Cosmetic composition and preparation method thereof

Abstract

The invention provides a cosmetic composition and a preparation method thereof, and belongs to the technical field of cosmetics. The cosmetic composition is prepared from 2wt%-15wt% of bakuchiol, 0.16 wt%-6wt% of a soothing raw material, 1wt%-30wt% of glycerol and water, wherein the soothing raw material is prepared from at least one of 4-tert-butyl cyclohexanol, an olive leaf extract and a purslane herb extract. The cosmetic composition disclosed by the invention adopts the bakuchiol as a functional component, so that the anti-aging effect of the cosmetic composition is enhanced, at the same time, at least one of the 4-tert-butyl cyclohexanol, the olive leaf extract and the purslane extract is added, so that stabbing caused by high addition amount of the bakuchiol can be relieved, adverse reactions such as red and swollen can be reduced, and the cosmetic composition has a good anti-aging effect. The cosmetic composition provided by the invention has strong anti-aging effect and mildness, has no photosensitivity and can be used in the daytime.

Description

Technical Field

[0001] This application relates to the technical field of cosmetics. Specifically, it relates to a cosmetic composition and a preparation method thereof. Background Art

[0002] In recent years, with the rise of the "ingredient party" and the concept of "no skin care without efficacy", mild and highly effective products have become the mainstream trend. The classic anti-aging ingredient retinol has excellent anti-aging effects and ranks among the top in terms of consumer preference. However, retinol itself has unstable properties and has three drawbacks. First, it has poor stability and is prone to degradation. Second, high content has obvious irritation, easily causing skin intolerance phenomena such as skin redness, dry peeling, stinging, and skin darkening. Third, it has photosensitivity. After being absorbed by the skin under light irradiation, it will be converted into retinoic acid, and retinoic acid has photosensitivity, resulting in adverse reactions on the skin.

[0003] Bakuchiol is a natural ingredient derived from plants and also has an anti-aging effect similar to that of retinol, and is more mild. It is a new type of retinol alternative, commonly known as "plant retinol". It can regulate gene expression in skin cells similar to the effect of retinol, and there is no burning pain, irritation, and redness brought by traditional retinol under the same efficacy ratio. Bakuchiol can not only replace the effect of retinol, but also has better stability than retinol. Although bakuchiol has better adverse reactions than retinol, there are still problems with bakuchiol: high content addition of bakuchiol will cause adverse reactions such as skin burning pain, irritation, and redness. Summary of the Invention

[0004] This application provides a cosmetic composition and a preparation method thereof, which can soothe the irritation caused by high addition amount of bakuchiol and reduce adverse reactions.

[0005] The embodiments of this application are implemented as follows:

[0006] In a first aspect, an embodiment of this application provides a cosmetic composition, which includes: 2wt% - 15wt% bakuchiol, 0.16wt% - 6wt% soothing raw material, 1wt% - 30wt% glycerol and water; wherein, the soothing raw material includes at least one of 4-tert-butylcyclohexanol, olive leaf extract, and purslane extract.

[0007] In the above technical solution, the cosmetic composition of this application uses bakuchiol as a functional ingredient to enhance the anti-aging effect of the cosmetic composition. At the same time, by adding at least one of 4-tert-butylcyclohexanol, olive leaf extract, and purslane extract, it can soothe the stinging caused by high addition amount of bakuchiol and reduce adverse reactions such as redness, making the cosmetic composition of this application have both strong anti-aging effects and mildness, and has no photosensitivity and can be used during the day.

[0008] In some possible embodiments, the proportion of 4-tert-butylcyclohexanol in the cosmetic composition is 0 to 2 wt%, the proportion of olea europaea leaf extract in the cosmetic composition is 0 to 2 wt%, and the proportion of portulaca oleracea extract in the cosmetic composition is 0 to 2 wt%.

[0009] In the above technical solution, the proportion of each soothing raw material in the cosmetic composition does not exceed 2 wt%.

[0010] In some possible embodiments, the soothing raw material is 4-tert-butylcyclohexanol, and the proportion of the soothing raw material in the cosmetic composition is 0.8 wt% to 2 wt%.

[0011] In the above technical solution, when the soothing raw material only includes 4-tert-butylcyclohexanol, the proportion of the soothing raw material in the cosmetic composition is within the above range, which is beneficial to soothe the stinging caused by high addition amount of bakuchiol and reduce adverse reactions such as redness and swelling.

