Stable color-changeable transparent lip oil as well as preparation method and application thereof

Abstract

The invention relates to stable color-changeable transparent lip oil and a preparation method and application thereof.The lip oil is prepared from, by weight, 85%-95% of emollient, 2%-6% of humectant, 4%-8% of thickener, 0.01%-0.2% of coloring agent, 0.01%-0.02% of pH regulator and the like, and the emollient is composed of a first combination, a second combination and a third combination. The product which is transparent in system, stable, free of precipitation and layering and excellent in moistening, lip protecting and skin feeling is prepared by screening formula raw materials, designing an emollient composition and matching with a coloring agent and further limiting preparation process conditions.

Description

Technical Field

[0001] The invention relates to the field of cosmetics, in particular to a stable color-changing transparent lip oil and a preparation method and application thereof. Background Art

[0002] As the demand for beauty products gradually increases, market demand has gradually become segmented and diversified. The lip product market has great potential. Currently, most of the colored lip products on the market are paste-like products. Transparent and colorless lip products are more visually attractive and can bring consumers a more pleasant user experience.

[0003] It is difficult to dissolve the color powder used in lip products to a transparent state using the currently common oils and dissolving processes. It often fails to dissolve, or precipitates at room temperature after being dissolved at high temperature, making it impossible to achieve a stable transparent lip oil state. Summary of the invention

[0004] In view of the deficiencies of the above-mentioned prior art, the present invention selects specific oils and color powders to dissolve at high temperature, adds a certain amount of stabilizer, and other emollient ingredients to obtain a stable, transparent lip balm with excellent skin feel.

[0005] The specific technical scheme of the present invention is as follows: A first aspect of the present invention provides a stable color-changing transparent lip oil, which comprises, by weight percentage, 85-95% of an emollient, 2-6% of a humectant, 4-8% of a thickener, 0.01-0.2% of a colorant, and 0.01-0.03% of a pH adjuster.

[0006] The emollient consists of combination 1, combination 2 and combination 3, wherein combination 1 consists of C12-15 alcohol benzoate, octyldodecanol and isostearic acid, combination 2 consists of at least one of caprylic / capric triglyceride, triethylhexanoin, isopropyl myristate, ethylhexyl palmitate and isopropyl isostearate; and combination 3 consists of hydrogenated polyisobutene, diisostearyl malate and tridecyl trimellitate.

[0007] The colorant is at least one of CI 45380, CI 45410 and CI 45370. CI 45380 and CI 45410 are good red colorants, and CI 45370 is an orange colorant; when used on the lips, it can bring corresponding lip color to the lips.

[0008] Emollient combination 1 can well disperse and dissolve the color powder until it is transparent, and help dissolve the stable color-changing color powder; combination 2 can also assist combination 1 in dissolving the color powder. By dissolving the color powder in combination with a specific oil composition, assisted by a certain amount of thickener and other emollient ingredients, a stable, transparent lip balm with excellent skin feel can be obtained.

[0009] Preferably, according to the weight percentage of the total raw materials of the lip oil, the content of each component of the combination 1 is: 1-4% C12-15 alcohol benzoate, 0.1-2% octyldodecanol, and 0.01-0.2% isostearic acid; the content of the combination 2 is 20-30%; the content of each component of the combination 3 is: 45-55% hydrogenated polyisobutene, 5-12% diisostearyl malate, and 3-8% tridecyl trimellitate.

[0010] The moisturizer can bring a moisturizing feeling to the lip balm. Preferably, the moisturizer is two or more of perilla seed oil, meadowfoam seed oil, sea buckthorn seed oil, milk thistle seed oil, flatwood oil, sunflower seed oil, frankincense resin extract, grape seed oil, olive fruit oil, jojoba seed oil, tocopherol, linoleic acid, menthol, glyceryl caprylate, and squalane.

[0011] Preferably, the thickener is a hydrogenated (styrene / isoprene) copolymer.

[0012] Preferably, the pH adjuster is anhydrous citric acid.

[0013] Furthermore, the stable color-changing transparent lip gloss formula of the present invention also contains 0.1-0.5% preservative. Preferably, the preservative is one or both of caprylyl glycol and ethylhexylglycerin.

[0014] In addition, essence can be added to the formula of the stable color-changing transparent lip oil of the present invention, and commonly used daily chemical essence can be selected, and the added amount is 0.1-0.5%.

