JP2021172587A - Oil-in-water type emulsion cosmetic - Google Patents

Abstract

To provide an oil-in-water type emulsion cosmetic that is excellent in penetrating feeling and softness of the back skin in the presence of an electrolyte and also has long-term stability for 6 months.SOLUTION: An oil-in-water type emulsion cosmetic comprises the following components (A) to (E): (A) HLB10 to 15 polyoxyethylene hardened castor oil; (B) HLB10 to 15 polyoxyethylene sorbitol fatty acid ester; (C) polar oil in liquid form at 25°C; (D) gellan gum; and (E) electrolyte.SELECTED DRAWING: None

Description

The present invention relates to an oil-in-water emulsified cosmetic, and more specifically, to an oil-in-water emulsified cosmetic which is excellent in long-term stability while containing an electrolyte, and has excellent penetration and softness of the skin after use. Is.

Conventionally, oil-in-water emulsified cosmetics have been widely used in skin care cosmetics because they have both a fresh feeling of use and an emollient effect of oils. In addition, skin care cosmetics contain active ingredients such as whitening agents and moisturizers in order to obtain various beauty effects, and many of these active ingredients are bioactive electrolytes.

Examples of cosmetics containing such an electrolyte include a fatty acid ester salt of ascorbic acid-2-phosphate ester, a divalent alcohol having 5 or 6 carbon atoms, polyoxyethylene hydrogenated castor oil, and polyoxyethylene sorbitan fatty acid. Skin cosmetics containing esters and terpene compounds (Patent Document 1), specific polyoxyethylene sorbit fatty acid esters, specific polyoxyethylene hydrogenated castor oil, higher alcohols having 12 to 22 carbon atoms and / or 12 to 12 carbon atoms. An oil-in-water emulsified cosmetic containing 22 fatty acids monoglyceryl, water, and an electrolyte and having an average particle size of emulsified droplets of 50 to 300 nm (Patent Document 2) is known.

On the other hand, cosmetics (quasi-drugs) containing these active ingredients comply with the stability test guidelines for pharmaceutical products such as the stability test guidelines (June 2003, Pharmaceutical Trial No. 0603001), and 40. It is required to ensure long-term stability for 6 months in a temperature / 75% humidity environment.

Japanese Unexamined Patent Publication No. 2014-224071 Japanese Unexamined Patent Publication No. 2012-777001

However, there is a concern that cosmetics containing a large amount of electrolyte generally tend to cause poor stability such as separation when stored for a long period of time. Therefore, in order to improve stability, if a salt-resistant polymer is added, it may become sticky and impair the permeation feeling, or if a solid oil is added, the film feeling after use is strong, and the back skin is soft and moist. In some cases, I was not satisfied with the feeling. Therefore, when a highly polar oil agent is blended in order to enhance the permeation feeling, the surfactant that contributes to the emulsion stability is dissolved, which may cause a problem in terms of long-term stability.
Therefore, an object of the present invention is to provide an oil-in-water emulsified cosmetic that is excellent in permeation and softness of the back skin in the presence of an electrolyte, and also has long-term stability for 6 months.

As a result of diligent studies to solve the above problems, the present inventor has used a specific nonionic surfactant to emulsify a combination of polar oil and gellan gum in an oil-in-water emulsified cosmetic containing an electrolyte. It has been found that the composition can be stably stored for a long period of 6 months, and a cosmetic having excellent penetration and softness of the back skin can be realized, and the present invention has been completed.

That is, in the present invention, the following components (A) to (E):
(A) Polyoxyethylene hydrogenated castor oil of HLB10 to 15 (B) Polyoxyethylene sorbit fatty acid ester of HLB10 to 15 (C) Liquid polar oil at 25 ° C. Oil type in water containing gellan gum (E) electrolyte It provides emulsified cosmetics.
Further, as the uniform state of the present invention, an oil-in-water emulsified cosmetic having an electric conductivity of 0.01 to 2 S / m may be further used.

According to the present invention, even when an electrolyte is contained, the storage stability over a long period of time is excellent. In addition, the oil-in-water emulsified cosmetic of the present invention has an excellent permeation feeling, so that it fits well on the skin and is also excellent in the softness of the back skin. Therefore, it is useful as a highly functional skin care cosmetic such as a whitening cosmetic and an anti-aging cosmetic.

Hereinafter, the present invention will be described in detail. In addition, in this specification, "~" means the range including the numerical values before and after it.

