Use of humectants to increase the viscosity of water-in-silicon compositions

Abstract

The application relates to the cosmetic technical field and discloses application of a moisturizing agent in improving the viscosity of a water-in-silicone composition. In the technical scheme provided by the application, a moisturizing agent for improving the viscosity of a composition is added to the water-in-silicone composition, the moisturizing agent can adjust the solubility of an emulsifier in an inner phase and an outer phase, the emulsifier is better distributed on an interface, the viscosity of the water-in-silicone formula is improved, and the technical problem that the addition of polar grease into the water-in-silicone system causes the viscosity of the formula to decrease is solved. Meanwhile, in the application, the addition of the moisturizing agent for improving the viscosity of the composition does not affect the mildness and skin feel of the water-in-silicone system, and the formula cost is not obviously increased.

Description

Technical Field

[0001] This invention relates to the field of cosmetic technology, and in particular to the use of moisturizers in increasing the viscosity of silicone oil-in-water compositions. Background Technology

[0002] Silicone-in-water emulsions are a common dosage form in cosmetics. They offer better occlusion than water-in-oil emulsions and are more breathable and comfortable than simple oil-in-water emulsions, making them popular in the cosmetics industry. However, silicone oils have lower polarity than plant oils. The applicant discovered that silicone-in-water emulsions and plant oils are incompatible; the addition of plant oils to a silicone-in-water emulsion results in a decrease in viscosity. Viscosity is a crucial indicator of the stability of water-in-oil emulsion cosmetics, determining the quality of the product. High-viscosity formulations can provide a pleasant texture during initial application and a melting sensation due to shear thinning. Unfortunately, adding plant oils to a silicone-in-water emulsion causes a decrease in viscosity, leading to issues ranging from a loss of texture and melting sensation to more serious problems such as emulsion breakage and layering.

[0003] While the viscosity of silicone oil-in-water formulations can be achieved by increasing the emulsifier and / or thickener content, this results in a decrease in formulation mildness, a significant deterioration in skin feel, and a significant increase in formulation costs. Therefore, alternative methods are needed to address this issue. Summary of the Invention

[0004] The purpose of this invention is to provide the application of a moisturizer in increasing the viscosity of a silicone oil-in-water composition, a silicone oil-in-water composition, and a cosmetic.

[0005] A first aspect of the present invention provides the use of a humectant in increasing the viscosity of a water-in-silicone composition, said water-in-silicone composition being a formulation comprising, in which the external phase comprises polydimethylsiloxane and cyclodimethylsiloxane, and is supplemented with organosilicon; and said water-in-silicone composition comprises a polar oil, said polar oil comprising 0.3-5% by mass; said water-in-silicone composition further comprises a humectant selected from at least one of PEG-8, PEG-75M, PEG / PPG-14 / 7 dimethyl ether, glyceryl polyether-26, PPG-24-glyceryl polyether-24, dipropylene glycol, PPG-12-butanol polyether-16, PPG-28-butanol polyether-35, PEG / PPG-17 / 6 copolymer, diethoxyethyl succinate, and trimethylpentanediol / adipic acid / glyceryl crosspolymer; and said humectant comprising 1-5% by mass in said water-in-silicone composition.

[0006] Preferably, the polar oil is selected from at least one of dioctyl carbonate, C12-15 benzoate, caprylic / capric triglyceride, triglyceride (ethylhexanoate), cetyl ethylhexanoate, and vegetable oil. More preferably, the vegetable oil is selected from at least one of meadowfoam (Limenthanes alba) seed oil, carrot (Daucus CAROTA SATIVA) seed oil, and sunflower (Helianthus annuus) seed oil.

[0007] Preferably, the water-in-silicone composition comprises, by weight percentage: 13.2-18.3% cyclodimethylsiloxane; 1-5% polydimethylsiloxane; 2.5-3.1% emulsifier; 0-2% siloxane elastomer; 0-2% silica powder; 0.5% thickener; 0.1-0.5% preservative; 0.3-5% polar oil; 1-5% humectant; and water as the balance.

