Composition giving aurora appearance and application of composition in preparation of transparent skin products with aurora appearance

Abstract

The invention provides a composition with an aurora appearance and application of the composition in preparation of transparent skin products with the aurora appearance. On the basis of deep research, the composition capable of enabling the transparent skin products to generate the aurora appearance is disclosed for the first time, and the composition comprises the following components: polyglycerol-2 laurate, propylene glycol laurate, an anionic surfactant and polyhydric alcohol. According to the composition, an excellent aurora appearance can be obtained without adding a traditional pearling agent, and meanwhile, the stability is good. The composition capable of enabling the transparent skin products to generate the aurora appearance is added into the transparent skin products without the aurora appearance, the aurora appearance can be generated, the bright and colorful aurora appearance comprises pink, orange, yellow, green, blue, purple and other hues, and the dominant hue of the aurora appearance is controllable and adjustable.

Description

Technical Field

[0001] The invention relates to the technical field of cosmetics / skin care products, and particularly to a composition for imparting an aurora appearance and its application in the preparation of transparent skin-like products with an aurora appearance. Background Art

[0002] With the continuous progress of modern technology and people's increasing attention and pursuit of beauty, the cosmetics industry has been continuously developing, with new technologies and products emerging in an endless stream. Personalized beauty products are another major trend in the cosmetics industry. More and more cosmetics brands are launching personalized products with various appearances, functions, and dosage forms. A personalized and unique appearance can bring a visual impact to consumers, stimulate their desire to use, increase the competitive advantage of products, and enable products to stand out in the highly competitive market. Currently, there are capsule water, petal water, bubble water, multi-layer textured lotion, and pearlescent lotion on the market.

[0003] In the cosmetics market, consumers' demand for "high-value" products drives the growth of the pearlescent material market, especially in the high-end cosmetics field with significant application potential.

[0004] Currently, there are already pearlescent lotions on the market, such as Guerlain The Serum and 3CE Pearlescent Fixing Spray from South Korea. Most of them add pearlescent agents, such as the first type of natural pearlescent agents like mica and pearlescent, only presenting the appearance of mica or pearlescent components themselves; or the second type of raw materials that are not pearlescent agents but can produce a pearlescent appearance, such as stearic acid and its derivatives, polyglyceryl-10 stearate, polyglyceryl-10 isostearate, polyglyceryl-10 laurate, polyglyceryl-10 oleate, etc. The lotions obtained by the second type of technology only present a white pearlescent appearance, with problems such as relatively single appearance, as well as weak or unstable pearlescent appearance.

[0005] "High-value" products with good appearance also have a series of R & D difficulties, including: (1) It is difficult to control the stability of optical effects. (2) The balance between environmental protection and safety. Traditional pearlescent pigments may contain heavy metal components. Developing pollution-free and low-allergenic materials requires breaking through technical barriers and also needs to consider cost controllability. (3) The production process is highly complex. The production of pearlescent materials in existing technologies involves precise ratios (such as mica particle size and coating thickness), high-temperature calcination and other links, with great difficulty in adjusting process parameters, high equipment investment, and high energy consumption costs. (4) Challenges in multi-scenario adaptability. For color cosmetics products, it is necessary to ensure the compatibility of pearlescent powder with the substrate (such as oils, waxes) to avoid caking or falling off; the packaging materials for skin care products need to meet the requirements of weather resistance (anti-oxidation, anti-ultraviolet).

[0006] Therefore, there is an urgent need in this field to develop optimized products with richer and more beautiful appearance colors and good stability. Summary of the Invention

[0007] The object of the present invention is to provide a composition capable of imparting an aurora appearance and its application in the preparation of transparent skin-like products having an aurora appearance.

[0008] In a first aspect of the present invention, there is provided a composition capable of imparting an aurora appearance to a transparent skin-like product (cosmetic / skin care product); the composition includes: polyglyceryl-2 laurate, propylene glycol laurate, anionic surfactant, polyol; wherein:

[0009] Polyglyceryl-2 laurate: 3-40 parts by weight, preferably 5-35 parts by weight;

[0010] Propylene glycol laurate: 2-25 parts by weight, preferably 3-20 parts by weight;

[0011] Anionic surfactant: 0.01-7 parts by weight, preferably 0.02-5 parts by weight;

[0012] Polyol: 3-55 parts by weight, preferably 5-50 parts by weight.

[0013] In one or more embodiments, the composition capable of imparting an aurora appearance to a transparent skin-like product further includes water (an effective amount of water); preferably, the water is 3-65 parts by weight; more preferably 5-62 parts by weight.