The polyoxyethylene hydrogenated castor oil of the component (A) HLB10 to 15 used in the present invention is obtained by adding ethylene oxide to the cured castor oil obtained by hydrogenating the castor oil, and is HLB. Is not particularly limited as long as it is within the above range, and any of them can be used. Specifically, the number of moles of ethylene oxide added to the hardened castor oil is about 20 to 80 moles, and as these commercially available products, NIKKOL HCO-20, 30, 40, 50, 60, 80 (or more, (Manufactured by Nikko Chemicals Co., Ltd.) and the like, and one or more of them can be used as needed.

The content of the component (A) in the present invention is not particularly limited, but is 0.01% by mass (hereinafter, simply abbreviated as%) or more in the oil-in-water emulsified cosmetic from the viewpoint of penetration and long-term stability. Further, 0.1% or more is preferable, and from the viewpoint of usability such as stickiness, 5% or less, further 2% or less is preferable.

The polyoxyethylene sorbit fatty acid ester of the component (B) HLB 10 to 15 used in the present invention is obtained by adding ethylene oxide to sorbitol and esterifying it with a fatty acid, and if the HLB is within the above range, There are no particular restrictions, and any of them can be used. The component (B) is blended in combination with the component (A) to make the emulsified droplets finer, which contributes to a feeling of penetration and long-term stability.
Specific examples thereof include polyoxyethylene sorbitol monolaurate, polyoxyethylene sorbit tetraoleate, polyoxyethylene sorbitol tetrastearate, and the like, and one or more of them can be used as needed. Of these, polyoxyethylene sorbitol tetraoleate is preferable from the viewpoint of penetration and long-term stability. Examples of these commercially available products include NIKKOL GO-4V, NIKKOL GO-430NV, NIKKOL GO-440V, and NIKKOL GO-460V (all manufactured by Nikko Chemicals Co., Ltd.).

The content of the component (B) in the present invention is not particularly limited, but is preferably 0.01% or more, more preferably 0.1% or more in the oil-in-water emulsified cosmetic from the viewpoint of penetration and long-term stability. From the viewpoint of usability such as stickiness, 5% or less, more preferably 2% or less.

The component (C) liquid at 25 ° C. used in the present invention mainly contributes to the permeation feeling and the softness of the back skin, and if it is liquid at 25 ° C., it is usually used for cosmetics. If there is, it is not particularly limited and can be used regardless of the origin of volatile, non-volatile oil, animal oil, vegetable oil, synthetic oil and the like.

The IOB of the component (C) is not particularly limited, but those of 0.1 to 0.5 are preferably mentioned. When the IOB is within this range, it is preferable because it has an excellent permeation feeling. The IOB (Inorganic-Organic balance) is calculated by the following (Equation 1).
IOB = (Σ inorganic value / Σ organic) ... (Equation 1)
Specifically, cetyl 2-ethylhexanoate (IOB = 0.13), octyldodecyl neopentate (IOB = 0.13), isostearyl neopentate (IOB = 0.14), isotridecyl isononanoate (IOB = 0). .15), Isopropyl isostearate (IOB = 0.15), Trimethylolpropane triisostearate (IOB = 0.16), Olive oil (IOB = 0.16), Isopropyl palmitate (IOB = 0.16), Olein Ethyl acid acid (IOB = 0.16), hexyl laurate (IOB = 0.17), isopropyl myristate (IOB = 0.18), isodecyl isononanoate (IOB = 0.19), alkyl benzoate (C12-15) ) (IOB = 0.19), isononyl isononanoate (IOB = 0.20), decyltetradecanol (IOB = 0.21), isodecyl neopentanoate (IOB = 0.22), neopentyl glycol dicaprate (IOB) = 0.25), propylene glycol dicaprate (IOB = 0.26), octyldodecanol (IOB = 0.26), diisostearyl malate (IOB = 0.28), 2-ethylhexyl paramethoxysilicate crust (IOB value = 0.28), neopentyl glycol diethylhexanoate (IOB = 0.32), diethylhexyl succinate (IOB = 0.32), propylene glycol dicaprylate (IOB = 0.32), di (capril) / Capric acid) propylene glycol (IOB = 0.32), glyceryl tri2-ethylhexanoate (IOB = 0.35), pentaerythricyl tetraethylhexanoate (IOB = 0.35), polyglyceryl-2 diisostearate-2 (IOB) = 0.41), castor oil (IOB = 0.42), myristyl lactate (IOB = 0.47) and the like, and one or more of these can be used.

