JP7305398B2 - Oil-in-water emulsified cosmetic - Google Patents

Description

TECHNICAL FIELD The present invention relates to an oil-in-water emulsified cosmetic, and more particularly, to an oil-in-water emulsified cosmetic that achieves both water resistance and washability and is excellent in usability and UV protection effect.

Various cosmetics containing ultraviolet absorbers have been put on the market in order to protect against ultraviolet rays that cause spots and aging and to improve the stability of the composition. In particular, sunscreen cosmetics are often used in swimming pools, sea bathing, and other scenes where you sweat. ing.

As a conventional sunscreen cosmetic, a water-in-oil type emulsified cosmetic having an oily outer phase is mainly used for reasons such as excellent water resistance.

However, water-in-oil emulsified cosmetics have problems such as stickiness and oily feeling during use, and inferior skin care effects such as moisturizing effect. Furthermore, since it exhibits oil film blocking properties, it is not suitable for mixed skin or oily skin, and there are problems of exacerbating sebum troubles such as sebum shine and acne, and of poor detergency.

On the other hand, oil-in-water emulsified cosmetics with a water-based external phase have good feeling in use from the viewpoint of lack of oily feeling and freshness, do not exhibit oil film blockage, and have good detergency, but have poor water resistance. Since it is inferior, there was a problem in the durability of the ultraviolet protection effect.

The term "water resistance" as used in the present invention refers to the durability of a cosmetic coating film against water flow. Since water currents are generated in usage scenes such as sea bathing and pools, durability against water currents is important, not simply durability when immersed in water. In addition, the FDA (U.S. Food and Drug Administration) water resistance test in accordance with the final monograph and COLIPA (European Cosmetic Industry Association) "Guidelines for Evaluating Water Resistance of Sunscreen Products (Guidelines for Evaluating Sun Products) Water Resistance (December 2005)” also evaluates water resistance by generating water flow.

Conventional techniques for imparting water resistance to oil-in-water emulsified cosmetics include crosslinked alkyl acrylate/methacrylate copolymers, oily substances, ultraviolet absorbers and/or titanium oxide, trimethylsiloxy A sunscreen cosmetic is disclosed in which one or a combination of two or more selected from silicic acid and/or silylated pullulan is disclosed (Patent Document 1). In order to improve stickiness, sliminess, and secondary adhesion of the UV absorber, an oil-soluble UV absorber, a triester of glycerin and a linear saturated fatty acid having 16 to 26 carbon atoms, or glycerin and 16 carbon atoms may be used. 50% by weight or more of the total weight of the oil-in-water type sunscreen cosmetic is an oligomer ester of a straight-chain saturated fatty acid of up to 26 and a saturated aliphatic dibasic acid of 12 to 28 carbon atoms, an acrylic acid-based thickener, and water (Patent Document 2).

However, in the polymer emulsification using the crosslinked alkyl acrylate/methacrylate copolymer used in Patent Document 1, the emulsification is stabilized even when the emulsified particles are coarse, and the shear force is excessively applied. If added, the viscosity will decrease and the stability will decrease, so the dispersion of the encapsulated UV absorber will be insufficient, making it difficult to obtain a sufficient UV protection effect. When an agent is blended, there is a problem that sliminess and stickiness derived from the ultraviolet absorber occur. Furthermore, due to the characteristics of the thickening mechanism due to the repulsion of the anionic groups in the molecule, when a UV scattering agent is added to obtain a UV protection effect, the cationic metal ions are eluted, reducing charge repulsion. Since the viscosity is remarkably lowered, there is a problem that stable blending is difficult. In addition, when a large amount of silicone-based film-forming agent is blended in order to exhibit sufficient water resistance, there is a problem in terms of the feeling of use that the cosmetic coating film suddenly becomes sticky just before it is completely absorbed. However, there is a problem that the detergency is not good and a special cleansing agent is required, which puts a burden on the skin. In addition, in Patent Document 2, since there is no effort to improve the durability of the thickener or the blending of components that improve the adhesion to the application target, secondary adhesion is prevented, but the adhesion to the application target is not achieved. However, there was a problem in terms of water resistance.