[0012] In some possible embodiments, the cosmetic composition includes 5 wt% to 12 wt% bakuchiol, 1 wt% to 6 wt% soothing raw material, 2 wt% to 15 wt% glycerol and water.

[0013] In some possible embodiments, the cosmetic composition further includes 0 to 5 wt% thickener, 1 wt% to 5 wt% emulsifier, 2 wt% to 30 wt% oil.

[0014] In the above technical solution, the thickener is used to adjust the rheological properties of the cosmetic, improve the stability, enhance the usability, improve the moisturizing effect, adjust the product appearance, and assist the release of active ingredients; the emulsifier is used to stabilize the emulsion system of the cosmetic, improve the texture, enhance the permeability, and adjust the viscosity; the oil is used to improve the moisturizing degree of the cosmetic, improve the skin feel, enhance the stability, and carry active ingredients.

[0015] In some possible embodiments, the thickener includes at least one of sodium acryloyldimethyltaurate, sodium polyacryloyldimethyltaurate, acryloyldimethyltauramide / behenyl alcohol polyether-25 methacrylate cross-linked polymer, and polyacrylate cross-linked polymer-6; the emulsifier includes at least one of glyceryl stearate, PEG-100 stearate, PEG-20 methyl glucose sesquistearate, and sucrose stearate; the oil includes at least one of caprylic / capric triglyceride, squalane, shea butter, polydimethylsiloxane, and triethylhexanoin.

[0016] In some possible embodiments, the cosmetic composition further includes 0 to 8 wt% humectant and 0.1 wt% to 2 wt% preservative.

[0017] In the above technical solution, the humectant is used to lock in moisture, enhance the skin barrier function, improve the skin texture, and enhance the product feel; the preservative is used to prevent microbial contamination and extend the shelf life.

[0018] In some possible embodiments, the humectant includes at least one of 1,2-pentanediol, glycerin, butanediol, rhamnose, and diglycerol; the preservative includes at least one of sorbitan octanoate, octanoyl hydroxamic acid, phenoxyethanol, and glyceryl caprylate.

[0019] In a second aspect, the present application provides a method for preparing the above cosmetic composition. The soothing raw material includes 4-tert-butylcyclohexanol. The preparation method includes: mixing and homogenizing a first mixture and a second mixture, obtaining a third mixture after completing the mixing and homogenizing, and mixing and stirring the third mixture and a fourth mixture evenly to obtain the cosmetic composition; wherein, the first mixture includes a thickener, glycerin, and water, the second mixture includes an oil, an emulsifier, bakuchiol, and at least part of the soothing raw material, and the second mixture includes all of the 4-tert-butylcyclohexanol, and the fourth mixture includes a humectant, a preservative, and the remaining soothing raw material.

[0020] In the above technical solution, when the soothing raw material includes 4-tert-butylcyclohexanol, the preparation method of the cosmetic composition of the present application can obtain a cosmetic composition with uniform texture, good skin feel, no irritation to the skin, and having anti-aging effects.

[0021] In a third aspect, the present application provides a method for preparing a cosmetic composition. The soothing raw material includes olea europaea leaf extract and / or portulaca oleracea extract. The preparation method includes: mixing and homogenizing a first mixture and a second mixture, obtaining a third mixture after completing the mixing and homogenizing, and mixing and stirring the third mixture and a fourth mixture evenly to obtain the cosmetic composition; wherein, the first mixture includes a thickener, glycerin, and water, the fourth mixture includes a humectant, a preservative, and at least part of the soothing raw material, and the fourth mixture includes all of the olea europaea leaf extract and / or portulaca oleracea extract, and the second mixture includes an oil, an emulsifier, bakuchiol, and the remaining soothing raw material.

[0022] In the above technical solution, when the soothing raw material includes olea europaea leaf extract and / or portulaca oleracea extract, the preparation method of the cosmetic composition of the present application can obtain a cosmetic composition with uniform texture, good skin feel, no irritation to the skin, and having anti-aging effects. Detailed Description

[0023] The implementation solutions of the present application will be described in detail below in conjunction with embodiments. However, those skilled in the art will understand that the following embodiments are only used to illustrate the present application and should not be regarded as limiting the scope of the present application. For those conditions not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. For the reagents or instruments whose manufacturers are not specified, they are all conventional products that can be obtained through commercial purchase.

[0024] The following specifically describes a cosmetic composition and its preparation method according to an embodiment of the present application:

[0025] The present application provides a cosmetic composition, which includes: 2 wt% to 15 wt% of bakuchiol, 0.16 wt% to 6 wt% of soothing raw materials, 1 wt% to 30 wt% of glycerol and water.

