JP7384372B2 - Solid cosmetic composition, method for producing solid cosmetic composition - Google Patents

Description

The present invention relates to a solid cosmetic composition and a method for producing the same.

Solid cosmetics are among the cosmetics that have become increasingly popular in recent years. This solid cosmetic contains semi-solid to solid oil as the main ingredient, so the dosage form at room temperature is semi-solid to solid, but when it comes into contact with your hands or skin, the semi-solid to solid oil melts at body temperature. It is characterized by its physical properties, which make it liquefied and easy to stretch and spread.

Solid cosmetics can be used all over the body, including the skin (particularly the face, hands, and feet) and nails. It is generally known that applying solid cosmetics to the skin moisturizes and moisturizes the skin.
Examples of the forms of commercially available solid cosmetics include those that are molded and then packaged, those that are filled in cans or bottles, and those that are stick-type.

As prior art regarding solid cosmetics, for example, in Patent Document 1, (i) (a) hard vegetable butter in an amount of 10 to 45% by weight relative to the outer layer, and (b) relative to the outer layer. a solid comprising an outer layer comprising a soft vegetable butter in an amount of 55 to 80% by weight and (ii) an inner core which is (a) a soft vegetable butter composition, (b) fondant, or (c) a liquid cosmetic product. A cosmetic composition is disclosed. US Pat. No. 5,001,000 describes a solid cosmetic composition comprising vegetable butter, wherein the solid composition has air bubbles dispersed therein, the air bubbles occupying at least 20% of the volume of the solid cosmetic composition. A solid composition is disclosed.

Special table 2015-535235 publication Special Publication No. 2014-520138

The invention disclosed in Patent Document 1 was sticky when applied to the skin and was not comfortable to use. There were concerns that the invention disclosed in Patent Document 2 would be sticky when applied to the skin and that the oxidation stability of oils and fats would be problematic.
Therefore, the object of the present invention is to provide a solid cosmetic that does not feel sticky when applied to the skin and has high oxidation stability, even though it contains semi-solid to solid oil as a main component.

The present inventors have made extensive studies to solve the above problems. As a result, it was discovered that a solid cosmetic having the following structure and a method for producing the same can solve the above problems, and the present invention was completed.

The present invention includes, for example, the following [1] to [7].
[1] 15 to 80% by mass of shea butter (A), 15 to 80% by mass of cocoa butter (B), and at least one component selected from Abyssinian oil, meadowfoam oil, and an antioxidant (C ) and 0.1 to 20% by mass of vegetable liquid oil (D) (excluding Abyssinian oil and meadowfoam oil).
[2] The solid cosmetic composition according to [1], containing 1 to 50% by mass of beeswax (E).
[3] The solid cosmetic composition according to [1] or [2], containing 0.1 to 5% by mass of Abyssinian oil.
[4] The solid cosmetic composition according to any one of [1] to [3], containing 0.1 to 5% by mass of meadowfoam oil.
[5] The solid cosmetic composition according to any one of [1] to [4], wherein the total mass of shea butter (A) and cocoa butter (B) is 60 to 99% by mass.
[6] A method for producing the solid cosmetic composition according to any one of [1] to [5], comprising:
Step (1): Dissolve shea butter (A) and cocoa butter (B) to obtain solution a, Step (2): Dissolve solution a obtained in step (1), Abyssinian oil, and meadow foam. A step of mixing at least one component (C) selected from oil and an antioxidant with a vegetable liquid oil (D) to obtain a mixture b, step (3): obtained in step (2). A method for producing a solid cosmetic composition, comprising a cooling step of cooling the mixed liquid b.
[7] The method for producing a solid cosmetic composition according to [6], wherein the step (3) is a cooling step in which the center temperature of the mixed liquid b reaches 10° C. or less within 2 hours from the start of cooling.

The present invention can provide a solid cosmetic that does not feel sticky when applied to the skin and has high oxidation stability, even though it contains semi-solid to solid oil as a main component.

