Multifunctional refreshing skin cream with concealing, sunscreen and whitening functions and preparation method of multifunctional refreshing skin cream

Abstract

The invention relates to a multifunctional refreshing skin cream with concealing, sunscreen and whitening functions and a preparation method of the multifunctional refreshing skin cream, the multifunctional refreshing skin cream comprises an emulsifier, a sunscreen agent, grease, polyhydric alcohols, a whitening active matter, a concealing agent, a skin conditioner, a film-forming agent, a thickening agent, a preservative and water, titanium dioxide of different specifications is selected as the concealing agent and the sunscreen agent respectively; the skin cream has the effects of concealing, sunscreen and whitening by compounding other organic sunscreen agents, optimizing active matter components and introducing components with the whitening effect, and has the effects of concealing, sunscreen and whitening by selecting proper emulsifier, grease, polyhydric alcohol, skin conditioner, film-forming agent and thickening agent and optimizing the component content, so that the skin cream has the effects of concealing, sunscreen and whitening. Therefore, the system is good in stability, non-greasy to skin, fresh and cool, excellent in makeup keeping effect and good in market prospect.

Description

Technical Field

[0001] The invention belongs to the field of cosmetics, and particularly relates to a multifunctional refreshing skin care cream with the functions of concealing blemishes, sun protection and whitening, and a preparation method thereof. Background Art

[0002] At present, sunscreen products are becoming more and more daily necessities, and users have higher and higher requirements for sunscreen products. They should not only have basic sunscreen effects, but also take into account skin beauty and skin care effects. Many sunscreen products have problems such as heavy skin feeling, closed and airtight, greasy application, etc., and have single functions. After using sunscreen, you need to touch up your face and put on makeup again, which increases the burden on the skin and easily causes skin problems such as allergies. At the same time, as the concept of streamlined skin care is becoming more and more popular among consumers, multifunctional skin care creams have good development prospects. Summary of the invention

[0003] In view of the above-mentioned current technical deficiencies, a refreshing skin care cream with good stability, non-greasy skin-fitting, refreshing and excellent long-lasting makeup effect and multifunctional functions of concealing blemishes, sun protection and whitening and a preparation method thereof are provided through a specific formula ingredient combination.

[0004] The first aspect of the present invention provides a multifunctional refreshing skin care cream with concealing, sunscreening and whitening effects, comprising the following components: an emulsifier, a sunscreen, oil, a polyol, a whitening active substance, a concealer, a skin conditioning agent, a film former, a thickener, a preservative, and water; the emulsifier is C14-22 alcohol (and) C12-20 alkyl glucoside, polyglyceryl-6 stearate (and) polyglyceryl-6 behenate, glyceryl stearate (and) PEG-100 The sunscreen agent is composed of two or more of stearic acid esters; the sunscreen agent is composed of inorganic sunscreen agents and organic sunscreen agents, and the inorganic sunscreen agent is nano titanium dioxide particles; the organic sunscreen agent is five or more of ethylhexyl salicylate, isopentyl p-methoxycinnamate, homosalate, ethylhexyl methoxycinnamate, diethylamino hydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, and ethylhexyl triazone; the oil contains dibutyl adipate and is composed of three or more components, and the remaining components are selected from butyl octanol salicylate, polydimethylsiloxane, and C15-19 alkane; the polyol is dipropylene glycol, at least one of glycerol; the whitening active substance consists of combination I and combination II, wherein combination I consists of lemon extract, lemon fruit extract, and lemon seed oil; combination II contains niacinamide and consists of three or more components, and the remaining components are selected from tocopherol, bisabolol, and dipotassium glycyrrhizinate; the concealer is non-nano titanium dioxide particles; the skin conditioning agent is at least one of boron nitride, polymethylsilsesquioxane, HDI / trimethylol hexyllactone cross-linked polymer, and silica; the film-forming agent is VP / eicosene copolymer; the thickener is at least one of sodium acrylic acid (ester) copolymer and xanthan gum.

[0005] Among them, lemon extract, lemon fruit extract and lemon seed oil come from lemon fruit, lemon pulp and lemon seeds respectively. Lemon extract mainly contains vitamin C, citric acid, hesperidin, flavonoids, polyphenols, terpenes, limonoids and polysaccharides; lemon fruit extract mainly contains citric acid, vitamin C and polysaccharides; lemon seed oil mainly contains limonoids.