[0026] Among them, bakuchiol is a natural plant extract, mainly derived from the seeds and leaves of the Psoralea corylifolia plant, and its molecular formula is C 18 H 24 O, and its chemical name is 4-[(1E,3S)-3-ethenyl-3,7-dimethyl-1,6-octadienyl]phenol. It has a significant anti-aging effect and good light stability, and can be used during the day.

[0027] The soothing raw materials include at least one of 4-tert-butylcyclohexanol, olea europaea leaf extract, and portulaca oleracea extract.

[0028] 4-tert-butylcyclohexanol inhibits the over-activation of TRPV1 receptors and regulates the nerve sensory chain reaction that causes stinging and burning sensations, aiming to reset the balance of the skin and increase the skin's tolerance threshold to the environment. The burning and stinging sensations are sensations caused by the overexpression of the heat receptor TRPV1 (transient receptor potential vanilloid 1). The burning and stinging sensations are sensations caused by the overexpression of the heat receptor TRPV1 (transient receptor potential vanilloid 1).

[0029] The olea europaea leaf extract is rich in polyphenols, such as oleuropein and hydroxytyrosol, which can neutralize free radicals, reduce oxidative stress, and thus relieve inflammation. It inhibits the production of pro-inflammatory cytokines (such as TNF-α, IL-6), and inhibits the activities of enzymes such as COX-2 and 5-LOX, reduces the generation of inflammatory mediators such as prostaglandins and leukotrienes, regulates the functions of immune cells such as macrophages and T cells, reduces the excessive immune response, and alleviates the inflammatory response.

[0030] The extract of Portulaca oleracea contains alkaloids, terpenoids, coumarins, flavonoids, polysaccharides, volatile oils and other components, and has the effects of anti - inflammation, anti - bacteria, anti - oxidation and improving immunity; Portulaca oleracea has a wide range of applications in the external skin, and has a good adjuvant therapeutic effect in skin inflammation, acne care and delaying the recurrence of eczema; After the extraction of Portulaca oleracea by microbial fermentation, some active substances will increase. Especially, the polyphenol content in the Portulaca oleracea juice fermented by lactic acid bacteria increases significantly, and the total antioxidant capacity is significantly enhanced.

[0031] As an example, the mass percentage of bakuchiol in the cosmetic composition can be 2wt%, 5wt%, 8wt%, 10wt% or 15wt%; the mass percentage of the soothing raw material in the cosmetic composition can be 0.16wt%, 0.5wt%, 0.8wt%, 1wt%, 2wt%, 3wt%, 4wt%, 5wt% or 6wt%; the mass percentage of glycerol in the cosmetic composition can be 1wt%, 5wt%, 10wt%, 15wt%, 20wt%, 25wt% or 30wt%.

[0032] Optionally, the proportion of each soothing raw material in the cosmetic composition does not exceed 2wt%, that is, the proportion of 4 - tert - butylcyclohexanol in the cosmetic composition is 0 - 2wt%, the proportion of olive leaf extract in the cosmetic composition is 0 - 2wt%, and the proportion of Portulaca oleracea extract in the cosmetic composition is 0 - 2wt%.

[0033] Particularly, when the soothing raw material only includes 4 - tert - butylcyclohexanol, the proportion of the soothing raw material in the cosmetic composition is 0.8wt% - 2wt%.

[0034] Optionally, the cosmetic composition includes: 5wt% - 12wt% bakuchiol, 1wt% - 6wt% soothing raw material, 2wt% - 15wt% glycerol and water.

[0035] The cosmetic composition also includes 0 - 5wt% thickener, 1wt% - 5wt% emulsifier, 2wt% - 30wt% oil.

[0036] Among them, the thickener is used to adjust the rheological properties of the cosmetic, improve stability, enhance the sense of use, enhance the moisturizing effect, adjust the product appearance, and assist the release of active ingredients; the emulsifier is used to stabilize the emulsion system of the cosmetic, improve the texture, enhance permeability, and adjust viscosity; the oil is used to improve the moisturizing degree of the cosmetic, improve the skin feel, enhance stability, and carry active ingredients.

