Lip cosmetic composition comprising silicone-based film-forming agent and acrylate / silicone hybrid-based film-forming agent

Abstract

The present invention provides a lip cosmetic composition comprising a silicone-based film-forming agent, an acrylate / silicone hybrid-based film-forming agent, wax, oil, and a pigment. The present invention provides the lip cosmetic composition which has improved coloring power and formulation stability by means of a combination of the film-forming agents, and is free of transfer and feathering.

Description

A cosmetic composition for lips comprising a silicone-based film-forming agent and an acrylate / silicone hybrid-based film-forming agent.

[0001] The present invention relates to a cosmetic composition for lips comprising a silicone-based film-forming agent, an acrylate / silicone hybrid-type film-forming agent, a wax, an oil, and a pigment.

[0002] Cosmetic compositions for the lips play an important role in improving appearance and maintaining lip health. Since products utilizing lip cosmetic compositions are applied to the lips, which are a particularly sensitive area, they must possess pigment-fixing capabilities while protecting the lip skin.

[0003] Conventional lip cosmetic compositions have been developed by relying on wax-oil-based matrices to fix pigments to the lip surface. Products utilizing such compositions, which rely on wax-oil-based matrices, have faced problems such as reduced spreadability and lip dryness due to increased stickiness caused by excessively high polymer or wax content to achieve high coloring power and color retention. Furthermore, most silicone-based ingredients fail to block moisture evaporation, leading to issues where pigments do not penetrate the stratum corneum of the lips and easily detach from the surface. Moreover, because products using the aforementioned method rely solely on the physical capture of fine pigment particles, they suffer from weak coloring intensity, resulting in faded or smudging colors and difficulty in maintaining the desired color effect for an extended period.

[0004] To solve these problems, the inventors devised a cosmetic composition for lips that improves coloring power and durability by introducing a network structure formed by mutually complementary combination using a silicone-based film-forming agent and an acrylate / silicone hybrid-based film-forming agent.

[0005] [Prior Art Literature]

[0006] [Patent Literature]

[0007] Korean Registered Patent No. 10-2627442

[0008] The problem that the present invention aims to solve is to provide a lip cosmetic composition with strong fixation that maximizes coloring power and prevents smudging and bleeding by preparing the lip cosmetic composition through a combination of film-forming agents. In addition, it provides a lip cosmetic composition with improved applicability and spreadability while preventing lip dryness by inhibiting moisture evaporation.

[0009] To solve the above problem, the present invention provides a cosmetic composition for lips comprising a silicone-based film-forming agent, an acrylate / silicone hybrid-type film-forming agent, a wax, an oil, and a pigment.

[0010] According to the lip cosmetic composition comprising a silicone-based film-forming agent, an acrylate / silicone hybrid film-forming agent, a wax, an oil, and a pigment according to the present invention, the molecular-level bonding strength of the organic pigment is maximized by the combination of film-forming agents, thereby increasing coloring power without smudging or bleeding. In addition, it can exhibit the effect of improved usability due to high moisture retention and enhanced spreadability.

[0011] Figure 1 shows the results of confirming color retention when a lip cosmetic composition according to one embodiment of the present invention is applied to the skin immediately after one application, wiped with a tissue immediately after application, and wiped with a tissue 20 minutes after application.

[0012] Hereinafter, various embodiments of the present invention are described with reference to the accompanying drawings. The present invention is not limited to specific embodiments and should be understood to include various modifications, equivalents, and / or alternatives of the embodiments of the present invention. In relation to the description of the drawings, similar reference numerals may be used for similar components.

[0013] In this document, expressions such as "have," "can have," "include," or "can include" refer to the existence of the relevant feature (e.g., numerical values, functions, actions, or components, etc.) and do not exclude the existence of additional features.

[0014] In this document, expressions such as “A or B,” “at least one of A or / and B,” or “one or more of A or / and B” may include all possible combinations of items listed together. For example, “A or B,” “at least one of A and B,” or “at least one of A or B” may refer to cases including (1) at least one A, (2) at least one B, or (3) both at least one A and at least one B.