The molecular weight of the component (C) is not particularly limited, but is preferably 400 or less in terms of excellent emulsion stability. Specific examples of the component (C) having a molecular weight of 400 or less include cetyl lactate, myristyl lactate, isopropyl myristate, isotridecyl isononanoate, octyldodecyl neopentate, isostearyl neopentate, isopropyl palmitate, ethyl oleate, and laurin. Hexyl acid, hexyldecyl ethylhexanate, isotridecyl isononanoate, isopropyl isostearate, ethyl isostearate, ethylhexyl palmitate, octyldodecyl neodecanoate, isosetyl myristate, octyldodecanol, decyltetradecanol, neopentyl glycol diethylhexanate, Diisopropyl adipate, tripropylene glycol dineopentanoate, isodecylbenzoate, propylene glycol dicaprate, ethyl oleate, isononyl isononanoate, ethylhexyl isononanoate, diethylhexyl sebacate, isodecyl neopentate, ethylhexyl ethylhexanoate, cetyl ethylhexanate, Diethylhexyl succinate and the like can be mentioned, and one or more of these can be used.

The chemical structure of the component (C) is not particularly limited, but from the viewpoint of long-term stability in combination with the component (A) and the component (B), it preferably has a branched structure or an unsaturated structure, for example, myristic acid. Isopropyl, isotridecyl isononanoate, isostearyl neopentanoate, isopropyl palmitate, ethyl oleate, isononyl isononanoate, decyltetradecanol, isodecyl neopentanoate, octyldodecanol, cetyl 2-ethylhexanoate, glyceryl tri2-ethylhexanoate , Diethylhexyl succinate and the like. Further, since it has a property of easily penetrating into the skin, it is preferable to have a hydroxyl group structure, and examples thereof include octyldodecanol and decyltetradecanol. Among these, octyldodecanol is excellent in permeation feeling and softness of the back skin. Especially preferable in that respect. Examples of commercially available products include EUTANOL G-JP (manufactured by BASF).

The content of the component (C) in the present invention is not particularly limited, but is preferably 0.01% or more, more preferably 0.1% or more, from the viewpoint of penetration and the softness of the back skin, and from the viewpoint of long-term stability. 5% or less, more preferably 3.5% or less.

The component (D) gellan gum used in the present invention is a polysaccharide produced outside the cells by a microorganism called Sphingomonas elodea, which forms an elastic gel when swollen with water, and further contains calcium ions, sodium ions, etc. It is expected to thicken when combined with the metal ions of. Therefore, by binding to a small amount of metal ions present in the skin and quickly adapting to the skin, the permeation feeling is enhanced together with the component (C), and the back skin is formed with the component (E) having an excellent moisturizing effect. It contributes to the improvement of softness and long-term stability.

As the gellan gum, a native type and a deacyl type in which the acetyl group and the glyceryl group present in 1-3-bonded glucose are removed are known, and any of them can be used. Examples of commercially available products include deacylated kelcogel and native kelcogel LT-100 (both manufactured by CP Kelco), and one or more of them can be used.

The content of the component (D) in the present invention is not particularly limited, but is preferably 0.001% or more, more preferably 0.01% or more, and more preferably 0.05% or more from the viewpoint of penetration and long-term stability. From the viewpoint of usability such as stickiness, 0.5% or less is preferable, and 0.3% or less is more preferable.

The component (E) electrolyte used in the present invention is a substance that makes the solution electrically conductive when dissolved in water or other solvent, and is a beauty active ingredient such as a whitening agent and an anti-inflammatory agent. As a moisturizer, a pH adjuster, an ultraviolet protective agent, etc., any organic or inorganic material usually used in cosmetics can be used. Specifically, organic compounds such as amino acids, lactic acid, citric acid and pyrrolidone carboxylic acid, metal salts such as potassium, sodium, magnesium and calcium, inorganic salts such as sodium chloride and magnesium chloride, L-alanine and β. -Alanine, L-arginine, L-arginine hydrochloride, L-aspartin monohydrate, L-aspartic acid, polyaspartic acid, L-citrulin, L-cysteine, L-cysteine hydrochloride monohydrate, L- Cistine, L-dopa, L-glutamic acid, L-glutamine acid salt, L-glutamine, polyglutamic acid, glycine, trimethylglycine, L-histidine, L-histidine hydrochloride monohydrate, L-hydroxyproline, L-isoleucine , L-leucine, L-lysine, L-lysine hydrochloride, L-methionine, L-ornithine hydrochloride, L-proline, L-phenylalanine, L-serine, L-threonine, L-tryptophane, L-tyrosine, L -Amino acids such as valine and derivatives and salts thereof, and water-soluble ascorbic acids such as ascorbic acid, ascorbic acid phosphate ester, ascorbic acid sulfate ester, ascorbic acid glucoside and their metal salts such as sodium, potassium, magnesium and calcium. Can be mentioned. Further, glycyrrhizinates, glycyrrhetinate, salicylate, tranexamate, nicotinic acid amide, kodiic acid, urea, myoban and the like can be mentioned, and further, naturally derived aqueous solutions containing these electrolytes such as deep sea water and hot spring water. Can also be mentioned. These can be used alone or in combination of two or more, depending on the purpose of blending, if necessary.