[0006] Furthermore, the following components are included according to weight percentage: emulsifier 3.5-4.5%, sunscreen 16-22%, oil 4.0-7.0%, polyol 4-6%, whitening active ingredient 4-8%, concealer 1.5-2.5%, skin conditioner 1.0-2.0%, film former 0.5-1%, thickener 0.2-0.5%, preservative 1.0-2.0%, water 50%-60%.

[0007] Furthermore, the multifunctional refreshing skin cream contains 15.5-21% of organic sunscreen and 0.5-1.0% of inorganic sunscreen.

[0008] Furthermore, the multifunctional refreshing skin care cream contains 13-17% liquid organic sunscreen and 3-5% solid organic sunscreen, the liquid organic sunscreen is two or more of ethylhexyl salicylate, isoamyl p-methoxycinnamate, homosalate, and ethylhexyl methoxycinnamate, and the solid organic sunscreen is diethylaminohydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, and ethylhexyl triazone.

[0009] Furthermore, the multifunctional refreshing skin care cream contains 1-2% dibutyl adipate.

[0010] Furthermore, the multifunctional refreshing skin care cream contains 2.5%-5% of combination I and 2%-3% of combination II.

[0011] Furthermore, the combination I contains 2-4% lemon extract.

[0012] Furthermore, the combination II contains 1.5-2.5% niacinamide.

[0013] Furthermore, the preservative is at least two of 1,2-hexanediol, 1,2-pentanediol, and p-hydroxyacetophenone.

[0014] The present invention also provides a method for preparing the multifunctional refreshing skin cream, comprising the steps of: S1 Preparation of oil phase: Add concealer and inorganic sunscreen to part of the oil, grind with a three-roll mill for 2-3 times until uniform, then add organic sunscreen and remaining oil, mix evenly, the temperature of the mixed liquid is 85±5℃, stir to fully dissolve the materials, then add skin conditioner, film former, emulsifier, adjust the stirring speed to 300±100r / min, stir and keep warm for 15-25min; S2 Preparation of water phase: Disperse thickener and polyol with water, heat to 85±5℃, allow the materials to fully dissolve, and stir and keep warm for 15-20 minutes.

[0015] S3 Emulsification: Add the oil phase material obtained in step S1 and the water phase material obtained in step S2 into an emulsifying pot, stir under vacuum for 3-5 minutes, and then homogenize at a homogenization speed of 2500±300r / min for 5-8 minutes. Stop homogenizing after the material is fully emulsified; S4 Cool down to below 55℃ and add whitening active ingredients and preservatives.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The multifunctional refreshing skin care cream of the present invention selects titanium dioxide of different specifications as a concealer and a sunscreen respectively, and compounded with other organic sunscreens at the same time, optimizes the active component, introduces ingredients with whitening effect, so that the skin care cream has the effects of concealing, sunscreening and whitening. At the same time, by selecting suitable emulsifiers, oils, polyols, skin conditioners, film formers, thickeners, and optimizing the content of components, a multifunctional skin care cream with good stability, non-greasy skin-fitting, refreshing, long-lasting makeup, and excellent whitening effect can be obtained, and the skin care cream has good market prospects. DETAILED DESCRIPTION

[0017] The present invention is further described below with reference to specific examples, but the examples do not limit the present invention in any form. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the art.

[0018] Unless otherwise specified, the reagents and materials used in the following examples are commercially available.

[0019] The manufacturers and article numbers of some raw materials in the embodiments of the present invention are as follows:

[0020] Example 1 This embodiment provides a multifunctional refreshing skin care cream with the functions of concealing blemishes, sun protection and whitening, which is composed of the following raw materials in terms of weight percentage: Emulsifier: C14-22 alcohol (and) C12-20 alkyl glucoside 2%, polyglyceryl-6 stearate (and) polyglyceryl-6 behenate 1.5%, glyceryl stearate (and) PEG-100 stearate 0.5%; Sunscreen: Isoamyl p-methoxycinnamate (liquid organic sunscreen) 8%, Homosalate (liquid organic sunscreen) 6%, Diethylamino Hydroxybenzoyl Hexyl Benzoate (solid organic sunscreen) 2.5%, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (solid organic sunscreen) 1.2%, Titanium Dioxide-Nano (inorganic sunscreen) 0.5%, Ethylhexyl Salicylate (liquid organic sunscreen) 0%, Ethylhexyl Methoxycinnamate (liquid organic sunscreen) 0%, Ethylhexyl Triazone (solid organic sunscreen) 0.5%; Oil: 1.5% butyl octanol salicylate, 1% polydimethylsiloxane, 1.8% dibutyl adipate, 1% C15-19 alkane; Polyol: dipropylene glycol 4%, glycerol 1%; Whitening active ingredients: Combination I: lemon extract 3.0%, lemon fruit extract 0.5%, lemon seed oil 0.5%, Combination II: niacinamide 2%, tocopherol (vitamin E) 0.2%, bisabolol 0.2%, dipotassium glycyrrhizinate 0.2%; Concealer: CI 77891 non-nano titanium dioxide 2%; Skin conditioning agents: silica 0.5%, polymethylsilsesquioxane 0.3%, HDI / trimethylol hexyllactone crosspolymer 0.3%, boron nitride 0.5%; Film former: VP / eicosene copolymer 0.8%; Thickener: sodium acrylic acid (ester) copolymer 0.2%, xanthan gum 0.1%; Preservatives: p-hydroxyacetophenone 0.5%, 1,2-hexanediol 0.5%, 1,2-pentanediol 0.5%; Water: 54.2%.

[0021] The preparation method thereof comprises the steps of: S1 Preparation of oil phase: Add concealer and inorganic sunscreen to C15-19 alkane, grind on a three-roll mill for 3 times until uniform, then add organic sunscreen and remaining oil, mix evenly, keep the temperature of the mixed liquid at 85±5℃, stir to fully dissolve the materials, then add skin conditioner, film former, emulsifier, adjust the stirring speed to 300±100r / min, stir and keep warm for 20min; S2 Water phase preparation: Disperse thickener and polyol with water, heat to 85±5℃, stir and keep warm for 200min after the materials are fully dissolved; S3 Emulsification: Add the oil phase material obtained in step S1 and the water phase material obtained in step S2 into an emulsifying pot, stir under vacuum for 3 minutes, and then homogenize at a homogenization speed of 2500±300r / min for 7 minutes. Stop homogenizing after the material is fully emulsified; S4 Cool down to below 55℃ and add whitening active ingredients and preservatives.

[0022] Example 2 This embodiment provides a multifunctional refreshing skin care cream with the functions of concealing blemishes, sun protection and whitening, which is composed of the following raw materials in terms of weight percentage: Emulsifier: C14-22 Alcohol (and) C12-20 Alkyl Glucoside 2%, Polyglyceryl-6 Stearate (and) Polyglyceryl-6 Behenate 1.5%, Glyceryl Stearate (and) PEG-100 Stearate 1%; Sunscreen: Isoamyl p-methoxycinnamate (liquid organic sunscreen) 0%, Homosalate (liquid organic sunscreen) 0%, Diethylamino Hydroxybenzoyl Hexyl Benzoate (solid organic sunscreen) 2%, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (solid organic sunscreen) 2%, Titanium Dioxide-Nano (inorganic sunscreen) 1%, Ethylhexyl Salicylate (liquid organic sunscreen) 4%, Ethylhexyl Methoxycinnamate (liquid organic sunscreen) 9%, Ethylhexyl Triazone (solid organic sunscreen) 1%; Oil: Butyl Octyl Salicylate 1%, Polydimethylsiloxane 1%, Dibutyl Adipate 2%, C15-19 Alkane 0%; Polyol: dipropylene glycol 1%, glycerol 3%; Whitening active ingredients: Combination I: lemon extract 4%, lemon fruit extract 0.9%, lemon seed oil 0.1%, Combination II: Niacinamide 1.5%, Tocopherol (Vitamin E) 0.3%, Bisabolol 0.2%, Dipotassium Glycyrrhizinate 0%; Concealer: CI 77891 non-nano titanium dioxide 1.5%; Skin conditioning agents: silica 0.1%, polymethylsilsesquioxane 0.4%, HDI / trimethylol hexyllactone crosspolymer 0.4%, boron nitride 0.1%; Film former: VP / eicosene copolymer 0.5%; Thickener: sodium acrylic acid (ester) copolymer 0.1%, xanthan gum 0.1%; Preservatives: p-hydroxyacetophenone 0.5%, 1,2-hexanediol 0.8%, 1,2-pentanediol 0.2%; Water: 56.8%.