[0015] As used in this document, the expression "configured to" may be replaced, depending on the context, with, for example, "suitable for," "having the capacity to," "designed to," "adapted to," "made to," or "capable of." The term "configured to" does not necessarily mean "specifically designed to."

[0016] The terms used in this document are used merely to describe specific embodiments and are not intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as generally understood by those skilled in the art described in this document. Terms used in this document that are defined in general dictionaries may be interpreted as having the same or similar meaning as they have in the context of the relevant technology, and are not to be interpreted in an ideal or overly formal sense unless explicitly defined in this document. In some cases, even terms defined in this document may not be interpreted to exclude the embodiments of this document.

[0017] The embodiments disclosed in this document are presented for the purpose of explaining and understanding the disclosed technical content and are not intended to limit the scope of the invention. Accordingly, the scope of this document should be interpreted to include all modifications or various other embodiments based on the technical concept of the invention.

[0018] Hereinafter, preferred embodiments of the present invention will be described in detail. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0019] Therefore, it should be understood that the configurations of the embodiments described in this specification are merely some of the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and that various equivalents and modifications that can replace them may exist at the time of filing this application.

[0020] Throughout the specification, when a part is described as "including" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0021] The present invention will be described in detail below.

[0022]

[0023] According to one embodiment of the present invention, a cosmetic composition for lips is provided comprising a silicone-based film-forming agent, an acrylate / silicone hybrid-type film-forming agent, a wax, an oil, and a pigment. Each component is described in detail below.

[0024] The above silicone-based film-forming agent is a polymer material based on silicone compounds that forms a flexible and transparent film on the surface of the lips, providing functions such as pigment fixation, moisture retention, and improved durability.

[0025] The above silicone-based film-forming agent is Bis-C 16-18 Alkyl glyceryl undecyl dimethicone (Bis-C 16-18 alkyl glyceryl undecyl dimethicone), Dimethicone, Cyclomethicone, Cetyl Dimethicone, C 20-24 Olefin / oleyl alcohol copolymer (C 20-24 Olefin / Oleyl Alcohol Copolymer) and C 30-45 Alkyl dimethicone / polycyclohexanooxide crosspolymer (C 30-45 It may include one or more selected from the group consisting of Alkyl Dimethicone / Polycyclohexene Oxide Crosspolymer. Specifically, the silicone-based film-forming agent is the bis-C 16-18 Alkyl glyceryl undecyl dimethicone (Bis-C 16-18It can be alkyl glyceryl undecyl dimethicone.

[0026] The above Bis-C 16-18 Alkyl glyceryl undecyl dimethicone (Bis-C 16-18 Alkyl glyceryl undecyl dimethicone) can form an ultrathin film of 20 to 50 nm with a long-chain alkyl group and can flatten the lip surface by reducing lip surface roughness by more than 90%, thereby increasing the chemical bonding efficiency with acrylate / silicone hybrid film-forming agents. The flattening effect on the lip surface can improve pigment adhesion by allowing pigment particles to be evenly distributed. The above Bis-C 16-18 Alkyl glyceryl undecyl dimethicone (Bis-C 16-18 Alkyl glyceryl undecyl dimethicone) has an excellent effect in inhibiting moisture evaporation by forming a hydrophobic film. In addition, Bis-C 16-18 Alkyl glyceryl undecyl dimethicone (Bis-C 16-18 The hydrophobic film formed by alkyl glyceryl undecyl dimethicone has an excellent effect in inhibiting moisture evaporation and improves pigment retention by protecting the pigment from the external environment (e.g., friction or moisture). In addition, the formation of an ultra-thin film and hydrophobic properties allow the pigment to bind strongly to the lip surface, thereby maximizing coloring power.

[0027] The above-mentioned acrylate / silicon hybrid film-forming agent is formed through a radical polymerization reaction between vinyl-functionalized silicon and an acrylate monomer, or forms a graft copolymer through a condensation reaction in the presence of a catalyst between an acrylate monomer containing an alkoxysilyl functional group (-Si-OR) and a hydroxyl group (-OH) of a silicon resin. The silicon network structure incorporated in the above-mentioned acrylate / silicon hybrid film-forming agent physically captures organic pigments to strengthen intermolecular forces with the pigments, and can block moisture evaporation through the hydrophobic interactions of silicon. The acrylate / silicon hybrid film-forming agent has the effect of maximizing long-term color retention.