[0037] The thickener includes at least one of sodium acryloyldimethyltaurate, sodium polyacryloyldimethyltaurate, ammonium acryloyldimethyltaurate / behenyl alcohol polyether-25 methacrylate crosspolymer, and polyacrylate crosspolymer-6; the emulsifier includes at least one of glyceryl stearate, PEG-100 stearate, PEG-20 methyl glucose sesquistearate, and sucrose stearate; the oil includes at least one of triglyceride caprylic / capric acid, squalane, shea butter, polydimethylsiloxane, and triethylhexanoin.

[0038] Optionally, the cosmetic composition further includes 0.1 wt% - 2 wt% of the thickener, 1 wt% - 3 wt% of the emulsifier, and 2 wt% - 15 wt% of the oil.

[0039] The cosmetic composition further includes 0 - 8 wt% of a humectant and 0.1 wt% - 2 wt% of a preservative.

[0040] Among them, the humectant is used to lock in moisture, enhance the skin barrier function, improve skin texture, and enhance the product feel; the preservative is used to prevent microbial contamination and extend the shelf life.

[0041] The humectant includes at least one of 1,2-pentanediol, glycerin, butanediol, rhamnose, and diglycerin; the preservative includes at least one of sorbitan octanoate, octanoyl hydroxamic acid, phenoxyethanol, and glyceryl caprylate.

[0042] Optionally, the cosmetic composition further includes 0.1 wt% - 5 wt% of the humectant and 0.5 wt% - 2 wt% of the preservative.

[0043] The cosmetic composition of the present application uses bakuchiol as a functional ingredient to enhance the anti-aging effect of the cosmetic composition. At the same time, by adding at least one of 4-tert-butylcyclohexanol, olive leaf extract, and purslane extract, the stinging caused by a high addition amount of bakuchiol can be soothed, and adverse reactions such as redness and swelling can be reduced, making the cosmetic composition of the present application have both strong anti-aging effects and mildness, and being non-photosensitive and can be used during the day.

[0044] The present application also provides a preparation method of the above cosmetic composition, which includes the following steps:

[0045] S1. Prepare a third mixture

[0046] Mix and homogenize the first mixture and the second mixture, and a third mixture is obtained after completing the mixing and homogenization.

[0047] The mixing and homogenization includes stirring at a speed of 6000 rpm - 8000 rpm for 5 min - 10 min.

[0048] Among them, the first mixture is prepared by the following method:

[0049] Mix the thickener, glycerin and water, and heat to 80°C to 88°C. Keep stirring at this temperature for 3 min to 10 min to obtain the first mixture.

[0050] The second mixture is prepared by the following method:

[0051] When the soothing raw material includes 4-tert-butylcyclohexanol, mix the oil, emulsifier, bakuchiol and 4-tert-butylcyclohexanol, and heat to 80°C to 88°C. Stir at this temperature until dissolved and become transparent to obtain the second mixture.

[0052] When the soothing raw material does not include 4-tert-butylcyclohexanol, mix the oil, emulsifier and bakuchiol, and heat to 80°C to 88°C. Stir at this temperature until dissolved and become transparent to obtain the second mixture.

[0053] S2. Prepare the cosmetic composition

[0054] After the prepared third mixture is cooled to 40°C to 50°C, mix the prepared third mixture and the fourth mixture, and stir evenly to obtain the cosmetic composition.

[0055] Among them, the fourth mixture is prepared by the following method:

[0056] When the soothing raw material includes olea europaea leaf extract and / or portulaca oleracea extract, mix the moisturizer, preservative, olea europaea leaf extract and / or portulaca oleracea extract evenly to obtain the fourth mixture.

[0057] When the soothing raw material does not include olea europaea leaf extract and / or portulaca oleracea extract, mix the moisturizer and the preservative evenly to obtain the fourth mixture.

[0058] It should be noted that when the soothing raw material only includes 4-tert-butylcyclohexanol, the soothing raw material is added to the cosmetic composition through the second mixture; when the soothing raw material only includes olea europaea leaf extract and / or portulaca oleracea extract, the soothing raw material is added to the cosmetic composition through the fourth mixture; when the soothing raw material includes both 4-tert-butylcyclohexanol and olea europaea leaf extract and / or portulaca oleracea extract, the soothing raw material is added to the cosmetic composition through the second mixture and the fourth mixture.

[0059] The preparation method of the cosmetic composition of the present application can obtain a cosmetic composition with uniform texture, good skin feel, no irritation to the skin and having anti-aging effects.

[0060] The following further describes in detail a cosmetic composition and its preparation method of the present application in conjunction with embodiments.

