JP6930847B2 - Cosmetics or topical skin agents - Google Patents

Description

The present technology relates to cosmetics, external preparations for skin, and agents for suppressing discoloration of compositions containing (a) polyunsaturated fatty acids having 16 to 22 carbon atoms and (b) vitamin Es.

Free fatty acids having 18 to 22 carbon atoms and an unsaturated number of 2 or more in the molecular structure are often used in cosmetics or external preparations for skin for various purposes such as whitening action.
For example, Patent Document 1 describes a cosmetic containing as an active ingredient a free fatty acid having 18 to 22 carbon atoms and an unsaturated number of 2 or more in the molecular structure, a salt thereof, or an ester with a monohydric or divalent alcohol. It is disclosed.
Further, Patent Document 2 describes (a) an oil-soluble extract extracted from licorice, and (b) a free fatty acid having 18 to 22 carbon atoms and having 2 or more unsaturated bonds in its molecular structure. A whitening cosmetic containing one or more components selected from the group consisting of the salt and an ester thereof is disclosed.

No. 63-284109 Japanese Unexamined Patent Publication No. 5-194176

As shown in [Table 1] below, the present inventors have noticed that the cosmetic component, which is a mixture of polyunsaturated fatty acids having 16 to 22 carbon atoms and vitamin Es, is discolored over time. (See Test Examples 1 to 3).
In general, polyunsaturated fatty acids having 16 to 22 carbon atoms are known to be easily deteriorated by oxidation and the like and are unstable with time. In addition, vitamin Es are widely used as fat-soluble vitamins in foods, pharmaceuticals, cosmetics, etc., and are also widely used as antioxidants.
Normally, it is considered that the deterioration of the polyunsaturated fatty acid is suppressed by the antioxidant action of vitamin Es. However, in reality, discoloration occurred in the composition in which these were mixed.
In products such as cosmetics and external preparations for skin, it is desirable to use component (a) polyunsaturated fatty acids having 16 to 22 carbon atoms and component (b) vitamin E in combination, while discoloration is caused by the appearance of the product. In the case of unfavorable and discolored products, their use may be limited.

Therefore, the main purpose of this technique is to suppress discoloration of cosmetics or skin external preparations containing component (a) polyunsaturated fatty acids having 16 to 22 carbon atoms and component (b) vitamin Es.

In order to suppress discoloration of the composition containing the component (a) polyunsaturated fatty acid having 16 to 22 carbon atoms and the component (b) vitamin E, the present inventors have used this composition and various plant extracts. The combination of was examined.
As shown in [Table 2] below, regardless of which of the peony extract, rosemary extract, and green tea extract is used, the above-mentioned components are rather compared with the comparative example 1 product to which these plant extracts are not added. The discoloration of the composition containing (a) and the component (b) has become stronger. (See Comparative Examples 2 to 4). However, the present inventors have found that, by chance, the Coix seed extract can suppress discoloration of the composition containing the components (a) and (b), and completed the present invention.

That is, the present technology is as follows.
The present technology comprises the following components (a), component (b) and component (c);
(A) A cosmetic or skin external preparation containing a polyunsaturated fatty acid having 16 to 22 carbon atoms, (b) vitamin Es, and (c) Coix seed extract.

In addition, the present technology comprises the following components (a) and (b), which contain Coix seed extract as an active ingredient.
(A) One or more selected from polyunsaturated fatty acids having 16 to 22 carbon atoms (b) One or more selected from vitamin Es,
It is an agent that suppresses discoloration of a composition containing.

The component (a) may be linoleic acid or may contain it.
The component (b) may be vitamin E or may contain it.
The content mass ratio (a) / (b) of the component (a) and the component (b) may be 0.1 to 10000.
The content mass ratio [(a) + (b)] / (c) of the “component (a) + component (b)” and the component (c) may be 0.1 to 12000.
Discoloration due to the component (a) and the component (b) may be suppressed.

According to this technique, it is possible to suppress discoloration of cosmetics or skin external preparations containing component (a) polyunsaturated fatty acids having 16 to 22 carbon atoms and component (b) vitamin Es.
The effects described here are not necessarily limited, and may be any of the effects described in the present technology.