The content of the component (E) in the present invention is not particularly limited and can be appropriately adjusted depending on the purpose of blending.
In the present invention, the content state of the electrolyte can be indicated by the electric conductivity of the oil-in-water emulsified cosmetic, and from the viewpoint of the softness of the back skin and long-term stability, the electric conductivity at 25 ° C. is 0.01 to It is preferably 2 S / m. The electrical conductivity was measured with EC METER CM-60G manufactured by TOA Corp.

In the oil-in-water emulsified cosmetic of the present invention, in addition to the above components (A) to (E), water and aqueous components such as polyhydric alcohol and lower alcohol, or ordinary oil-in-water type as components constituting the aqueous phase Ingredients used in emulsified cosmetics can be appropriately contained as long as the effects of the present invention are not impaired. For example, an oil agent other than the component (C), a surfactant other than the component (A) and (B), a water-soluble polymer other than the component (D), an ultraviolet absorber other than the component (E), an antioxidant, and an antibacterial agent. It can contain agents, preservatives, moisturizers, pH adjusters, refreshing agents, powders, vitamins, beauty ingredients, fragrances and the like.

The method for producing the oil-in-water emulsified cosmetic of the present invention is not particularly limited, and is prepared by a conventional method. For example, the components (A) to (C) and other components that have been heat-dissolved as needed are added and mixed with the components (D) and (E) that have been uniformly dissolved and mixed, and if necessary, the above optional components are added and mixed. Is added, and a method of preparing by mixing this can be mentioned.

The oil-in-water emulsified cosmetic of the present invention can be carried out in various forms such as liquid, gel, milky, cream and the like, and is not particularly limited.

The oil-in-water emulsified cosmetic of the present invention can be used as a cosmetic for the skin, for example, a lotion, a milky lotion, a cream, a beauty essence, a massage agent, a pack, a hand cream, a body lotion, and a body cream. Examples include sunscreens, foundations, eye shadows, eye liners, concealers, scalp treatments and the like. Skin care cosmetics are preferable in that you can feel the good penetration, and the methods of use are methods such as using with hands, fingers, cotton, impregnating with non-woven fabric, etc., and using by spraying directly. Can be mentioned.

Hereinafter, examples will be given to specifically explain the present invention, but the present invention is not limited to these examples and the like. Further, unless otherwise specified, the content is shown in mass% with respect to the composition containing the component.

Examples 1 to 14 and Comparative Examples 1 to 8: Beauty essence The beauty essence having the composition shown in Table 1 was produced by the following production method. , The evaluation was made by the method shown below. The results are also shown in Table 1. The measurement result of the electric conductivity of the example was 0.05 to 3 S / m.

(Production method)
A: Ingredients (1) to (8) were uniformly heated and dissolved at 75 ° C.
B: Ingredients (9) to (17) were uniformly heated and dissolved at 75 ° C.
C: B was added to A at 75 ° C., emulsified, and then stirred and cooled to room temperature to obtain a beauty essence.

(Evaluation method 1)
Women in their 20s to 40s were trained in sensory evaluation, and 10 specialized panels that could be evaluated according to certain criteria were selected. The specialized panel used each sample for the forearm, and evaluated the permeation feeling and the softness of the back skin felt at the time of use on a five-point scale by the following absolute evaluation and gave a score. The average value was calculated from the total score of all the panels for each sample, and the judgment was made according to the following four-step judgment criteria.

