Cosmetic composition with oil control, pore shrinking and moisturizing repair functions and application thereof

Abstract

The embodiment of the present application provides a cosmetic composition with oil control, pore shrinking and moisturizing repair functions and application thereof. The cosmetic composition comprises, by weight percentage, 50-85% of Hamamelis virginiana water, 10-25% of butanediol, 1-5% of 1,2-pentanediol and 0.1-1% of decanediol, based on the total weight of the cosmetic composition. The cosmetic composition provided by the embodiment of the present application can not only achieve rapid oil control, but also achieve moisturizing, ensure skin water and oil balance through the effects of rapid oil control and moisturizing, avoid the occurrence of sebaceous gland compensatory secretion, form a virtuous cycle, and can quickly shrink pores and enhance skin barrier function.

Description

Technical Field

[0001] This application relates to the field of cosmetic technology, specifically to a cosmetic composition with oil-controlling, pore-minimizing, moisturizing and repairing functions and its application. Background Technology

[0002] Oily skin, due to its overactive sebaceous glands, requires the use of cleansing products to remove excess oil. Currently, North American witch hazel extract, rich in tannins, is widely used in cosmetics for oil control and pore minimizing. However, using North American witch hazel extract as a single component for oil control and pore minimizing has limitations in terms of slow effectiveness, long-lasting oil control, and water-oil balance. Furthermore, most existing products that offer rapid oil control and pore minimizing often contain irritating ingredients (such as ethanol), which can damage the skin barrier, exacerbating sebum secretion, and fail to provide moisturizing benefits.

[0003] Therefore, how to achieve rapid oil control while maintaining water-oil balance and enhancing skin barrier function is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0004] The purpose of this application is to provide a cosmetic composition and its application that has oil-controlling, pore-shrinking and moisturizing / repairing functions.

[0005] To achieve the above objectives, the embodiments of this application propose the following technical solutions: In a first aspect, embodiments of this application provide a cosmetic composition having oil-controlling, pore-minimizing, and moisturizing / repairing functions, wherein, by weight percentage, the cosmetic composition comprises: North American witch hazel water: 50-85%; Butylene glycol: 10-25%; 1,2-Pentanediol: 1-5%; Decanediol: 0.1-1%; Based on the total weight of the cosmetic composition.

[0006] Secondly, embodiments of this application propose the use of the cosmetic composition described in the first aspect in the preparation of skin care products that improve and / or alleviate oily skin.

[0007] As one embodiment, the content of the cosmetic composition is 0.5-15%, based on the total weight of the skin care product.

[0008] As one embodiment, the content of the cosmetic composition is 1-10%, based on the total weight of the skin care product.

[0009] In one embodiment, the content of the cosmetic composition is 3-6%, based on the total weight of the skin care product.

[0010] As one implementation, the skincare product also includes at least one cosmetic additive.

[0011] In one embodiment, the cosmetic additive is selected from one or more of solvents, oils, emulsifiers, thickeners, pH adjusters, preservatives, and fragrances.

[0012] In one embodiment, the symptoms of oily skin include one or more of the following: excessive sebum secretion, enlarged pores, rough skin, impaired skin barrier function, and acne.

[0013] Thirdly, embodiments of this application propose the use of a combination of North American witch hazel water, butylene glycol, 1,2-pentanediol, and decanediol in the preparation of cosmetic compositions that improve and / or alleviate oily skin.

[0014] In one embodiment, the cosmetic composition contains 50-85% witch hazel water, 10-25% butylene glycol, 1-5% 1,2-pentanediol, and 0.1-1% decanediol, based on the total weight of the cosmetic composition.

