JP6386738B2 - Oil-in-water (O / W) type emulsion composition, method for producing oil-in-water (O / W) type emulsion composition, and skin external preparation - Google Patents

Description

  The present invention relates to an oil-in-water (O / W) type emulsion composition, a method for producing an oil-in-water (O / W) type emulsion composition, and an external preparation for skin. The present invention relates to an O / W) emulsion composition, a method for producing the same, and an external skin preparation containing an oil-in-water (O / W) emulsion composition.

Emulsions are useful compositions that exhibit various functions by adjusting the type and ratio of the water phase and oil phase, and are widely used in industrial products such as cosmetics, pharmaceuticals, foods, and paints. Yes. In recent years, the emulsification technique has been further developed, and various emulsification methods have been developed for the purpose of ensuring higher stability or uniformly dispersing hardly soluble substances.
For example, Patent Document 1 discloses an oil-in-water emulsion in which a polyglycerin fatty acid ester having a specific composition, a polyhydric alcohol, an oily substance, and water are combined at a specific ratio, has heat stability, stability over time, and low-temperature storage. It is described that it is excellent in resilience from oil and can be applied to various oily substances.
Further, Patent Document 2 discloses a high crystallinity having a poor dispersibility in an aqueous medium or an oily medium by using a special polyglycerin fatty acid ester and a liquid oil having an IOB (inorganic / organic balance) value within a specific range. It is described that the substance can be dispersed stably and uniformly.

  In recent years, liquid crystal emulsification methods have been developed to form liquid crystal structures such as hexagonal liquid crystals, reverse hexagonal liquid crystals, lamellar liquid crystals, cubic liquid crystals, etc., and when used in cosmetics, etc., excellent moisture retention and emollient effects unique to liquid crystals It has been reported that the effect of promoting percutaneous penetration is exhibited. For example, in Patent Document 3, a composition containing an emulsifier containing sterol, polyglycerol fatty acid ester and lecithin as essential components forms a liquid crystal structure on the skin, protects the skin from external irritation, In addition to preventing transpiration of moisture from the skin, it is described that rough skin and dry skin are improved by giving a certain amount of moisture to the skin.

JP-A-11-262653 JP 2012-254454 A JP 2010-280587 A

As described above, the emulsion is a useful composition that exhibits various functions. For example, by making the emulsion droplets in the composition fine, when used in cosmetics, the refreshing feeling is good. A feeling of use can also be imparted. For this reason, various attempts have been made in the cosmetics field to control the emulsified droplets to be fine, and a so-called D-phase emulsification method has been studied as one of them. However, in the D phase emulsification method, there are many cases where restrictions are imposed on the preparation conditions such as the emulsification temperature. For this reason, for example, emulsification with a high melting point oil agent becomes difficult, and the rich feel obtained by adding a high melting point oil agent is difficult. It was difficult to impart (use feeling) to cosmetics and the like.
An object of the present invention is to provide an emulsified composition having both a refreshing feeling of use and a rich feel (usage of use).