<Cosmetics or external preparations for skin>
The present technology is a composition containing a component (a) a polyunsaturated fatty acid having 16 to 22 carbon atoms, a component (b) vitamin Es, and a component (c) an adlay extract. It is desirable that the composition is a cosmetic or an external preparation for skin.
By using the component (c) Coix seed extract, discoloration caused by the component (a) and the component (b) can be suppressed, and a composition containing these components (a) and the component (b). It is possible to suppress the discoloration of Coix seeds and the discoloration of cosmetics or external preparations for skin.
In addition, the present technology includes the above-mentioned component (a), the above-mentioned component (b) and the above-mentioned component (c), and is used for external use of a composition, cosmetics or skin that suppresses discoloration due to the above-mentioned component (a) and the above-mentioned component (b). Agents can be provided.

Generally, as a cause of promoting "discoloration", for example, light (particularly ultraviolet rays), temperature (particularly heat, high temperature), pH and the like are said, and discoloration over time is regarded as a problem.
Usually, cosmetics or external preparations for skin are often packed after production and stored for a certain period of time, and are required to be stable over time even when exposed to various temperature environments and light during that period. In particular, since the appearance is an important quality for cosmetics and external preparations for skin, it is possible to suppress discoloration of the product over time due to the components (a) and (b) when the user opens the package or during the period of use. It becomes important.
In the present technology, it is an advantage that discoloration over time due to the component (a) and the component (b) can be suppressed at room temperature for a long period of time, and according to the following [Example], it should be suppressed at room temperature for at least 3 years or more. I think it is possible.

Further, "discoloration" can be determined by allowing the color difference: 50 ° C. and 5 ° C., respectively, and comparing the ΔE of the color measurement values after a certain period of time.
This color difference is preferably less than ΔE6, more preferably less than ΔE4.5, and even more preferably ΔE4.0 or less. It can be determined that the smaller the ΔE of this color difference, the smaller the degree of discoloration.

<Long-chain polyunsaturated fatty acids>
The polyunsaturated fatty acid having 16 to 22 carbon atoms, which is the component (a) used in the present technology, has an unsaturated bond number of 2 or 3 or more in its molecular structure. It is considered that the component (a) is discolored when used in combination with the component (b) vitamin E described later.
The component (a) polyunsaturated fatty acid may be in any state of a free fatty acid and a salt thereof (a salt that can be generally used), and one or more of them can be selected. The polyunsaturated fatty acid is preferably in the state of a free fatty acid, and preferably has two unsaturated bonds.
The carbon number of the polyunsaturated fatty acid is preferably 18 to 22.
As the component (a), a commercially available product may be used, and it is preferable to use a separated purified product or a synthetic product.

The component (a) has an action of drying the skin by ultraviolet rays and eliminating / preventing pigmentation such as spots and freckles. Therefore, the component (a) can be used as an emollient acting component or a whitening component. Then, by containing the component (a), a composition for emollients or whitening (for example, cosmetics, external preparations for skin, etc.) can be obtained.

Typical examples of the free fatty acid include linoleic acid, α-linolenic acid, γ-linolenic acid, dihomo-γ-linolenic acid, arachidonic acid, eicosapentaenoic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). ), Etc., and one type or two or more types can be selected from these.
Examples of the salt of the free fatty acid include metal salts such as sodium salt and potassium salt; amino acid salts such as arginine salt and lysine salt; amine salts such as triethanolamine salt and monoethanolamine salt, and the like. One type or two or more types can be selected from.

In the present technology, when the composition contains an ester of the polyunsaturated fatty acid, the ester derivative may be decomposed by temperature, pH, aging, etc. to produce a free polyunsaturated fatty acid. According to this technology, discoloration due to this free polyunsaturated fatty acid and vitamin Es can be suppressed.

Of the component (a), linoleic acid or a salt thereof is considered to easily cause discoloration when mixed with the component (b) vitamin Es, and linoleic acid also has a whitening effect and an emollient effect. , There is little odor.
For this reason, among the component (a), linoleic acid or a salt thereof (hereinafter, also referred to as linoleic acid) is preferable, and the component (a) containing linoleic acid (preferably linoleic acid) is preferable. .. Further, in the present technology, it is possible to include the above-mentioned component (a) other than linoleic acids as long as the efficacy is not impaired.
The emollient action of the present technology refers to an action of softening the skin and an action of moisturizing the skin.