[0008] A second aspect of the present invention provides a silicone oil-in-water composition, comprising, by weight percentage: 13.2-18.3% cyclodimethylsiloxane; 1-5% polydimethylsiloxane; 2.5-3.1% emulsifier; 0-2% siloxane elastomer; 0-2% silica powder; 0.5% thickener; 0.1-0.5% preservative; 0.3-5% polar oil; 1-5% humectant; and water as the balance. The polar oil comprises at least one of dioctyl carbonate, C12-15 benzoate, caprylic / capric triglyceride, triglyceride (ethylhexanoate), cetyl ethylhexanoate, and vegetable oil; the moisturizer is selected from at least one of PEG-8, PEG-75M, PEG / PPG-14 / 7 dimethyl ether, glyceryl polyether-26, PPG-24-glyceryl polyether-24, dipropylene glycol, PPG-12-butanol polyether-16, PPG-28-butanol polyether-35, PEG / PPG-17 / 6 copolymer, diethoxyethyl succinate, and trimethylpentanediol / adipic acid / glyceryl crosspolymer.

[0009] A third aspect of the present invention provides a cosmetic comprising the silicone oil-in-water composition described in the second aspect of the present invention.

[0010] Preferably, the cosmetic provided by the present invention is applied to the outer surface of the skin.

[0011] Preferably, the cosmetic provided by the present invention is selected from one or more of the following: toner, eye cream, face cream, serum, and lotion.

[0012] Preferably, in the cosmetic provided by the present invention, the silicone oil-in-water composition is dispersed as an additive in the matrix raw material, wherein the matrix raw material is selected from one or more of oily raw materials, powdery raw materials, gel-like raw materials, and solvent raw materials.

[0013] Preferably, the cosmetic provided by the present invention further includes one or more of the following: surfactants, fragrances, pigments, moisturizers, preservatives, antioxidants, ultraviolet absorbers, chelating agents, astringents, penetration enhancers, and nutritional additives.

[0014] Compared with the prior art, the present invention provides the application of moisturizers in increasing the viscosity of silicone oil-in-water compositions, a silicone oil-in-water composition and cosmetics, and solves the technical problem of low viscosity in silicone oil-in-water composition formulations containing polar oils.

[0015] The silicone oil-in-water formulation of this application possesses better sealing properties than the water-in-oil formulation and is more breathable and comfortable than a simple oil-in-water formulation. However, when the applicant intended to use the silicone oil-in-water formulation in cosmetics in conjunction with polar oils (vegetable oils), it was discovered that the silicone oil-in-water system and polar oils exhibited incompatibility. Specifically, the addition of polar oils to the silicone oil-in-water system resulted in a decrease in formulation viscosity. Increasing the viscosity by increasing the emulsifier and / or thickener content resulted in a decrease in the formulation's gentleness, a significantly worse skin feel, and a significant increase in formulation cost.

[0016] In response, the applicant has provided a technical solution through unremitting exploration and innovation, which provides the application of humectants in increasing the viscosity of silicone oil-in-water compositions, and solves the technical problem of decreased formulation viscosity caused by the addition of vegetable oils to silicone oil-in-water systems. The silicone oil-in-water composition is a silicone oil-in-water formulation whose external phase comprises polydimethylsiloxane and cyclodimethylsiloxane, and is supplemented with organosilicon; and the silicone oil-in-water composition contains a polar oil, the polar oil comprising 0.3-5% by mass; the silicone oil-in-water composition further contains a humectant, the humectant being selected from at least one of PEG-8, PEG-75M, PEG / PPG-14 / 7 dimethyl ether, glyceryl polyether-26, PPG-24-glyceryl polyether-24, dipropylene glycol, PPG-12-butanol polyether-16, PPG-28-butanol polyether-35, PEG / PPG-17 / 6 copolymer, diethoxyethyl succinate, and trimethylpentanediol / adipic acid / glyceryl crosspolymer; and the humectant comprising 1-5% by mass in the silicone oil-in-water composition.

[0017] In the technical solution provided in this application, a humectant is added to the silicone oil-in-water composition to increase the viscosity of the composition. This humectant can adjust the solubility of the emulsifier in the internal and external phases, allowing the emulsifier to be better distributed at the interface, thereby increasing the viscosity of the silicone oil-in-water formulation and solving the technical problem of viscosity decrease caused by the addition of vegetable oil to the silicone oil-in-water system. Furthermore, in this application, the addition of the humectant to increase the viscosity of the composition does not affect the mildness and skin feel of the formulation, and does not significantly increase the formulation cost.