[0061] Example 1

[0062] The embodiments of the present application provide a cosmetic composition and a preparation method thereof, and the formula list is shown in Table 1 as follows:

[0063] Table 1 Formula list of Example 1

[0064]

[0065] The preparation method of the cosmetic composition is as follows:

[0066] First, weigh each raw material in A in Table 1, mix them and heat to 85°C, keep stirring at this temperature for 3 minutes to obtain the first mixture; and weigh each raw material in B in Table 1, heat to 85°C, stir at this temperature until dissolved into a transparent state to obtain the second mixture; then add the second mixture to the first mixture, stir at a rotation speed of 6000 rpm for 5 minutes, after completion of stirring, cool down to 45°C to obtain the third mixture. At the same time, weigh each raw material in C in Table 1, mix them evenly to obtain the fourth mixture, add the fourth mixture to the third mixture, and stir evenly to obtain the cosmetic composition.

[0067] Example 2

[0068] The embodiments of the present application provide a cosmetic composition and a preparation method thereof, and the formula list is shown in Table 2 as follows:

[0069] Table 2 Formula list of Example 2

[0070]

[0071] The preparation method of the cosmetic composition is as follows:

[0072] First, weigh each raw material in A in Table 2, mix them and heat to 85°C, keep stirring at this temperature for 3 minutes to obtain the first mixture; and weigh each raw material in B in Table 2, heat to 85°C, stir at this temperature until dissolved into a transparent state to obtain the second mixture; then add the second mixture to the first mixture, stir at a rotation speed of 6000 rpm for 5 minutes, after completion of stirring, cool down to 45°C to obtain the third mixture. At the same time, weigh each raw material in C in Table 2, mix them evenly to obtain the fourth mixture, add the fourth mixture to the third mixture, and stir evenly to obtain the cosmetic composition.

[0073] Example 3

[0074] The embodiments of the present application provide a cosmetic composition and a preparation method thereof, and the formula list is shown in Table 3 as follows:

[0075] Table 3 Formula list of Example 3

[0076]

[0077] The preparation method of the cosmetic composition is as follows:

[0078] First, weigh each raw material in A in Table 3, mix them and heat to 85°C, keep stirring at this temperature for 3 minutes to obtain the first mixture; and weigh each raw material in B in Table 3, heat to 85°C, stir until dissolved into a transparent state at this temperature to obtain the second mixture; then add the second mixture to the first mixture, stir at a speed of 6000 rpm for 5 minutes, after completion of stirring, cool down to 45°C to obtain the third mixture, at the same time, weigh each raw material in C in Table 3, mix them evenly to obtain the fourth mixture, add the fourth mixture to the third mixture, and stir evenly to obtain the cosmetic composition.

[0079] Example 4

[0080] The embodiment of the present application provides a cosmetic composition and its preparation method, and its formula table is shown in Table 4:

[0081] Table 4 Formula Table of Example 4

[0082]

[0083] The preparation method of the cosmetic composition is as follows:

[0084] First, weigh each raw material in A in Table 4, mix them and heat to 85°C, keep stirring at this temperature for 3 minutes to obtain the first mixture; and weigh each raw material in B in Table 4, heat to 85°C, stir until dissolved into a transparent state at this temperature to obtain the second mixture; then add the second mixture to the first mixture, stir at a speed of 6000 rpm for 5 minutes, after completion of stirring, cool down to 45°C to obtain the third mixture, at the same time, weigh each raw material in C in Table 4, mix them evenly to obtain the fourth mixture, add the fourth mixture to the third mixture, and stir evenly to obtain the cosmetic composition.

[0085] Example 5

[0086] The embodiment of the present application provides a cosmetic composition and its preparation method, and its formula table is shown in Table 5:

[0087] Table 5 Formula Table of Example 5

[0088]

[0089] The preparation method of the cosmetic composition is as follows:

[0090] First, weigh each raw material in A in Table 5, mix them and heat to 85°C. Keep stirring at this temperature for 3 minutes to obtain the first mixture; and weigh each raw material in B in Table 5, heat to 85°C, and stir until dissolved to become transparent to obtain the second mixture; then add the second mixture to the first mixture, stir at a speed of 6000 rpm for 5 minutes, and after completion of stirring, cool down to 45°C to obtain the third mixture. At the same time, weigh each raw material in C in Table 5, mix them evenly to obtain the fourth mixture, and add the fourth mixture to the third mixture, stir evenly to obtain the cosmetic composition.