The content or amount of the component (a) used in the present technology is preferably 0.0001% by mass to 5% by mass, more preferably 0.001% by mass to 3% by mass in terms of free fatty acids in the composition. It is preferable, and more preferably 0.01% by mass to 1% by mass.
The content or amount of linoleic acids used in the present technology is preferably 0.0001% by mass to 5% by mass, preferably 0.001% by mass to 3% in the composition, cosmetics or external preparation for skin. By mass% is more preferable, and 0.01% by mass to 1% by mass is further preferable.

Ingredients (b) Vitamin E used in this technology include tocopherols (eg, α-, β-, γ-, δ-tocopherols) and tocotrienol (eg, α-, β-, γ-, δ-tocotrienol, etc.) ) Etc. Vitamin E; Vitamin E acetate, Vitamin E nicotinate, α-tocopherol 2-L-ascorbic acid phosphate diester and other vitamin E derivatives (preferably vitamin E ester); salts of these (generally usable) Salt) and the like, and one or more of them can be selected.
As the component (b), a commercially available product may be used, and the component (b) may be of natural origin or a synthetic product. Further, when it is naturally derived, a separated refined product is preferable.

In general, synthetic vitamin E is a raw material produced by chemical synthesis (for example, dl-α-tocopherol or the like).

In general, naturally-derived vitamin E is extracted from vegetable oils or oils produced by microorganisms (for example, algae). Of these, vitamin E derived from vegetable oil is preferable because it is widely used in cosmetics and the like. Examples of this plant include soybean, sunflower seed, wheat germ, rapeseed and the like. Examples of algae include Euglena, Chlorella, Spirulina and the like.
Further, as naturally derived vitamin E, for example, those stabilized by adding an organic acid (for example, acetic acid, succinic acid, etc.) after extraction (for example, a vitamin E derivative containing d-α-tocophenol acetate, etc.) and Examples thereof include those that are not derived after extraction (vitamin E containing d-α-tocopherol and the like).

In general, vitamin E derived from vegetable oil or vitamin E derived from algae includes α-tocopherol, β-tocopherol, γ-tocopherol, and δ-tocopherol, and is one or a mixture of two or more selected from these. Usually, it often contains 2, 3 or 4 of these.

The composition ratio of vitamin E derived from vegetable oil that is generally commercially available includes α-tocopherol 5 to 20%, β-tocopherol 0 to 10%, γ-tocopherol 30 to 90%, and δ-tocopherol 5 to 60%. .. This commercially available vegetable oil-derived vitamin E is also known as natural vitamin E.

It is considered that the component (b) vitamin Es are likely to cause discoloration over time when mixed with the component (a) polyunsaturated fatty acid. Vitamin E has an antioxidant effect and a blood circulation promoting effect, and is often used in terms of cost and safety.

Of the components (b), vitamin E is preferable. As the vitamin E, it may be a synthetic vitamin E or a naturally occurring vitamin E. Further, in the present technology, it is possible to include the above-mentioned component (b) other than vitamin E as long as the efficacy is not impaired.
Of the vitamin E, tocopherol is preferable. The tocopherol may be synthetic tocopherol or natural tocopherol.
Of these, natural tocopherol is preferable because it is a mixture selected from α-tocopherol, β-tocopherol, γ-tocopherol and δ-tocopherol. Further, if it is a mixture, synthetic tocopherol may be used.

The content or amount of the component (b) used in the present technology is preferably 0.00001% by mass to 5% by mass, more preferably 0.0001% by mass to 3% by mass, and 0. 001% by mass to 1% by mass is more preferable.
The content or amount of vitamin E used in the present technology is preferably 0.00001% by mass to 5% by mass, more preferably 0.0001% by mass to 3% by mass, and 0. 001% by mass to 1% by mass is more preferable.

The Coix seed extract of the component (c) used in the present technology is an extract of the Gramineae (Poaceae) Coix Coix Coix (Coix lacryma-jobi var. Ma-yuen). Coix seeds are an annual plant native to China and Indochina that have been introduced to Japan for a long time and are cultivated in the warm regions of the southwestern region. In addition, the seeds of Coix seeds excluding the seed coat are called crude drugs "Yokuinin (&#34191; Tojin)" and Yokuinin (Japanese Pharmacopoeia).