Next, the solid cosmetic composition of the present invention and its manufacturing method will be specifically explained.
<Solid cosmetic composition>
In the present invention, the solid cosmetic composition refers to a cosmetic composition whose dosage form is semi-solid to solid at room temperature (25° C.), and means a cream or ointment with a very high viscosity.
The solid cosmetic composition of the present invention contains 15 to 80% by mass of shea butter (A), 15 to 80% by mass of cocoa butter (B), and is selected from Abyssinian oil, meadowfoam oil, and an antioxidant. Contains 0.1 to 10% by mass of at least one component (C) and 0.1 to 20% by mass of vegetable liquid oil (D) (excluding Abyssinian oil and meadowfoam oil).

The solid cosmetic composition of the present invention optionally contains beeswax (E) preferably from 1 to 50% by mass, more preferably from 20 to 30% by mass. In addition, other components may be included as necessary.
In addition, the content of each of the above components indicates the content when the solid cosmetic composition is 100% by mass.

<Shea butter (A)>
The solid cosmetic composition of the present invention contains 15 to 80% by mass of shea butter (A), preferably 25 to 75% by mass, and more preferably 30 to 73% by mass.
The shea butter (A) used in the solid cosmetic composition of the present invention is not particularly limited as long as it is solid shea butter at room temperature (25°C), but it is preferably deodorized and bleached.
As the shea butter (A), specifically, Shea Butter RFO (manufactured by CELMYON Co., Ltd.) or the like can be used.
In the present invention, shea butter (A) is used in combination with cocoa butter (B), which will be described later.

<Cocoa butter (B)>
The solid cosmetic composition of the present invention contains 15 to 80% by mass of cocoa butter (B), preferably 25 to 70% by mass, and more preferably 30 to 65% by mass.
In the solid cosmetic composition of the present invention, the cocoa butter (B) is not particularly limited as long as it is solid cocoa butter at room temperature (25°C), but it is preferably deodorized and bleached.
As the cocoa butter (B), specifically, COCOA BUTTER RF (manufactured by CELMYON Co., Ltd.) or the like can be used.

In the solid cosmetic composition of the present invention, the total mass of the above-mentioned shea butter (A) and cocoa butter (B) is preferably 60 to 99% by mass, more preferably 65 to 95% by mass. preferable.

<Component (C)>
The solid cosmetic composition of the present invention contains 0.1 to 10% by mass, and preferably 1 to 5% by mass, of at least one component (C) selected from Abyssinian oil, meadowfoam oil, and an antioxidant. It is preferably contained in an amount of 2 to 4% by mass.

By containing component (C) in the above amount, the solid cosmetic composition of the present invention can suppress quality deterioration due to oxidation.
Abyssinian oil used in the present invention refers to oil extracted from seeds of Crambea abyssinica. The solid cosmetic composition of the present invention preferably contains Abyssinian oil because it has a high moisturizing effect when applied to the skin, provides a smooth feel, and suppresses quality deterioration due to oxidation. The solid cosmetic composition of the present invention preferably contains 0.1 to 5% by mass, more preferably 1 to 3% by mass of Abyssinian oil.

The meadowfoam oil used in the present invention refers to oil extracted from meadowfoam seeds, and preferably contains a large amount of tocopherols. The solid cosmetic composition of the present invention is preferably blended with meadowfoam oil because it has a high moisturizing effect, improves spreadability of the agent, and suppresses quality deterioration due to oxidation. The solid cosmetic composition of the present invention preferably contains 0.1 to 5% by mass, more preferably 1 to 4% by mass of meadowfoam oil.