[0014] In one or more embodiments, the total amount of polyglyceryl-2 laurate, propylene glycol laurate, anionic surfactant, polyol and water is 100 parts by weight.

[0015] In one or more embodiments, the composition capable of imparting an aurora appearance to a transparent skin-like product (cosmetic / skin care product) may further include a pharmaceutically acceptable carrier, excipient or various regulators (such as odor regulators, viscosity regulators, etc.).

[0016] In one or more embodiments, the polyol is selected from the group consisting of: 1,3-propanediol, butanediol, glycerol, propylene glycol, dipropylene glycol, methyl propylene glycol, 1,2-pentanediol, 1,2-hexanediol, sorbitol, glycerol polyether-26, or a combination thereof.

[0017] In one or more embodiments, the anionic surfactant is selected from the group consisting of: sodium bis(lauroylglutamyl)lysinate, subtilisin peptone sodium, potassium cocoyl hydrolyzed oat protein, or a combination thereof.

[0018] In another aspect of the present invention, there is provided a method for preparing a composition capable of imparting an aurora appearance to a transparent skin-like product, including: mixing polyglyceryl-2 laurate, propylene glycol laurate, anionic surfactant and polyol; wherein:

[0019] Polyglycerol-2 laurate: 3 - 40 parts by weight, preferably 5 - 35 parts by weight;

[0020] Propylene glycol laurate: 2 - 25 parts by weight, preferably 3 - 20 parts by weight;

[0021] Anionic surfactant: 0.01 - 7 parts by weight, preferably 0.02 - 5 parts by weight;

[0022] Polyol: 3 - 55 parts by weight, preferably 5 - 50 parts by weight.

[0023] In one or more embodiments, the polyglycerol-2 laurate, propylene glycol laurate, anionic surfactant, and polyol are mixed in water; more preferably, the water is 3 - 65 parts by weight; preferably 5 - 62 parts by weight.

[0024] In one or more embodiments, the method includes:

[0025] A: Add polyglycerol-2 laurate, propylene glycol laurate, and polyol to a stirring pot, stir and disperse evenly at 300 - 800 rpm, stir and heat to 70 - 85 °C;

[0026] B: Continue to add the anionic surfactant and a small amount of deionized water to an auxiliary pot, stir and mix evenly at 300 - 800 rpm, stir and heat to 70 - 85 °C until completely dissolved and mixed evenly;

[0027] C: Add the content of step B to the stirring pot, keep the temperature at 70 - 85 °C, and stir at 1000 - 2000 rpm for 3 - 15 minutes;

[0028] D: Stir and cool down to 25 - 30 °C at 300 - 800 rpm, and discharge to obtain a composition that can give a transparent skin care product an aurora appearance.

[0029] In another aspect of the present invention, there is provided the use of the composition according to any one of the preceding paragraphs in the preparation of a transparent skin care product having an aurora appearance.

[0030] In another aspect of the present invention, there is provided a transparent skin care product having an aurora appearance, which includes the composition according to any one of the preceding paragraphs and a transparent skin care product (cosmetics / skin care products).

[0031] In one or more embodiments, the transparent skin care product includes (but is not limited to): transparent aqueous solution, transparent essence, transparent gel.

[0032] In one or more embodiments, the proportion of the composition capable of imparting an aurora appearance to the transparent skin-like product in the transparent skin-like product with an aurora appearance is 2-30% by weight, preferably 3-25%, more preferably 3-20%.

[0033] In one or more embodiments, in the transparent skin-like product with an aurora appearance, the transparent aqueous solution includes: a pH buffer, water, and optional functional ingredients.

[0034] In one or more embodiments, in the transparent skin-like product with an aurora appearance, the transparent essence includes: carbomer, a pH regulator, water, and optional functional ingredients.

[0035] In one or more embodiments, in the transparent skin-like product with an aurora appearance, the transparent gel includes: carbomer, a pH regulator, water, and optional functional ingredients.

[0036] In one or more embodiments, in the transparent skin-like product with an aurora appearance, the functional ingredients include (but are not limited to): preservative ingredients, such as hydroxyacetophenone and phenoxyethanol.

[0037] In one or more embodiments, the transparent aqueous solution includes: 0.4 parts by weight of a pH buffer, 0.3 parts by weight of hydroxyacetophenone, 0.3 parts by weight of phenoxyethanol, and 99 parts by weight of water.

[0038] In one or more embodiments, the transparent essence includes: 0.2 parts by weight of carbomer, 0.2 parts by weight of a pH regulator, 0.3 parts by weight of hydroxyacetophenone, 0.3 parts by weight of phenoxyethanol, and 99 parts by weight of water.

