S2. Add 1 / 3 of the mass of butanediol and propylene glycol (the mass ratio of butanediol to propylene glycol is 3:1) to the composite crude extract of white tea, cedar and elm spirea, mix well, centrifuge at 6000 rpm / min for 10 min at 4°C, and filter the supernatant to obtain component A;

[0032] S3. Take 35 parts by weight of component A, 2 parts by weight of menthol, 0.5 parts by weight of zinc gluconate, 0.5 parts by weight of sodium benzoate, 0.2 parts by weight of citric acid, and 61.8 parts by weight of pure water and mix them evenly to obtain the scalp oil control composition of this embodiment.

[0033] Example 2: A scalp oil control composition and preparation method thereof

[0034] The preparation process of this embodiment is:

[0035] S1. White tea, cedar and elm spirea are mixed in a weight ratio of 4:1:10, and then crushed through a 50-mesh sieve after freezing. 12.5 times of water and a surfactant sodium lauryl sulfate are added to the white tea, cedar and elm spirea powders in a weight ratio of 1:15. Then, the white tea, cedar and elm spirea powders are ultrasonically treated at 250W for 2h at 65°C, and the extraction is repeated twice. The filtrate is filtered and combined, and the filtrate is concentrated at reduced pressure and low temperature to 1 / 2.5 of the volume of the extract to obtain a composite crude extract of white tea, cedar and elm spirea;

[0036] S2, add 1 / 4 of the mass of the composite crude extract of white tea, cedar and elm spirea, butylene glycol and propylene glycol (the weight ratio of butylene glycol to propylene glycol is 3:1), mix well, centrifuge at 7000 rpm / min at 4°C for 8 minutes, and then filter and take the supernatant to obtain component A;

[0037] S3. Take 35 parts by mass of component A, 2 parts by mass of menthol, 0.5 parts by mass of zinc gluconate, 0.5 parts by mass of sodium benzoate, 0.2 parts by mass of citric acid, and 38.2 parts by mass of pure water and mix them evenly to obtain the scalp oil control composition of this embodiment.

[0038] Example 3: A scalp oil control composition and preparation method thereof

[0039] The preparation process of this embodiment is:

[0040] S1. Weigh the ingredients of white tea, cedar and elm spirea according to a weight ratio of 5:2:8, freeze and crush through a 50-mesh sieve, add 10 times the weight of water and a surfactant, decyl glucoside, to the white tea, cedar and elm spirea powders in a weight ratio of water: surfactant of 1:20, then ultrasonically treat the white tea, cedar and elm spirea powders at 50°C and 300W for 2h, repeat the extraction twice, filter and combine the filtrates, and concentrate under reduced pressure and low temperature to 1 / 3 of the volume of the extract to obtain a composite crude extract of white tea, cedar and elm spirea;

[0041] S2, add 1 / 3 of the mass of the composite crude extract of white tea, cedar and elm spirea, butylene glycol and propylene glycol (the weight ratio of butylene glycol to propylene glycol is 3:1), mix well, centrifuge at 6000 rpm / min at 4°C for 10 min, and then filter and take the supernatant to obtain component A;

[0042] S3. Take 35 parts by mass of component A, 2 parts by mass of menthol, 0.5 parts by mass of zinc gluconate, 0.5 parts by mass of sodium benzoate, 0.2 parts by mass of citric acid, and 38.2 parts by mass of pure water and mix them evenly to obtain the scalp oil control composition of this embodiment.

[0043] Example 4: A scalp oil control composition and preparation method thereof

[0044] The preparation process of this embodiment is:

[0045] S1. Weigh white tea, cedar and elm spirea according to a weight ratio of 9:4:2, freeze and crush through a 50-mesh sieve, add 5 times the weight of water and a surfactant rhamnolipid according to a weight ratio of water: surfactant of 1:30 to the white tea, cedar and elm spirea powder, then ultrasonicate the white tea, cedar and elm spirea powder at 40°C and 300W for 0.5h, repeat the extraction twice, filter and combine the filtrate, and concentrate under reduced pressure and low temperature to 1 / 10 of the volume of the extract to obtain a composite crude extract of white tea, cedar and elm spirea;