[0015] Compared with the prior art, the embodiments of this application have at least the following beneficial effects: The cosmetic composition provided in this application not only achieves rapid oil control but also moisturizes. Through the effects of rapid oil control and moisturizing, it ensures the skin's water-oil balance, avoids compensatory secretion of sebaceous glands, and forms a virtuous cycle. At the same time, it can quickly shrink pores and enhance the skin barrier.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the pore density test results in Example 1; Figure 2 This is a schematic diagram of the pore count test results in Example 1; Figure 3 This is a schematic diagram of the pore volume test results in Example 1; Figure 4 This is a schematic diagram of the test results for pore area in Example 1; Figure 5 This is a schematic diagram of the test results for skin lipid content in Example 1; Figure 6 This is a schematic diagram of the water content test results in Example 1; Figure 7This is a schematic diagram of the test results for transdermal water loss rate in Example 1. Detailed Implementation

[0018] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0019] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0020] It should also be understood that the terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. As used in the embodiments of this application and the appended claims, unless the context clearly indicates otherwise, the singular forms "a," "an," and "the" are intended to include the plural forms.

[0021] The following explanations of some terms and raw materials used in this embodiment will help those skilled in the art to understand them. All percentages in the following raw materials are by weight.

[0022] The technical solution of this embodiment will now be described in detail.

[0023] First, let me describe the cosmetic composition in the first aspect of this embodiment.

[0024] In existing technologies, North American witch hazel extract, rich in astringent active ingredients such as tannins, is widely used in oil-controlling and pore-minimizing cosmetics because it can shrink sebaceous gland ducts and reduce residual oil on the skin surface. However, using North American witch hazel extract as a single component for oil control and pore minimization has limitations in terms of slow onset of action, long-lasting oil control, and water-oil balance.

[0025] Firstly, the oil-controlling and astringent activity of North American witch hazel extract mainly relies on polyphenolic components such as tannins. Its function is to temporarily constrict the opening of sebaceous gland ducts and reduce the excretion of oil to the skin surface through a mild cross-linking reaction with the proteins in the stratum corneum of the skin surface. Unlike the immediate chemical / physical strong intervention of highly irritating components (such as high concentrations of alcohol and strong acidic components) (such as alcohol rapidly evaporating and removing surface oil and sweat, and acids rapidly exfoliating the stratum corneum and opening pore channels), the cross-linking reaction between tannins and skin proteins is a gradual and mild process, which cannot achieve immediate effects.

[0026] Secondly, the active ingredients in North American witch hazel extract, such as tannins and flavonoids, have large molecular weights and are mostly water-soluble. The stratum corneum of the skin has a hydrophobic lipid bilayer structure, which hinders the transdermal absorption of active ingredients. As a result, the active ingredients in North American witch hazel extract cannot quickly penetrate the stratum corneum to reach the deep sebaceous gland ducts. They can only accumulate slowly on the skin surface and require a long time to reach an effective concentration sufficient to trigger astringent and oil-controlling effects.

[0027] Furthermore, the astringent effect of North American witch hazel extract is mostly a short-term physical effect, making it difficult to achieve long-term oil control from the perspective of regulating sebaceous gland secretion. At the same time, the target of its single component is limited to the keratin and sebaceous gland duct openings on the skin surface, and it cannot act on multiple oil control-related targets such as sebaceous gland secretion regulation, stratum corneum metabolism, and skin moisture retention. Therefore, it cannot regulate the dynamic balance between the moisture content of the stratum corneum and sebaceous gland secretion, or enhance the skin barrier function.

[0028] As mentioned earlier, there are various limitations to using a single component of North American witch hazel extract for oil control and pore shrinking. In order to achieve the goal of rapid oil control and pore shrinking, highly irritating components (such as alcohol) are usually added. Although highly irritating components can achieve rapid oil control, they are prone to damaging the lipid structure of the stratum corneum and the connections between keratinocytes, thus damaging the integrity of the skin barrier. After the skin barrier is damaged, the transepidermal water loss rate increases significantly, and the sebaceous glands will initiate a compensatory secretion mechanism to make up for the loss of skin protection function, thus forming a vicious cycle of oil control - barrier damage - excessive sebum secretion - oil control again, thereby aggravating skin barrier damage.

[0029] Furthermore, the active ingredients in North American witch hazel extract, such as tannins and flavonoids, are relatively unstable and easily affected by the pH value of the components / formulation, resulting in insufficient content of active ingredients and weakening the effect of North American witch hazel extract.

[0030] In view of this, this embodiment proposes a cosmetic composition with oil control, pore tightening and moisturizing repair functions. By weight percentage, the cosmetic composition of this embodiment includes: 50-85% North American witch hazel water, 10-25% butylene glycol, 1-5% 1,2-pentanediol, and 0.1-1% decanediol, based on the total weight of the cosmetic composition.