[0039] In one or more embodiments, the transparent gel includes: 0.5 parts by weight of carbomer, 0.5 parts by weight of a pH regulator, 0.3 parts by weight of hydroxyacetophenone, 0.3 parts by weight of phenoxyethanol, and 98.4 parts by weight of water.

[0040] In one or more embodiments, in the transparent skin-like product with an aurora appearance, pharmaceutically acceptable carriers, excipients, or various regulators (such as odor regulators, viscosity regulators, etc.) may also be included.

[0041] In one or more embodiments, the pH buffer includes: one or more of citric acid, sodium citrate, glycine, disodium hydrogen phosphate, sodium dihydrogen phosphate, and 2-(4-(2-hydroxyethyl)piperazin-1-yl)ethanesulfonic acid, and the pH value of the transparent appearance product is 5-7.

[0042] In one or more embodiments, the pH regulator includes one or more of arginine, tromethamine, sodium hydroxide, and potassium hydroxide, and the pH value of the transparent appearance product is 5-7.

[0043] In another aspect of the present invention, a method for preparing a transparent skin-like product with an aurora appearance is provided, including: mixing any of the above-described compositions with a transparent skin-like product (cosmetic / skin care product).

[0044] In another aspect of the present invention, a package (box) is provided, which includes: a container, and any of the above-described compositions contained in the container, and the composition is used to make the transparent skin-like product have an aurora appearance.

[0045] In another aspect of the present invention, a package (box) is provided, which includes: a container, and any of the above-described transparent skin-like products with an aurora appearance contained in the container.

[0046] In one or more embodiments, in the above-mentioned package (box), the composition is prepared into a unit-dose package / container. For example, the daily dose is in one package / container, or the daily amount is split into separate independent packages / containers in several times.

[0047] The above-mentioned features mentioned in the present invention, or the features mentioned in the embodiments, can be combined arbitrarily. All the features disclosed in the specification of this case can be used in combination with any composition form, as long as there is no contradiction in the combination of these features, and all possible combinations should be considered as the scope described in this specification. Each feature disclosed in the specification can be replaced by any alternative feature that can provide the same, equivalent or similar purpose. Therefore, unless otherwise specified, the disclosed features are only general examples of equivalent or similar features.

[0048] Other aspects of the present invention will be obvious to those skilled in the art due to the disclosure herein. Description of the Drawings

[0049] Figure 1 It is a side photo of the aurora appearance of the cosmetics prepared in Examples 6 to 9.

[0050] Figure 2 It is a front photo of the aurora appearance of the cosmetics prepared in Examples 6 to 9.

[0051] Figure 3 It is a photo of the aurora appearance (flowing sand property) of the cosmetics prepared in Example 8.

[0052] Figure 4 It is a 100-fold polarized light microscope photo of the cosmetics prepared in Example 8.

[0053] Figure 5 It is the aurora liquid crystal state of Example 10 under a polarizing plate. Detailed implementation mode

[0054] Through in-depth research, the present inventor has first revealed a composition that can give transparent skin care products an aurora appearance, which includes the following components: polyglyceryl-2 laurate, propylene glycol laurate, an anionic surfactant, and a polyol. This composition can obtain an excellent aurora appearance without adding traditional pearlescent agents and has good stability. The present invention also discloses a preparation method of this composition.

[0055] By using the above composition that can give transparent skin care products an aurora appearance and adding it to transparent skin care products that do not have an aurora appearance, an aurora appearance can be produced. Its gorgeous aurora appearance includes hues such as pink, orange, yellow, green, blue, and purple, and the main hue of the aurora appearance can be controllably adjusted.

[0056] Terms

[0057] To enable those skilled in the art to understand the features and effects of the present invention, the following provides a general description and definition of the terms and expressions mentioned in the specification and claims. Unless otherwise specified, all technical and scientific terms used herein have the ordinary meanings understood by those skilled in the art for the present invention. In case of conflicts, the definitions in this specification shall prevail.

[0058] As used herein, the term "composition (constituent) of the present invention" refers to a substance containing an effective amount of polyglyceryl-2 laurate, propylene glycol laurate, an anionic surfactant, and a polyol as the main active ingredients (components) as described in the present invention. The dosage of the active ingredients in the composition is as defined in the present invention. In some cases where necessary, dilution or concentration can also be carried out.

[0059] As used herein, the term "pharmaceutically acceptable" components are substances that are suitable for humans and / or animals without excessive adverse side effects (such as toxicity, irritation, and allergic reactions), that is, substances with a reasonable benefit / risk ratio.