(A: Penetration)
<Absolute evaluation criteria>
(Score): (Evaluation)
5 points: I feel that there is a feeling of penetration into the skin 4 points: I feel a little if there is a feeling of penetration into the skin 3 points: Normal 2 points: I do not feel much if there is a feeling of penetration into the skin 1 point: I feel that there is a feeling of penetration into the skin I don't feel it <4 grade criteria>
(Judgment): (Average score)
◎: More than 4.5 points: Very good ○: More than 3.5 points and less than 4.5 points: Good △: More than 1.5 points and less than 3.5 points: Slightly poor ×: More than 1.5 points : Bad

(B: Softness of the back skin)
<Absolute evaluation criteria>
(Score): (Evaluation)
5 points: Feels soft 4 points: Feels soft 3 points: Normal 2 points: Does not feel very soft 1 point: Does not feel soft <4 grade criteria>
(Judgment): (Average score)
◎: More than 4.5 points: Very good ○: More than 3.5 points and less than 4.5 points: Good △: More than 1.5 points and less than 3.5 points: Slightly poor ×: More than 1.5 points : Bad

(Evaluation method 2)
(C: Long-term stability)
Each sample was placed in a constant temperature bath at 40 ° C., and the appearance (uniformity of emulsion) after 6 months was visually observed and judged according to the following criteria.
<Criteria>
(Judgment): (Evaluation)
◎: No creaming at all (emulsion is uniform and has no shading)
○: Very slightly creaming △: Very creaming ×: Remarkably creaming

As is clear from the results in Table 1, the beauty essences of Examples 1 to 14 were superior to the beauty essences of Comparative Examples 1 to 8 in terms of penetration, softness of the back skin, and long-term stability. ..
On the other hand, Comparative Example 1 containing no component (A) was inferior in permeation and long-term stability. Further, in Comparative Example 2 containing no component (B), the same result as in Comparative Example 1 was obtained. In Comparative Examples 3 to 6 in which another oil agent was blended in place of the component (C), the cosmetics did not easily penetrate into the skin, and the permeation feeling and the softness of the back skin were not sufficient. In Comparative Example 7 in which xanthan gum was blended instead of component (D) and Comparative Example 8 in which sodium hyaluronate was blended, it took time for the cosmetic to blend into the skin, resulting in poor penetration and a cosmetic film remaining on the skin. Due to its thinness and poor moisturizing effect, the softness of the back skin was not sufficient. Furthermore, the coalescence and separation of the emulsified droplets proceeded, and no satisfactory long-term stability was obtained.

Example 15: Gel-like emulsion (ingredient) (%)
(1) Polyoxyethylene hydrogenated castor oil * 6 4.5
(2) Polyoxyethylene sorbitol tetraoleate * 7 0.5
(3) Octyldodecanol 1
(4) Decyltetradecanol 1
(5) Phytosteryl oleate * 8 2
(6) Remaining amount of purified water (7) Gellan gum * 5 0.025
(8) Acrylic acid / alkyl methacrylate copolymer * 9 0.14
(9) Sodium acrylate / sodium acryloyldimethyltaurate copolymer mixture * 10 0.24
(10) Carboxyvinyl polymer 0.1
(11) Sodium Carboxymethyl Cellulose * 11 0.1
(12) 1,3-butylene glycol 15
(13) Ethanol 5
(14) Glycerin 0.5
(15) Polyoxyethylene methylglucoside * 125
(16) PEG-400 0.1
(17) Tranexamic acid 2
(18) Sodium metabisulfite 0.003
(19) Sodium hydroxide 0.076
(20) Sodium monohydrogen phosphate 0.1
(21) Sodium dihydrogen phosphate 0.1
* 6: NIKKOL HCO-40 (manufactured by Nikko Chemicals Co., Ltd.)
* 7: NIKKOL GO-460NV (manufactured by Nikko Chemicals Co., Ltd.)
* 8: Prandour SUN (manufactured by Nippon Fine Chemical Co., Ltd.)
* 9: AQUAPEC HV-803ERK (manufactured by Sumitomo Seika)
* 10: SIMULGEL EG QD (manufactured by SEPPICS.A.)
* 11: CEKOL (manufactured by CP Kelco)
* 12: McBiobride MG-10E (manufactured by NOF CORPORATION)

(Production method)
A: Ingredients (1) to (5) were uniformly heated and dissolved at 75 ° C.
B: Ingredients (6) to (11) were heated to 75 ° C.
C: Ingredients (12) to (21) were uniformly heated and dissolved at 75 ° C., and then cooled to 35 ° C.
D: B was added to A at 75 ° C., emulsified, and then cooled to 35 ° C.
E: C was added to D and stirred to obtain a gel emulsion.
The gel-like emulsion obtained as described above had an electrical conductivity of 0.1 S / m, and was excellent in permeation, softness of the back skin, and long-term stability.