[0023] The preparation method thereof comprises the steps of: S1 Preparation of oil phase: Add concealer and inorganic sunscreen to part of the oil, grind twice on a three-roll mill until uniform, then add organic sunscreen and remaining oil, mix evenly, keep the temperature of the mixed liquid at 85±5℃, stir to fully dissolve the materials, then add skin conditioner, film former, emulsifier, adjust the stirring speed to 300±100r / min, stir and keep warm for 15min; S2 Water phase preparation: Disperse thickener and polyol in water, heat to 85±5℃, stir and keep warm for 20min after the materials are fully dissolved; S3 Emulsification: Add the oil phase material obtained in step S1 and the water phase material obtained in step S2 into an emulsifying pot, stir under vacuum for 5 minutes, and then homogenize at a homogenization speed of 2500±300r / min for 8 minutes. Stop homogenizing after the material is fully emulsified; S4 Cool down to below 55℃ and add whitening active ingredients and preservatives.

[0024] Example 3 This embodiment provides a multifunctional refreshing skin care cream with the functions of concealing blemishes, sun protection and whitening, which is composed of the following raw materials in terms of weight percentage: Emulsifier: C14-22 Alcohol (and) C12-20 Alkyl Glucoside 0%, Polyglyceryl-6 Stearate (and) Polyglyceryl-6 Behenate 1.5%, Glyceryl Stearate (and) PEG-100 Stearate 2%; Sunscreen: Isoamyl p-methoxycinnamate (liquid organic sunscreen) 0%, Homosalate (liquid organic sunscreen) 9%, Diethylamino Hydroxybenzoyl Hexyl Benzoate (solid organic sunscreen) 1.5%, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (solid organic sunscreen) 1%, Titanium Dioxide-Nano (inorganic sunscreen) 0.7%, Ethylhexyl Salicylate (liquid organic sunscreen) 0%, Ethylhexyl Methoxycinnamate (liquid organic sunscreen) 8%, Ethylhexyl Triazone (solid organic sunscreen) 0.5%; Oil: Butyl Octyl Salicylate 1.8%, Polydimethylsiloxane 1%, Dibutyl Adipate 1.2%, C15-19 Alkane 2%; Polyol: dipropylene glycol 3%, glycerol 3%; Whitening active ingredients: Combination I: lemon extract 2%, lemon fruit extract 0.3%, lemon seed oil 0.2%, Combination II: niacinamide 2.5%, tocopherol (vitamin E) 0%, bisabolol 0.3%, dipotassium glycyrrhizinate 0.2%; Concealer: CI 77891 non-nano titanium dioxide 2.5%; Skin conditioning agents: silica 1%, polymethylsilsesquioxane 0.1%, HDI / trimethylol hexyllactone crosspolymer 0.2%, boron nitride 0.7%; Film former: VP / eicosene copolymer 1%; Thickener: sodium acrylic acid (ester) copolymer 0.3%, xanthan gum 0.2%; Preservatives: p-hydroxyacetophenone 0%, 1,2-hexanediol 1%, 1,2-pentanediol 1%; Water: 50.3%.

[0025] The preparation method thereof comprises the steps of: S1 Preparation of oil phase: Add concealer and inorganic sunscreen to part of the oil, grind it through a three-roll mill for 4 times until it is uniform, then add organic sunscreen and the remaining oil, mix them evenly, keep the temperature of the mixed liquid at 85±5℃, stir to fully dissolve the materials, then add skin conditioner, film former and emulsifier, adjust the stirring speed to 300±100r / min, stir and keep warm for 25min; S2 Water phase preparation: Disperse thickener and polyol in water, heat to 85±5℃, stir and keep warm for 18min after the materials are fully dissolved; S3 Emulsification: Add the oil phase material obtained in step S1 and the water phase material obtained in step S2 into an emulsifying pot, stir under vacuum for 4 minutes, and then homogenize at a homogenization speed of 2500±300r / min for 6 minutes. Stop homogenizing after the material is fully emulsified; S4 Cool down to below 55℃ and add whitening active ingredients and preservatives.