[0015] Another aspect of the present invention further provides a method for preparing the stable color-changing transparent lip gloss, comprising the steps of: S1 Take the thickener and combination 3, pre-stir and disperse them evenly at room temperature and soak them for 12-24 hours, take them out and grind them on a three-roll grinder for 2-4 times for use; S2: Mix combination 1, combination 2 and colorant and heat to 150-180°C to dissolve until transparent. Cool to room temperature and filter for later use. S3 Heat the preservative and pH adjuster to 110-130°C and dissolve until transparent, then filter and set aside; S4: Heat the processed ingredients in S1 to 90-100°C, stir and dissolve, then add the dissolved ingredients obtained in steps S2 and S3, continue stirring and start cooling, then add moisturizer, stir evenly, cool to 60°C, filter and discharge.

[0016] Preferably, in step S2, the heating temperature of combination 1, combination 2 and colorant mixing is 160-180°C.

[0017] Another aspect of the present invention also provides the use of the lip gloss or the lip gloss prepared by the above preparation method as a raw material in preparing lip care cosmetics. The lip care cosmetics can be lipstick, lipstick and the like.

[0018] The beneficial effects of the present invention are: This product is formulated by screening raw materials, designing a combination of emollients and colorants (color powders), and further, by limiting the preparation process conditions, the difficult-to-stabilize color-changing color powder system is prepared into a product with a transparent system, stable without precipitation or stratification, and excellent moisturizing and lip care feel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the stability test results of the samples of the embodiments of the present invention and the comparative examples under light conditions; Figure 2 It is a schematic diagram of the stability test results of the samples of the embodiments of the present invention and the comparative examples at 5°C; Figure 3 It is a schematic diagram of the stability test results of the samples of the embodiments of the present invention and the comparative examples at 25°C; Figure 4 It is a schematic diagram of the stability test results of the samples of the embodiments of the present invention and the comparative examples at 50°C. DETAILED DESCRIPTION

[0020] 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.

[0021] Unless otherwise specified, the reagents and materials used in the following examples are commercially available.

[0022] Example 1 A stable color-changing transparent lip oil, comprising an emollient, a humectant, a thickener, a colorant, a pH regulator, a preservative, and a flavor, wherein the emollient is composed of combination 1, combination 2, and combination 3. Specifically, the components and their weight percentage contents are as follows: Combination 1: C12-15 alcohol benzoate 3%, octyldodecanol 1.5%, isostearic acid 0.1%; Combination 2: Caprylic / capric triglyceride 23%; Combination 3: Hydrogenated polyisobutene 50.03%, diisostearyl malate 8%, tridecyl trimellitate 5%; Moisturizer: Limnanthes alba seed oil 1%, Perilla seed oil 0.8%, Sea buckthorn seed oil 0.1%, Milk thistle seed oil 0.1%, Flatwood oil 0.1%, Sunflower seed oil 0.1%, Frankincense resin extract 0.05%, Grape seed oil 0.2%, Olive oil 0.2%, Jojoba seed oil 0.2%, Menthol 0.05%; Thickener: Hydrogenated (styrene / isoprene) copolymer 6%, Colorant: CI 45380 0.15%, Preservative: Caprylyl Glycol 0.1%, pH adjuster: citric acid 0.02%, Fragrance 0.2%.

[0023] The preparation process is as follows: S1: Mixture 3 and thickener hydrogenated (styrene / isoprene) copolymer, pre-stir and disperse them uniformly at room temperature and soak them for 18 hours. Take them out and grind them on a three-roll mill for 3 times before use.

[0024] S2: Mix combination 1, combination 2 and CI 45380 and heat to 170℃ until dissolved and transparent. After cooling to room temperature, filter with a filter and set aside.

[0025] S3 Take caprylyl glycol and citric acid, heat to 120℃ and dissolve until transparent, then filter with a filter and set aside.

[0026] S4 takes the processed combination 3 and thickener, heats to 95°C, stirs to dissolve, then adds the dissolved ingredients of S2 and S3, then adds the moisturizer and other remaining ingredients, stirs evenly, then cools to 60°C, filters out the material, and obtains the product.

[0027] Example 2 A stable color-changing transparent lip oil, comprising an emollient, a humectant, a thickener, a colorant, a pH regulator, a preservative, and a flavor, wherein the emollient is composed of combination 1, combination 2, and combination 3. Specifically, the components and their weight percentage contents are as follows: Combination 1: C12-15 alcohol benzoate 1%, octyldodecanol 0.2%, isostearic acid 0.01%; Combination 2: 30% tri(ethylhexanoin); Combination 3: Hydrogenated polyisobutene 45.46%, diisostearyl malate 12%, tridecyl trimellitate 3%; Moisturizer: squalane 0.5%, white meadowfoam seed oil 0.5%, grape seed oil 1%, olive fruit oil 0.5%, menthol 0.2%, tocopherol 0.1%, linoleic acid 0.01%, glyceryl caprylate 0.1%; Thickener: Hydrogenated (styrene / isoprene) copolymer 4%, Colorant: CI45410 0.01%, Preservative: Caprylyl Glycol 0.5%, pH adjuster: citric acid 0.01%, Fragrance 0.4%.