[0018] It is worth noting that moisturizers are cosmetic ingredients that can increase or retain moisture in the upper layer of the skin. These ingredients can retain moisture and remain on the skin surface, acting as skin conditioning agents, and therefore are not related to the viscosity of the formulation. Increasing formulation viscosity is often achieved by increasing the content of thickeners and / or emulsifiers, but this often results in negative skin feel, such as the stickiness caused by thickeners and emulsifiers, or reduced mildness, such as increased irritation from emulsifiers, or increased costs. In the technical solution provided in this application, the added moisturizer not only functions as a skin conditioning agent but also increases the viscosity of the silicone oil-in-water formulation, thereby solving the technical problem of decreased formulation viscosity caused by adding plant oils to the silicone oil-in-water system, without affecting the mildness and skin feel of the formulation, and without significantly increasing the formulation cost. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the various embodiments of this invention will be described in detail below. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this invention to facilitate a better understanding of this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0020] Experimental Example

[0021] All raw materials and reagents used in the experimental examples can be purchased through open commercial channels and are commonly used in this field. The operation of the instruments should be carried out in accordance with their instruction manuals.

[0022] I. Experimental Methods

[0023] 1. Preparation of silicone oil-in-water composition: After preparing the silicone oil-in-water composition system according to the conventional method, add polar oil and stir evenly; then add a humectant to increase the viscosity of the composition and homogenize at high speed for 5-10 minutes.

[0024] 2. The viscosity of the compositions in each experimental group was measured. The measuring instrument was a Brookfield DV2T viscometer. The measuring conditions were: room temperature, T-type rotor 93#, rotation speed 5 rpm, and time 1 minute.

[0025] II. Experimental Results

[0026] The grouping of each experimental group and the viscosity measurement results are shown in Table 1.

[0027] Table 1

[0028]

[0029]

[0030] The specific components and contents of each experimental group are shown in Tables 2 to 25:

[0031] Table 2 (Control Group 1)

[0032] Cyclopentadimethylsiloxane 18.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0033] Table 3 (Control Group 2)

[0034] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Meadowfoam (Limenthanes Alba) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0035] Table 4 (Control Group 3)

[0036] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Sunflower (Helianthus annuus) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0037] Table 5 (Control Group 4)

[0038] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Carrot (DAUCUS CAROTA SATIVA) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0039] Table 6 (Example 1)

[0040] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Meadowfoam (Limenthanes Alba) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / Diethoxyethyl succinate 1 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0041] Table 7 (Example 2)

[0042] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Sunflower (Helianthus annuus) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / Diethoxyethyl succinate 3 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0043] Table 8 (Example 3)

[0044] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Meadowfoam (Limenthanes Alba) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / PEG-8 1 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0045] Table 9 (Example 4)

[0046] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Carrot (DAUCUS CAROTA SATIVA) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / PEG-8 3 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0047] Table 10 (Example 5)

[0048] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Carrot (DAUCUS CAROTA SATIVA) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / PEG-75M 2 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0049] Table 11 (Example 6)

[0050] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Meadowfoam (Limenthanes Alba) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / PEG / PPG-14 / 7 dimethyl ether 1 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0051] Table 12 (Example 7)

[0052] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Sunflower (Helianthus annuus) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / PEG / PPG-14 / 7 dimethyl ether 3 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0053] Table 13 (Example 8)

[0054] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Meadowfoam (Limenthanes Alba) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / Glyceryl polyether-26 3 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0055] Table 14 (Example 9)

[0056] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Meadowfoam (Limenthanes Alba) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / PPG-12-Butyl alcohol polyether-16 3 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0057] Table 15 (Example 10)

[0058] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Sunflower (Helianthus annuus) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / PPG-28-Butyl alcohol polyether-35 3 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0059] Table 16 (Example 11)

[0060] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Meadowfoam (Limenthanes Alba) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / PEG / PPG-17 / 6 copolymer 3 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0061] Table 17 (Example 12)

[0062] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4 Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Carrot (DAUCUS CAROTA SATIVA) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / PPG-24-Glyceryl Polyether-24 3 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0063] Table 18 (Example 13)

[0064] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4％ Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Meadowfoam (Limenthanes Alba) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / dipropylene glycol 1 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0065] Table 19 (Example 14)