[0026] Example 4 This embodiment provides a multifunctional refreshing skin care cream with the functions of concealing blemishes, sun protection and whitening, which is composed of the following raw materials in terms of weight percentage: Emulsifier: C14-22 alcohol (and) C12-20 alkyl glucoside 1.8%, polyglyceryl-6 stearate (and) polyglyceryl-6 behenate 1.3%, glyceryl stearate (and) PEG-100 stearate 0.8%; Sunscreen: Isoamyl p-methoxycinnamate (liquid organic sunscreen) 2%, Homosalate (liquid organic sunscreen) 5%, Diethylaminohydroxybenzoyl hexyl benzoate (solid organic sunscreen) 1%, Bis-ethylhexyloxyphenol methoxyphenyl triazine (solid organic sunscreen) 2%, Titanium dioxide-nano (inorganic sunscreen) 0.6%, Ethylhexyl salicylate (liquid organic sunscreen) 1%, Ethylhexyl methoxycinnamate (liquid organic sunscreen) 6%, Ethylhexyl triazone (solid organic sunscreen) 1%; Oil: Butyl Octyl Salicylate 0%, Polydimethylsiloxane 3%, Dibutyl Adipate 2%, C15-19 Alkane 1%; Polyol: dipropylene glycol 2%, glycerol 3%; Whitening active ingredients: Combination I: lemon extract 3.5%, lemon fruit extract 0.6%, lemon seed oil 0.3%, Combination II: niacinamide 1.8%, tocopherol (vitamin E) 0.2%, bisabolol 0%, dipotassium glycyrrhizinate 0.3%; Concealer: CI 77891 non-nano titanium dioxide 1.8%; Skin conditioning agents: silica 0.2%, polymethylsilsesquioxane 1%, HDI / trimethylol hexyllactone crosspolymer 0.1%, boron nitride 0.3%; Film former: VP / eicosene copolymer 0.6%; Thickener: sodium acrylic acid (ester) copolymer 0.2%, xanthan gum 0.2%; Preservatives: p-hydroxyacetophenone 1.0%, 1,2-hexanediol 0.5%, 1,2-pentanediol 0%; Water: 53.9%.

[0027] The preparation method thereof comprises the steps of: S1 Preparation of oil phase: add concealer and inorganic sunscreen to part of the oil, grind it through a three-roll mill for 4 times until it is uniform, then add organic sunscreen and the remaining oil, mix them evenly, keep the temperature of the mixed liquid at 85±5℃, stir to fully dissolve the materials, then add skin conditioner, film former and emulsifier, adjust the stirring speed to 300±100r / min, stir and keep warm for 20min; S2 Water phase preparation: Disperse thickener and polyol in water, heat to 85±5℃, stir and keep warm for 16min after the materials are fully dissolved; S3 Emulsification: Add the oil phase material obtained in step S1 and the water phase material obtained in step S2 into an emulsifying pot, stir under vacuum for 3 minutes, and then homogenize at a homogenization speed of 2500±300r / min for 7 minutes. Stop homogenizing after the material is fully emulsified; S4 Cool down to below 55℃ and add whitening active ingredients and preservatives.

[0028] Example 5 This embodiment provides a multifunctional refreshing skin care cream with the functions of concealing blemishes, sun protection and whitening, which is composed of the following raw materials in terms of weight percentage: Emulsifier: C14-22 Alcohol (and) C12-20 Alkyl Glucoside 1.2%, Polyglyceryl-6 Stearate (and) Polyglyceryl-6 Behenate 1.3%, Glyceryl Stearate (and) PEG-100 Stearate 1.5%; Sunscreen: Isoamyl p-methoxycinnamate (liquid organic sunscreen) 4%, Homosalate (liquid organic sunscreen) 7%, Diethylamino Hydroxybenzoyl Hexyl Benzoate (solid organic sunscreen) 0.5%, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (solid organic sunscreen) 1.5%, Titanium Dioxide-Nano (inorganic sunscreen) 0.9%, Ethylhexyl Salicylate (liquid organic sunscreen) 3%, Ethylhexyl Methoxycinnamate (liquid organic sunscreen) 2%, Ethylhexyl Triazone (solid organic sunscreen) 1.5%; Oil: 2% butyl octanol salicylate, 0% polydimethylsiloxane, 1.5% dibutyl adipate, 3% C15-19 alkane; Polyol: dipropylene glycol 3%, glycerol 2%; Whitening active ingredients: Combination I: lemon extract 2.8%, lemon fruit extract 1.5%, lemon seed oil 0.1%, Combination II: niacinamide 2.2%, tocopherol (vitamin E) 0.1%, bisabolol 0.1%, dipotassium glycyrrhizinate 0.1%; Concealer: CI 77891 non-nano titanium dioxide 2.2%; Skin conditioning agents: silica 0.3%, polymethylsilsesquioxane 0.5%, HDI / trimethylol hexyllactone crosspolymer 1%, boron nitride 0.2%; Film former: VP / eicosene copolymer 0.7%; Thickener: sodium acrylic acid (ester) copolymer 0.2%, xanthan gum 0.3%; Preservatives: p-hydroxyacetophenone 0.5%, 1,2-hexanediol 1.0%, 1,2-pentanediol 0%; Water: 50.3%.