[0046] S2. Add 1 / 1 of the weight of butanediol and propylene glycol (the weight ratio of butanediol to propylene glycol is 3:1) to the composite crude extract of white tea, cedar and elm spirea, mix well, centrifuge at 5000 rpm / min for 30 min at 10°C, filter and take the supernatant to obtain component A;

[0047] S3. Take 35 parts by mass of component A, 2 parts by mass of menthol, 0.5 parts by mass of zinc gluconate, 0.5 parts by mass of sodium benzoate, 0.2 parts by mass of citric acid, and 38.2 parts by mass of pure water and mix them evenly to obtain the scalp oil control composition of this embodiment.

[0048] Example 5: A scalp oil control composition and preparation method thereof

[0049] The preparation process of this embodiment is:

[0050] S1. Weigh the ingredients of white tea, cedar and elm spirea in a weight ratio of 8:5:2, freeze and crush through a 50-mesh sieve, add 15 times the weight of water and a surfactant rhamnolipid in a weight ratio of water: surfactant of 1:10 to the white tea, cedar and elm spirea powder, then ultrasonicate the white tea, cedar and elm spirea powder at 80°C and 200W for 2h, repeat the extraction twice, filter and combine the filtrate, and concentrate under reduced pressure and low temperature to 1 / 2 of the volume of the extract to obtain a composite crude extract of white tea, cedar and elm spirea;

[0051] S2, add 1 / 5 of the mass of the composite crude extract of white tea, cedar and elm spirea, butylene glycol and propylene glycol (the weight ratio of butylene glycol to propylene glycol is 3:1), mix well, centrifuge at 8000 rpm / min at 4°C for 5 min, and then filter and take the supernatant to obtain component A;

[0052] S3. Take 35 parts by mass of component A, 2 parts by mass of menthol, 0.5 parts by mass of zinc gluconate, 0.5 parts by mass of sodium benzoate, 0.2 parts by mass of citric acid, and 38.2 parts by mass of pure water and mix them evenly to obtain the scalp oil control composition of this embodiment.

[0053] Example 6: A scalp oil control composition and preparation method thereof

[0054] The preparation process of this embodiment is:

[0055] S1. Weigh white tea, cedar and elm spirea according to a weight ratio of 3:4:8, freeze and crush through a 50-mesh sieve, add 8 times of water to the white tea, cedar and elm spirea powder and add surfactant rhamnolipid according to a weight ratio of water: surfactant of 1:25, ultrasonically treat the white tea, cedar and elm spirea powder at 45°C and 300W for 1.5h, repeat the extraction twice, filter and combine the filtrate, and concentrate under reduced pressure and low temperature to 1 / 5 of the volume of the extract to obtain a composite crude extract of white tea, cedar and elm spirea;

[0056] S2, add 1 / 2 of the mass of the composite crude extract of white tea, cedar and elm spirea, butylene glycol and propylene glycol (the weight ratio of butylene glycol to propylene glycol is 3:1), mix evenly, centrifuge at 8°C and 5500 rpm / min for 20 min, and then filter and take the supernatant to obtain component A;

[0057] S3. Take 35 parts by mass of component A, 2 parts by mass of menthol, 0.5 parts by mass of zinc gluconate, 0.5 parts by mass of sodium benzoate, 0.2 parts by mass of citric acid, and 38.2 parts by mass of pure water and mix them evenly to obtain the scalp oil control composition of this embodiment.

[0058] Example 7-10 A scalp oil control composition and preparation method

[0059] The preparation process of Examples 7-10 is:

[0060] S1. Weigh the ingredients of white tea, cedar and elm spirea in a weight ratio of 4:2:9, freeze and crush through a 50-mesh sieve, add 10 times the weight of water and a surfactant rhamnolipid in a weight ratio of water: surfactant of 1:20 to the white tea, cedar and elm spirea powder, then ultrasonicate the white tea, cedar and elm spirea powder at 300W for 2h at 50°C, repeat the extraction twice, filter and combine the filtrate, and concentrate under reduced pressure and low temperature to 1 / 3 of the volume of the extract to obtain a composite crude extract of white tea, cedar and elm spirea;

[0061] S2, add 1 / 3 of the mass of the composite crude extract of white tea, cedar and elm spirea, butylene glycol and propylene glycol (the mass ratio of butylene glycol to propylene glycol is 3:1), mix well, centrifuge at 6000 rpm / min at 4°C for 10 min, and then filter and take the supernatant to obtain component A;

[0062] S3. According to the formula in Table 1, the raw materials in respective mass parts are uniformly mixed to prepare a scalp oil control composition.