[0066] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4％ Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Sunflower (Helianthus annuus) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / dipropylene glycol 3 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0067] Table 20 (Example 15)

[0068] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4％ Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Meadowfoam (Limenthanes Alba) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / dipropylene glycol 5 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0069] Table 21 (Example 16)

[0070] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4％ Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Sunflower (Helianthus annuus) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / Trimethylpentanediol / adipic acid / glycerol crosspolymer 1 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0071] Table 22 (Example 17)

[0072] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4％ Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Meadowfoam (Limenthanes Alba) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / Trimethylpentanediol / adipic acid / glycerol crosspolymer 2 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0073] Table 23 (Comparison Group 1)

[0074] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4％ Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Carrot (DAUCUS CAROTA SATIVA) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / Diethoxyethyl succinate 6 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0075] Table 24 (Comparison Group 2)

[0076] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4％ Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Meadowfoam (Limenthanes Alba) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / glycerin 3 Moisturizer EDTA-2Na 0.1 preservative p-Hydroxyacetophenone 0.3 preservative

[0077] Table 25 (Comparison Group 3)

[0078] Cyclopentadimethylsiloxane 15.2 Cyclodimethylsiloxane polydimethylsiloxane 4％ Linear polydimethylsiloxane Polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer 1 Siloxane elastomers silicon dioxide 1 silicon powder Sunflower (Helianthus annuus) seed oil 3 polar oils Cetyl PEG / PPG-10 / 1 polydimethylsiloxane 3 emulsifier Distearate dimethylammonium lithium montmorillonite 0.5 Thickener Deionized water margin / glycerin 3 Moisturizer 1,3-Propanediol 2 Moisturizer EDTA-2Na, p-hydroxyacetophenone 0.1、0.3 preservative

[0079] The above experimental results show that adding polar vegetable oils to the silicone oil-in-water formulation resulted in incompatibility between the silicone oil-in-water system and the polar vegetable oils, leading to a decrease in the formulation viscosity. Further addition of a humectant to the formulation system to increase the viscosity of the composition allows the humectant to adjust the solubility of the emulsifier in both the internal and external phases, enabling better distribution of the emulsifier at the interface, thereby increasing the viscosity of the silicone oil-in-water formulation. The humectant used in this application to increase the viscosity of the silicone oil-in-water system is selected from at least one of PEG-8, PEG-75M, PEG / PPG-14 / 7 dimethyl ether, glyceryl polyether-26, PPG-24-glyceryl polyether-24, dipropylene glycol, PPG-12-butanol polyether-16, PPG-28-butanol polyether-35, PEG / PPG-17 / 6 copolymer, diethoxyethyl succinate, and trimethylpentanediol / adipic acid / glyceryl crosspolymer; and the humectant used to increase the viscosity of the composition accounts for 1 to 5% of the total mass of the silicone oil-in-water formulation and the polar oil, without affecting the mildness and skin feel of the formulation, and without significantly increasing the formulation cost.

[0080] The addition of humectants can increase the viscosity of a formulation without increasing the content of emulsifiers or thickeners. This is presumably because humectants affect the distribution of emulsifiers at the interface; humectants that increase viscosity should better facilitate the distribution of emulsifiers at the interface. Humectants that meet this requirement must have a certain degree of compatibility with the emulsifier; they cannot be completely compatible nor completely incompatible. Complete compatibility would result in more emulsifier distribution in the internal aqueous phase, while complete incompatibility would result in emulsifier distribution in the external silicone oil phase. As shown in the comparative examples, glycerol and 1,3-propanediol do not increase the viscosity of water-in-silicone formulations because glycerol has excessively good compatibility with the emulsifier, while 1,3-propanediol has excessively poor compatibility. Excessive amounts of diethoxyethyl succinate, being insoluble in water, lose their ability to regulate the distribution of emulsifiers at the interface, leading to a decrease in viscosity.