[0029] The preparation method thereof comprises the steps of: S1 Preparation of oil phase: Add concealer and inorganic sunscreen to part of the oil, grind it through a three-roll mill for 4 times until it is uniform, then add organic sunscreen and the remaining oil, mix them evenly, keep the temperature of the mixed liquid at 85±5℃, stir to fully dissolve the materials, then add skin conditioner, film former and emulsifier, adjust the stirring speed to 300±100r / min, stir and keep warm for 25min; S2 Water phase preparation: Disperse thickener and polyol in water, heat to 85±5℃, stir and keep warm for 18min after the materials are fully dissolved; S3 Emulsification: Add the oil phase material obtained in step S1 and the water phase material obtained in step S2 into an emulsifying pot, stir under vacuum for 4 minutes, and then homogenize at a homogenization speed of 2500±300r / min for 6 minutes. Stop homogenizing after the material is fully emulsified; S4 Cool down to below 55℃ and add whitening active ingredients and preservatives.

[0030] Comparative Example 1 is the same as Example 1, except that isopentyl p-methoxycinnamate (liquid organic sunscreen) is replaced by octocrylene.

[0031] Comparative Example 2 is the same as Example 1, except that the amount of titanium dioxide-nano (inorganic sunscreen) added to the sunscreen is 1.5%, and the amount of water used is 53.2%.

[0032] Comparative Example 3 is the same as Example 1, except that the dibutyl adipate in the oil is replaced by an equal amount of C15-19 alkane.

[0033] Comparative Example 4 is the same as Example 1, except that the amount of concealer CI 77891 non-nano titanium dioxide is 3.5%, and the amount of water is 52.7%.

[0034] Comparative Example 5 is the same as Example 1, except that an equal amount of aluminum starch octylsuccinate is used to replace the silica in the skin conditioner.

[0035] Comparative Example 6 is the same as Example 1, except that the whitening active ingredient combination I contains only lemon fruit extract.

[0036] Comparative Example 7 is the same as Example 1, except that, in step S1, the oil phase is prepared by adding the concealer and the inorganic sunscreen to C15-19 alkane, and grinding the mixture once on a three-roll mill until it is uniform.

[0037] The composition table of each embodiment and comparative example is shown in Table 1.

[0038] Table 1 Composition table of each embodiment and comparative example

[0039] Test Example 1 Stability Test The skin care creams obtained in Examples 1 to 5 and Comparative Examples 1 to 7 were placed in environments of -18, 5°C, 25, and 45°C for 3 months, and their appearance and whether there were unstable phenomena such as delamination, insolubility, oiliness, and roughness were observed. The results are shown in Table 2.

[0040] In Comparative Example 2, too much inorganic sunscreen nano titanium dioxide was added, which easily caused the surface of the material to be rough, stratified at high temperature, and oil precipitation. In Comparative Example 3, C15-19 alkane was used to replace dibutyl adipate in the oil component, so that the low-temperature (below 4°C) crystalline sunscreen was precipitated. In Comparative Example 7, the inorganic powder concealer and physical sunscreen were passed through a three-roller machine once, and the dispersion was insufficient, which also led to poor overall stability of the product and the appearance of white spots when applied.