[0028] The above-mentioned film-forming agent of the acrylate / silicone hybrid series may include one or more selected from the group consisting of phenyl trimethicone*acrylates / dimethicone copolymer, silicone acrylate, acrylates / dimethicone copolymer, acrylates / dimethicone copolymer*isododecane, and acrylates / dimethicone copolymer*undecane*tridecane. Specifically, the film-forming agent of the acrylate / silicon hybrid series may be a phenyl trimethicone*acrylates / dimethicone copolymer, which may be a phenyl trimethicone (and) acrylates / dimethicone copolymer.

[0029] The aforementioned silicone-based film-forming agent and acrylate / silicone hybrid film-forming agent form a single integrated network structure through covalent grafting and enhance the durability of the film formed on the lip surface. The grafted network structure physically captures organic pigments and strengthens bonding forces through intermolecular forces (van der Waals forces), thereby having the effect of increasing color retention.

[0030] The content of the silicone-based film-forming agent may be 0.01 to 30 weight% based on the total weight of the cosmetic composition. Specifically, the content of the silicone-based film-forming agent may be 0.1 to 20 weight% based on the total weight of the cosmetic composition. More specifically, the content of the silicone-based film-forming agent may be 1 to 10 weight% based on the total weight of the cosmetic composition. If the content of the silicone-based film-forming agent is below the above numerical range, the film-forming ability decreases, making it impossible to form a sufficient film on the lip surface, and the pigment fixation and moisture retention effects are weakened, which may result in reduced coloring power. If the content of the silicone-based film-forming agent exceeds the above numerical range, there is a possibility of causing stickiness or stiffness on the lip surface, and the spreadability and absorption of the product may decrease.

[0031] The content of the above-mentioned acrylate / silicone hybrid film-forming agent may be 0.001 to 30 weight% based on the total weight of the cosmetic composition. Specifically, the content of the above-mentioned acrylate / silicone hybrid film-forming agent may be 0.01 to 20 weight% based on the total weight of the cosmetic composition. More specifically, the content of the above-mentioned acrylate / silicone hybrid film-forming agent may be 0.1 to 10 weight% based on the total weight of the cosmetic composition. If the content of the above-mentioned acrylate / silicone hybrid film-forming agent is below the above numerical range, the pigment capture ability is weakened, resulting in reduced color retention, and the binding force with organic pigments weakens, causing the pigment to easily detach from the lip surface. If the content of the above-mentioned acrylate / silicone hybrid film-forming agent exceeds the above numerical range, it abnormally increases the viscosity of the cosmetic composition, causing stickiness and a heavy sensation, thereby degrading the user experience. Additionally, as the network structure is excessively formed, the film becomes rigid, loses flexibility, and may crack or peel upon friction.

[0032] The weight ratio of the silicone-based film-forming agent and the acrylate / silicon hybrid film-forming agent may be 4:0.01 to 20. Specifically, the weight ratio of the silicone-based film-forming agent and the acrylate / silicon hybrid film-forming agent may be 4:0.1 to 10. More specifically, the weight ratio of the silicone-based film-forming agent and the acrylate / silicon hybrid film-forming agent may be 4:0.2 to 10. When the weight ratio of the silicone-based film-forming agent and the acrylate / silicon hybrid film-forming agent is within the above numerical range, the pigment fixing power and dispersibility are improved, and the pigment adhesion power is optimized, allowing the color retention rate to be maintained for a long time. If the above acrylate / silicone hybrid film-forming agent is below the above numerical range, it fails to provide a strong network structure, causing pigment loss due to external friction or moisture, which reduces color retention, and if it exceeds the above numerical range, spreadability decreases, resulting in stiffness or stickiness, and storage stability may decrease.