[0060] As used herein, the term "pharmaceutically acceptable carrier" refers to a carrier that enables the administration of a cosmetic or personal care product, including various excipients and diluents, which are not themselves essential active ingredients and are not unduly toxic upon administration. Suitable carriers are well known to those of ordinary skill in the art. A full discussion of cosmetically acceptable excipients can be found in the Cosmetics Hygiene Standard 2015 Edition. Such carriers in the composition can include humectants, emulsifiers, thickeners, chelating agents, emollients, etc. For example, but not limited to, water, 1,2 - hexanediol, p - hydroxyacetophenone, butylene glycol, panthenol, dipotassium glycyrrhizinate, arginine, glycerin, betaine, sodium hyaluronate, propylene glycol, glyceryl stearate / PEG - 100 stearate, glyceryl stearate, xanthan gum, hydroxyethyl cellulose, carbomer, disodium EDTA, isododecane, isooctyl palmitate, cetearyl alcohol, cetylstearyl alcohol, polydimethylsiloxane, citric acid or its salts, behenyl alcohol, behenyl polyether, cetyl polyether, pentaerythrityl tetra(ethylhexanoate), squalane, cetyl ethylhexanoate, etc.

[0061] As used herein, the term "effective amount" refers to an amount that can produce a function or activity in humans and / or animals and is acceptable to humans and / or animals.

[0062] As used herein, the terms "comprising" or "including" include "containing", "consisting essentially of", and "consisting of".

[0063] As used herein, the term "consisting essentially of" means that in the said composition, in addition to containing the essential ingredients or components (polyglyceryl - 2 laurate, propylene glycol laurate, anionic surfactant, polyol), it may also contain a small amount of minor components and / or impurities that do not affect the active ingredient. For example, it may contain additives commonly used in this field or other similar fields.

[0064] As used herein, the term "unit dosage form" means that for the convenience of administration, the composition of the present invention is prepared into a dosage form required for single use, including but not limited to various clear aqueous solutions, gels, emulsions, or essences, etc. The said unit dosage form contains the composition of the present invention suitable for the single - time, single - day, or unit - time dosage.

[0065] As used herein, "parts by weight" or "number of parts by weight" are used interchangeably, and the parts by weight can be any fixed weight expressed in milligrams, grams, or kilograms (such as 1 mg, 1 g, 2 g, 5 g, or 1 kg, etc.). For example, a composition composed of 1 part by weight of component a and 9 parts by weight of component b can be a composition composed of 1 gram of component a + 9 grams of component b, or a composition composed of 10 grams of component a + 90 grams of component b, etc. In the said composition, the percentage content of a certain component = (the number of parts by weight of this component / the sum of the number of parts by weight of all components) × 100%. Therefore, in a composition composed of 1 part by weight of component a and 9 parts by weight of component b, the content of component a is 10%, and the content of component b is 90%.

[0066] Although the numerical ranges and parameters used to define the broader scope of the present invention are approximate values, the relevant values in the specific embodiments have been presented as precisely as possible herein. However, any numerical value inherently and inevitably contains standard deviations due to individual testing methods. Here, "about" generally means that the actual value is within plus or minus 10%, 5%, 1%, or 0.5% of a specific numerical value or range. Or, the term "about" represents that the actual value falls within the acceptable standard error of the average value, depending on the consideration of those skilled in the art. Except for experimental examples, or unless otherwise clearly stated, it is understood that all ranges, quantities, numerical values, and percentages (such as those used to describe material usage, time length, temperature, operating conditions, quantity ratios, and others similar) used herein are modified by "about". Therefore, unless otherwise stated to the contrary, the numerical parameters disclosed in this specification and the appended claims are approximate values and can be changed as needed. At least these numerical parameters should be understood as the indicated significant digits and the values obtained by applying the general rounding method.

[0067] Unless otherwise defined in this specification, the meanings of the scientific and technical terms used herein are the same as those understood and commonly used by those skilled in the art. In addition, without conflict with the context, the singular nouns used in this specification cover the plural forms of the nouns; and when the plural nouns are used, they also cover the singular forms of the nouns.

[0068] In this article, all features defined in the form of numerical ranges or percentage ranges, such as numerical values, quantities, contents, and concentrations, are only for the sake of simplicity and convenience. Accordingly, the description of the numerical range or percentage range should be regarded as having covered and specifically disclosed all possible sub-ranges and individual numerical values (including integers and fractions) within the range.

[0069] The theories or mechanisms described and disclosed herein should not limit the scope of the present invention in any way, that is, the content of the present invention can be implemented without being limited by any specific theory or mechanism.

[0070] Composition

[0071] The present invention provides a composition capable of imparting an aurora appearance to transparent skin care products (cosmetics / skin care products), including: an effective amount of polyglyceryl-2 laurate, propylene glycol laurate, an anionic surfactant, and a polyol as the main active ingredients.