From the above, there has been a demand for an oil-in-water emulsified cosmetic that is both water resistant and washable, and has excellent usability and UV protection effect.

JP-A-7-89834 JP 2016-69325 A

The present invention has been made in view of the above-mentioned prior art, and an object of the present invention is to provide an oil-in-water emulsified cosmetic that is compatible with water resistance and washability and has excellent usability and UV protection effect. .

In order to achieve the above object, the present inventors conducted extensive research and found that one or more selected from hydrophobic UV protection agents, water-holding paste oil, 2-acrylamido-2-methylpropanesulfonic acid and derivatives thereof. As a structural unit, homopolymers, copolymers, by containing one or more selected from crosspolymers, found that the above problems can be solved, the present invention has been completed.

That is, the present invention
An oil-in-water emulsified cosmetic containing the following components A to C.
Component A: One or more selected from hydrophobic UV protection agents Component B: Hydrophilic paste oil Component C: A homopolymer containing 2-acrylamido-2-methylpropanesulfonic acid and its derivatives as structural units, One or more selected from copolymers and crosspolymers

ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide an oil-in-water emulsified cosmetic that has both water resistance and rinsability and is excellent in usability and UV protection effect.

The square stirring impeller used in Example [Evaluation method 1: water resistance]. Measurement points of the plate when SPF was measured in Example [Evaluation method 4: UV protection effect].

The present invention will be described in more detail below. In addition, unless there is a special comment, when displaying the compounding quantity of a component below with "%", it means the weight%.

Component A in the present invention is one or more selected from hydrophobic UV protection agents, including hydrophobic UV absorbers and hydrophobized microparticle metal oxides. There is no particular limitation, and those commonly used in cosmetics can be used. In the present invention, the term “hydrophobic” refers to a substance having a solubility in water of 1 g wt % or less.

Examples of these hydrophobic ultraviolet absorbers include 2-ethylhexyl paramethoxycinnamate, hexyl diethylaminohydroxybenzoylbenzoate, 2,4-bis-[{4-(2-ethylhexyloxy)-2-hydroxy}- phenyl]-6-(4-methoxyphenyl)-1,3,5-triazine, octocrylene, 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5- Triazine, glyceryl mono-2-ethylhexanoate di-paramethoxycinnamate, methyl 2,5-diisopropylcinnamate, isopropyl paramethoxycinnamate/diisopropylcinnamate mixture, p-methoxyhydrocinnamate diethanolamine salt , amyl paradimethylaminobenzoate, 2-ethylhexyl paradimethylaminobenzoate, para-aminobenzoic acid, ethyldihydroxypropyl para-aminobenzoic acid, glyceryl para-aminobenzoic acid, octyldimethyl para-aminobenzoic acid, homomenthyl salicylate, 2-ethylhexyl salicylate, salicylic acid triethanolamine, dihydroxydimethoxybenzophenone, sodium dihydroxydimethoxybenzophenone disulfonate, 2,2′4,4′-tetrahydroxybenzophenone, 4,4′-dihydroxybenzophenone, 4-tert-butyl-4′-methoxydibenzoylmethane, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfuric acid, 2,2′-dihydroxy-4-methoxybenzophenone, 2,4-dihydroxybenzophenone, 2,2′-dihydroxy-4, 4′-dimethoxybenzophenone, 2-hydroxy-4-n-octyloxybenzophenone, 2-phenyl-benzimidazole-5-sulfate, 4-isopropyldibenzoylmethane, dimethoxybenzylidenedioxoimidazolidinepropionate 2-ethylhexyl, 1- (3,4-dimethoxyphenyl)-4,4-dimethyl-1,3-pentanedione, cinoxate, methyl-O-aminobenzoate, 3-(4-methylbenzylidene)camphor, octyltriazone, methylenebisbenzotriazol Rutetramethylbutylphenol may be mentioned. 1 type(s) or 2 or more types can be used for these.