[0033] The above wax may include one or more selected from the group consisting of sunflower seed wax (Helianthus Annuus (Sunflower) Seed Wax), synthetic wax, candelilla wax (Euphorbia Cerifera (Candelilla) Wax), ethylene / propylene copolymer*synthetic wax, and microcrystalline wax (Cera Microcristallina), but is not limited thereto.

[0034] The content of the wax may be 0.1 to 50 weight% based on the total weight of the cosmetic composition. Specifically, it may be 1 to 50 weight%. More specifically, it may be 2 to 50 weight%. If the content of the wax is less than the above numerical range, it affects the solidification and texture retention of the cosmetic composition, and the product may become soft or oil separation may occur. If the content of the wax exceeds the above numerical range, it makes the cosmetic composition excessively hard, causing stiffness upon application and resulting in a problem of a rigid user experience.

[0035] The above oil is hydrogenated polyisobutene, phytosteryl / isostearyl / cetyl / stearyl / behenyl dimer dilinoleate, isotridecyl isononanoate, phytosteryl / behenyl / octyldodecyl lauroyl glutamate, dipentaerythrityl pentaisostearate, caprylic / capric triglyceride, phytosteryl / octyldodecyl lauroyl glutamate, and It may include one or more selected from the group consisting of octyldodecanol and polyglyceryl-2 triisostearate, but is not limited thereto.

[0036] The content of the above oil may be 20 to 95 weight% based on the total weight of the cosmetic composition. Specifically, it may be 30 to 95 weight%. More specifically, it may be 40 to 95 weight%. If the oil content is below the above numerical range, a dry feeling may occur and dead skin cells on the lips may become prominent, and if it exceeds the above numerical range, it may cause greasiness and stickiness due to residue remaining unabsorbed into the skin, which may reduce the user experience.

[0037] The above lip cosmetic composition may further include one or more selected from the group consisting of surfactants, antifoaming agents, preservatives, and antioxidants.

[0038] The above surfactants are Lauryl Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone*Tocopherol, Lauryl Dimethicone / Polyglycerin-3 Crosspolymer, Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone, Caprylyl Methicone, Lauryl PEG PPG-18 / 18 Methicone, Stearyl Dimethicone, Polyhydroxystearic Acid*Ethylhexyl Palmitate*Isopropyl Myristate*Isostearic Acid*Lecithin*Polyglyceryl-3 It may include, but is not limited to, one or more selected from the group consisting of polyglyceryl-3 polyricinoleate (polyhydroxystearate / polyhydroxystearate / sebacate), polyglyceryl-4 diisostearate, polyhydroxystearate, polyglyceryl-3 diisostearate, sorbitan sesquioleate, ethylhexyl stearate, and hydrogenated castor oil.

[0039] The above defoaming agent may include one or more selected from the group consisting of dimethicone, fluorosilicone oil, hydrophobic silica aerogels, siloxane-oxyalkylene copolymers, and methylhydrosiloxane / dimethylsiloxane copolymer, but is not limited thereto.

[0040] The above pigment comprises, but is not limited to, one or more selected from the group consisting of RED#7, FD&C Red No. 40, Carmine, CI 15850 (Red 6 or Red 7), Red Iron Oxide, Lip Liquid-Pigment Red, UNICERT Red K7057-J, and Mica.

[0041] The above cosmetic composition may further comprise any conventional cosmetic ingredient selected from additional ingredients commonly used in cosmetics, such as thickeners, dispersants, fragrances, fillers, preservatives, antiseptics, neutralizing agents, sweeteners, vitamins, free-radical scavengers, metal ion chelating agents, functional ingredients, and mixtures thereof. A person skilled in the art may select any additional ingredient and / or the amount thereof so that the advantageous properties of the composition according to this specification are not adversely affected or are substantially affected by the expected addition.

[0042] In addition, the above cosmetic composition may be used by applying it alone or in combination, or by applying it in combination with other cosmetic compositions other than the present invention. Furthermore, the cosmetic composition according to the present invention may be used according to conventional methods of use, and the frequency of use may be varied depending on the user's skin condition or preference.

[0043] The above cosmetic composition may be a cosmetic raw material composition that can be used in the manufacture of cosmetics. Additionally, the above cosmetic composition may be a cosmetic composition having a final cosmetic formulation.