[0063] Table 1 Combination and mass fraction of each component in the scalp oil control composition:

[0064] Composition and mass fraction of ingredients Example 7 Example 8 Example 9 Example 10 Component A 20 50 27.5 42.5 Menthol 5 0.1 3.5 1 Zinc gluconate 0.05 1 0.3 0.75 preservative 0.5 0.3 1 0.5 pH Adjusters 0.2 0.1 0.6 0.2 Pure water 74.25 48.5 67.1 55.05

[0065] Comparative Example 1

[0066] The difference between this comparative example and Example 1 is that the composite crude extract does not contain white tea extract, and the weight ratio of the raw materials of cedar and spiraea ulmaria during extraction is 3:12.

[0067] Comparative Example 2

[0068] The difference between this comparative example and Example 1 is that the composite crude extract does not contain cedar extract, and the weight ratio of the raw materials white tea and spiraea ulmaria during extraction is 4.5:10.5.

[0069] Comparative Example 3

[0070] The difference between this comparative example and Example 1 is that the composite crude extract does not contain the Spiraea ulmoides plant extract, and the weight ratio of the raw materials white tea and cedar during extraction is 10:5.

[0071] Comparative Example 4

[0072] The difference between this comparative example and Example 1 is that the scalp oil control composition does not contain menthol.

[0073] Comparative Example 5

[0074] The difference between this comparative example and Example 1 is that the scalp oil control composition does not contain the composite crude extract of white tea, cedar and spiraea ulmaria.

[0075] Comparative Example 6

[0076] The difference between this comparative example and Example 1 is that no surfactant is added to assist the extraction, and the solvent extraction process in the prior art CN106726805 A is selected.

[0077] Comparative Example 7

[0078] The difference between this comparative example and Example 1 is that no polyol is added to component A.

[0079] Comparative Example 8

[0080] The difference between this comparative example and Example 1 is that the weight ratio of butanediol to propylene glycol in the polyol is 2:2.

[0081] Comparative Example 9

[0082] The difference between this comparative example and Example 1 is that the weight ratio of the polyol to the composite crude extract is 1:2.

[0083] Test Example 1: Test on the reduction rate of scalp oil after using the essence

[0084] 1. Test samples: The scalp oil control compositions prepared in Examples 1-6 and Comparative Examples 1-9 were respectively formulated into scalp essences with oil control efficacy according to the formulas in Table 2, using conventional essence water preparation processes, and the formulas are shown in Table 2:

[0085] Table 2: Formula and mass fraction of an essence with oil control effect

[0086] Components Mass fraction % water Up to 100 Component A 20 Menthol 0.3 Zinc gluconate 0.5 preservative 0.5 pH Adjuster 0.2 glycerin 3 Sodium Hyaluronate 0.2 PEG-40 Hydrogenated Castor Oil 0.1 EDTA-2Na 0.05

[0087] 2. Test method: 150 volunteers aged 20-45 were selected, including 75 males and 75 females, and were evenly divided into 15 groups, with 5 males and 5 females in each group. Each group used the essence containing the oil control composition of Examples 1-6 and Comparative Examples 1-9. The volunteers were required to use the essence in a semi-dry state after washing their hair, 5 g each time, and continued to use it for 28 days. The essence sample should not be replaced during use, and other hair care products such as shampoo and conditioner should not be replaced. The scalp oil content at a designated position was tested by an oil testing instrument Sebumeter SM815. The data were measured 3 times (error ±10), and the average value was taken. The degree of reduction of scalp sebum on the 0th day and the 28th day after using the essence was compared, and the scalp oil reduction rate = (scalp oil content on the 0th day of use - scalp oil content after the 28th day of use) / scalp oil content before use × 100% was calculated to determine the degree of oil reduction.