[0031] The North American witch hazel water is obtained by collecting the bark and leaves of the North American witch hazel tree, drying them naturally, chopping them, and then extracting them using steam distillation to obtain a hydrophilic aqueous extract. The North American witch hazel water is further mixed with butylene glycol, 1,2-pentanediol, and decanediol, and filtered to obtain the cosmetic composition of this invention.

[0032] One kilogram of dried North American witch hazel plants can be used to prepare 20 kilograms of the cosmetic composition of this invention.

[0033] Understandably, compared to existing technologies, this embodiment achieves rapid oil control by utilizing a variety of mild ingredients. Furthermore, due to the low irritation and moisturizing properties of the ingredients, it not only does not damage the skin barrier but also maintains the water-oil balance through rapid oil control and moisturizing, preventing compensatory sebum secretion. Combined with the pore-minimizing effects of North American witch hazel water, it strengthens the skin barrier.

[0034] The relevant raw materials in the cosmetic composition of this embodiment will be further described below.

[0035] Those skilled in the art will know that rapid oil control usually means using ingredients with strong cleansing power and high irritation, which can lead to excessive oil control. Excessive oil control can damage the skin barrier, which weakens the skin's ability to retain moisture and stimulates the sebaceous glands to secrete compensatory secretions, creating a vicious cycle of "the more you control oil, the oilier your skin becomes."

[0036] The cosmetic composition of this embodiment can not only achieve rapid oil control, but also moisturize. Through the effects of rapid oil control and moisturizing, it can ensure the skin's water-oil balance, avoid compensatory secretion of sebaceous glands, and form a virtuous cycle. It can also quickly shrink pores and enhance the skin barrier.

[0037] Specifically, firstly, butylene glycol and 1,2-pentanediol can promote the rapid penetration of the active ingredients in North American witch hazel water into the deep layers of the skin, accelerating the transdermal penetration rate of the active ingredients. This allows for the achievement of an effective concentration sufficient to trigger astringent and oil-controlling effects within a short time, shortening the onset time of the North American witch hazel water. The accelerated penetration rate of the North American witch hazel water can quickly constrict the sebaceous gland ducts, thereby rapidly reducing the amount of oil excreted to the skin surface, achieving rapid oil control. Furthermore, due to the reduction in surface oil, the skin microenvironment is more conducive to the cross-linking reaction between polyphenolic components such as tannins and the proteins in the stratum corneum. In other words, the rapid oil control effect also increases the reaction rate between the active ingredients in the North American witch hazel water and the proteins in the stratum corneum, thus achieving the goal of rapidly shrinking pores.

[0038] Secondly, as mentioned above, the combination of butylene glycol, 1,2-pentanediol, and witch hazel water can quickly control oil and shrink pores. At the same time, decanediol can inhibit Propionibacterium acnes, and 1,2-pentanediol also has an antibacterial effect. The two work together to inhibit bacterial growth, prevent bacterial damage to the stratum corneum, and allow the stratum corneum to metabolize normally. Furthermore, inhibiting bacterial growth also prevents bacterial metabolites from stimulating sebaceous glands to secrete oil, thus regulating sebaceous gland secretion and achieving a long-lasting oil-control effect. Furthermore, butylene glycol can form a hydrating film on the skin surface, reducing water evaporation, while 1,2-pentanediol can rapidly increase the skin's surface moisture content. The combination of the two can reduce water loss. Decanediol, on the other hand, penetrates into the stratum corneum, helping the skin maintain moisture balance and enhancing the skin barrier's ability to retain water. These three work together from the surface to the interior to rapidly reduce transepidermal water loss. This reduction in transepidermal water loss, combined with the aforementioned oil-controlling effects, ensures the skin's water-oil balance, preventing compensatory secretion of sebaceous glands and forming a virtuous cycle of oil control, moisturizing, barrier repair, and further reduction of sebum secretion, thus enhancing the oil-controlling effect.