The blending amount of the hydrophobic ultraviolet absorber is not particularly limited as long as the effects of the present invention can be obtained, but it is usually 2 to 30% by weight, preferably 5 to 20%, based on the total amount of the oil-in-water emulsified cosmetic. It is used in the weight percent range. Within this range, the water resistance, UV protection effect, and usability are very excellent.

Hydrophobized fine particle metal oxide is obtained by using a fine particle metal oxide as a base material and subjecting the surface of the base material to a hydrophobization treatment. Zinc oxide, titanium oxide, cerium oxide, and the like are preferable as the base material of the hydrophobized fine particle metal oxide, because they are highly effective in scattering ultraviolet rays.

From the viewpoint of preventing aggregation, the average particle size of the fine-particle metal oxide is preferably 0.01 μm or more, more preferably 0.012 μm or more. Moreover, from the viewpoint of transparency of the formulation, it is preferably 1 μm or less, more preferably 0.4 μm or less. A specific average particle size range is preferably 0.01 to 1 μm, more preferably 0.012 to 0.4 μm. The average particle size is measured by a laser diffraction/scattering method.
The geometric form of the inorganic powder may be spherical, polyhedral, spindle-shaped, needle-shaped, plate-shaped, etc., as long as it is usually used in sunscreen cosmetics.

Types of hydrophobic treatment agents include silicone treatment with methylhydrogenpolysiloxane, dimethylpolysiloxane, methylphenylpolysiloxane, methylpolysiloxane, etc.; palmitic acid, isostearic acid, stearic acid, lauric acid, myristic acid, behenin Fatty acid treatment with acid, oleic acid, rosin acid, 12-hydroxystearic acid, etc.; fluorine treatment with perfluoroalkyl phosphate, perfluoroalcohol, etc.; amino acid treatment with N-acylglutamic acid, etc.; other, lecithin treatment; metal soap treatment ; Alkyl phosphate treatment and the like can be mentioned. At the time of hydrophobizing treatment, one or more of these hydrophobizing agents can be used.
The hydrophobization treatment method is not limited, and the hydrophobization treatment can be performed by a known hydrophobization treatment method. Examples thereof include a method of mixing a solution of a hydrophobizing treatment agent in a solvent and powder and drying, and a method of mixing powder and a hydrophobizing treatment agent and heating the mixture.

Specific examples of hydrophobized fine-particle metal oxides include methylhydrogenpolysiloxane-treated fine-particle titanium oxide, methylpolysiloxane-treated fine-particle titanium oxide, isostearic acid-treated fine-particle titanium oxide, stearic acid-treated fine-particle titanium oxide, Fluoroalkyl phosphate-treated fine titanium dioxide, methylhydrogenpolysiloxane-treated fine zinc oxide, methylpolysiloxane-treated fine zinc oxide, isostearic acid-treated fine zinc oxide, stearic acid-treated fine zinc oxide, perfluoroalkyl phosphate-treated fine particle Zinc oxide can be mentioned. 1 type(s) or 2 or more types can be used for these.

The amount of the hydrophobized microparticle metal oxide to be blended is not particularly limited as long as the effects of the present invention can be obtained. , preferably in the range of 3 to 30% by weight. Within this range, the water resistance, UV protection effect, and usability are very excellent.

As the hydrophobic ultraviolet protective agent (component A) in the present invention, a hydrophobic ultraviolet absorber and a hydrophobically treated fine metal oxide may be used alone or in combination.