[0091] Example 6

[0092] An embodiment of the present application provides a cosmetic composition and a preparation method thereof, and its formulation table is shown in Table 6:

[0093] Formulation table of Example 6 in Table 6

[0094]

[0095]

[0096] The preparation method of the cosmetic composition is as follows:

[0097] First, weigh each raw material in A in Table 6, mix them and heat to 85°C. Keep stirring at this temperature for 3 minutes to obtain the first mixture; and weigh each raw material in B in Table 6, heat to 85°C, and stir until dissolved to become transparent to obtain the second mixture; then add the second mixture to the first mixture, stir at a speed of 6000 rpm for 5 minutes, and after completion of stirring, cool down to 45°C to obtain the third mixture. At the same time, weigh each raw material in C in Table 6, mix them evenly to obtain the fourth mixture, and add the fourth mixture to the third mixture, stir evenly to obtain the cosmetic composition.

[0098] Comparative Example 1

[0099] The comparative example of the present application provides a cosmetic composition and a preparation method thereof, and its formulation table is shown in Table 7:

[0100] Formulation table of Comparative Example 1 in Table 7

[0101]

[0102]

[0103] The preparation method of the cosmetic composition is as follows:

[0104] First, weigh each raw material in A in Table 7, mix them and heat to 85°C. Keep stirring at this temperature for 3 minutes to obtain the first mixture; and weigh each raw material in B in Table 7, heat to 85°C, and stir until dissolved into a transparent state to obtain the second mixture; then add the second mixture to the first mixture, stir at a speed of 6000 rpm for 5 minutes, and after completion of stirring, cool down to 45°C to obtain the third mixture. At the same time, weigh each raw material in C in Table 7, mix them evenly to obtain the fourth mixture, and add the fourth mixture to the third mixture, stir evenly to obtain the cosmetic composition.

[0105] Comparative Example 2

[0106] The comparative example of this application provides a cosmetic composition and its preparation method, and its formulation table is shown in Table 8:

[0107] Formulation Table of Comparative Example 2

[0108]

[0109]

[0110] The preparation method of the cosmetic composition is as follows:

[0111] First, weigh each raw material in A in Table 8, mix them and heat to 85°C. Keep stirring at this temperature for 3 minutes to obtain the first mixture; and weigh each raw material in B in Table 8, heat to 85°C, and stir until dissolved into a transparent state to obtain the second mixture; then add the second mixture to the first mixture, stir at a speed of 6000 rpm for 5 minutes, and after completion of stirring, cool down to 45°C to obtain the third mixture. At the same time, weigh each raw material in C in Table 8, mix them evenly to obtain the fourth mixture, and add the fourth mixture to the third mixture, stir evenly to obtain the cosmetic composition.

[0112] Comparative Example 3

[0113] The comparative example of this application provides a cosmetic composition and its preparation method, and its formulation table is shown in Table 9:

[0114] Formulation Table of Comparative Example 3

[0115]

[0116]

[0117] The preparation method of the cosmetic composition is as follows:

[0118] First, weigh each raw material in A in Table 9, mix them, and heat to 85°C. Keep stirring at this temperature for 3 minutes to obtain the first mixture; and weigh each raw material in B in Table 9, heat to 85°C, and stir at this temperature until it dissolves and becomes transparent to obtain the second mixture; then add the second mixture to the first mixture, stir at a speed of 6000 rpm for 5 minutes, and after the stirring is completed, cool down to 45°C to obtain the third mixture. At the same time, weigh each raw material in C in Table 9, mix them evenly to obtain the fourth mixture, and add the fourth mixture to the third mixture, stir evenly to obtain the cosmetic composition.

[0119] Comparative Example 4

[0120] The comparative example of this application provides a cosmetic composition and its preparation method, and its formulation table is shown in Table 10:

[0121] Formulation table of Comparative Example 4 in Table 10

[0122]

[0123] The preparation method of the cosmetic composition is as follows:

[0124] First, weigh each raw material in A in Table 10, mix them, and heat to 85°C. Keep stirring at this temperature for 3 minutes to obtain the first mixture; and weigh each raw material in B in Table 10, heat to 85°C, and stir at this temperature until it dissolves and becomes transparent to obtain the second mixture; then add the second mixture to the first mixture, stir at a speed of 6000 rpm for 5 minutes, and after the stirring is completed, cool down to 45°C to obtain the third mixture. At the same time, weigh each raw material in C in Table 10, mix them evenly to obtain the fourth mixture, and add the fourth mixture to the third mixture, stir evenly to obtain the cosmetic composition.