[0072] Preferably, in a specific embodiment, the composition is further prepared into a usable preparation, and the preparation contains the following components: polyglyceryl-2 laurate, propylene glycol laurate, an anionic surfactant, a polyol, and water.

[0073] In a preferred example, the polyol is any one or a mixture in any ratio of the following: glycerol, 1,3-propanediol, propylene glycol, butanediol, dipropylene glycol, methyl propylene glycol, 1,2-pentanediol, 1,2-hexanediol, sorbitol, and polyglyceryl ether-26.

[0074] In a preferred example, the anionic surfactant is any one or a mixture in any ratio of the following: sodium bis(lauramidoglutamine) lysinate, subtilisin peptone sodium, and potassium coco-hydrolyzed oat protein.

[0075] As a preferred embodiment of the present invention, the dosages of the main active components / active ingredients for formulating the composition of the present invention are shown in Table a.

[0076] Table a (parts by weight)

[0077] Component Content Preferred amount Example Polyglycerol-2 laurate 3-40 5-35 5,10,15,20,25,30,35 Propylene glycol laurate 2-25 3-20 3,5,10,12,15,20 Anionic surfactant 0.01-7 0.02-5 0.02,0.05,0.1,0.5 1,1.5,2,3,4,5 Polyol 3-55 5-50 5,10,15,20,25,30,35,40,50

[0078] The above formula ranges in the table are used as a guide for the preferred scheme. However, it should be understood that when used for the research and development of the composition, the effective dose of the composition used can vary according to the actual application situation. For example, it can be made into a concentrated form or a diluted form, etc., and these variant forms should also be included in the present invention.

[0079] The present invention also includes compounds, preparation products, analogs, and / or their salts, hydrates, or precursors equivalent to the active components listed in the above table; including both naturally occurring and synthetic substances.

[0080] In a preferred example, the above composition preparation is a transparent aqueous solution, a transparent essence, or a transparent gel.

[0081] In a preferred example, the following method is used to prepare the composition capable of imparting an aurora appearance to transparent skin care products (cosmetics / skin care products):

[0082] A: Add polyglyceryl-2 laurate, propylene glycol laurate, and polyol to a stirring pot, stir and disperse evenly at 300 - 800 rpm, and stir and heat to 70 - 85 °C;

[0083] B: Continuously add an anionic surfactant and a small amount of deionized water into the auxiliary pot, stir and mix evenly at 300 - 800 rpm, stir and heat to 70 - 85°C until completely dissolved and mixed evenly;

[0084] C: Add the product of step B into the stirring pot, keep the temperature at 70 - 85°C, and stir at 1000 - 2000 rpm for 3 - 15 minutes;

[0085] D: Stir and cool down to 25 - 30°C at 300 - 800 rpm, and discharge to obtain a composition that can give a transparent skin care product an aurora appearance.

[0086] The above formula range serves as a guidance for the preferred solution. However, it should be understood that when used for the research and development of the composition, the effective dose of the composition used may vary according to the actual application situation. For example, it can be made into a concentrated form or a diluted form, etc., and these variant forms should also be included in the present invention.

[0087] The present invention also includes equivalents of the active components listed in the above table and formulated products.

[0088] In some preferred embodiments of the present invention, the composition is in unit dosage form. When the composition is prepared into a unit dosage form, for example, 1 dose of the unit dosage form can be administered daily / every other day; or 1 - 3 or 1 - 2 doses can be administered daily, depending on the amount of the active component in the unit dosage form.

[0089] The preparation method of the composition of the present invention is determined according to the dosage form to be prepared and the administration route.

[0090] Using the composition that can give a transparent skin care product an aurora appearance, the present invention further prepares a transparent skin care product with an aurora appearance. The transparent skin care products include (but are not limited to): transparent aqueous solutions, transparent essences, transparent gels / gels. A variety of functional ingredients can be included in the transparent skin care products. It can be understood that a variety of functional ingredients can be applied to the present invention to obtain cosmetics / skin care products with different effects and an aurora appearance.

[0091] Transparent appearance cosmetics / skin care products include but are not limited to transparent aqueous solutions, transparent essences, and transparent gels / gels for skin care and cleansing / makeup removing, such as lotion, spray, and makeup remover, etc. The preparation process of transparent appearance products is a conventional preparation process in the art.

[0092] Efficacy and Application

[0093] In cosmetic applications, polyglyceryl-2 laurate has both hydrophilic and lipophilic groups and has an emulsifying effect. It can evenly disperse the oil phase and water phase to form a stable emulsified product, reduce the interfacial tension, form a natural protective layer, and prevent the product from stratifying and resulting in quality degradation. Polyglyceryl-2 laurate is derived from natural plant sources, does not contain PEG, and is green and safe.