The water-holding paste oil (component B) in the present invention is not particularly limited as long as it has a water-holding power equal to or greater than its own weight in the following water-holding test. The paste oil in the present invention is semi-solid at 25.degree. C. and has a melting point of 25 to 70.degree.
(Water holding test)
10 g of the oil agent to be tested is heated to 50° C., water at 50° C. is gradually added while stirring until the water drains from the oil agent, and the mixture is left at room temperature for a day and night. Thereafter, the separated water is removed, and the amount of water (weight g) held by the oil solution is measured. This value was divided by 10 g of the oil amount and multiplied by 100 to obtain water holding power (%).

Components corresponding to the above include (adipic acid/2-ethylhexanoic acid/stearic acid) glyceryl oligoester, N-lauroyl-L-glutamic acid di(phytosteryl/behenyl/2-octyldodecyl), N-lauroyl-L- Di(cholesteryl/behenyl/octyldodecyl) glutamate, dipentaerythrite fatty acid ester, mixed fatty acid triglyceryl, tri(caprylic/capric/myristic/stearate) glyceryl, hydrogenated castor oil stearate, phytosteryl isostearate, oleic acid Phytosteryl, Phytosteryl Hydroxystearate, Macadamia Nut Fatty Acid Phytosteryl, Branched Fatty Acid (C12-31) Phytosteryl, Dimer Dilinoleic Acid (Phytosteryl/Isostearyl/Cetyl/Stearyl/Behenyl), Dimer Dilinoleic Acid (Isostearyl/Phytosteryl), Dimerage Phytosterol derivatives such as dimer dilinoleyl bis(behenyl/isostearyl/phytosteryl) linoleate, lanolin, lanolin alcohol, lanolin fatty acid, lanolin derivatives such as lanolin acetate, and cholesterol derivatives such as hydroxy fatty acid cholesteryl and branched fatty acid cholesteryl. be done. Preferably, (adipic acid / 2-ethylhexanoic acid / stearic acid) glyceryl oligoester, N-lauroyl-L-glutamic acid di (phytosteryl / behenyl / 2-octyldodecyl), N-lauroyl-L-glutamic acid di (cholesteryl / behenyl/octyldodecyl), more preferably (adipic acid/2-ethylhexanoic acid/stearic acid) glyceryl oligoester. 1 type(s) or 2 or more types can be used for these.

The amount of the water-holding paste oil to be blended is not particularly limited as long as the effects of the present invention can be obtained, but it is usually 0.1 to 10% by weight, preferably 1% by weight, based on the total amount of the oil-in-water emulsified cosmetic. .0 to 5.0% by weight. Within this range, the water resistance is very excellent, and the feeling of use is also good.

Component C in the present invention is one or more selected from homopolymers, copolymers and crosspolymers containing 2-acrylamido-2-methylpropanesulfonic acid (acryloyldimethyltauric acid) and derivatives thereof as structural units. There are no particular restrictions, and those commonly used in cosmetics can be used.

Specific examples of polymers used as Component C include sodium polyacryloyldimethyltaurate, ammonium polyacryloyldimethyltaurate, polyacryloyldimethyltaurate, (acryloyldimethyltaurate ammonium/vinylpyrrolidone) copolymer, (sodium acrylate/acryloyldimethyl sodium taurate) copolymer, (hydroxyethyl acrylate/sodium acryloyldimethyltaurate) copolymer, (sodium acryloyldimethyltaurate/methacrylamidolauric acid) copolymer, (acrylamide/sodium acryloyldimethyltaurate/acrylic acid) copolymer, (ammonium acryloyldimethyltaurate/ carboxylethyl acrylate) crosspolymer, (dimethylacrylamide/sodium acryloyldimethyltaurate) crosspolymer, (sodium acrylate/acryloyldimethyltaurine/dimethylacrylamide) crosspolymer, and polyacrylate crosspolymer-11. Preferred are (ammonium acryloyldimethyltaurate/vinylpyrrolidone) copolymer and (sodium acrylate/sodium acryloyldimethyltaurate) copolymer. 1 type(s) or 2 or more types can be used for these.