[0125] Comparative Example 5

[0126] The comparative example of this application provides a cosmetic composition and its preparation method, and its formulation table is shown in Table 11:

[0127] Formulation table of Comparative Example 5 in Table 11

[0128]

[0129] The preparation method of the cosmetic composition is as follows:

[0130] First, weigh each raw material in A in Table 11, mix them and heat to 85°C. Keep stirring at this temperature for 3 minutes to obtain the first mixture; and weigh each raw material in B in Table 11 and heat to 85°C. Stir at this temperature until it dissolves into a clear solution to obtain the second mixture; then add the second mixture to the first mixture and stir at a speed of 6000 rpm for 5 minutes. After completion of stirring, cool down to 45°C to obtain the third mixture. At the same time, weigh each raw material in C in Table 11, mix them evenly to obtain the fourth mixture, and add the fourth mixture to the third mixture and stir evenly to obtain the cosmetic composition.

[0131] Test Example 1

[0132] Take the cosmetic compositions prepared in Examples 1-6 and Comparative Examples 1-5 for stability testing, and the results are shown in Table 12.

[0133] The method for stability testing is as follows:

[0134] Place the cosmetic compositions prepared in Examples 1-6 and Comparative Examples 1-5 in three different conditions: 25°C (room temperature), 55°C oven, and light (25°C) oven for three months. Take them out and compare the changes in color and appearance, and measure the content of the active components (bakuchiol / retinol) in the formulation by high performance liquid chromatography. If the measured content ≥ 97% of the original added amount, it is considered stable (excluding measurement errors).

[0135] Table 12 Stability test results of Examples 1-6 and Comparative Examples 1-5

[0136] Project At room temperature for 3 months Insulated at 55°C Under light conditions Example 1 Stable Stable Slightly light yellow Example 2 Stable Stable Slightly light yellow Example 3 Stable Stable Slightly light yellow Example 4 Stable Stable Slightly light yellow Example 5 Stable Stable Slightly light yellow Example 6 Stable Stable Slightly light yellow Comparative Example 1 Stable Stable Slightly light yellow Comparative Example 2 Stable Stable Slightly light yellow Comparative Example 3 Stable Stable Slightly light yellow Comparative Example 4 Stable Stable Slightly light yellow Comparative Example 5 Unstable Unstable Yellow

[0137] It can be seen from Examples 1-6 and Comparative Examples 1-4 that using bakuchiol instead of retinol has an anti-aging effect, and the cosmetic compositions of Examples 1-6 and Comparative Examples 1-4 have good stability.

[0138] Comparative Example 5 uses retinol to have an anti-aging effect, and the cosmetic composition of Comparative Example 5 has poor stability.

[0139] Test Example 2

[0140] Take the cosmetic compositions prepared in Examples 1-6 and Comparative Examples 1-5 for irritation, wrinkle and pigment deposition testing, and the results are shown in Table 13.

[0141] The test method is as follows:

[0142] Irritation: Select qualified patch test equipment. Using the closed patch test method, place 0.020 ml - 0.025 ml of the test substance in the patch test device, and apply a low-allergenic tape to the flexor side of the subject's forearm. After 24 hours, remove the test substance. Observe the skin reaction at 0.5, 24, and 48 hours after removal. Record the results according to the skin reaction grading standard in the "Technical Specifications for Cosmetics Safety" (2015 Edition), and there is no irritation.

[0143] Wrinkles and pigmentation: Use a VISIA skin detector (consisting of a facial imaging chamber adjacent to a computer and quantitative analysis software), which is composed of an ultra-high-definition camera. Scan the superficial and deep layers of the skin under three shooting light sources: white light, ultraviolet light, and polarized light. Combine with the database for quantitative analysis to obtain relevant data on skin wrinkles and pigmentation.

[0144] Table 13 Human test results of Examples 1 - 6 and Comparative Examples 1 - 5

[0145]

[0146]

[0147] As can be seen from Examples 1 - 6, when using bakuchiol as the anti-aging active ingredient and simultaneously selecting at least one of 4-tert-butylcyclohexanol, olive leaf extract, and purslane extract as a soothing raw material to be used in combination with bakuchiol, it can soothe the stinging caused by a high addition amount of bakuchiol and reduce adverse reactions such as redness and swelling, making the cosmetic composition of the present application have both strong anti-aging efficacy and mildness.

