Fluorine-containing refreshing serum and film forming method thereof

Abstract

The present application belongs to the field of cosmetics, and relates to a kind of refreshing essence containing fluorine and a preparation method thereof.The essence includes the following mass percentage components: oil phase (0.01-15) %, fluorine-containing organic compound phase (1-15) % and water phase (80-90) %, wherein the water phase contains natural polymer and synthetic polymer and deionized water in remainder.Compared with the prior art, the present application uses high molecular polymer instead of emulsifier to disperse and stabilize oil, makes the essence material body uniform, avoids the sticky feeling and possible irritation caused by the use of emulsifier, and uses fluorine-containing organic compound instead of part of oil.Compared with the use of oil alone, the addition of fluorine-containing organic compound is equivalent to diluting the oil, reducing the amount of oil used, making the product more refreshing, and not losing the moisturizing feeling.

Description

Technical Field

[0001] This invention belongs to the field of cosmetics, and specifically provides a fluorine-containing refreshing essence that has a refreshing and moisturizing feel on the skin and a crystal clear appearance. Background Technology

[0002] Currently, the main types of serums on the market are transparent water-based serums and microemulsion serums. Transparent water-based serums typically use a high concentration of water-soluble moisturizing ingredients in their formula to achieve a hydrating effect, resulting in a refreshing feel and long-lasting moisturizing effect. Microemulsion serums generally contain both water-soluble and oil-soluble ingredients, with surfactants added to blend them. These serums generally offer both moisturizing and hydrating benefits, but they are usually slightly milky white. However, with the development of the cosmetics industry and the increasing demands of consumers for cosmetics, in addition to product efficacy and skin feel, there are also higher requirements for the visual appearance of cosmetics.

[0003] As we all know, water and oil generally do not mix; most oils, being less dense, float on the surface. Therefore, when water and oil are mixed, they separate into two phases: an aqueous phase and an oil phase. The aqueous phase is primarily moisturizing, while the oil phase is primarily lubricating. To combine the advantages of both, creating a product that moisturizes and smooths the skin, while also forming a protective film on the skin's surface to lock in moisture, providing softness, smoothness, and radiance, and acting as a lipid-replenishing agent to protect the skin, this product combines water and oil without adding emulsifiers. This unique appearance overcomes the challenge of water-oil instability and is not yet widely used in the cosmetics industry.

[0004] Current serums generally contain both an aqueous and an oil phase. Emulsifiers reduce interfacial tension, dispersing oil or water droplets into the continuous aqueous or oil phase, making the product homogeneous and easy to apply. However, excessive emulsifiers can result in a sticky feel, while insufficient emulsifiers can cause the emulsion to break down and separate, potentially leading to product quality issues. Cosmetics typically add medium-chain triglycerides, long-chain triglycerides such as plant oils, synthetic esters, and silicone oils. They require both a moisturizing feel and a refreshing feel; excessive or overly thick oils create a greasy and unpleasant sensation that is unacceptable to consumers.

[0005] Patent application CN201910244520.X discloses an essence with visually stable suspended colored oil droplets. This essence uses oily components diphenyl dimethylsiloxane (INCI: DIPHENYL DIMETHICONE, boiling point >140℃, density 1.09 g / ml at 20℃) and perfluorooctyltriethoxysilane (INCI: PERFLUOROOCTYLTRIETHOXYSILANE, boiling point 95℃, density 1.33 g / ml at 25℃). By adjusting the ratio of diphenyl dimethylsiloxane and perfluorooctyltriethoxysilane to adjust the oil-to-water ratio to approximate the specific gravity of the aqueous phase, the stability of the emulsion can be increased, preventing emulsion separation caused by oil-water mixing. However, the two oils have a relatively thick feel on the skin, a high boiling point, and are almost non-volatile at room temperature. After application to the skin, the evaporation of water results in a noticeable greasy and heavy feeling, making it difficult to achieve a refreshing skin feel. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects of the prior art and provide a refreshing fluoride-containing essence with reduced oil usage and good skin care effect, as well as its film-forming method and application.

[0007] The objective of this invention can be achieved through the following technical solution: a fluorinated refreshing essence, comprising the following components by mass percentage: oil phase (0.01-15)%, fluorinated organic compound phase (1-15)%, and aqueous phase (80-90)%.

[0008] The aqueous phase contains natural and synthetic polymers in a mass ratio of (0.05-0.1):(0.4-1.0), with the remainder being deionized water.

[0009] Furthermore, the natural polymer in the aqueous phase is one or more of xanthan gum, sodium hyaluronate, hydroxyethyl cellulose, and sodium alginate.

[0010] Furthermore, the natural polymer is xanthan gum and / or hydroxyethyl cellulose, and the amount of natural polymer added is 0.05-0.08% based on the total mass of the essence (100%).