The amount of one or more selected from homopolymers, copolymers, and crosspolymers containing 2-acrylamido-2-methylpropanesulfonic acid and derivatives thereof as structural units is within a range where the effects of the present invention can be obtained. Although there is no particular limitation, it is usually used in the range of 0.05 to 1.0% by weight, preferably 0.1 to 0.5% by weight, based on the total weight of the oil-in-water emulsified cosmetic. Within this range, the water resistance, feeling of use, and UV protection effect are very excellent.

By combining component C and component B, the durability of the polymer film formed by component C is not hindered, and the adhesion of the cosmetic coating film to the application target is improved, resulting in high water resistance. It is considered to be a thing. The water resistance is not improved by imparting water repellency, but rather by improving the adhesion of the cosmetic coating film to the application target, so that the washability is also good, and as a result, the water resistance is improved. It achieves both durability and cleanability.

In addition to the above-mentioned essential ingredients, the composition of the present invention may optionally contain ingredients commonly used in cosmetics. For example, powders other than component A, pearl agents, moisturizers, oils, thickeners, water-soluble polymers, fragrances, bactericides, preservatives, antioxidants, pH adjusters, chelating agents, anti-inflammatory agents, anti- Additives such as oxidizing agents, cooling agents, crude drug extracts and vitamins can be blended as appropriate. When these components are contained, the blending ratio can be appropriately selected depending on the type and purpose. One type may be used alone, or two or more types may be used in combination.

The present invention will be further described with reference to the following examples. It should be noted that these examples do not limit the present invention in any way.

[Evaluation method 1: water resistance]
<Evaluation method>
Water resistance was evaluated for the produced oil-in-water emulsified cosmetics of Examples 1 to 9 and Comparative Examples 1 to 8.

<Sample preparation>
A sample was prepared according to the SPF measurement method specified in ISO-24444. The oil-in-water emulsified cosmetics of Examples 1 to 10 and Comparative Examples 1 to 8 were applied to separate Helioplate HD6 (HELIOPLATE (registered trademark) HD6, manufactured by HerioScreen Lab., plate size: 5 cm × 5 cm, material: PMMA). A small spot was pipetted all over. At this time, 32.5±0.2 mg of the oil-in-water emulsified cosmetic was put on each plate. Next, apply an appropriate amount of the oil-in-water emulsified cosmetic to your finger, remove the excess bulk with a tissue, then spread it quickly over the entire plate with a light force using your finger, and then spread it evenly over the entire plate. rice field. Then, it was allowed to stand at room temperature for 30 minutes.
<Water resistance test>
The sample-prepared plate described above was fixed to a quartz plate and gently submerged in a constant temperature water bath adjusted to 29-31°C. Next, a 5.5 cm × 7.6 cm square stirring blade (Fig. 1) was attached to a three-one motor (manufactured by Shinto Kagaku Co., Ltd.), and the rotation speed was set to 100 rpm to generate a water flow. minutes. After that, the quartz plate to which the plate was fixed was gently taken out and left at rest at room temperature for 30 minutes.
<Calculation of residual rate after image analysis and water flow load>
After that, the plate was photographed with a digital single-lens reflex camera (NIKON D-70, manufactured by Nikon Corporation). After binarizing the obtained image using Photoshop 6.0 (manufactured by Adobe), the area of the remaining coating with respect to the area of the entire plate was calculated and used as the residual rate after water flow loading. The higher the residual rate after water flow load, the higher the water resistance.
<Evaluation Criteria>
◎: Residual rate after water flow load of 99% or more ○: Residual rate after water flow load of 90% or more and less than 99% △: Residual rate after water flow load of 80% or more and less than 90% ×: Residual rate after water flow load of less than 80%

[Evaluation Method 2: Detergency]
<Evaluation method>
Detergency was evaluated for the produced oil-in-water emulsified cosmetics of Examples 1 to 9 and Comparative Examples 1 to 8.