Example 16: Essence (ingredient) (%)
(1) Polyoxyethylene hydrogenated castor oil * 1 0.3
(2) Polyoxyethylene hydrogenated castor oil * 6 0.2
(3) Polyoxyethylene sorbitol tetraoleate * 2 0.1
(4) Polyoxyethylene cholesteryl ether * 13 0.1
(5) Octyldodecanol 0.5
(6) d-δ-tocopherol 0.1
(7) Cyclohexanedicarboxylic acid bisethoxydiglycol 0.1
(8) Squalene 0.5
(9) Remaining amount of purified water (10) Gellan gum * 14 0.05
(11) Xanthan gum * 5 0.2
(12) 1,3-butylene glycol 15
(13) Glycerin 5
(14) Diglycerin 1
(15) Ethanol 10
(16) Disodium edetate 0.01
(17) Sodium hyaluronate 0.01
(18) Citric acid 0.1
(19) Sodium monohydrogen phosphate 0.3
(20) Sodium thiosulfate 0.05
(21) Fermented rice liquid * 15 30
* 13: EMALEX CS-24 (manufactured by Nikko Chemicals Co., Ltd.)
* 14: KELCOGEL CG-HA (manufactured by CP Kerco)
* 15: Rice extract Koken BG (manufactured by Kokensha)

(Production method)
A: Ingredients (1) to (8) were uniformly heated and dissolved at 75 ° C.
B: Ingredients (9) to (11) were heated to 75 ° C.
C: Ingredients (12) to (21) were uniformly heated and dissolved at 75 ° C., and then cooled to 35 ° C.
D: B was added to A at 75 ° C., emulsified, and then cooled to 35 ° C.
E: C was added to D and stirred to obtain a gel emulsion.
The electrical conductivity of the beauty essence obtained as described above was 0.3 S / m, and it was excellent in permeation, softness of the back skin, and long-term stability.

Example 17: Gel-like lotion (ingredient) (%)
(1) Polyoxyethylene hydrogenated castor oil * 16 0.05
(2) Polyoxyethylene sorbitol tetraoleate * 17 0.03
(3) Polyoxyethylene alkyl (12 to 15) ether phosphoric acid (8EO) 0.01
(4) Setostearyl alcohol 0.001
(5) Octyldodecanol 0.02
(6) Ethyl oleate 0.01
(7) Trimethylolpropane triisostearate 0.01
(8) Remaining amount of purified water (9) Gellan gum * 4 0.15
(10) Xanthan gum * 5 0.02
(11) 1,3-butylene glycol 12
(12) Dipropylene glycol 5
(13) Glycerin 1
(14) Polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether (3BO) (8EO) (5PO) 8
(15) L-ascorbic acid 2-glucoside 2
(16) Succinic acid 0.4
(17) Disodium succinate 0.05
(18) Sodium hydroxide 0.315
(19) Disodium edetate 0.1
* 16: NIKKOL HCO-60 (manufactured by Nikko Chemicals Co., Ltd.)
* 17: NIKKOL GO-440NV (manufactured by Nikko Chemicals Co., Ltd.)

(Production method)
A: Ingredients (1) to (7) were uniformly heated and dissolved at 75 ° C.
B: Ingredients (8) to (10) were heated to 75 ° C.
C: Ingredients (11) to (19) were uniformly heated and dissolved at 75 ° C., and then cooled to 35 ° C.
D: B was added to A at 75 ° C., emulsified, and then cooled to 35 ° C.
E: C was added to D and stirred to obtain a gel lotion.
The electric conductivity of the gel-like lotion obtained as described above was 0.8 S / m, and it was excellent in permeation, softness of the back skin, and long-term stability.

Claims (2)

The following components (A) to (E):
(A) Polyoxyethylene hydrogenated castor oil of HLB10 to 15 (B) Polyoxyethylene sorbit fatty acid ester of HLB10 to 15 (C) Liquid polar oil at 25 ° C. Oil type in water containing gellan gum (E) electrolyte Esterized cosmetics. The oil-in-water emulsified cosmetic according to claim 1, wherein the component (C) is one or more selected from ethyl oleate, decyltetradecanol, octyldodecanol, and glyceryl tri2-ethylhexanoate.