[0011] The serum uses an oil phase of 0.01-15% and a fluorinated organic compound phase of 1-15% by mass as the dispersed phase, and an aqueous phase of 80-90% as the continuous phase. No emulsifiers are used for emulsification. The dispersed phase is stabilized by a certain proportion of xanthan gum and / or sodium hyaluronate and / or hydroxyethyl cellulose and / or sodium alginate with synthetic polymer acrylates / C10-30 alkyl acrylates.

[0012] Furthermore, the mass ratio of the natural polymer to the synthetic polymer is (0.05-0.1):(0.4-1.0).

[0013] Furthermore, the synthetic polymer in the aqueous phase is an acrylate / C10-30 alkyl acrylate crosspolymer, and the amount of synthetic polymer added is 0.4-0.7% based on the total mass of the essence.

[0014] The aqueous phase also contains basic cosmetic ingredients, including glycerin, butylene glycol, preservatives, and arginine. Based on 100% of the total serum mass, the composition includes glycerin (1-5)%, butylene glycol (1-5)%, 1,2-hexanediol (0.4-0.6)%, p-hydroxyacetophenone (0.4-0.6)%, and arginine (0.4-0.7)% required to neutralize the acrylate / C10-30 alkyl acrylate crosspolymer.

[0015] Furthermore, the mass ratio of the oil phase to the fluorinated organic compound is (1:1) to (1:2).

[0016] Furthermore, the oil phase is one or more of isododecane, isohexadecane, squalane, isopropyl palmitate, isooctyl palmitate, liquid shea butter, hydrogenated polyisobutylene, hydrogenated polydecene, and cyclopentamethoxysiloxane, and the specific gravity of the oil phase is less than 1.

[0017] The fluorinated organic compound phase is one or more of perfluorobutyl methyl ether, perfluorohexane, perfluoronaphthene, and perfluoroperhydrophenanthrene, which has a low boiling point, almost no oily feel, and is compatible with some cosmetic oils. It can be used as a diluent for oils and replace some oils. The specific gravity of the fluorinated organic compounds is greater than 1.

[0018] The optimal mass ratio of xanthan gum and / or sodium hyaluronate and / or hydroxyethyl cellulose and / or sodium alginate to acrylate / C10-30 alkyl acrylate crosspolymer is (0.05-0.1):(0.4-1.0). Xanthan gum and hydroxyethyl cellulose can be selected at a mass percentage of 0.05-0.08%, and the optimal mass percentage of acrylate / C10-30 alkyl acrylate crosspolymer is 0.4-0.7%, which can give the essence a certain fluidity.

[0019] The serum remains stable at 48℃ for 3 months without emulsification or stratification, and does not stratify after freezing at -18℃ and thawing.

[0020] A method for preparing a fluoride-containing refreshing serum includes the following steps:

[0021] (1) Add natural and synthetic polymers to deionized water and disperse them evenly and transparently to form an aqueous phase;

[0022] (2) Dissolve arginine in water, add it to the aqueous phase, and cool it to 20°C;

[0023] (3) Add the oil phase and the fluorine-containing organic compound phase to the aqueous phase obtained in step (2), stir and disperse evenly to obtain the fluorine-containing refreshing essence.

[0024] The stirring speed mentioned in step (3) is 500-1000 rpm.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] (1) In this invention, the dispersed phase consists of 0.01-15% oil phase and 1-15% fluorinated organic compound phase by mass percentage, with 80-90% aqueous phase as the continuous phase. No emulsifiers are used for emulsification. The dispersed phase is stabilized by a certain proportion of xanthan gum and / or sodium hyaluronate and / or hydroxyethyl cellulose and / or sodium alginate with acrylate / C10-30 alkyl acrylate crosslinking polymer. By using high molecular weight polymers instead of emulsifiers to disperse and stabilize the oils, the essence achieves uniformity, avoiding the stickiness and potential irritation caused by emulsifiers. Simultaneously, the use of fluorinated organic compounds to replace some of the oils dilutes the oils compared to using oils alone, reducing the amount of oil used. Due to their low boiling point, the fluorinated organic compounds evaporate and carry away heat from the skin surface, resulting in a particularly refreshing feeling. The non-volatile, refreshing oils increase moisturizing sensation and form an oil film on the skin surface, enhancing the moisturizing effect. Attached Figure Description

[0027] Figure 1 The appearance of the fluorine-containing refreshing essence in Example 2.

[0028] Figure 2 This is the statistical result of the skin feel evaluation score for Example 2.

[0029] Figure 3 The results of the skin feel evaluation scores for Comparative Example 2 are statistically analyzed. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that those skilled in the art can make various changes and modifications without departing from the concept of the present invention. These all fall within the scope of protection of the present invention.

[0031] The synthetic high molecular weight acrylate / C10-30 alkyl acrylate crosspolymer is Lubrizol's Pemulen. TM TR-1 polymer or Pemulen TM TR-2 polymer.

[0032] Examples 1-4 and Comparative Examples 1-2

[0033] Weigh the raw materials according to the mass percentage shown in Table 1.