Specifically, the antioxidants used in the present invention include ascorbyl tetrahexyldecanoate, ascorbyl stearate, ascorbyl palmitate, tocopherols, rosemary extract, tea extract, dibutylhydroxytoluene, butylhydroxyanisole, and phenolic oxidation agents. Inhibitors may be mentioned. Among these, ascorbyl tetrahexyldecanoate, ascorbyl stearate, ascorbyl palmitate, and tocopherols are preferred because they have high oxidation stability and have little effect on flavor and color when formulated into a preparation. When the solid cosmetic composition of the present invention contains an antioxidant, it preferably contains 0.01 to 10% by mass, more preferably 0.05 to 1% by mass. In addition, in the solid cosmetic composition of the present invention, when the antioxidant is less than the lower limit of 0.1% by mass of component (C), it may be used in combination with at least one selected from Abyssinian oil and meadowfoam oil. Bye.

Component (C) may be used alone or in combination of two or more. Component (C) is preferably at least two components selected from Abyssinian oil, meadowfoam oil, and an antioxidant, and is preferably Abyssinian oil and meadowfoam oil, or Abyssinian oil, meadowfoam oil, and More preferably, it is an antioxidant.

When Abyssinian oil and meadowfoam oil are used as component (C), the ratio of Abyssinian oil to meadowfoam oil (mass ratio) is preferably 1:0.1 to 1:10.

Furthermore, when Abyssinian oil, meadowfoam oil, and an antioxidant are used as component (C), the Abyssinian oil:antioxidant (mass ratio) is preferably 1:0.01 to 1:10. preferable.

<Vegetable liquid oil (D)>
The solid cosmetic composition of the present invention contains 0.1 to 20% by mass, preferably 1 to 10% by mass of vegetable liquid oil (D).
The vegetable liquid oil (D) used in the solid cosmetic composition of the present invention does not include Abyssinian oil and meadowfoam oil, which correspond to the above-mentioned component (C).

Specifically, the vegetable liquid oil (D) includes marula oil, baobab oil, argan oil, moringa oil, jojoba oil, apricot oil, coconut oil, almond oil, sweet almond oil, olive oil, sunflower oil, and grapeseed oil. , passionflower oil, wild African calabash oil, pomegranate oil, rosehip oil, sea buckthorn oil, hibiscus oil, cranberry oil, raspberry oil, avocado oil, macadamia oil, neem oil, prickly pear oil, rice oil, sesame oil , balanites oil, hemp seed oil, and amla oil. Among these, baobab oil and marula oil are preferred because they have a high moisturizing effect when applied to the skin, adjust the oil balance of the skin, and are silky and comfortable to use.

The vegetable liquid oil (D) may be used alone or in combination of two or more. When the vegetable liquid oil (D) is baobab oil and marula oil, the baobab oil:marula oil (mass ratio) is preferably 1:0.1 to 1:10.

<Beeswax (E)>
The solid cosmetic composition of the present invention optionally contains beeswax (E) preferably from 1 to 50% by mass, more preferably from 15 to 35% by mass.
It is preferable that the solid cosmetic composition of the present invention optionally contains beeswax (E) in the above amount, since this increases the shape stability of the composition.

<Other ingredients>
The solid cosmetic composition of the present invention may contain fragrances, pigments (yellow, green, brown, blue, orange, etc.), essential oils, extracts, lanolin, thickeners, in addition to the above-mentioned ingredients, to the extent that the effects of the present invention are not impaired. , humectants, herbal medicines, pH adjusters, preservatives, antioxidants, and other additives.

In addition, at least one kind selected from mango butter, murumuru butter, cupas butter, kokum butter, and avocado butter may be used in combination with shea butter (A) and cocoa butter (B).