As a result of intensive studies to solve the above-mentioned problems, the present inventors used glycerin as a polyhydric alcohol for forming the D phase, and further determined the glycerin content (water / glycerin mass ratio). By making it into a specific range, emulsification with a high melting point oil agent blended in the D phase emulsification method becomes possible, and a refreshing feeling obtained by the D phase emulsification method and a rich feel obtained by the high melting point oil agent (use The present invention was completed by finding that an emulsified composition having an actual feeling) can be realized.
That is, the present invention is as follows.
<1> An oil-in-water (O / W) emulsion composition obtained by adding an oil phase to a D (detergent) phase containing a surfactant, water, and glycerin, and further adding an aqueous phase. An oil-in-water (O / W) emulsion composition characterized by satisfying the conditions (a) and (b).
(A) The mass ratio of water / glycerin in the D phase is 0.2 to 2.0.
(B) The oil agent whose melting | fusing point is 70 degreeC or more is contained 0.01-10.0 mass% with respect to the emulsion composition whole quantity.
<2> Containing glycerol in an amount of 1.00 to 20.0% by mass based on the total amount of the emulsion composition, <1
> The oil-in-water (O / W) type emulsion composition of description.
<3> The oil-in-water (O / W) type emulsion composition according to <1> or <2>, which contains an aromatic alcohol in an amount of 0.01 to 2.00% by mass relative to the total amount of the emulsion composition.
<4> The oil-in-water (O / W) emulsion composition according to any one of <1> to <3>, wherein the surfactant is a polyglycerol fatty acid ester.
<5> The oil agent having a melting point of 70 ° C. or higher is carbana wax, candelilla wax, bees wax, microcrystalline wax, wood wax, whale wax, rice wax, bottal wax, hydrogenated jojoba oil, hydrogenated castor oil, 25 ° C. The oil-in-water (O / W) emulsion composition according to any one of <1> to <4>, which is at least one selected from the group consisting of higher fatty acids solid at 1 atm and higher alcohols.
<6> The oil-in-water (O / W) type emulsion composition according to any one of <1> to <5>, wherein an average particle size of the oil phase in the composition is 100 to 300 nm.
<7> The oil-in-water (O / W) type emulsion composition according to any one of <1> to <6>, which does not contain an ethylene oxide (EO) type nonionic surfactant.
<8> A first step of preparing a D (detergent) phase containing a surfactant, water, and glycerin, a second step of adding an oil phase to the composition prepared in the first step, and a second step. A method for producing an oil-in-water (O / W) type emulsion composition comprising a third step of adding an aqueous phase to a composition, characterized in that the following conditions (a ′) and (b ′) are satisfied: .
(A ′) The water / glycerin mass ratio in the D phase is 0.2 to 2.0.
(B ′) The temperature of the oil phase added in the second step is 70 ° C. or higher.
<9> Oil-in-water (O / W) type emulsified composition according to any one of <1> to <7>, or oil-in-water (O / W) type emulsified produced by the production method according to <8>. A skin external preparation containing the composition.

  ADVANTAGE OF THE INVENTION According to this invention, the emulsification composition which has a refreshing feeling of use and a rich feeling (use feeling) can be provided.

  The details of the present invention will be described with specific examples. However, the present invention is not limited to the following contents without departing from the gist of the present invention, and can be implemented with appropriate modifications.

<Oil-in-water (O / W) emulsion composition>
An oil-in-water (O / W) emulsion composition (hereinafter sometimes abbreviated as “emulsion composition of the invention”) which is one embodiment of the present invention is a D (containing surfactant, water, and glycerin). Detergen
t) An oil-in-water (O / W) emulsion composition obtained by adding an oil phase to a phase and further adding an aqueous phase, characterized by satisfying the following conditions (a) and (b) .
(A) The mass ratio of water / glycerin in the D phase is 0.2 to 2.0.
(B) The oil agent whose melting | fusing point is 70 degreeC or more is contained 0.01-10.0 mass% with respect to the emulsion composition whole quantity.
As described above, the emulsion is a useful composition that exhibits various functions. For example, by making the emulsified droplets in the composition fine, when used in cosmetics, the refreshing feeling is good. A feeling of use can also be imparted. For this reason, various attempts have been made to control the emulsified droplets to be fine in the cosmetics field, and as one of them, an oil phase is added to a surfactant phase called D (detergent) phase, and oil in phase D is added. A so-called D-phase emulsification method has been studied in which an (O / D) type emulsion is formed and an aqueous phase is further added to obtain an oil-in-water (O / W) type emulsion. However, the D-phase emulsification method is often restricted by preparation conditions such as the emulsification temperature. For this reason, for example, emulsification with a high melting point oil agent becomes difficult, and the rich feel obtained from the high melting point oil agent (actual feeling of use) It has been difficult to impart to cosmetics and the like.
The present inventors use glycerin as a polyhydric alcohol for forming the D phase, and further sets the glycerin content (water / glycerin mass ratio) to a specific range, for example, at a high temperature of 70 ° C. or higher. It was found that the D-phase emulsification method under the conditions becomes possible. Therefore, it is possible to emulsify with a high melting point oil agent in the D phase emulsification method, and the emulsified composition has both a refreshing feeling obtained by the D phase emulsification method and a rich feel (use feeling) obtained by the high melting point oil agent. Things became feasible.
The “mass ratio of water / glycerin in the D phase” means the mass ratio of water / glycerin in the D phase formed to obtain the emulsion composition of the present invention. W) represents a numerical value different from the content of glycerin in the total amount of the emulsified composition.