[0044]

[0045] The present invention will be described in more detail below through examples. These examples are intended solely to explain the present invention more specifically, and it will be obvious to those skilled in the art that the scope of the present invention is not limited by these examples according to the gist of the present invention.

[0046]

[0047] [Examples 1 to 5 and Comparative Examples 1 to 4]

[0048] Lipsticks were prepared by including the lip cosmetic compositions of Examples 1 to 5 and Comparative Examples 1 to 4 with the compositions of [Table 1] below (Unit: weight%). Specifically, wax and oil components were heated to 80-85°C, stirred, and completely dissolved (transparency was confirmed). After complete dissolution, a film-forming agent, surfactant, antifoaming agent, preservative, antioxidant, and pigment were added, heated to 80-85°C and stirred, followed by degassing. The cosmetic composition was then poured into a stick mold and cooled to produce a stick-type lipstick product.

[0049] Film-forming agent A: Silicone-based film-forming agent

[0050] Film-forming agent B: Acrylate / silicone hybrid film-forming agent

[0051] [Correction pursuant to Rule 91 May 13, 2026]

[0052]

[0053] Experimental Example 1: Evaluation of Pigment Durability of Lip Cosmetic Composition

[0054] Evaluation of pigment retention through friction resistance testing

[0055] Cosmetic compositions according to Examples 1 to 5 and Comparative Examples 1 to 4 were prepared, and their pigment retention was compared. The pigment retention test was performed by measuring the amount of residual pigment after friction using a rub resistance test with a Crockmeter (compliant with ASTM D6279 standard), and the results are shown in [Table 2].

[0056] Measurement conditions:

[0057] - Friction speed: 10 times / min (using a 1.6 cm diameter circular pad)

[0058] - Load: 500 g.

[0059] - Number of repetitions: 50 times.

[0060] Measurement method: After applying the composition to a lip model (silicone-based) and drying for 30 minutes, the amount of residual pigment after friction was measured using a colorimeter (ΔE* value: based on the colorimeter).

[0061] A lower ΔE* value indicates superior friction resistance. A higher residual pigment rate indicates superior pigment retention.

[0062] Sample ΔE* (Color Difference) Residual Pigment Rate (%) Example 11.292% Example 22.582% Example 32.183% Example 42.878% Example 52.085% Comparative Example 16.242% Comparative Example 24.555% Comparative Example 36.543% Comparative Example 45.842%

[0063]

[0064] Experimental Example 2: Moisture Evaporation Blocking Power

[0065] Evaluation of water evaporation blocking ability based on transepidermal water loss (TEWL) measurement

[0066] Cosmetic compositions according to Examples 1 to 3 and Comparative Examples 1 to 2 were prepared, and the amount of epidermal moisture evaporation was measured. The moisture barrier performance of the film was evaluated, and the maintenance of moisture balance of the cosmetic composition was measured. Tewameter ® TM 300 was used, and the cosmetic composition was evenly applied to a lip model (silicone material) and dried for 30 minutes, then measured using a Tewameter. ® The probe was placed in close contact with the surface, and the amount of moisture evaporation (g / m² / h) was recorded at 1-hour intervals for 24 hours. The average value was checked and is shown in [Table 3]. The moisture evaporation blocking effect can be confirmed by comparing it to the moisture evaporation rate of natural skin, which is 3–4 g / m² / h. It can be confirmed that the lower the value compared to the moisture evaporation rate of natural skin, the better the moisture retention capacity.

[0067] Sample moisture evaporation rate (g / m² / h) Example 1 2.5 Example 2 3.2 Example 3 3.0 Example 4 3.4 Example 5 2.8 Comparative Example 19.2 Comparative Example 27.5 Comparative Example 39.0 Comparative Example 48.2

[0068]

[0069] Experimental Example 3: Evaluation of Usability

[0070] The lip cosmetic compositions of Examples 1 to 3 and Comparative Examples 1 to 2 were evaluated on 20 men and women (ages 20–40) with prior skin testing experience. All participants were selected to include an equal number of dry, normal, and oily skin types. The panel participated with prior experience using lipstick through pre-testing and an understanding of the evaluation criteria. The results are shown in [Table 4].