[0088] 3. Test results:

[0089] Table 3 Scalp oil reduction rate test results

[0090]

[0091]

[0092] From the test results in Table 3, it can be seen that the oil control effect of the essence of Examples 1-3 is better than that of the essence of Examples 4-6, indicating that the weight ratio of the raw materials white tea, cedar, and elm spirea in the plant extract is controlled to be (3-5): (1-3): (8-10) for extraction and compounding, which has a synergistic effect and can effectively exert the efficacy of the three plant extracts. In addition, the weight ratio of water to surfactant in the surfactant-containing aqueous solvent in Examples 4-6 is not controlled to be 1: (15-20), which will also affect the extraction efficiency and effective ingredients of the three plants, thereby reducing the oil control effect; among them, Example 1 is the best embodiment of the present invention; the oil control effect of the essence of Comparative Examples 1-3 is also slightly worse than that of the essence of Example 1, indicating that the lack of a certain plant raw material extraction in the composite crude extract will affect its oil control effect; Comparative Example 4 lacks menthol and loses the ability to cooperate with polyols The penetration-promoting effect of the combination of the three plants leads to the inability of the effective ingredients of the composition to play a better role, thereby reducing the oil control effect; in Comparative Example 5, due to the lack of the composite crude extract of the three plants, the oil reduction rate is only 8.2%, indicating that the scalp oil control composition of the present invention mainly uses the extracts of the three plants of white tea, cedar and elm spirea to play an oil control role; in Comparative Example 6, no surfactant is added to assist the extraction during the plant extraction process, but a conventional solvent extraction process is selected, which is easy to cause scalp irritation and abnormal oil secretion, thereby greatly reducing the oil control effect, and the surfactant can improve the extraction rate and utilization rate of the oil control effective substances in the scalp oil control composition of the present invention; in Comparative Examples 7-9, since no polyol is added or the ratio of the polyol is changed, it cannot be used in combination with menthol to play a penetration-promoting effect, thereby reducing the oil control effect of the scalp oil control composition of the present invention.

[0093] Test Example 2: Test on scalp oil control after using shampoo

[0094] 1. Test samples: The scalp oil control compositions prepared in Examples 1, 7-10 and Comparative Examples 4-9 were respectively formulated into shampoos with oil control efficacy according to the formulas in Table 4, using conventional shampoo preparation processes, and the formulas are shown in Table 4:

[0095] Table 4 Components and mass fractions of a shampoo with oil control effect

[0096]

[0097]

[0098] 2. Test method: A total of 110 volunteers aged 20-45 were selected, including 55 men and 55 women. The volunteers scored their oil control experience: ≤1 for very greasy, 1-2 for relatively greasy, 2-3 for generally greasy, 3-4 for relatively refreshing, and 4-5 for very refreshing. The volunteers were required to use products other than those tested in this test and scored their oil control experience ≤1 in 2 days. The volunteers were required to wash their hair every 3 days, and the volunteers were interviewed and scored before washing their hair on the 3rd, 7th, and 14th days. , the shampoo sample must not be replaced during use, and the use of hair care products such as conditioners is prohibited; the volunteers were evenly divided into 11 groups, with 5 men and 5 women in each group. After each group of volunteers wet their hair, they used shampoos containing the oil control compositions prepared in Examples 1, 7-10 and Comparative Examples 4-9, respectively. Each person took a one-yuan coin-sized amount of shampoo in the palm of his hand, evenly applied it on the head, rubbed it for 3 to 5 minutes, and then rinsed it with clean water. After continuous use for a period of time, the oil control effect was evaluated and scored.