[0081] Based on the above experimental results, some embodiments of the present invention provide an application of a humectant in increasing the viscosity of a silicone oil-in-water composition. The silicone oil-in-water composition is a silicone oil-in-water formulation whose external phase comprises polydimethylsiloxane and cyclodimethylsiloxane, and is supplemented with organosilicon. The silicone oil-in-water composition contains a polar oil, the polar oil comprising 0.3-5% by mass. The silicone oil-in-water composition further contains a humectant selected from at least one of PEG-8, PEG-75M, PEG / PPG-14 / 7 dimethyl ether, glyceryl polyether-26, PPG-24-glyceryl polyether-24, dipropylene glycol, PPG-12-butanol polyether-16, PPG-28-butanol polyether-35, PEG / PPG-17 / 6 copolymer, diethoxyethyl succinate, and trimethylpentanediol / adipic acid / glyceryl crosspolymer. The humectant comprises 1-5% by mass in the silicone oil-in-water composition.

[0082] In some embodiments of the present invention, the polar oil is selected from at least one of dioctyl carbonate, C12-15 benzoate, caprylic / capric triglyceride, triglyceride (ethylhexanoate), cetyl ethylhexanoate, and vegetable oil. In some embodiments of the present invention, the vegetable oil is selected from at least one of meadowfoam (Limenthanes alba) seed oil, carrot (Daucus CAROTA SATIVA) seed oil, and sunflower (Helianthus annuus) seed oil.

[0083] In some embodiments of the present invention, the water-in-silicone composition comprises, by weight percentage: 13.2-18.3% cyclodimethylsiloxane; 1-5% polydimethylsiloxane; 2.5-3.1% emulsifier; 0-2% siloxane elastomer; 0-2% silica powder; 0.5% thickener; 0.1-0.5% preservative; 0.3-5% polar oil; 1-5% humectant; and water as the balance.

[0084] Some embodiments of the present invention also provide a silicone oil-in-water composition, comprising, by weight percentage: water: 58.6-81.6%; cyclodimethylsiloxane: 13.2-18.3%; polydimethylsiloxane: 1-5%; emulsifier: 2.5-3.1%; siloxane elastomer: 0-2%; silicone powder: 0-2%; thickener: 0.5%; preservative: 0.1-0.5%; polar oil: 0.3-5%; humectant: 1-5%; wherein the polar oil comprises dioctyl carbonate and C12-15 benzoyl alcohol. The humectant is selected from at least one of the following: ester, caprylic / capric triglyceride, triglyceride (ethylhexanoate), cetyl ethylhexanoate, and vegetable oil; the humectant is selected from at least one of PEG-8, PEG-75M, PEG / PPG-14 / 7 dimethyl ether, glyceryl polyether-26, PPG-24-glyceryl polyether-24, dipropylene glycol, PPG-12-butanol polyether-16, PPG-28-butanol polyether-35, PEG / PPG-17 / 6 copolymer, diethoxyethyl succinate, and trimethylpentanediol / adipic acid / glyceryl crosspolymer.

[0085] Some embodiments of the present invention also provide a cosmetic comprising a silicone oil-in-water composition, wherein, by weight percentage, the silicone oil-in-water composition comprises: cyclodimethylsiloxane: 13.2–18.3%; polydimethylsiloxane: 1–5%; emulsifier: 2.5–3.1%; siloxane elastomer: 0–2%; silicone powder: 0–2%; thickener: 0.5%; preservative: 0.1–0.5%; polar oil: 0.3–5%; moisturizer: 1–5%; and water: balance. The polar oil comprises at least one of dioctyl carbonate, C12-15 benzoate, caprylic / capric triglyceride, triglyceride (ethylhexanoate), cetyl ethylhexanoate, and vegetable oil; the moisturizer is selected from at least one of PEG-8, PEG-75M, PEG / PPG-14 / 7 dimethyl ether, glyceryl polyether-26, PPG-24-glyceryl polyether-24, dipropylene glycol, PPG-12-butanol polyether-16, PPG-28-butanol polyether-35, PEG / PPG-17 / 6 copolymer, diethoxyethyl succinate, and trimethylpentanediol / adipic acid / glyceryl crosspolymer.

[0086] In some embodiments of the present invention, the cosmetic is applied to the outer surface of the skin.

[0087] In some embodiments of the present invention, the cosmetic is selected from one or more of the following: toner, eye cream, face cream, serum, lotion, and facial mask essence.

[0088] In some embodiments of the present invention, in the cosmetic, the silicone oil-in-water composition containing polar oils is dispersed as an additive in a matrix raw material, wherein the matrix raw material is selected from one or more of oily raw materials, powdery raw materials, gel-like raw materials, and solvent raw materials.