Specifically, the fragrances include linalool, limonene, β-caryophyllene, cis-3-hexenol, farnesol, β-phenylethyl alcohol, 2,6-nonadienal, citral, α-hexylcinnamic aldehyde, β-ionone, ι -carvone, cyclopentadecanone, linalyl acetate, benzyl benzoate, γ-undecalactone, eugenol, rose oxide, indole, phenylacetaldehyde dimethyl acetal, and aurantiol. Specific essential oils include rosemary, orange, sweet orange, grapefruit, yuzu, bergamot, rose, lavender, cinnamon, eucalyptus, sandalwood, lime, lemon, lemongrass, frankincense, tea tree, musk, sage, coffee, Ylang-ylang, chamomile, geranium, vanilla, and neroli are mentioned, with rose, yuzu, lavender, orange, geranium, rosemary, and bergamot being preferred. Specifically, the extracts include aloe extract, aloe vera leaf extract, adlay seed extract, tea leaf extract, rice bran extract, chamomile flower extract, hamamelis extract, saxifrage extract, daisy flower extract, olive leaf extract, chamomile extract, asuna extract, and peony extract. Examples include root extract, yuzu fruit extract, soybean seed extract, grape seed extract, sage leaf extract, rosemary leaf extract, lavender flower extract, peach seed extract, and soybean seed extract.

The solid cosmetic composition of the present invention preferably does not substantially contain water. "Substantially free of water" means that the solid cosmetic composition does not include water present as an impurity in each component or water mixed in from the atmosphere during the production of the solid cosmetic composition of the present invention. However, this usually means that water is not intentionally added. Specifically, "substantially free of water" means that the water content in the solid cosmetic composition of the present invention is usually 0 to 7% by mass, preferably 0 to 5% by mass. do.

<Method for manufacturing solid cosmetic composition>
The solid cosmetic composition of the present invention can be produced, for example, by a production method including the following steps (1) to (3).
Step (1): A step of dissolving shea butter (A) and cocoa butter (B) to obtain a solution a.
Step (2): The solution a obtained in step (1), at least one component (C) selected from Abyssinian oil, meadowfoam oil, and an antioxidant, and vegetable liquid oil (D). Step of mixing to obtain mixture B.
Step (3): A cooling step of cooling the mixed liquid b obtained in step (2).

The point of view of obtaining a solid cosmetic composition in which each component is uniformly dispersed is that the step (3) is a cooling step in which the center temperature of the mixed liquid b reaches 10° C. or less within 2 hours from the start of cooling. preferred. Furthermore, from the viewpoint of preventing the obtained solid cosmetic composition from having a lumpy feel, it is preferable that the center temperature of the mixed liquid b reaches 10° C. or less within 2 hours.

In the method for producing a solid cosmetic composition, each component can be dissolved and mixed using a known method. The dissolution of shea butter (A) and cocoa butter (B) is preferably carried out under heating conditions, for example at 65 to 85° C., in order to uniformly mix each component.

In the method for producing a solid cosmetic composition, the step of molding can be performed before or after the step (3). When the molding step is performed before step (3), the mixture b may be filled into a can, bottle, or any other container, and the product may be made into a product through a cooling step in the container. When the molding step is performed after step (3), the product obtained may be molded into a stick-type product after the cooling step.

<Application>
The solid cosmetic composition of the present invention is a solid cosmetic that can be used on the whole body, such as the skin (particularly the face, hands, and feet) and nails, is non-sticky when applied to the skin, and has high oxidative stability.

EXAMPLES Next, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.
[Examples 1 to 5]
Solid cosmetics were manufactured by mixing each component according to the formulation shown in Table 1, and evaluated by the following method. In addition, the numerical values of the prescription in the table represent the mass % of each component when the solid cosmetic is 100 mass %. The results are shown in Table 1.
In addition, the following commercially available products were used for each component listed in Table 1.
<Shea butter (A)>
Shea Butter: Shea Butter RFO (manufactured by CELMYON Co., Ltd.)
<Cocoa butter (B)>
Cocoa butter: COCOA BUTTER RF (manufactured by CELMYON Co., Ltd.)
<(C)>
Abyssinian oil: ABYSSINIAN TERAL (manufactured by CELMYON Co., Ltd.)
Meadowfoam oil: MEADOWFOAM TERAL (manufactured by CELMYON Co., Ltd.)
Tocopherol: VITAMIN E (manufactured by XIAN LYPHAR BIOTECH)
<Vegetable liquid oil (D)>
Baobab oil: BAOBAB TERAL (manufactured by CELMYON Co., Ltd.)
Marula oil: MARULA TERAL (manufactured by CELMYON Co., Ltd.)
<Beeswax (E)>
Beeswax: BZWAX 36 (manufactured by CELMYON Co., Ltd.)
<Others>
Essential oil: Essential Oil CM (manufactured by CELMYON Co., Ltd.)
Aloe extract: Aloe vera extract (manufactured by Natural Cosmetic Lab)
Lanolin: LANOLIN USP (manufactured by XIAN LYPHAR BIOTECH)