For the oil-in-water emulsified cosmetics of Examples 1 to 9 and Comparative Examples 1 to 8, 50 mg of the sample was applied to a total of 10 female panelists in their 20s to 40s in an area of 5 cm × 5 cm. and washed with a commercially available alkaline solid soap (Kao White: manufactured by Kao Corporation), and the easiness of washing off the cosmetic film was sensory evaluated.
<Evaluation Criteria>
◎: 9 or more people evaluated that it was “easy to wash off” ○: 7-8 people evaluated that it was “easy to wash off” △: 4-6 people evaluated that it was “easy to wash off” ×: “Easy to wash off” Less than 3 people evaluated

[Evaluation method 3: feeling of use]
<Evaluation method>
The oil-in-water type sunscreen cosmetics produced in Examples 1 to 9 and Comparative Examples 1 to 8 were evaluated for feeling during use.

For the oil-in-water emulsified cosmetics of Examples 1 to 9 and Comparative Examples 1 to 8, a total of 10 female panelists in their 20s to 40s were allowed to use the samples in blinds, and after application, "good spreadability", "stickiness" A sensory evaluation was made on "feeling". "Good spreadability" was evaluated as "very good spreadability", "good spreadability" and "poor spreadability". was graded as The results were classified according to the following evaluation criteria.
<Evaluation criteria for good elongation>
◎: 9 or more people evaluated that it “swelled well” ○: 7-8 people evaluated that it “swelled well” △: 4-6 people evaluated that it “swelled well” ×: “ Less than 3 people evaluated that it spreads well <Evaluation criteria for stickiness>
◎: 9 or more people evaluated it as “non-sticky” ○: 7-8 people evaluated it as “non-sticky” △: 4-6 people evaluated it as “non-sticky” ×: “non-sticky” Less than 3 people evaluated

[Evaluation method 4: UV protection effect]
<Evaluation method>
The SPF values of the produced oil-in-water emulsified cosmetics of Examples 1 to 9 and Comparative Examples 1 to 8 were measured in an in vitro system.

(Sample preparation)
A sample was uniformly coated on Helioplate HD6 by the method described in (sample preparation) in paragraph 0035 above.
(SPF measurement)
The SPF value of the plate was measured at 9 points using UV-1000S (manufactured by Labsphere) (Fig. 2), and the average value was obtained.
<Evaluation Criteria>
◎: SPF 30 or more ○: SPF 20 or more and less than 30 △: SPF 10 or more and less than 20 ×: SPF less than 10

(Preparation method)
Oil-in-water emulsified cosmetics (Examples 1 to 9, Comparative Examples 1 to 8) having compositions shown in Tables 1 and 2 below were prepared as follows. The oil phases (1) to (15) heated to 80°C were added to the water phases (16) to (26) and (28) and (29) heated to 80°C, and emulsified with a homomixer. bottom. Next, after adding (27), the mixture was sufficiently stirred and mixed, and then cooled to obtain the intended oil-in-water emulsified cosmetic.

As can be seen from Table 1, in Examples 1 to 9 of the present invention, high water resistance, good detergency, good feeling in use, and high UV protection effect were observed.

With reference to Examples 1 to 9, (Component A) one or more selected from hydrophobic UV protection agents, (Component B) water-holding paste oil, (Component C) 2-acrylamido-2-methyl In Examples 1 to 9 containing one or more selected from homopolymers, copolymers, and crosspolymers containing propanesulfonic acid and derivatives thereof as structural units, the residual rate after water flow load is 80% or more, " More than 7 out of 10 people evaluated that it spreads well and that it is not sticky, and the SPF value is 20 or more. I understand. In Examples 1 to 9, more than 7 out of 10 people evaluated that it was "easy to wash off". In Examples 1 to 9, although higher water resistance was obtained than in Comparative Examples 1 to 8, it was found that the washability was equal to or better than that of Comparative Examples 1 to 8. Furthermore, in Example 1 containing (adipic acid / 2-ethylhexanoic acid / stearic acid) glyceryl oligoester as component B in a suitable blending amount range, the residual rate after water flow load is 99% or more and "good elongation ”, indicating that the results are very good in terms of both water resistance and feel during use.