[0148] As can be seen from Comparative Examples 1 - 4, when using bakuchiol alone, or using bisabolol, Lactobacillus / Soybean Ferment Filtrate, or Biosaccharide Gum - 4 in combination with bakuchiol, it cannot soothe the irritation caused by a high addition amount of bakuchiol.

[0149] As can be seen from Comparative Example 5, when using retinol as the anti-aging active ingredient alone, the cosmetic composition has very severe irritation.

[0150] The above are only specific embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cosmetic composition, characterized in that, The cosmetic composition comprises: 2 wt% to 15 wt% of bakuchiol, 0.16 wt% to 6 wt% of a soothing raw material, 1 wt% to 30 wt% of glycerol and water; Wherein, the soothing raw material comprises at least one of 4-tert-butylcyclohexanol, olea europaea leaf extract and portulaca oleracea extract.

2. The cosmetic composition according to claim 1, characterized in that, The proportion of 4-tert-butylcyclohexanol in the cosmetic composition is 0 to 2 wt%, the proportion of olea europaea leaf extract in the cosmetic composition is 0 to 2 wt%, and the proportion of portulaca oleracea extract in the cosmetic composition is 0 to 2 wt%.

3. The cosmetic composition according to claim 1, characterized in that, The soothing raw material is 4-tert-butylcyclohexanol, and the proportion of the soothing raw material in the cosmetic composition is 0.8 wt% to 2 wt%.

4. The cosmetic composition according to claim 1, characterized in that, The cosmetic composition comprises 5 wt% to 12 wt% of bakuchiol, 1 wt% to 6 wt% of a soothing raw material, 2 wt% to 15 wt% of glycerol and water.

5. The cosmetic composition according to claim 1, characterized in that, The cosmetic composition further comprises 0 to 5 wt% of a thickener, 1 wt% to 5 wt% of an emulsifier, and 2 wt% to 30 wt% of an oil.

6. The cosmetic composition according to claim 5, characterized in that, The thickener comprises at least one of sodium acryloyldimethyltaurate, sodium polyacryloyldimethyltaurate, acryloyldimethyltauramide / sorbitan tristearate crosspolymer and polyacrylate crosspolymer-6; The emulsifier comprises at least one of glyceryl stearate, PEG-100 stearate, PEG-20 methyl glucose sesquistearate and sucrose stearate; The oil comprises at least one of caprylic / capric triglyceride, squalane, shea butter, polydimethylsiloxane, and triglyceride (ethylhexanoic acid).

7. The cosmetic composition according to claim 1, characterized in that, The cosmetic composition further comprises 0 to 8 wt% of a humectant and 0.1 wt% to 2 wt% of a preservative.

8. The cosmetic composition according to claim 7, characterized in that, The humectant comprises at least one of 1,2-pentanediol, glycerol, butanediol, rhamnose and diglycerol; The preservative comprises at least one of sorbitan octanoate, octanoyl hydroxamic acid, phenoxyethanol and glyceryl caprylate.

9. A method for preparing the cosmetic composition according to any one of claims 1 to 8, characterized in that, The soothing raw material comprises the 4-tert-butylcyclohexanol, and the preparation method of the cosmetic composition comprises: mixing and homogenizing a first mixture and a second mixture, obtaining a third mixture after completing the mixing and homogenizing, and mixing and stirring the third mixture and a fourth mixture evenly to prepare the cosmetic composition; Wherein, the first mixture comprises a thickener, the glycerol and the water, the second mixture comprises an oil, an emulsifier, the bakuchiol and at least part of the soothing raw material, and the second mixture comprises all of the 4-tert-butylcyclohexanol, and the fourth mixture comprises a humectant, a preservative and the remaining soothing raw material.

10. A method for preparing the cosmetic composition according to any one of claims 1 to 8, characterized in that, The soothing raw material comprises the olea europaea leaf extract and / or the portulaca oleracea extract, and the preparation method of the cosmetic composition comprises: mixing and homogenizing a first mixture and a second mixture, obtaining a third mixture after completing the mixing and homogenizing, and mixing and stirring the third mixture and a fourth mixture evenly to prepare the cosmetic composition; Among them, the first mixture includes a thickening agent, the glycerol, and the water, the fourth mixture includes a humectant, a preservative, and at least part of the soothing raw material, and the fourth mixture includes all of the olea europaea leaf extract and / or the portulaca oleracea extract, and the second mixture includes an oil, an emulsifier, the bakuchiol, and the remaining soothing raw material.

Images