[0041] Table 2 Stability test results

[0042] Test Example 2 Human skin patch test According to the human skin patch test method of the 2015 edition of the "Technical Specification for Safety of Cosmetics", the skin care creams obtained in Examples 1 to 5 were patch tested on 30 people, and the test results were all negative, indicating that the products of the embodiments of the present invention have high safety.

[0043] Test Example 3 Sensory Test The evaluation team had 15 members (aged 20 to 35 years old), all of whom had received more than 3 months of sensory evaluation training to ensure that their understanding of the indicators was consistent and the evaluation results had a certain degree of reliability. Sensory specific tests were performed on the skin care creams of Examples 1-5 and Comparative Examples 1, 4, and 5, respectively.

[0044] The test method is: The test is carried out in a sensory evaluation laboratory with constant temperature and humidity (temperature 20-22°C, relative humidity 50%-60%). Samples must be randomly coded before testing. After testing a group of samples, the skin of the test area must be thoroughly cleaned and the next group of samples must be evaluated after sitting in the laboratory for 30 minutes. During the test, equal amounts of samples are taken and the samples are gently circled in the test area with fingers at a speed of 1 circle per second. The subjects score each indicator of the sample according to the four indicators of concealer, refreshing effect, spreadability, and stickiness, with a standard of 1 to 10 points. After 4 hours of use, the subjects evaluate the effect of use.

[0045] Concealer refers to the effect of the product on the face after application, 0 (none) → 10 (excellent effect); Refreshing feeling refers to the refreshing feeling of the skin within 5 minutes of applying the product, 0 (weak) → 10 (strong); Spreadability refers to the ease with which the paste is applied, 0 (difficult) → 10 (easy); The stickiness refers to the degree of adhesion between the material and the fingers after spreading, 0 (strong) → 10 (weak), and the final score of the index is the average score of the fifteen evaluation panel members. The results are shown in Table 3.

[0046] Table 3 Sensory test evaluation results

[0047] In Comparative Example 1, since the sunscreen agent in Example 1, isoamyl p-methoxycinnamate, was replaced by an equal amount of octocrylene, the skin felt heavy, sticky, and had poor spreadability. In Comparative Example 4, since the concealer CI 77891 titanium dioxide was added in excessive amounts, the product surface was rough and easy to rub mud, resulting in poor sensory perception and poor ductility. In Comparative Example 5, the refreshing effect was deteriorated after the silica was replaced by an equal amount of aluminum starch octyl succinate.

[0048] Test Example 4 Whitening Test The skin whitening and brightening effects were tested by parallel comparison between Example 1 and Comparative Example 6.

[0049] 30 volunteers aged 25-50 were selected and randomly divided into 2 groups. The creams of Example 1 and Comparative Example 6 were used once in the morning and evening respectively. The L* value and ITA° value of the subjects' faces were tested using a skin color difference test probe before use and in the first, second and fourth weeks. The results are shown in Tables 4 and 5, respectively.

[0050] The results show that: after the second week of use, the L* value and ITA° value of the subjects' faces showed statistical differences compared with those before use, while no statistical differences were shown in Comparative Example 6 after 2 weeks of use. After 4 weeks of use, the effects of Example 1 and Comparative Example 6 were more significant, indicating that compared with Comparative Example 6 using only lemon fruit extract, Example 1 using a combination of multiple extracts had a better effect, significantly improving skin brightness and lightening skin color. The results are shown in the table.

[0051] The subjects did not experience any adverse reactions during use, indicating that the test products have a high degree of safety.

[0052] Table 4 L* value and difference analysis before and after volunteers used the product

[0053] Table 5 ITA° values ​​and difference analysis before and after volunteers used the product

[0054] Test Example 5 SPF Test According to the method for determining the sun protection index (SPF value) of sunscreen cosmetics in the "Technical Specification for Safety of Cosmetics" (2015 edition), the specific values ​​of Examples 1-5 are shown in the following table. It can be seen that the skin care creams of the embodiments of the present invention have good sun protection function.