With reference to Comparative Examples 1 to 3, the residual rate after water flow load is all less than 80%. -Acrylamido-2-methylpropanesulfonic acid and its derivatives as structural units, even if it contains one or more selected from homopolymers, copolymers and crosspolymers, (Component B) water-retentive paste oil If it does not contain, the water resistance is low. In addition, referring to Comparative Examples 4 and 5, the residual rate after water flow load is both less than 80%, and referring to Comparative Example 6, the evaluation of good elongation is low and the UV protection effect is low. (Component A) One or more selected from hydrophobic UV protection agents, (Component B) Even if it contains a water-holding paste oil, (Component C) 2-acrylamide-2 -If it does not contain one or more selected from homopolymers, copolymers and crosspolymers containing methylpropanesulfonic acid and its derivatives as structural units, the water resistance is low or the UV protection effect is low. .
With reference to Comparative Examples 7 and 8, both resulted in a residual rate of less than 80% after water flow loading, and (Component B) water-holding paste oil, (Component C) 2-acrylamido-2-methylpropanesulfonic acid, and derivatives thereof as structural units, even if it contains one or more selected from homopolymers, copolymers and crosspolymers, (Component A) one or more selected from hydrophobic UV protection agents If it does not contain, the water resistance is low.

As described above, Comparative Examples 1 to 8 lacking any one of the components A, B, or C, which are essential components of the present invention, have excellent water resistance, feeling of use (good spreadability, stickiness), and UV protection effect. One item was inferior (evaluation was △ or less).

Formulation examples of the oil-in-water emulsified cosmetic composition of the present invention are given below. It was confirmed that the effects of the present invention can be obtained in any formulation.

Prescription example 1 (sunscreen cream)

Ingredients Amount (%)
(1) 2-ethylhexyl para-methoxycinnamate 10
(2) diethylaminohydroxybenzoyl hexyl benzoate 2
(3) Octocrylene 2
(4) 2-ethylhexyl paradimethylaminobenzoate 1
(5) Tri (caprylic/capric/myristic/stearic acid)
Glyceryl 3
(6) Methylphenylpolysiloxane 1
(7) Cetanol 1
(8) Eicosene-vinylpyrrolidone copolymer 1
(9) stearyl glycyrrhetinate 0.05
(10) d-δ-tocopherol 0.01
(11) (acryloyldimethyltaurate ammonium/vinylpyrrolidone) copolymer 0.5
(12) Concentrated glycerin 2
(13) 1,3-butylene glycol 4
(14) Potassium cetyl phosphate 0.5
(15) Alkyl acrylate copolymer emulsion (1) 1
(16) pH adjuster Appropriate amount (17) Preservative Appropriate amount (18) Purified water Remaining total 100

Formulation Example 2 (sunscreen lotion)
Ingredients Amount (%)
(1) 2-ethylhexyl para-methoxycinnamate 4.5
(2) Hexyl diethylaminohydroxybenzoylbenzoate 0.5
(3) stearic acid hydrogenated castor oil 2
(4) Methylpolysiloxane 2
(5) Hardened rapeseed oil alcohol 1
(6) stearyl glycyrrhetinate 0.05
(7) d-δ-tocopherol 0.01
(8) (sodium acrylate/sodium acryloyldimethyltaurate) copolymer mixture (pure content: 37.5%) 0.1
(9) Concentrated glycerin 3
(10) 1,3-butylene glycol 5
(11) Potassium cetyl phosphate 1
(12) Alkyl acrylate copolymer emulsion (1) 1
(13) pH adjuster Appropriate amount (14) Preservative Appropriate amount (15) Purified water Remaining total 100