Any part may be used as the part used for the extraction of the plant, and examples thereof include seeds, seed husks, seed coats, leaves and stems, and one or more selected from these are selected. Can be used. Of these, seeds are preferable, and seeds without seed coats are preferable from the viewpoint of suppressing discoloration of the present technology.

As the plant extraction site, one that has been appropriately treated such as drying, crushing, cutting or shredding can be used, and it is desirable to perform extraction after the treatment.

The method for extracting the plant is not particularly limited. Extraction may be carried out by using an extraction solvent by immersing the Coix seeds at a constant temperature (low temperature, room temperature or warming) for a predetermined period of time.

The extraction solvent is not particularly limited, and examples thereof include water, an organic solvent, and the like, and one or more of these can be selected. Further, carbon dioxide, water, etc. in a supercritical state can also be used.

As the organic solvent, for example, one or more selected from alcohols; ketones such as acetone; ethers such as ethyl ether; esters such as ethyl acetate; hydrocarbons such as hexane and benzene. Can be used.

Examples of the alcohols include lower monohydric alcohols (eg, methanol, ethanol, etc.); liquid polyhydric alcohols (eg, 1,3-butylene glycol, propylene glycol, glycerin, etc.) and the like.

The alcohols are preferably monohydric alcohols and divalent alcohols, and the alcohols preferably have about 1 to 5 carbon atoms.

Of the extraction solvents, water and / or alcohols (preferably having 1 to 4 carbon atoms) are preferable. As the alcohols, one or more alcohols selected from methanol, ethanol, propylene glycol and 1,3-butylene glycol (1,3-BG) are preferable.
Of these extraction solvents, one or a mixture of one or more selected from water, ethanol and 1,3-butylene glycol is more preferable, and water, ethanol and 1,3-butylene glycol are more preferable. , Ethanol water mixed solution, 1,3-butylene glycol water mixed solution, and even more preferably hydrous ethanol.
In the case of an aqueous alcohol solution, the alcohol concentration (V / V) is preferably 0 to 100% by volume, more preferably 20 to 80% by volume.

As an example of a preferable extraction method of the Coix seed extract, the Coix seeds are extracted with the extraction solvent at room temperature (for example, about 1 to 30 ° C.) or warmed (for example, about 30 to 100 ° C.) for 5 minutes to 7 days. There is a way to do this. As the extraction solvent at this time, any of water, alcohols, or a water-alcohol mixture is preferable, and an alcohol and a water-alcohol mixture are more preferable.
The extraction may be either room temperature extraction or warm extraction. Extraction at room temperature (preferably 10 to 30 ° C.) is preferably for 1 to 7 days. Further, it is preferable that the extraction is performed by heating (40 to 90 ° C.) for 1 to 12 hours.

The Coix seed extract of the present technology may be used as it is as an active ingredient, or may be appropriately treated by a known separation and purification method in order to remove impurities such as impurities or enhance the effect within a range that does not impair the effect. You may. For example, if necessary, it can be used after further purification treatment such as removal of extraction solvent, filtration, deodorization of ion exchange resin, and decolorization. In addition, a highly active fraction can be used by using a separation means such as liquid chromatography.

The honeybee extract of the present technology can be used as it is by using the extract alone or by mixing the extracts obtained by different extraction methods, or by diluting, concentrating or drying the extract, in a liquid, powdery or paste form. It can also be prepared and used.

Then, as shown in Examples below, the component (c) Coix seed extract of the present technology is (a) one or more selected from polyunsaturated fatty acids having 16 to 22 carbon atoms, and (b) vitamins. It has an effect of suppressing discoloration caused by containing one kind or two or more kinds selected from class E. That is, it is possible to provide a discoloration inhibitor of the composition containing the component (a) and the component (b), which contains the component (c) as an active ingredient. In addition, it is preferable that the composition containing the component (a) and the component (b) is a cosmetic or an external preparation for skin, based on the results of the following [Examples].

Further, the Coix seed extract of the component (c) of the present technology can be used as a method for suppressing discoloration due to the component (a) and the component (b). Further, it is possible to provide an Coix seed extract of the component (c) for suppressing discoloration of the component (a) and the composition containing the component (b). Further, in order to produce an agent or composition capable of suppressing discoloration due to the component (a) and the component (b), the Coix seed extract of the component (c) can be used.