[0039] In summary, the cosmetic composition of this embodiment can regulate multiple oil-control-related targets, such as sebaceous gland secretion regulation, stratum corneum metabolism, and skin moisture retention, thereby regulating the dynamic balance between the moisture content of the stratum corneum and sebaceous gland secretion, enhancing the skin barrier function, and thus achieving the purpose of rapid oil control, moisturizing, shrinking pores, and strengthening the skin barrier.

[0040] Furthermore, in the cosmetic composition of this embodiment: The content of North American witch hazel water includes, but is not limited to: 50%, 50.5%, 51%, 51.3%, 51.6%, 52%, 52.7%, 53%, 53.2%, 53.4%, 53.8%, 54%, 54.1%, 54.5%, 55%, 56%, 56.7%, 57%, 57.4%, 57.8%, 58%, 58.5%, 59%, 59.2%, 60%, 60.3%, 61%, 61.6%, 62%, 62.5%, and 63%. 63.3%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 70.6%, 71%, 71.8%, 72%, 72.2%, 73%, 73.5%, 74%, 74.4%, 75%, 75.7%, 76%, 76.5%, 77%, 78%, 78.9%, 79%, 80%, 80.3%, 81%, 81.1%, 81.7%, 82%, 82.8%, 83%, 84%, 84.4%, 85%.

[0041] The content of butanediol includes, but is not limited to: 10%, 10.5%, 11%, 11.3%, 12%, 12.6%, 13%, 13.7%, 14%, 14.3%, 15%, 15.4%, 16%, 16.8%, 17%, 17.9%, 18%, 18.5%, 19%, 19.4%, 20%, 20.1%, 20.7%, 21%, 21.6%, 22%, 22.4%, 23%, 23.5%, 24%, 24.5%, and 25%.

[0042] The content of 1,2-pentanediol includes, but is not limited to: 1%, 1.2%, 1.6%, 2%, 2.5%, 3%, 3.7%, 4%, 4.3%, 4.8%, and 5%.

[0043] The content of decanediol includes, but is not limited to: 0.1%, 0.11%, 0.17%, 0.2%, 0.26%, 0.3%, 0.33%, 0.37%, 0.4%, 0.46%, 0.5%, 0.54%, 0.6%, 0.7%, 0.8%, 0.9%, and 1%.

[0044] Furthermore, the application of the second aspect in this embodiment will be explained.

[0045] This embodiment further proposes the application of the cosmetic composition described in the first aspect in the preparation of skin care products that improve and / or alleviate oily skin.

[0046] The symptoms of oily skin include one or more of the following: excessive sebum secretion, large pores, rough skin, impaired skin barrier function, and acne.

[0047] Based on the description in the first aspect, the cosmetic composition of this embodiment can achieve rapid oil control and moisturizing, and through the effects of rapid oil control and moisturizing, it ensures the skin's water-oil balance, avoids compensatory secretion of sebaceous glands, and forms a virtuous cycle. Simultaneously, it can quickly shrink pores and strengthen the skin barrier. Therefore, the skincare product prepared in this embodiment also possesses the corresponding effects.

[0048] In the skin care product, the content of the cosmetic composition is 0.5-15%, preferably 1-1%, more preferably 3-6%, based on the total weight of the skin care product.

[0049] The skincare products made in this embodiment include, but are not limited to, toners, serums, lotions, creams, or sunscreens, as well as face masks based on water, serums, or lotions.

[0050] It is understood that the skin care products made in this embodiment can be used as cosmetics that quickly control oil, moisturize, shrink pores, and strengthen the skin barrier. They can achieve rapid oil control, and through the effects of rapid oil control and moisturizing, they can ensure the skin's water-oil balance, avoid compensatory secretion of sebaceous glands, and form a virtuous cycle. They can also quickly shrink pores and strengthen the skin barrier.