[0028] The preparation process is as follows: S1: Mixture 3 and thickener hydrogenated (styrene / isoprene) copolymer are pre-stirred and dispersed uniformly at room temperature and soaked for 18 hours. Take out and grind twice on a three-roll mill for use.

[0029] S2: Mix combination 1, combination 2 and CI 45410 and heat to 150℃ to dissolve until transparent. After cooling to room temperature, filter with a filter and set aside.

[0030] S3 Take caprylyl glycol and citric acid, heat to 110℃ and dissolve until transparent, then filter with a filter and set aside.

[0031] S4 takes the processed combination 3 and thickener, heats to 90°C, stirs to dissolve, then adds the dissolved components of S2 and S3, then adds the moisturizer and other remaining ingredients, stirs evenly, then cools to 60°C, filters out the material, and obtains the product.

[0032] Example 3 A stable color-changing transparent lip oil, comprising an emollient, a humectant, a thickener, a colorant, a pH regulator, a preservative, and a flavor, wherein the emollient is composed of combination 1, combination 2, and combination 3. Specifically, the components and their weight percentage contents are as follows: Combination 1: C12-15 alcohol benzoate 4%, octyldodecanol 2%, isostearic acid 0.2%; Combination 2: isopropyl isostearate 20%; Combination 3: Hydrogenated polyisobutene 53.37%, diisostearyl malate 5%, tridecyl trimellitate 6%; Moisturizer: squalane 0.5%, perilla seed oil 1%, meadowfoam seed oil 0.2%, grape seed oil 0.3%; Thickener: Hydrogenated (styrene / isoprene) copolymer 7%, Colorant: CI45370 0.2%, Preservative: Caprylyl Glycol 0.1%, pH adjuster: citric acid 0.03%, Fragrance 0.1%.

[0033] The preparation process is as follows: S1: Mixture 3 and thickener hydrogenated (styrene / isoprene) copolymer are pre-stirred and dispersed uniformly at room temperature and soaked for 24 hours. Take out and grind on a three-roll mill for 4 times before use.

[0034] S2: Mix combination 1, combination 2 and CI 45370 and heat to 180℃ to dissolve until transparent. After cooling to room temperature, filter with a filter and set aside.

[0035] S3 Take caprylyl glycol and citric acid, heat to 110℃ and dissolve until transparent, then filter with a filter and set aside.

[0036] S4 takes the processed combination 3 and thickener, heats to 100°C, stirs to dissolve, then adds the dissolved components of S2 and S3, then adds the moisturizer and other remaining ingredients, stirs evenly, then cools to 60°C, filters out the material, and obtains the product.

[0037] Comparative Example 1: The same as Example 1, except that the content of hydrogenated polyisobutene is increased by 10%, i.e., 60.03%, the content of caprylic / capric triglyceride is decreased by a corresponding amount, to 13%, and the contents of other components remain unchanged.

[0038] Comparative Example 2: Same as Example 1, except that emollient combination 1 is replaced by caprylic / capric triglyceride.

[0039] Comparative Example 3: The same as Example 1, except that the preparation process S1 is changed to: the combination 3 and the thickener hydrogenated (styrene / isoprene) copolymer are pre-stirred and dispersed uniformly at room temperature and soaked for 24 hours before use.

[0040] Comparative Example 4: The same as Example 1, except that the preparation process S1 is changed to: the combination 3 and the thickener hydrogenated (styrene / isoprene) copolymer are stirred and dispersed uniformly at room temperature, and then directly ground on a three-roll grinder for three times before use.

[0041] Comparative Example 5: The same as Example 1, except that the preparation process S2 is changed to: mix combination 1, combination 2, and CI 45380, heat to 120° C. to dissolve, cool to room temperature, filter with a filter and set aside.

[0042] Comparative Example 6: Same as Example 1, except that the preparation process S3 is changed to: take caprylyl glycol and citric acid, heat them to 80° C., filter them with a filter and set them aside.

[0043] Performance Test: 1. Stability test The products obtained in Examples 1 to 3 and Comparative Examples 1 to 6 were placed in an environment of light, 5°C, 25°C, and 50°C for 90 days to observe whether the products showed delamination, discoloration, precipitation, and other unstable phenomena. The results are shown in Table 1. Figure 1-4The effect diagrams of various embodiments and comparative examples under different conditions after being placed for 90 days are also shown. Since the soft particles in comparative examples 3 and 4 are relatively transparent, the effect of the pictures after taking pictures is not obvious, but the precipitation of soft particles can be clearly seen by naked eye observation.