The emulsified composition of the present invention has a water / glycerin mass ratio of 0.2 to 1 in the D phase. The water / glycerin in the D phase is preferably 0.3 or more, more preferably 0.4 or more, preferably 0.98 or less, more preferably 0.97 or less. is there. If the water / glycerin mass ratio is too large, it will be difficult to form the D phase. If the water / glycerin mass ratio is too small, the orientation efficiency of the surfactant to the oil / water interface will be significantly reduced, and fine emulsified droplets will be formed. It becomes difficult.

  In the emulsified composition of the present invention, the type of the surfactant is not particularly limited, and known ones used in the cosmetics field and the like can be appropriately selected, but polyglycerol fatty acid esters are preferable. The HLB (Hydrophile-Lipophile Balance) value of the polyglycerol fatty acid ester is usually 10 or more, preferably 11 or more, more preferably 12 or more, and usually 18 or less, preferably 17 or less, more preferably 16 or less. Specific examples of the polyglycerol fatty acid ester include pentaglycerol monooleate and decaglyceryl isostearate, and pentaglycerol monooleate is particularly preferable. The surfactant contained in the D phase is not limited to one type, and may include two or more types. However, it is preferable not to contain an ethylene oxide (EO) type nonionic surfactant as the surfactant. By not containing an ethylene oxide (EO) type nonionic surfactant, it dehydrates in a high temperature environment and compensates for the disadvantage of the EO-type nonionic surfactant that cannot exhibit sufficient surface active ability. There is an advantage that an oil agent having a high melting point can be emulsified.

  In the emulsified composition of the present invention, the content of the surfactant in the D phase is not particularly limited, but is usually 0.3 or more, preferably 0.33 or more, as the surfactant / glycerin mass ratio in the D phase. More preferably, it is 0.375 or more, and is usually 0.75 or less, preferably 0.6 or less, more preferably 0.5 or less. Within the above range, the D phase is easily formed.

In the emulsified composition of the present invention, other conditions for forming the D phase are not particularly limited, but the D phase preferably contains an aromatic alcohol in addition to the surfactant, water, and glycerin. By including an aromatic alcohol, a stable D phase can be formed.
The type of the aromatic alcohol is not particularly limited, and a known one used in the cosmetics field and the like can be appropriately selected. The carbon number of the aromatic alcohol is usually 7 or more, preferably 8 or more. Usually, it is 15 or less, preferably 14 or less. Specific examples of the aromatic alcohol include phenoxyethanol and benzyl alcohol, and phenoxyethanol is particularly preferable. In addition, the aromatic alcohol contained in D phase is not restricted to one type, You may contain 2 or more types.

  In the emulsified composition of the present invention, the content of the aromatic alcohol in the D phase is not particularly limited, but is usually 0.01 or more, preferably 0.03 or more, as the mass ratio of the aromatic alcohol / glycerin in the D phase. More preferably, it is 0.05 or more, and is usually 0.10 or less, preferably 0.09 or less, more preferably 0.08 or less.

  The emulsified composition of the present invention contains 0.01 to 10.00% by mass of an oil agent having a melting point of 70 ° C. or higher with respect to the total amount of the emulsion composition. The melting point of is usually 95 ° C. or less.) Is not particularly limited, and known ones used in the cosmetics field and the like can be appropriately selected. Specifically, carbana wax, candelilla wax, bead wax, microcrystalline wax, wood wax, whale wax, rice wax, ibota wax, hydrogenated jojoba oil, hardened castor oil, higher fatty acid solid at 25 ° C. and 1 atmosphere, And higher alcohols. In addition, the oil agent whose melting | fusing point contained in the emulsified cosmetics of this invention is 70 degreeC or more is not restricted to 1 type, You may include 2 or more types. Further, an oil agent having a melting point of 70 ° C. or higher is added to the D phase as an oil phase, but the oil phase may contain an oil agent other than an oil agent having a melting point of 70 ° C. or more (specifically The oil agent will be described later as an optional component).

  The content of the oil agent having a melting point of 70 ° C. or higher in the emulsion composition of the present invention is preferably 0.10% by mass or more, more preferably 0.50% by mass or more, preferably with respect to the total amount of the emulsion composition. It is 5.0 mass% or less, More preferably, it is 4.0 mass% or less. Within the above range, good usability and spreadability (elongation) on the skin can be ensured.