[0051] Specifically, firstly, butylene glycol and 1,2-pentanediol can promote the rapid penetration of the active ingredients in North American witch hazel water into the deep layers of the skin, accelerating the transdermal penetration rate of the active ingredients. This allows for the achievement of an effective concentration sufficient to trigger astringent and oil-controlling effects within a short time, shortening the onset time of the North American witch hazel water. The accelerated penetration rate of the North American witch hazel water can quickly constrict the sebaceous gland ducts, thereby rapidly reducing the amount of oil excreted to the skin surface, achieving rapid oil control. Furthermore, due to the reduction in surface oil, the skin microenvironment is more conducive to the cross-linking reaction between polyphenolic components such as tannins and the proteins in the stratum corneum. In other words, the rapid oil control effect also increases the reaction rate between the active ingredients in the North American witch hazel water and the proteins in the stratum corneum, thus achieving the goal of rapidly shrinking pores.

[0052] Secondly, as mentioned above, the combination of butylene glycol, 1,2-pentanediol, and witch hazel water can quickly control oil and shrink pores. At the same time, decanediol can inhibit Propionibacterium acnes, and 1,2-pentanediol also has an antibacterial effect. The two work together to inhibit bacterial growth, prevent bacterial damage to the stratum corneum, and allow the stratum corneum to metabolize normally. Furthermore, inhibiting bacterial growth also prevents bacterial metabolites from stimulating sebaceous glands to secrete oil, thus regulating sebaceous gland secretion and achieving a long-lasting oil-control effect. Furthermore, butylene glycol can form a hydrating film on the skin surface, reducing water evaporation, while 1,2-pentanediol can rapidly increase the skin's surface moisture content. The combination of the two can reduce water loss. Decanediol, on the other hand, penetrates into the stratum corneum, helping the skin maintain moisture balance and enhancing the skin barrier's ability to retain water. These three work together from the surface to the interior to rapidly reduce transepidermal water loss. This reduction in transepidermal water loss, combined with the aforementioned oil-controlling effects, ensures the skin's water-oil balance, preventing compensatory secretion of sebaceous glands and forming a virtuous cycle of oil control, moisturizing, barrier repair, and further reduction of sebum secretion, thus enhancing the oil-controlling effect.

[0053] Therefore, the cosmetic composition of this embodiment can regulate multiple oil-control-related targets such as sebaceous gland secretion regulation, stratum corneum metabolism, and skin moisture retention, thereby regulating the dynamic balance between the moisture content of the stratum corneum and sebaceous gland secretion, enhancing the skin barrier function, and thus achieving the purpose of rapid oil control, moisturizing, shrinking pores, and enhancing the skin barrier.

[0054] Furthermore, as one embodiment of this invention, the skincare product prepared from the cosmetic composition of the present invention further includes at least one cosmetic additive.

[0055] It should be understood that the cosmetic composition of this embodiment can be formulated with other components commonly used in the art, i.e., cosmetic additives, added reasonably to the above-described components to create skincare products of corresponding dosage forms. For example, other components commonly used in the art can be reasonably used within a range that does not significantly impair the effects of this embodiment. More specifically, the types and amounts of other components can be adaptively adjusted according to the type of product being manufactured.

[0056] For example, the aforementioned cosmetic additives can be any ingredients known in the art, such as cosmetic excipients, and their type and dosage can be selected according to specific needs.

[0057] In this embodiment, the solvent is known in the art; for example, conventional solvents such as water can be selected.

[0058] For example, in skin care products, the solvent is water, and the water content is the balance, which means that the cosmetic composition components are made up to 100% with water.

[0059] Furthermore, skincare product excipients can be selected from conventional excipients such as solvents, oils, emulsifiers, active ingredients, pH adjusters, thickeners, preservatives, and fragrances.

[0060] For example, the emulsifier includes, but is not limited to, one or more of PEG-40 hydrogenated castor oil, lecithin, sorbitan oleate, and cetearyl oleate.

[0061] pH adjusters include, but are not limited to, one or more of citric acid and arginine.

[0062] For example, the arginine content in the skin care product is 0.05%-0.5% based on the total weight of the skin care product.

[0063] Thickeners or viscosity modifiers include, but are not limited to, one or more of sodium chloride, carbomer, xanthan gum, carboxyethyl cellulose, carboxypropyl methyl cellulose, and sodium acryloyl taurate / VP copolymer.

[0064] For example, in skin care products, the content of sodium chloride is 0.1-1%, based on the total weight of the skin care products.