[0044] Table 1 Stability test results

[0045] From the stability results, Examples 1-3 have good stability under various temperature conditions, while after changing the combination of thickener and emollient, or changing the corresponding process conditions, Comparative Examples 1-6 all show varying degrees of instability, indicating that a more stable lip oil product can be prepared by using the selected combination of the embodiments of the present invention in combination with the limitation of the preparation process conditions.

[0046] 2. User experience test 20 volunteers (female, aged 20-45 years) were selected to test the use effects of Examples 1-3. The test subjects were required to have non-sensitive skin, non-sensitive skin and no skin diseases, and no other lip skin care products were used on the lips during the test. The uniform lip oil packaging material and brush head were used, and the test subjects observed and evaluated the moisturizing effect, color change effect, makeup lasting effect, and overall effect of the products after using them for 10 minutes, 1 hour, and 4 hours.

[0047] The evaluation criteria are based on a 1-7 point system, with higher scores representing higher effects. The results are the average scores of all volunteers, and the specific score results are shown in Table 2 below.

[0048] Table 2 User experience results

[0049] It can be seen from the above evaluation results that the lip oil product of the embodiment of the present invention has an excellent user experience and can well meet the needs of users for moisturizing lips and keeping makeup.

[0050] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not 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. 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, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A stable color-changing transparent lip lacquer, characterized in that: According to weight percentage, it contains emollient 85-95%, moisturizer: 2-6%, thickener 4-8%, colorant 0.01-0.2%, pH adjuster 0.01-0.03%, The emollients consist of combination 1, combination 2 and combination 3, The combination 1 is composed of C12-15 alcohol benzoate, octyldodecanol, and isostearic acid. Combination 2 is at least one of caprylic / capric triglyceride, triethylhexanoin, isopropyl myristate, ethylhexyl palmitate, and isopropyl isostearate; Combination 3 consists of hydrogenated polyisobutene, diisostearyl malate, and tridecyl trimellitate; The colorant is at least one of CI 45380, CI45410, and CI45370.

2. The stable color-changing transparent lip lacquer according to claim 1, characterized in that: According to the weight percentage of the total raw materials of the lip oil, the contents of the components of the combination 1 are: 1-4% C12-15 alcohol benzoate, 0.1-2% octyl dodecanol, and 0.01-0.2% isostearic acid; The content of combination 2 is 20-30%; The contents of the components in combination 3 are: 45-55% hydrogenated polyisobutene, 5-12% diisostearyl malate, and 3-8% tridecyl trimellitate.

3. The stable color-changing transparent lip lacquer according to claim 1, characterized in that: The moisturizer is two or more of perilla seed oil, meadowfoam seed oil, sea buckthorn seed oil, milk thistle seed oil, silybum marianum oil, sunflower seed oil, frankincense resin extract, grape seed oil, olive oil, jojoba seed oil, tocopherol, linoleic acid, menthol, glyceryl caprylate, and squalane.

4. The stable color-changing transparent lip gloss according to claim 1, characterized in that: The thickener is a hydrogenated (styrene / isoprene) copolymer.

5. The stable color-changing transparent lip lacquer according to claim 1, characterized in that: The pH adjuster is anhydrous citric acid.

6. The stable color-changing transparent lip gloss according to claim 1, characterized in that: Also contains 0.1-0.5% preservative.

7. The stable color-changing transparent lip gloss according to claim 6, characterized in that: The preservative is one or both of caprylyl glycol and ethylhexylglycerin.

8. The method for preparing the stable color-changing transparent lip gloss according to any one of claims 1 to 7, characterized in that: Includes steps: S1 Take the thickener and combination 3, pre-stir and disperse them evenly at room temperature and soak them for 12-24 hours, take them out and grind them on a three-roll grinder for 2-4 times for use; S2: Mix combination 1, combination 2 and colorant and heat at 150-180°C until dissolved and transparent. After cooling to room temperature, filter and set aside; S3 Heat the preservative and pH adjuster to 110-130°C and dissolve until transparent, then filter and set aside; S4: Heat the ingredients in S1 to 90-100°C, stir and dissolve, then add the dissolved ingredients obtained in steps S2 and S3, continue stirring and start cooling, then add the moisturizer, stir evenly, cool to 60°C, filter and discharge.

9. The method for preparing the stable color-changing transparent lip gloss according to claim 8, characterized in that: In step S2, the temperature of heating the combination 1, combination 2 and colorant mixture is 160-180°C.

10. Use of the lip gloss according to any one of claims 1 to 7 or the lip gloss prepared by the preparation method according to any one of claims 8 to 9 as a raw material in the preparation of lip care cosmetics.

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