The emulsion composition of the present invention is an oil-in-water (O / W) emulsion composition obtained by adding an oil phase to a D phase containing a surfactant, water, and glycerin, and further adding an aqueous phase. The addition amount of the oil phase is usually 0.10 or more, preferably 0.20 or more, more preferably 0.25 or more, and usually 7 as the mass ratio of the oil phase / D phase in the emulsion composition of the present invention. 0.0 or less, preferably 6.0 or less, more preferably 5.0 or less.
The amount of the aqueous phase added is usually 0.50 or more, preferably 0.75 or more, more preferably 1.0 or more, as a mass ratio of the aqueous phase / D phase in the emulsion composition of the present invention. It is 30.0 or less, preferably 25.0 or less, more preferably 20.0 or less.

About each component contained in the emulsion composition of this invention, it is as follows when content with respect to the emulsion composition whole quantity is put together.
The surfactant is usually 1.0% by mass or more, preferably 1.5% by mass or more, more preferably 2.0% by mass or more, and usually 10.0% by mass or less, based on the total amount of the emulsion composition. Preferably it is 9.0 mass% or less, More preferably, it is 8.0 mass% or less.
Water is usually 30.0% by mass or more, preferably 40.0% by mass or more, more preferably 50.0% by mass or more, and usually 95.0% by mass or less, preferably 95.0% by mass or less, based on the total amount of the emulsified composition. It is 90.0 mass% or less, More preferably, it is 85.0 mass% or less.
Glycerin is usually 1.0% by mass or more, preferably 1.5% by mass or more, more preferably 2.0% by mass or more, and usually 20.0% by mass or less, preferably 2% by mass or more, based on the total amount of the emulsion composition. It is 17.0 mass% or less, More preferably, it is 15.0 mass% or less.
The oil agent (including an oil agent having a melting point of 70 ° C. or higher) is usually 1.0% by mass or more, preferably 2.0% by mass or more, more preferably 3.0% by mass or more with respect to the total amount of the emulsion composition. Yes, usually 75.0 mass% or less, preferably 70.0 mass% or less, more preferably 65.0 mass% or less.
The aromatic alcohol is usually 0.01% by mass or more, preferably 0.05% by mass or more, and usually 2.0% by mass or less, preferably 1.0% by mass or less, based on the total amount of the emulsion composition. .
Within the above range, a stable D phase can be formed.

  The emulsified composition of the present invention is not particularly limited as long as it satisfies the conditions (a) and (b) described above, but the average particle size of the oil phase in the composition is usually 30 nm or more, Preferably it is 50 nm or more, More preferably, it is 70 nm or more, Usually, 500 nm or less, Preferably it is 400 nm or less, More preferably, it is 300 nm or less. When it is within the above range, it is easy to impart a good feeling of use such as a refreshing feeling when used for cosmetics and the like. The “average particle diameter of the oil phase in the composition” can be calculated from the particle size distribution obtained from the backscattering intensity using, for example, an optical microscope.

<Method for producing oil-in-water (O / W) emulsion composition>
The emulsified composition of the present invention is not particularly limited as long as it is obtained by adding an oil phase to D phase and further adding an aqueous phase, but it is produced by the following production method. It is preferable that it is a thing. The following production method is also an embodiment of the present invention (hereinafter, may be abbreviated as “the production method of the present invention”).
In the first step of preparing a D (Detergent) phase containing a surfactant, water, and glycerin, the second step of adding an oil phase to the composition prepared in the first step, and the composition generated in the second step A method for producing an oil-in-water (O / W) emulsion composition comprising a third step of adding an aqueous phase, characterized in that the following conditions (a ′) and (b ′) are satisfied.
(A ′) The water / glycerin mass ratio in the D phase is 0.2 to 2.0.
(B ′) The temperature of the oil phase added in the second step is 70 ° C. or higher.

  The production method of the present invention is characterized in that the water / glycerin mass ratio in the D phase is 0.2 to 2.0, and the details of the water / glycerin in the D phase are as described above.

  The production method of the present invention is characterized in that the temperature of the oil phase added in the second step is 70 ° C. or higher, and the temperature of the oil phase is preferably 70 ° C. or higher, more preferably 72 ° C. or higher. Usually, it is 95 ° C. or lower, preferably 90 ° C. or lower. When it is within the above range, emulsification in which various types of oils are blended becomes possible.

  The production method of the present invention is not particularly limited as long as it satisfies the above conditions (a ′) and (b ′), but the temperature of the composition to which the oil phase is added in the second step is The temperature is preferably the same as that of the oil phase. The temperature of the composition to which the aqueous phase is added in the third step is also preferably the same temperature as the oil phase to be added in the second step.