Prescription Example 3 (Makeup base)
Ingredients Amount (%)
(1) 2-ethylhexyl para-methoxycinnamate 8
(2) diethylaminohydroxybenzoyl hexyl benzoate 1
(3) myristoylmethyl-β-alanine (phytosteryl/
decyltetradecyl) 2
(4) Methylphenylpolysiloxane 3
(5) behenyl alcohol 1
(6) Eicosene-vinylpyrrolidone copolymer 1
(7) stearyl glycyrrhetinate 0.05
(8) d-δ-tocopherol 0.01
(9) (acryloyldimethyltaurate ammonium/vinylpyrrolidone) copolymer 0.5
(10) Concentrated glycerin 2
(11) 1,3-butylene glycol 4
(12) Potassium cetyl phosphate 0.5
(13) Methylhydrogenpolysiloxane-treated fine titanium oxide 10
(14) Red iron oxide 0.04
(15) Yellow iron oxide 0.05
(16) pH adjuster Appropriate amount (17) Preservative Appropriate amount (18) Purified water Remaining total 100

Claims (4)

An oil-in-water emulsified cosmetic containing the following components A to C.
Component A: One or more selected from hydrophobic UV protection agents Component B: (adipic acid/2-ethylhexanoic acid/stearic acid) glyceryl oligoester, N-lauroyl-L-glutamic acid di(phytosteryl/behenyl/ 2-octyldodecyl), di(cholesteryl/behenyl/octyldodecyl) N-lauroyl-L-glutamate, tri(caprylic/capric/myristic/stearate) glyceryl, hydrogenated castor oil stearate, myristoylmethyl-β-alanine (phytosteryl / decyltetradecyl) 0.1% to 10% by weight of one or more selected from the group consisting of
Component C: Polyacryloyldimethyltaurate, polyacrylate crosspolymer-11, which is a homopolymer or crosspolymer containing 2-acrylamido-2-methylpropanesulfonic acid as a structural unit
and/or
Sodium polyacryloyldimethyltaurate, ammonium polyacryloyldimethyltaurate, (acryloyldimethyltaurate ammonium/vinylpyrrolidone) copolymers which are homopolymers, copolymers or crosspolymers containing derivatives of 2-acrylamido-2-methylpropanesulfonic acid as structural units , (sodium acrylate/sodium acryloyl dimethyl taurate) copolymer, (hydroxyethyl acrylate/sodium acryloyl dimethyl taurate) copolymer, (sodium acryloyl dimethyl taurate/methacrylamide lauric acid) copolymer, (acrylamide/sodium acryloyl dimethyl taurate/acrylic acid) copolymers, (ammonium acryloyldimethyltaurate/carboxyethyl acrylate) crosspolymers, (dimethylacrylamide/sodium acryloyldimethyltaurate) crosspolymers, (sodium acrylate/acryloyldimethyltaurate/dimethylacrylamide) crosspolymers,
0.0375% by weight to 1% by weight of one or more selected from Component B is (adipic acid/2-ethylhexanoic acid/stearic acid) glyceryl oligoester, N-lauroyl-L-glutamic acid di(phytosteryl/behenyl/2-octyldodecyl), N-lauroyl-L-glutamic acid di(cholesteryl) /behenyl/octyldodecyl). 3. The method according to claim 1 or 2, wherein component C is one or more selected from the group consisting of (ammonium acryloyldimethyltaurate/vinylpyrrolidone) copolymer and (sodium acrylate/sodium acryloyldimethyltaurate) copolymer. Oil-in-water emulsified cosmetic. The oil-in-water emulsified cosmetic composition according to any one of claims 1 to 3 , wherein component B is (adipic acid/2-ethylhexanoic acid/stearic acid) glyceryl oligoester.

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