[0055] Table 6 SPF test results

[0056] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] 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 multifunctional refreshing skin cream with concealing, sun protection and whitening properties, characterized in that: Includes the following ingredients: emulsifier, sunscreen, oil, polyol, whitening active, concealer, skin conditioner, film former, thickener, preservative, water; The emulsifier is two or more of C14-22 alcohol and C12-20 alkyl glucoside, polyglyceryl-6 stearate and polyglyceryl-6 behenate, glyceryl stearate and PEG-100 stearate; The sunscreen is composed of an inorganic sunscreen and an organic sunscreen, wherein the inorganic sunscreen is nano titanium dioxide particles; the organic sunscreen is five or more of ethylhexyl salicylate, isopentyl p-methoxycinnamate, homosalate, ethylhexyl methoxycinnamate, diethylaminohydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, and ethylhexyl triazone; The oil comprises dibutyl adipate, which is composed of three or more components, and the remaining components are selected from butyl octanol salicylate, polydimethylsiloxane, and C15-19 alkane; The polyol is at least one of dipropylene glycol and glycerol; The whitening active substances are composed of combination I and combination II, wherein combination I is composed of lemon extract, lemon fruit extract, and lemon seed oil; combination II contains niacinamide, which is composed of three or more components, and the remaining components are selected from tocopherol, bisabolol, and dipotassium glycyrrhizinate; The concealer is non-nano titanium dioxide particles; The skin conditioning agent is at least one of boron nitride, polymethylsilsesquioxane, HDI / trimethylol hexyl lactone cross-linked polymer, and silica; The film former is VP / eicosene copolymer; The thickener is at least one of sodium acrylic acid (ester) copolymer and xanthan gum.

2. The multifunctional refreshing skin cream according to claim 1, characterized in that: According to weight percentage, it includes the following components: emulsifier 3.5-4.5%, sunscreen 16-22%, oil 4.0-7.0%, polyol 4-6%, whitening active ingredient 4-8%, concealer 1.5-2.5%, skin conditioner 1.0-2.0%, film former 0.5-1%, thickener 0.2-0.5%, preservative 1.0-2.0%, water 50%-60%.

3. The multifunctional refreshing skin cream according to claim 2, characterized in that: The multifunctional refreshing skin care cream contains 15.5-21% of an organic sunscreen and 0.5-1.0% of an inorganic sunscreen.

4. The multifunctional refreshing skin cream according to claim 3, characterized in that: The multifunctional refreshing skin care cream contains 13-17% of liquid organic sunscreen and 3-5% of solid organic sunscreen, wherein the liquid organic sunscreen is two or more of ethylhexyl salicylate, isoamyl p-methoxycinnamate, homosalate, and ethylhexyl methoxycinnamate, and the solid organic sunscreen is diethylaminohydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, and ethylhexyl triazone.

5. The multifunctional refreshing skin cream according to claim 2, characterized in that: The multifunctional refreshing skin care cream contains 1-2% dibutyl adipate.

6. The multifunctional refreshing skin cream according to claim 2, characterized in that: The multifunctional refreshing skin care cream contains 2.5%-5% of combination I and 2%-3% of combination II.

7. The multifunctional refreshing skin cream according to claim 6, characterized in that: The combination 1 contains 2-4% lemon extract.

8. The multifunctional refreshing skin cream according to claim 6, characterized in that: The combination II contains 1.5-2.5% niacinamide.

9. The multifunctional refreshing skin cream according to claim 1, characterized in that: The preservative is at least two of 1,2-hexanediol, 1,2-pentanediol and p-hydroxyacetophenone.

10. The method for preparing the multifunctional refreshing skin cream according to any one of claims 1 to 9, characterized in that: Includes steps: S1 Preparation of oil phase: add concealer and inorganic sunscreen to part of the oil, grind it through a three-roll mill for 2-3 times until it is uniform, then add organic sunscreen and remaining oil, mix evenly, keep the temperature of the mixed liquid at 85±5℃, stir to fully dissolve the materials, then add skin conditioner, film former, emulsifier, adjust the stirring speed to 300±100r / min, stir and keep warm for 15-25min; S2 Water phase preparation: Disperse thickener and polyol in water, heat to 85±5℃, stir and keep warm for 15-20min after the materials are fully dissolved; S3 Emulsification: Add the oil phase material obtained in step S1 and the water phase material obtained in step S2 into an emulsifying pot, stir under vacuum for 3-5 minutes, and then homogenize at a homogenization speed of 2500±300r / min for 5-8 minutes. Stop homogenizing after the material is fully emulsified; S4 Cool down to below 55℃ and add whitening active ingredients and preservatives.

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