<External preparation for skin>
The use of the emulsified composition of the present invention is not particularly limited, and it is used for publicly known uses such as external preparations for skin (including cosmetics, external preparations for skin use, sundries for skin use, etc.), foods, paints, etc. Can be used widely. Among these, it is preferable to utilize for an external preparation for skin. In addition, the skin external preparation containing the emulsion composition of the present invention or the emulsion composition manufactured by the manufacturing method of the present invention may also be abbreviated as one embodiment of the present invention (hereinafter referred to as “the skin external preparation of the present invention”). .)

The skin external preparation of the present invention is not particularly limited as long as it contains the emulsion composition of the present invention or the emulsion composition produced by the production method of the present invention, and is blended in the skin external preparation. The oil may contain an optional component. Optional ingredients include, for example, macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, palm oil, palm oil, liquid lanolin, hydrogenated coconut oil, Hardened oil, mole, hardened castor oil, beeswax, candelilla wax, carnauba wax, ibotarou, lanolin, reduced lanolin, hard lanolin, jojoba oil, waxes; liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresin, petrolatum, Hydrocarbons such as microcrystalline wax; higher fatty acids such as oleic acid, isostearic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid; cetyl alcohol, stearyl alcohol, isostearyl alcohol , Behenyl alcohol, octyldodecanol, myristyl alcohol, cetostearyl alcohol, etc .; cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-sebacate 2-ethylhexyl, cetyl lactate, diisostearyl malate, ethylene glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, glycerin di-2-heptylundecanoate, glycerin tri-2-ethylhexanoate, tri Synthetic ester oils such as triethylolpropane-2-ethylhexanoate, trimethylolpropane triisostearate, pentane erythritol tetra-2-ethylhexanoate; dimethylpolysiloxane, methylphenylpolysiloxa Chain polysiloxanes such as diphenylpolysiloxane; cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexanesiloxane; amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, Oil agents such as silicone oil such as modified polysiloxane such as fluorine-modified polysiloxane; anionic surfactants such as fatty acid soap (sodium laurate, sodium palmitate, etc.), potassium lauryl sulfate, triethanolamine ether alkyl sulfate; Cationic surfactants such as stearyltrimethylammonium chloride, benzalkonium chloride, laurylamine oxide; imidazoline-based amphoteric surfactants (2-cocoyl-2-imidazolinium Muhydroxide-1-carboxyethyloxy disodium salt, etc.), betaine surfactants (alkyl betaine, amide betaine, sulfobetaine, etc.), and amphoteric surfactants such as acylmethyl taurine; sorbitan fatty acid esters (sorbitan mono) Stearates, sorbitan sesquioleate, etc.), glycerin fatty acids (such as glyceryl monostearate), propylene glycol fatty acid esters (such as propylene glycol monostearate), hardened castor oil derivatives, glycerin alkyl ether Tell, POE sorbitan fatty acid esters (POE sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbite fatty acid esters (POE-sorbit monolaurate, etc.), POE glycerin fatty acid esters POE-glycerin monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (such as POE2-octyldodecyl ether), POE alkylphenyl Ethers (POE nonylphenyl ether, etc.), Pluronic types, POE / POP alkyl ethers (POE / POP2-decyltetradecyl ether, etc.), Tetronics, POE castor oil, hydrogenated castor oil Derivatives (POE castor oil, POE hydrogenated castor oil, etc.), nonionic surfactants such as sucrose fatty acid esters, alkyl glucosides; moisturizing ingredients such as sodium pyrrolidone carboxylate, lactic acid, sodium lactate, etc. Red 202, Red 228, Red 226, Yellow 4 , Blue 404, Yellow 5, Red 505, Red 230, Red 223, Orange 201, Red 213, Yellow 204, Yellow 203, Blue 1, Green 201, Purple 201, Red Organic pigments such as No. 204; organic powders such as polyethylene powder, polymethyl methacrylate, nylon powder, organopolysiloxane elastomer; lower alcohols such as ethanol and isopropanol; vitamin A or its derivatives, vitamin B ₆ hydrochloride Vitamin B _{6 such} as vitamin B ₆ tripalmitate, vitamin B ₆ dioctanoate, vitamin B ₂ or derivatives thereof, vitamin B ₁₂ , vitamin B ₁₅ or derivatives thereof; α-tocopherol, β-tocopherol, γ-tocopherol, vitamin E Vitamin E such as acetate, vitamin D, vitamin H, pantothene Vitamins such as acid, pantethine and pyrroloquinoline quinone; and antibacterial agents such as phenoxyethanol.

  EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated further more concretely, unless it deviates from the meaning of this invention, it can change suitably. Accordingly, the scope of the present invention should not be construed as being limited by the specific examples shown below. In addition, unless otherwise specified, numerical values such as prescriptions in the examples mean numerical values based on mass.

<Examples , reference examples , comparative examples>
According to the composition shown in Table 1 below, the emulsion composition of the present invention, the emulsion composition of the reference example, and the emulsion composition of the comparative example were prepared. That is, after the component (a) is heated to 70 ° C. and uniformly mixed, the component (b) heated to 70 ° C. is added and kneaded firmly until uniform. Thereafter, the component (c) heated to 70 ° C. or higher is gradually added with stirring. Next, while continuing stirring, the component (d) heated to 70 ° C. is gradually added to emulsify. Then, it cooled to 30 degreeC and obtained the emulsion composition.
The phase state at the time of mixing the components (a) and (b) and the phase at the time of mixing the components (a), (b), and (c) were evaluated by a polarizing microscope. The results are shown in Table 1.

<Comparative Example 3>
According to the composition of Table 2 below, an emulsified composition of Comparative Example 3 was prepared. That is, after component (a) is heated to 70 ° C. and uniformly mixed, the component (b) uniformly dissolved at 70 ° C. is gradually added while stirring, and after emulsification, up to 30 ° C. Cooled to obtain an emulsified composition.

<Test Example 1 Evaluation of Emulsified Drop>
The particle diameter of the emulsion composition was measured with an optical microscope. Moreover, the particle size distribution was measured from the backscattering intensity of the emulsion composition. The results are shown in Table 3.

<Test Example 2 Evaluation of Usability>
When the emulsified compositions of Examples , Reference Examples and Comparative Examples were applied on the skin, the refreshing feeling and the feeling of use (rich feeling) were evaluated by the following five criteria by five skilled evaluators. The average score of five evaluators was used as the refreshing score and the usage score of the emulsified composition. The results are shown in Table 3.

<Test Example 3 Storage Stability>
The emulsified compositions of Examples , Reference Examples and Comparative Examples were stored at 50 ° C. for 3 months, and emulsion droplets were evaluated according to Test Example 1, and feeling of use was evaluated according to Test Example 2. The results are shown in Table 3.

  The emulsified composition of the present invention is useful in the fields of external preparations for skin (including cosmetics, external preparations for skin, sundries for skin use, etc.), foods, paints and the like.

Claims (8)

Generated in the first step of preparing a D (detergent) phase containing a surfactant, water, aromatic alcohol, and glycerin, the second step of adding an oil phase to the composition prepared in the first step, and the second step A method for producing an oil-in-water (O / W) emulsion composition comprising a third step of adding an aqueous phase to the composition, wherein the emulsion composition is an external preparation for skin, and the following (a) and (b) The manufacturing method characterized by satisfying the condition of
(A) The mass ratio of water / glycerin in the D phase is 0.2 to 1.0.
(B) The temperature of the oil phase added in the second step is 70 ° C. or higher.   The manufacturing method of Claim 1 which contains glycerin 1.0-20.0 mass% with respect to an emulsion composition whole quantity.   The manufacturing method of Claim 1 or 2 which makes an aromatic alcohol contain 0.01-2.0 mass% with respect to the emulsion composition whole quantity.   The manufacturing method of any one of Claims 1-3 whose said surfactant is polyglycerol fatty acid ester.   The manufacturing method of any one of Claims 1-4 which contains 0.01-10.0 mass% of oil agents whose melting | fusing point is 70 degreeC or more with respect to the emulsion composition whole quantity.   The oil having a melting point of 70 ° C. or higher is a carbana wax, candelilla wax, bees wax, microcrystalline wax, wood wax, whale wax, rice wax, ibota wax, hydrogenated jojoba oil, hydrogenated castor oil, 25 ° C. at 1 atm. The production method according to claim 5, which is at least one selected from the group consisting of a solid higher fatty acid and a higher alcohol. The manufacturing method of any one of Claims 1-6 whose average particle diameter of the oil phase in the emulsion composition manufactured is 100-300 nm.   The manufacturing method of any one of Claims 1-7 which does not contain an ethylene oxide (EO) type nonionic surfactant.