[0099] 3. Test results:

[0100] Table 5 Oil control effect scoring table

[0101]

[0102]

[0103] From the test results in Table 5 above, it can be seen that after using the shampoos of Examples 1 and 7-10, the volunteers scored better than the shampoos of Comparative Examples 4-9, indicating that there is a synergistic effect between the white tea extract, cedar extract, spiraea ulmaria extract, menthol, polyols, and surfactants, and their combined use can effectively improve the oil control effect and has a significant effect on scalp oil control. However, due to the lack of menthol, Comparative Example 4 cannot be used in combination with polyols to promote penetration, so that the effective ingredients of the composition cannot play a better role, thereby reducing the oil control effect; due to the lack of plant extracts, the oil control effect of Comparative Example 5 is extremely poor, indicating that the oil control effect of the scalp oil control composition of the present invention is mainly exerted by plant extracts; Comparative Example 6 does not add surfactants to assist in extraction during the plant extraction process, but chooses a conventional solvent extraction process, which easily causes scalp irritation and abnormal oil secretion, thereby greatly reducing the oil control effect, indicating that surfactants can improve the extraction rate and utilization rate of the oil control effective substances in the scalp oil control composition of the present invention, and surfactants can also form a flocculation effect during the shampooing process, making the oil control effect of the oil control composition more significant; Comparative Examples 7-9 do not add polyols or the ratio of polyols changes, so they cannot be used in combination with menthol to promote penetration, resulting in a decrease in the oil control effect of the scalp oil control composition of the present invention.

[0104] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A scalp oil control composition, characterized in that: The invention comprises, by weight, 20-50 parts of component A, 0.1-5 parts of menthol, 0.05-1 parts of zinc gluconate, 0.3-1 parts of preservatives, 0.1-0.6 parts of pH regulators and 42.4-79.45 parts of water; the component A is obtained by mixing a composite extract of white tea, cedar and spirea ulmaria with a polyol, and then subjecting the mixture to low-temperature centrifugal separation and filtration.

2. The scalp oil control composition according to claim 1, characterized in that The preservatives include phenoxyethanol and sodium benzoate; the pH adjuster is one or more of citric acid, sodium citrate, arginine, sodium hydroxide and potassium hydroxide.

3. A method for preparing the scalp oil control composition according to any one of claims 1 to 2, characterized in that: The steps include: S1. Weigh white tea, cedar and spirea ulmaria, freeze-grind and sieve, use a surfactant-containing aqueous solvent to perform ultrasonic-assisted extraction on the white tea, cedar and spirea ulmaria powders, repeat the extraction twice, combine the two extracts, filter, and concentrate under reduced pressure to 1 / 2-1 / 10 of the volume of the extract to obtain a composite extract of white tea, cedar and spirea ulmaria; S2, adding polyol to the composite extract of white tea, cedar and spirea ulmaria, mixing, centrifuging and filtering at low temperature to obtain component A; S3. Mix component A with menthol, zinc gluconate, a preservative, a pH regulator and water and stir to obtain a scalp oil control composition.

4. The method for preparing the scalp oil control composition according to claim 3, characterized in that: The weight ratio of white tea, cedar and Spiraea ulmoides weighed in step S1 is (3-5): (1-3): (8-10).

5. The method for preparing the scalp oil control composition according to claim 3, characterized in that: The weight ratio of the surfactant to water in the surfactant-containing aqueous solvent in step S1 is 1:(15-20).

6. The method for preparing the scalp oil control composition according to claim 3, characterized in that: The surfactant in step S1 is one or more of rhamnolipid, alkyl glycosides, and sodium lauryl sulfate.

7. The method for preparing the scalp oil control composition according to claim 3, characterized in that: The ultrasonic assisted extraction in step S1 is performed at an extraction temperature of 40-80° C., an ultrasonic power of 200-300 W, a solid-liquid ratio of 1:(5-15), and an ultrasonic extraction time of 0.5-2 h.

8. The method for preparing the scalp oil control composition according to claim 3, characterized in that: The polyols in step S2 are butanediol and propylene glycol, and the weight ratio of the two is 3:

1.

9. The method for preparing the scalp oil control composition according to claim 3, characterized in that: The weight ratio of the polyol to the composite crude extract in step S2 is 1:(3-4).

10. Use of the scalp oil control composition according to any one of claims 1 to 2 in common scalp oil control daily chemical products.

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