[0094] Propylene glycol laurate has lipophilicity. Propylene glycol laurate has good applications in skin care and cleansing cosmetics.

[0095] Although neither polyglyceryl-2 laurate nor propylene glycol laurate is a pearlescent agent, however, in the present invention, the inventor has prepared a skin care product capable of producing a pearlescent appearance by means of reasonable formulation design using substances that are not optical regulators in the traditional sense, which is unexpected to those of ordinary skill in the art.

[0096] Therefore, polyglyceryl-2 laurate and propylene glycol laurate used in the present invention are not used as pearlescent agents in the prior art. A novel composition that can make transparent skin care products produce an aurora appearance has been prepared, that is, adding the composition to transparent skin care products can make them produce an aurora appearance, and the main aurora color tone of the aurora appearance is controllable. The presented main aurora color tones are also different, the aurora colors are rich and colorful, and it has a flowing sand property.

[0097] The main advantages of the technical solution of the present invention are as follows:

[0098] 1. Do not add traditional pearlescent agents.

[0099] 2. The composition can make transparent skin care products produce an aurora appearance.

[0100] 3. The main color tone of the aurora appearance is controllable.

[0101] 4. Good stability.

[0102] The present invention can be better understood from the following examples. However, those skilled in the art should understand that the specific methods and results are only for detailed description of the present invention and not for limiting the present invention. The experimental methods without specific conditions noted in the following examples are generally in accordance with conventional conditions or the conditions recommended by the manufacturer.

[0103] I. Preparation of the composition

[0104] In the following examples, polyglyceryl-2 laurate, propylene glycol laurate, and anionic surfactants are all conventional products that can be obtained through commercial purchase.

[0105] Specifically, the CAS numbers of the compounds are as follows:

[0106] Polyglycerol-2 laurate: CAS No.: 96499-68-2;

[0107] Propylene glycol laurate: CAS No.: 27194-74-7;

[0108] Anionic surfactants: Sodium bis(lauramidoglutamyl)lysinate (CAS No.: 1086340-46-6), Subtilisin (CAS No.: 302933-83-1) and Potassium coco-hydrolyzed oat protein (CAS No.: 68955-39-9).

[0109] Prepare the compositions of Examples 1-12 according to the contents of the components in Tables 1 and 2, based on the total weight.

[0110] Table 1 (parts by weight)

[0111]

[0112]

[0113] Table 2 (parts by weight)

[0114] Ingredient Example 6 Example 7 Example 8 Example 9 Example 10 Example 11 Example 12 Example 13 Composition of Example 1 16 18.5 20 — — — — — Composition of Example 2 — — — 3 — — — 3 Composition of Example 3 — — — — — 5 — — Composition of Example 4 — — — — 8 — — — Composition of Example 5 — — — — — — 6 — Composition of Example 6 — — — — — — — — Transparent aqueous solution Up to 100 Up to 100 Up to 100 Up to 100 Up to 100 — — — Transparent essence — — — — — Up to 100 — — Transparent gel — — — — — — Up to 100 — Transparent aqueous solution 1 Up to 100

[0115] Prepare the compositions of Comparative Examples 1-16 according to the contents of the components in Tables 3 and 4, based on the total weight.

[0116] Table 3 (parts by weight)

[0117]

[0118]

[0119] Table 4 (parts by weight)

[0120]

[0121] The contents of the components of the transparent appearance products, including transparent aqueous solutions, transparent essences and transparent gels / gels, are shown in Table 5, based on the total weight. Among them, the pH buffer is specifically citric acid; the pH regulator is specifically arginine; the pH value of the transparent appearance product is 5-7.

[0122] Table 5 (parts by weight)

[0123] Ingredient Transparent aqueous solution Transparent essence Transparent gel Transparent aqueous solution 1 Carbomer — 0.2 0.5 — pH regulator — 0.2 0.5 — pH buffer 0.4 — — 0.4 p-Hydroxyacetophenone 0.3 0.3 0.3 — Phenoxyethanol 0.3 0.3 0.3 — Water Up to 100 Up to 100 Up to 100 Up to 100 pH: 5.8 pH: 6.2 pH: 6.5 pH: 5.8

[0124] Prepare each composition according to the steps in Table 6.

[0125] Table 6

[0126]

[0127]

[0128]

[0129] II. Aurora Effect Test and Stability Experiment

[0130] (I) Appearance Analysis of Example Compositions

[0131] The compositions of Examples 1-5 were evaluated by observing their appearance. The results showed that they had no aurora appearance.