[0034] Table 1. Raw material composition and dosage for each embodiment and comparative example:

[0035]

[0036]

[0037] Prepare according to the following steps;

[0038] (1) Add xanthan gum, hydroxyethyl cellulose and acrylate / C10-30 alkyl acrylate crosspolymer to glycerol and butanediol and disperse in deionized water. Then add 1,2-hexanediol and p-hydroxyacetophenone and stir and heat to 80°C until uniform and transparent. Cool to 45°C, dissolve arginine in water and add it. Cool to 20°C, mix the oil phase and fluorinated organic compounds evenly and add them. Stir at 500-1000 rpm to disperse evenly.

[0039] After placing Examples 1-4 and Comparative Examples 1-2 at a high temperature of 48°C for three months, Examples 1-4 did not show any stratification, while Comparative Examples 1-2 were divided into three layers: the upper layer was oil, the middle layer was an emulsion layer, and the lower layer was water.

[0040] The skin feel of the fluoride-containing refreshing essence of this invention was evaluated using a volunteer trial and rating method.

[0041] Experimental subjects:

[0042] A total of 32 volunteers aged 24-55 were selected, including 4 with dry skin, 8 with oily skin, 4 with normal skin, 10 with combination skin, and 6 with sensitive skin.

[0043] Experimental procedure:

[0044] Volunteers were divided into two groups of 16 each, using the serums from Example 2 and Comparative Example 2 respectively. Each group applied approximately 0.5ml to the face twice daily, morning and evening, for one week. Skin condition was observed, and a questionnaire was completed.

[0045] project 5 points 4 points 3 points 2 points 1 point refreshing feeling Excellent refreshing feeling The refreshing feeling is obvious. The refreshing feeling is average. Not refreshing Heavy Moisturizing feeling Excellent moisturizing effect The moisturizing effect is obvious. The moisturizing effect is average. Not moisturizing dry Moisturizing sensation Very moisturizing Noticeable moisturizing sensation The moisturizing effect is average. No moisturizing feeling Dry or oily Irritating Non-irritating Mild discomfort mild irritation The stinging pain was obvious. intense stinging

[0046] Note: A refreshing feeling means that the serum is easy to spread and absorbs quickly after application, leaving the skin feeling light and refreshed; a moisturizing feeling means that the skin's moisture and oil levels are balanced, and the skin feels soft and supple to the touch or when you feel it is not dry or dehydrated.

[0047] Experimental results:

[0048] The scoring results of Group 2 in Example Example are as follows Figure 2 The percentages of respondents who found the product to have excellent refreshing and moisturizing properties were 93.75% and 87.5%, respectively. 75% of respondents felt it had a noticeable moisturizing effect. All respondents felt it was non-irritating. The experimental results demonstrate that the sample in Example 2 has excellent refreshing and moisturizing properties, as well as good moisturizing effect, and is safe and non-irritating.

[0049] The scoring results of the two comparison groups are as follows: Figure 3 Of the respondents, 81.25% found Comparative Example 2 to be neither refreshing nor heavy, and 68.75% found it oily and lacking in moisturizing properties. One of these respondents experienced acne breakouts. This indicates that Comparative Example 2 does not offer a superior refreshing feel. Although its moisturizing effect is not significantly different from Example 2, the excessive oil content makes it feel heavy and burdensome on the skin, thus increasing the risk of acne.

[0050] Matters not covered in this invention are common knowledge.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A fluorinated, refreshing essence, characterized in that, This serum contains the following components by weight percentage: Cyclopentasiloxane 5%, isododecane 3%, hydrogenated polydecene 1%, perfluorobutyl methyl ether 8%, perfluorohexane 2%, glycerol 5%, butanediol 1%, xanthan gum 0.05%, hydroxyethyl cellulose 0.03%, acrylate / C10-30 alkyl acrylate crosspolymer 0.45%, 1,2-hexanediol 0.4%, p-hydroxyacetophenone 0.5%, arginine 0.45%, deionized water to 100%.

2. A method for preparing a fluorine-containing refreshing essence as described in claim 1, characterized in that, Includes the following steps: (1) Add xanthan gum, hydroxyethyl cellulose and acrylate / C10-30 alkyl acrylate crosspolymer to glycerol and butanediol and disperse in deionized water, then add 1,2-hexanediol and p-hydroxyacetophenone, stir and heat to 80°C until uniform and transparent, then cool to 45°C; (2) Dissolve arginine in water, add it to the aqueous phase obtained in step (1), stir until homogeneous, and cool to 20°C; (3) Add cyclopentadimethylsiloxane, isododecane, hydrogenated polydecene, perfluorobutyl methyl ether, and perfluorohexane to the aqueous phase obtained in step (2), stir and disperse evenly to obtain a refreshing essence containing fluorine.

3. The method for preparing the fluoride-containing refreshing essence according to claim 2, characterized in that, The stirring speed in step (3) is 500-1000 rpm.

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