[0065] Preservatives include, but are not limited to, one or more of ethylhexylglycerin, caprylyl glycol, phenoxyethanol, potassium sorbate, sodium benzoate, and p-hydroxyacetophenone.

[0066] The cosmetic composition of this embodiment can be formulated into conventional dosage forms such as aqueous solutions, serums, lotions, creams, ointments, and masks.

[0067] It is understood that the cosmetic composition of this embodiment can be prepared by any suitable method known in the art. This embodiment will not elaborate on the preparation method.

[0068] The present disclosure is further illustrated below with reference to embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the disclosure.

[0069] Unless otherwise specified, all materials, reagents and instruments used in the following embodiments are commercially available, and all percentages (%) in the following embodiments represent weight percentages.

[0070] Example 1: In this embodiment, essences with the following formulations were prepared, and their specific compositions are shown in Table 1. In Table 1, the cosmetic composition (Symbex Extraprapone) is calculated by weight percentage. ® The composition of Witch Hazel GL is: 79% North American witch hazel water, 17.5% butylene glycol, 3% 1,2-pentanediol, and 0.5% decanediol.

[0071] Table 1: Composition and content (wt.%) of Group A and Group B

[0072] In this embodiment, the active ingredient group (Group A) is the experimental group, and the placebo group (Group B) is the control group.

[0073] The method for preparing the above composition includes: 1. Mix phase A, heat to 80°C, and stir until clear.

[0074] 2. Cool to 25°C, then add phase B to phase A and homogenize.

[0075] 3. Add phase C to phase A and stir until well mixed.

[0076] 4. Use D to adjust the pH to 5.7.

[0077] The essence water is prepared according to the above method. This corresponds to either product group A or product group B. Next, the improvement effects on pore minimizing, oil control, moisturizing, and barrier strengthening effects will be evaluated.

[0078] The pore-shrinking effect is demonstrated by changes in pore density, pore count, pore volume, and pore area before and after product use. Oil control is demonstrated by changes in skin lipid content. Moisturizing effect is demonstrated by changes in skin water content. Barrier strength can be obtained from transepidermal water loss (TEWL) results. A stronger skin barrier means improved skin's water-locking ability, which means a lower transepidermal water loss rate. Therefore, the greater the decrease in TEWL value after product use compared to before use, the greater the improvement in water-locking ability, indicating a stronger skin barrier, equivalent to strengthening the skin barrier.

[0079] Fifteen participants were recruited and randomly assigned to use sample A on one half of their face and sample B on the other half, twice daily. Skin tests were performed before use and on days 7, 14, and 21 of use.

[0080] 1. Test on the efficacy of shrinking pores.

[0081] Before using the essence water (D0), and on days 7 (D7), 14 (D14), and 21 (D21) of using the essence water, images of areas with visible pores on the face were taken using Antera 3D. The Antera Analysis system was used to analyze the images and obtain pore density, pore count, pore volume, and pore area values. The differences between D7 and D0, D14 and D0, and D21 and D0 were calculated respectively. A larger difference (a higher decrease) indicates a better pore-shrinking effect.

[0082] 1.1 Pore density test.

[0083] Figure 1 The test results for pore density are shown. Figure 1 The test results showed that on days 7, 14, and 21 after using the Group A essence water, the pore density was significantly reduced compared to before use, decreasing by 6.73 cm respectively. -2 10.83cm -2 and 16.40cm -2 The reduction rates were -11.28%, -18.16%, and -27.51%, respectively. Meanwhile, after using the essence water containing the cosmetic composition of this embodiment (Group A), both the short-term effect (D7) and long-term effect (D21) were significantly better than those of the placebo group (Group B).

[0084] 1.2 Pore count test.

[0085] Figure 2 The test results for pore count are shown. Figure 2 The test results showed that on days 7, 14, and 21 after using the essence water in group A, the pore count was significantly reduced compared to before use, decreasing by 23.07, 37.13, and 56.20 respectively, with reduction rates of -11.29%, -18.17%, and -27.50%. Furthermore, after using the essence water containing the cosmetic composition of this embodiment (group A), both the short-term effect (D7) and long-term effect (D21) were significantly better than those in the placebo group (group B).

[0086] 1.3 Pore volume test.