[0132] The compositions of Examples 6-13 were added to transparent products: transparent aqueous solutions, transparent essences, and transparent gels / gels. They were evaluated by observing their appearance. The results showed an aurora appearance effect. They were respectively placed under normal temperature, -18°C, and 50°C conditions for stability experiments, and the changes of the samples were tested after 1 month. The specific results are shown in Table 7 (√ indicates that there is no obvious change in the sample).

[0133] Table 7

[0134] Example Aurora appearance Aurora intensity Aurora color Normal temperature 50℃ -18℃ 6 Yes Strong Pinkish √ √ √ 7 Yes Strong Yellowish √ √ √ 8 Yes Strong Greenish √ √ √ 9 Yes Strong Purple-blue √ √ √ 10 Yes Medium Light purple √ √ √ 11 Yes Weak to medium Light purple-white √ √ √ 12 Yes Weak Light blue √ √ √ 13 Yes Strong Purple-blue — — —

[0135] The specific aurora appearance of the composition products of Examples 6-9 is as Figure 1 - Figure 3 shown. They all have an ideal aurora appearance, manifested as differences in color. Considering the color appearance comprehensively, Examples 8 and 9 are particularly beautiful, especially Example 8.

[0136] The micrograph of the composition product of Example 8 observed under 100-fold polarized light of a microscope is as Figure 4 shown.

[0137] The appearance of the composition product of Example 10 was observed under a polarizing plate, presenting an obvious aurora liquid crystal state, as Figure 5 shown.

[0138] Therefore, the composition obtained by the present invention, when added to a transparent product, results in a product in a liquid crystal state.

[0139] (II) Appearance Analysis of Comparative Example Compositions

[0140] The compositions of Comparative Examples 1-8 were evaluated by observing their appearance. The results showed that they had no aurora appearance.

[0141] Comparative Examples 9-16 were obtained by adding the compositions obtained in Comparative Examples 1-8 to transparent products. They were evaluated by observing their appearance, and the specific appearance test results are shown in Table 8.

[0142] Table 8

[0143] Comparative example Aurora appearance Single white pearlescent appearance Appearance 9 No No Cloudy liquid 10 No No Cloudy liquid 11 No No Cloudy liquid 12 No No Cloudy liquid 13 No No Cloudy liquid 14 No No Cloudy liquid 15 Yes No Unstable, disappears after 1 day 16 No Yes Fine and soft white pearlescence

[0144] According to Table 7 and Figure 1 - Figure 5 As shown, the composition of the present invention has no polar light appearance, but when added to transparent products (including cosmetics and skin care products), the composition of the present invention can make the transparent products produce a polar light appearance, with rich and colorful polar light colors, controllable main polar light tones, and good stability.

[0145] According to Table 7, it can be seen from the compositions obtained in Comparative Examples 9-16 and their effects when added to transparent products that polyglyceryl-2 laurate, propylene glycol laurate, anionic surfactants, and polyols cannot obtain a stable composition that can make transparent products (cosmetics / skin care products) produce a polar light appearance if any one or more of them are missing.

[0146] (III) Moisture retention test

[0147] The polar light appearance transparent cosmetic obtained in Example 8 was used as lotion A for moisture retention test, with a blank as the control. No product was applied in the blank control.

[0148] The test was designed according to the "Evaluation Guide for Cosmetic Moisturizing Efficacy" QB / T4256-2011, based on the capacitance measurement of electrolytes. A skin stratum corneum moisture meter was used, and 25 healthy subjects who were not pregnant, breastfeeding, or in the gestational period were recruited to participate in this experiment; the inner side of the forearm was selected as the test site, the test area was 2.5*4 cm2, and the interval between the front and back areas was 2 cm, and they were randomly assigned in a double-blind manner; under constant temperature and humidity conditions, the human skin stratum corneum moisture content before product use, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours after use was measured respectively, as shown in Table 9.

[0149] Table 9

[0150]

[0151] The p value is a statistical hypothesis value, which is calculated by spass software. Spass is a commonly used statistical software. If the p value is less than the significance level (such as 0.05), the original hypothesis is rejected and the result is considered significant. Therefore, when the spass software shows that the p value (vs. the base value) < 0.001, it indicates a significant difference, so there is a moisturizing effect; when the spass software shows that the p value (vs. the blank control) is 0.000, it indicates a significant difference, so there is a moisturizing effect.

[0152] As can be seen from Table 8, compared with the blank control, the moisture content of the skin of the polar light appearance liquid crystal lotion obtained in Example 8 is significantly higher than that of the blank control, so this composition has a moisturizing effect.