[0071] Evaluation Items and Criteria

[0072] - Coloration intensity: Evaluates how strongly the pigment stains the lip surface.

[0073] 1 point: Very weak (almost no discoloration)

[0074] 2 points: Weak (weak discoloration)

[0075] 3 points: Average (moderate coloring)

[0076] 4 points: Strong (distinct coloration)

[0077] 5 points: Very strong (coloration is very distinct and vivid)

[0078] - Longevity: Evaluates how long the cosmetic stays on the lips

[0079] 1 point: Lasts 3 hours or less

[0080] 2 points: Lasts 3–6 hours

[0081] 3 points: Lasts 6–12 hours

[0082] 4 points: Lasts 12–24 hours

[0083] 5 points: Lasts for 24 hours or more

[0084] - Spreadability: Evaluates the smoothness and stickiness when applying the product to the lips.

[0085] 1 point: Very sticky

[0086] 2 points: Slightly sticky

[0087] 3 points: Average (slightly soft)

[0088] 4 points: Softness

[0089] 5 points: Very soft and smooth

[0090] Sample Color Intensity Durability Spreadability Total Evaluation Score Example 14.9 4.8 4.7 14.4 / 15.0 Example 24.2 3.7 4.2 12.1 / 15.0 Example 34.5 4.2 4.3 13.0 / 15.0 Example 44.2 3.7 4.0 11.9 / 15 Example 54.5 4.5 4.4 13.4 / 15.0 Comparative Example 12.5 1.8 3.0 7.3 / 15.0 Comparative Example 23.0 2.5 2.8 8.3 / 15.0 Comparative Example 32.2 1.5 2.5 6.2 / 15.0 Comparative Example 42.8 2.0 2.0 6.8 / 15.0

Claims

1. A cosmetic composition for lips comprising a silicone-based film-forming agent, an acrylate / silicone hybrid-type film-forming agent, a wax, an oil, and a pigment.

2. In Claim 1, The above silicone-based film-forming agent is Bis-C 16-18 Alkyl glyceryl undecyl dimethicone (Bis-C 16-18 alkyl glyceryl undecyl dimethicone), Dimethicone, Cyclomethicone, Cetyl Dimethicone, C 20-24 Olefin / oleyl alcohol copolymer (C 20-24 Olefin / Oleyl Alcohol Copolymer) and C 30-45 Alkyl dimethicone / polycyclohexanooxide crosspolymer (C 30-45 A cosmetic composition for lips comprising one or more selected from the group consisting of Alkyl Dimethicone / Polycyclohexene Oxide Crosspolymer.

3. In Claim 1, A cosmetic composition for lips comprising one or more selected from the group consisting of phenyl trimethicone*acrylates / dimethicone copolymer, silicone acrylate, acrylates / dimethicone copolymer, acrylates / dimethicone copolymer*isododecane, and acrylates / dimethicone copolymer*undecane*tridecane, wherein the above-mentioned film-forming agent of the acrylate / silicone hybrid series comprises phenyl trimethicone*acrylates / dimethicone copolymer, silicone acrylate, acrylates / dimethicone copolymer, acrylates / dimethicone copolymer*isododecane, and acrylates / dimethicone copolymer*undecane*tridecane.

4. In Claim 1, A cosmetic composition for lips in which the content of the above silicone-based film-forming agent is 0.01 to 30 weight% based on the total weight of the cosmetic composition.

5. In Claim 1, A cosmetic composition for lips in which the content of the above-mentioned acrylate / silicone hybrid film-forming agent is 0.001 to 30 weight% based on the total weight of the cosmetic composition.

6. In Claim 1, A cosmetic composition for lips in which the weight ratio of the silicone-based film-forming agent and the acrylate / silicone hybrid-based film-forming agent is 4:0.01 to 20.

7. In Claim 1, The above lip cosmetic composition further comprises one or more selected from the group consisting of surfactants, antifoaming agents, preservatives, and antioxidants.

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