[0087] Figure 3 The test results for pore volume are shown. Figure 3 The test results show that on days 7, 14, and 21 after using the Group A essence water, the pore volume was significantly reduced compared to before use, decreasing by 0.00094 mm respectively. 3 0.00113mm 3 and 0.00132mm 3The reduction rates were -29.86%, -35.72%, and -41.90%, respectively. Meanwhile, after using the essence water containing the cosmetic composition of this embodiment (Group A), both the short-term effect (D7) and long-term effect (D21) were significantly better than those of the placebo group (Group B).

[0088] 1.4 Pore area test.

[0089] Figure 4 The test results for pore area are shown, through... Figure 4 The test results show that on days 7, 14, and 21 after using the Group A essence water, the pore area was significantly reduced compared to before use, decreasing by 0.0478mm respectively. 2 0.0567mm 2 and 0.0680mm 2 The reduction rates were -24.06%, -28.55%, and -34.27%, respectively. Meanwhile, after using the essence water containing the cosmetic composition of this embodiment (Group A), both the short-term effect (D7) and long-term effect (D21) were significantly better than those of the placebo group (Group B).

[0090] The tests in sections 1.1-1.4 show that the cosmetic composition of this embodiment can effectively shrink pores within 7 days. This is likely because butylene glycol and 1,2-pentanediol promote the rapid penetration of the active ingredients in the witch hazel water, accelerating the transdermal penetration rate of the active ingredients and reaching the effective concentration that induces the astringent effect in a short time, thus shortening the onset time for shrinking pores. The accelerated penetration rate of the witch hazel water can quickly shrink the sebaceous gland ducts, thereby reducing pore volume. Simultaneously, 1,2-pentanediol rapidly increases the moisture content of the skin surface, making the skin around the pores fuller. Fuller skin compresses the pores, reducing their area. A smaller pore area means a lower pore density per unit area. Furthermore, due to pore shrinkage and reduced pore diameter, some pores cannot be counted, thus lowering the pore count.

[0091] 2. Oil control efficacy test.

[0092] The Sebumeter oil testing probe from CK (Germany) was used to measure and record the skin lipid content in three areas of the forehead. The differences between D7 and D0, D14 and D0, and D21 and D0 were calculated. The larger the difference (the higher the decrease), the better the oil control effect.

[0093] 2.1 Skin lipid content test.

[0094] Figure 5 The results of the skin lipid content test are shown, through... Figure 5The test results showed that on days 7, 14, and 21 after using the Group A essence water, the skin lipid content decreased by -8.60%, -27.72%, and -28.18% compared to before use, respectively. Simultaneously, after using the essence water containing the cosmetic composition of this embodiment (Group A), both the short-term effect (D7) and long-term effect (D21) were significantly better than the placebo group (Group B). This indicates that the cosmetic composition of this embodiment can achieve effective oil control within 7 days. This may be because butylene glycol and 1,2-pentanediol can promote the rapid penetration of the active ingredients in North American witch hazel water into the dermis, accelerating the transdermal penetration rate of the active ingredients, and reaching an effective concentration sufficient to trigger the oil-control effect in a short time, thus shortening the onset time of North American witch hazel water. Furthermore, the accelerated penetration rate of North American witch hazel water can quickly constrict the sebaceous gland ducts, thereby rapidly reducing the excretion of oil to the skin surface, and thus achieving the purpose of rapid oil control. Meanwhile, decanediol can inhibit Propionibacterium acnes, and 1,2-pentanediol can also play an antibacterial role. The two work together to inhibit bacterial growth, prevent bacterial metabolites from stimulating sebaceous glands to secrete oil, regulate sebaceous gland secretion, and achieve a long-lasting oil control effect.

[0095] 3. Moisturizing efficacy test.

[0096] The moisture content of the cheeks was measured using a Corneometer probe from the German company CK. The differences between D7 and D0, D14 and D0, and D21 and D0 were calculated. The larger the difference, the better the moisturizing effect.

[0097] 3.1 Skin moisture content test.