[0153] In summary, the composition obtained by the present invention can endow transparent skin care products (cosmetics / skin care products) with an aurora appearance, which is novel in appearance, rich and colorful in aurora colors, the main aurora color of the aurora appearance is controllable, and it has good stability.

[0154] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A composition capable of imparting an aurora appearance to transparent skin care products; the composition comprises: Polyglycerol-2 laurate, propylene glycol laurate, anionic surfactant, polyol; wherein: Polyglycerol-2 laurate: 3 - 40 parts by weight, preferably 5 - 35 parts by weight; Propylene glycol laurate: 2 - 25 parts by weight, preferably 3 - 20 parts by weight; Anionic surfactant: 0.01 - 7 parts by weight, preferably 0.02 - 5 parts by weight; Polyol: 3 - 55 parts by weight, preferably 5 - 50 parts by weight.

2. The composition capable of imparting an aurora appearance to transparent skin care products according to claim 1, characterized in that, The composition further includes water; preferably, water is 3 - 65 parts by weight; preferably 5 - 62 parts by weight.

3. The composition capable of endowing transparent skin care products with an aurora appearance according to claim 1, characterized in that, The polyol is selected from the group consisting of: 1,3 - propanediol, butanediol, glycerol, propylene glycol, dipropylene glycol, methyl propylene glycol, 1,2 - pentanediol, 1,2 - hexanediol, sorbitol, glycerol polyether - 26, or a combination thereof; and / or The anionic surfactant is selected from the group consisting of: sodium bis(lauramidoglutamyl)lysinate, subtilisin - type lipopeptide, potassium coco - hydrolyzed oat protein, or a combination thereof.

4. A method for preparing a composition capable of imparting an aurora appearance to transparent skin-like products, comprising: Mix polyglycerol-2 laurate, propylene glycol laurate, anionic surfactant and polyol; wherein: Polyglycerol-2 laurate: 3 - 40 parts by weight, preferably 5 - 35 parts by weight; Propylene glycol laurate: 2 - 25 parts by weight, preferably 3 - 20 parts by weight; Anionic surfactant: 0.01 - 7 parts by weight, preferably 0.02 - 5 parts by weight; Polyol: 3 - 55 parts by weight, preferably 5 - 50 parts by weight; Preferably, the polyglycerol-2 laurate, propylene glycol laurate, anionic surfactant, polyol are mixed in water; more preferably, water is 3 - 65 parts by weight; preferably 5 - 62 parts by weight; Preferably, the method includes: A: Add polyglycerol-2 laurate, propylene glycol laurate, polyol into a stirring pot, stir and disperse evenly at 300 - 800 rpm, stir and heat to 70 - 85 °C; B: Continuously add the anionic surfactant and a small amount of deionized water into an auxiliary pot, stir and mix evenly at 300 - 800 rpm, stir and heat to 70 - 85 °C until completely dissolved and mixed evenly; C: Add the product of step B into the stirring pot, keep the temperature at 70 - 85 °C, stir at 1000 - 2000 rpm for 3 - 15 minutes; D: Stir and cool down to 25 - 30 °C at 300 - 800 rpm, discharge to obtain a composition that can give a transparent skin care product an aurora appearance.

5. Use of the composition according to any one of claims 1 - 3 in the preparation of a transparent skin care product having an aurora appearance.

6. A transparent skin-like article with an aurora appearance, comprising: The composition according to any one of claims 1 - 3 and a transparent skin care product.

7. The transparent skin-like article with an aurora appearance according to claim 6, wherein The transparent skin care product includes: transparent aqueous solution, transparent essence, transparent gel; Preferably, the proportion of the composition capable of giving a transparent skin care product an aurora appearance in the transparent skin care product with an aurora appearance is 2 - 30% by weight, preferably 3 - 25%, more preferably 3 - 20%.

8. The transparent skin care product having an aurora appearance according to claim 6, characterized in that The transparent aqueous solution includes: a pH buffer, water and optional functional ingredients; The transparent essence includes: carbomer, a pH regulator, water, and optional functional ingredients; The transparent gel includes: carbomer, a pH regulator, water, and optional functional ingredients; Preferably, the functional ingredients include: preservative ingredients such as hydroxyacetophenone and phenoxyethanol.

9. A method for preparing a transparent skin-like product with an aurora appearance, comprising: Mix the composition according to any one of claims 1-3 with the transparent skin care product.

10. A package, which includes: A container, and the composition according to any one of claims 1-3 contained in the container, the composition being used to give the transparent skin care product an aurora appearance; Or A container, and the transparent skin care product with an aurora appearance according to any one of claims 4-8 contained in the container.

Images