[Production of Example 1]
All of the shea butter and cocoa butter were placed in a heat-resistant container and heated to about 70°C to melt the shea butter and cocoa butter. Baobab oil, marula oil, Abyssinian oil, meadowfoam oil, and essential oil were added and mixed. The mixture was filled into a molded container and cooled in a refrigerator so that the center temperature became 10° C. or less within 2 hours. After cooling, the product was cut into appropriate sizes.
The product was applied to the skin and its comfort was evaluated. In addition, the product was placed in a commercially available food storage container and stored at room temperature for 8 months, and changes in quality were observed.

[Production of Example 2]
Produced and evaluated in the same manner as in Example 1, except that the amounts of each component were changed to those listed in Table 1, and all shea butter, cocoa butter, and beeswax were placed in a heat-resistant container and heated to approximately 70°C. did.

[Production of Examples 3 to 5]
It was produced and evaluated in the same manner as in Example 1, except that the amounts of each component were changed to those listed in Table 1. Note that components not included in Example 1 were added at the same time as baobab oil, marula oil, Abyssinian oil, meadowfoam oil, and essential oil.

[Consideration]
The solid cosmetic compositions produced in Examples 1 to 5 were not sticky when applied to the skin and had high moisturizing effects. In addition, the solid cosmetic compositions produced in Examples 1 to 5 did not generate any deterioration odor or discoloration due to lipid oxidation after being stored at room temperature for 8 months or more, and their physical properties remained semi-solid to solid. It was a solid cosmetic with high oxidation stability.

Claims (7)

15 to 80% by mass of shea butter (A),
15 to 80% by mass of cocoa butter (B),
0.1 to 10% by mass of at least one component (C) selected from Abyssinian oil and meadowfoam oil;
Contains 0.1 to 20% by mass of vegetable liquid oil (D) (excluding Abyssinian oil and meadowfoam oil),
The vegetable liquid oil (D) is marula oil ,
A solid cosmetic composition substantially free of water . The solid cosmetic composition according to claim 1, containing 1 to 50% by mass of beeswax (E). The solid cosmetic composition according to claim 1 or 2, comprising 0.1 to 5% by mass of Abyssinian oil. The solid cosmetic composition according to any one of claims 1 to 3, comprising 0.1 to 5% by mass of meadowfoam oil. The solid cosmetic composition according to any one of claims 1 to 4, wherein the total mass of shea butter (A) and cocoa butter (B) is 60 to 99% by mass. A method for producing the solid cosmetic composition according to any one of claims 1 to 5, comprising:
Step (1): dissolving shea butter (A) and cocoa butter (B) to obtain a solution a,
Step (2): The solution a obtained in step (1),
At least one component (C) selected from Abyssinian oil and meadowfoam oil,
Production of a solid cosmetic composition, including a step of mixing with vegetable liquid oil (D) to obtain a mixture b.Step (3): a cooling step of cooling the mixture b obtained in step (2). Method. The method for producing a solid cosmetic composition according to claim 6, wherein the step (3) is a cooling step in which the center temperature of the mixed liquid b reaches 10° C. or less within 2 hours from the start of cooling.