[0098] Figure 6 The results of the skin hydration test are shown. Figure 6 The test results showed that on days 7, 14, and 21 after using the Group A essence water, the water content was significantly increased compared to before use, with increases of 19.16%, 41.82%, and 65.65%, respectively. Furthermore, after using the essence water containing the cosmetic composition of this embodiment (Group A), both the short-term effect (D7) and long-term effect (D21) were significantly better than the placebo group (Group B). This indicates that the cosmetic composition of this embodiment can achieve moisturizing within 7 days. This may be because: butylene glycol forms a hydrating film on the skin surface, reducing water evaporation; simultaneously, 1,2-pentanediol can rapidly increase the surface water content of the skin, and combined with decanediol, it helps the skin maintain moisture balance and increase skin hydration content.

[0099] 4. Barrier strength and toughness test.

[0100] Transepidermal water loss (TEWL) of the cheek was measured using the Tewameter probe from CK GmbH, Germany. The differences between D7 and D0, D14 and D0, and D21 and D0 were calculated. The larger the difference (the higher the decrease), the better the skin barrier strength.

[0101] 4.1 Transdermal water loss test.

[0102] Figure 7 The test results for transdermal water loss rate are shown. Figure 7 The test results showed that on days 7, 14, and 21 after using the essence water in group A, the transepidermal water loss rate was significantly lower than before use, with reduction rates of -12.74%, -18.69%, and -25.69%, respectively. Simultaneously, after using the essence water containing the cosmetic composition of this embodiment (group A), both the short-term effect (D7) and long-term effect (D21) were significantly better than the placebo group (group B). This indicates that using the cosmetic composition of this embodiment can effectively enhance the skin barrier within 7 days. This may be due to: butylene glycol forming a hydration film on the skin surface, reducing water evaporation; and 1,2-pentanediol rapidly increasing the surface moisture content of the skin, combined with decanediol to help the skin maintain moisture balance, enhancing the skin barrier's water-locking ability, and rapidly reducing transepidermal water loss.

[0103] Based on the above test results, the cosmetic composition of this embodiment can achieve rapid oil control and moisturization, and ensure the skin's water-oil balance through rapid oil control and moisturization, avoiding compensatory secretion of sebaceous glands and forming a virtuous cycle; it can also quickly shrink pores and enhance the skin barrier.

[0104] The technical solutions provided by the embodiments of this application have been described in detail above. Specific examples have been used in this document to illustrate the principles and implementation methods of the embodiments of this application. The descriptions of the embodiments above are only for helping to understand the principles of the embodiments of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A cosmetic composition having oil-controlling, pore-minimizing, and moisturizing / repairing functions, characterized in that, The cosmetic composition comprises, by weight percentage: North American witch hazel water: 50-85%; Butylene glycol: 10-25%; 1,2-Pentanediol: 1-5%; Decanediol: 0.1-1%; Based on the total weight of the cosmetic composition.

2. The use of the cosmetic composition according to claim 1 in the preparation of skin care products for improving and / or alleviating oily skin.

3. The application according to claim 2, characterized in that, The content of the cosmetic composition is 0.5-15%, based on the total weight of the skin care product.

4. The application according to claim 3, characterized in that, The content of the cosmetic composition is 1-10%, based on the total weight of the skin care product.

5. The application according to claim 4, characterized in that, The content of the cosmetic composition is 3-6%, based on the total weight of the skin care product.

6. The application according to claims 2-5, characterized in that, The skincare products also include at least one cosmetic additive.

7. The application according to claim 6, characterized in that, The cosmetic additives are selected from one or more of solvents, oils, emulsifiers, thickeners, pH adjusters, preservatives, and fragrances.

8. The application according to claims 2-5, characterized in that, The symptoms of oily skin include one or more of the following: excessive sebum secretion, large pores, rough skin, impaired skin barrier function, and acne.

9. The use of a combination of North American witch hazel water, butylene glycol, 1,2-pentanediol and decanediol in the preparation of cosmetic compositions for improving and / or alleviating oily skin.

10. The application according to claim 9, characterized in that, In the cosmetic composition, the content of North American witch hazel water is 50-85%, the content of butylene glycol is 10-25%, the content of 1,2-pentanediol is 1-5%, and the content of decanediol is 0.1-1%, based on the total weight of the cosmetic composition.

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