[0089] In some embodiments of the present invention, the cosmetic further includes one or more of the following: surfactants, fragrances and flavorings, pigments, moisturizers, preservatives, antioxidants, ultraviolet absorbers, chelating agents, astringents, penetration enhancers, and nutritional additives.

[0090] In summary, in the embodiments of the present invention, by adding a moisturizer to the silicone oil-in-water formulation containing polar plant oils to increase the viscosity of the composition, the compatibility between polar plant oils and silicone oil-in-water formulations is improved, the technical problem of low viscosity of silicone oil-in-water composition formulations containing polar oils is solved, and the feasibility of using polar plant oils and silicone oil-in-water together in cosmetics is provided.

[0091] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. The application of a humectant in increasing the viscosity of a water-in-silicone oil composition, characterized in that: The silicone oil-in-water composition contains a polar oil, the polar oil comprising 0.3-5% by mass in the silicone oil-in-water composition; the silicone oil-in-water composition further comprises a humectant, the humectant being selected from PEG-8, PEG-75M, PEG / PPG-14 / 7 dimethyl ether, glyceryl polyether-26, PPG-24-glyceryl polyether-24, dipropylene glycol, PPG-12-butanol polyether-16, PPG-28-butanol polyether-35, PEG / PPG-1 The humectant comprises at least one of a 7 / 6 copolymer, diethoxyethyl succinate, and trimethylpentanediol / adipic acid / glycerol crosspolymer; and the humectant is present in the water-in-silicone composition at a mass percentage of 1-5%; the external phase of the water-in-silicone composition comprises polydimethylsiloxane and cyclodimethylsiloxane; and the polar oil is selected from at least one of dioctyl carbonate, C12-15 benzoate, caprylic / capric triglyceride, triglyceride (ethylhexanoate), cetyl ethylhexanoate, and vegetable oil.

2. The application according to claim 1, characterized in that, The water-in-silicone composition comprises, by weight percentage: 13.2-18.3% cyclodimethylsiloxane; Polydimethylsiloxane: 1~5%; Emulsifier: 2.5~3.1%; Siloxane elastomers: 0~2%; Silicon powder: 0~2%; Thickener: 0.5%; Preservative: 0.1~0.5%; Polar oil: 0.3~5%; Humectant: 1~5%; Water: Balance.

3. A silicone oil-in-water composition, characterized in that, The water-in-silicone composition comprises, by weight percentage: 13.2-18.3% cyclodimethylsiloxane; Polydimethylsiloxane: 1~5%; Emulsifier: 2.5~3.1%; Siloxane elastomers: 0~2%; Silicon powder: 0~2%; Thickener: 0.5%; Preservative: 0.1~0.5%; Polar oils: 0.3~5%; Moisturizer: 1~5%; Water: Balance; The polar oil comprises at least one of dioctyl carbonate, C12-15 benzoate, caprylic / capric triglyceride, triglyceride (ethylhexanoate), cetyl ethylhexanoate, and vegetable oil; The moisturizer is selected from at least one of PEG-8, PEG-75M, PEG / PPG-14 / 7 dimethyl ether, glyceryl polyether-26, PPG-24-glyceryl polyether-24, dipropylene glycol, PPG-12-butanol polyether-16, PPG-28-butanol polyether-35, PEG / PPG-17 / 6 copolymer, diethoxyethyl succinate, and trimethylpentanediol / adipic acid / glyceryl crosspolymer.

4. A cosmetic product, characterized in that, It comprises the silicone oil-in-water composition of claim 3.

5. The cosmetic product according to claim 4, characterized in that, The cosmetic is applied to the outer surface of the skin.

6. The cosmetic product according to claim 4, characterized in that, The cosmetics are selected from one or more of the following: toner, eye cream, face cream, serum, and lotion.

7. The cosmetic product according to claim 4, characterized in that, In the cosmetic, the silicone oil-in-water composition is dispersed as an additive in the matrix raw material, which is selected from one or more of oil-based raw materials, powder-based raw materials, gel-based raw materials, and solvent-based raw materials.

8. The cosmetic product according to claim 4, characterized in that, The cosmetics also include one or more of the following: surfactants, fragrances, pigments, moisturizers, preservatives, antioxidants, ultraviolet absorbers, chelating agents, astringents, penetration enhancers, and nutritional additives.

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