The content or amount of the component (c) used in the present technology is preferably 0.00001% by mass to 5% by mass, more preferably 0.00005% by mass to 1% by mass, as the pure extract content in the composition. It is preferably 0.0001% by mass to 0.5% by mass, more preferably 0.0001% by mass.
In addition, the content or use of Poaceae Coix Coix Coix Coix lacryma-jobi var. Ma-yuen extract (preferably seed extract excluding seed coat) used in this technology. The amount of the pure extract in the composition is preferably 0.00001% by mass to 5% by mass, more preferably 0.00005% by mass to 1% by mass, and further preferably 0.0001% by mass to 0.5% by mass. preferable.

The pH of the composition, cosmetics or external preparation for skin, or the method for suppressing discoloration of the present technology is not particularly limited and can be appropriately adjusted with a pH adjuster.
The pH (20 ° C.) of the present technology is preferably 3.0 to 9.0, more preferably 4.0 to 8.0. Adjusting to the pH is advantageous because the component (c) Coix seed extract can easily suppress discoloration due to the component (a) and the component (b).
The pH (20 ° C.) after mixing the components (a) to (c) can be adjusted to preferably 3.0 to 9.0, more preferably 4.0 to 8.0. , It is preferable in that it is easy to suppress discoloration over time.
Further, since the component (a) and the component (b) are likely to be discolored in the presence of water, it is preferable to use the component (c) Coix seed extract in the composition containing water to suppress the discoloration.

The content (use) mass ratio (a) / (c) of the component (a) and the component (c) used in the present technology is preferably 0.1 to 1000, more preferably 0.3 to 500, and more. It is preferably 0.5 to 100.
The content (use) mass ratio (b) / (c) of the component (b) and the component (c) used in the present technology is preferably 0.003 to 10000, more preferably 0.01 to 1000, and more. It is preferably 0.1 to 100.

The content mass ratio (a) / (b) of the component (a) polyunsaturated fatty acid and the component (b) vitamin E used in the present technology is preferably 0.1 to 10000, more preferably 0. .3 to 1000, more preferably 0.5 to 500. By setting the range in such a range, the effects of the component (a) and the component (b) can be further exerted.

The "component (a) + component (b)" used in the present technology and the content (use) mass ratio of the component (c) [(a) + (b)] / (c) are preferably 0.1 to 1. It is 12000, more preferably 0.3 to 6000, and more preferably 0.5 to 3000. By setting the range to such a range, it is possible to suppress discoloration more satisfactorily while exerting the effects of the component (a) and the component (b) more satisfactorily.

The composition to be suppressed in discoloration of the present technology is not particularly limited, but by containing at least the component (a) and / or the component (b), at least the component (a) and the component (b) are contained. A composition exhibiting the effects of either one or both is preferable.
In addition, examples of the composition (preferably a cosmetic or an external preparation for skin) to be suppressed from discoloration of the present technology include an external preparation for skin, a cosmetic, a whitening agent, a deodorant, a detergent and the like. Of these, compositions used for skin care that are expected to have an emollient effect are preferable.

In addition, the compositions, cosmetics or external preparations containing the components (a) to (c) of the present technology are usually used for cosmetics and quasi-drugs as long as the effects of the present technology are not impaired. Ingredients used in various preparations such as external preparations for skin such as products and pharmaceuticals can be added. Examples of the components include water, oil agents, surfactants, metal soaps, gelling agents, powders, alcohols, water-soluble polymers, film-forming agents, resins, ultraviolet protective agents, inclusion compounds, antibacterial agents, and fragrances. , Deodorants, salts, pH adjusters, refreshing agents, animal / microorganism-derived extracts, plant extracts, blood circulation promoters, astringents, anti-fat leak agents, whitening agents, anti-inflammatory agents, active oxygen scavengers, cells Examples include activators, moisturizers, chelating agents, keratolytic agents, enzymes, hormones, vitamins and the like. From these, one kind or two or more kinds can be appropriately selected and used.

The composition, cosmetic or external preparation for skin containing the components (a) to (c) of the present technology can be obtained by a known production method.
Specifically, as cosmetics or skin external preparations of this technology, for example, basic cosmetics such as milky lotion, cream, lotion, beauty liquid, pack, all-in-one gel, sunscreen, cleaning agent, makeup base, BB cream, etc. Any form such as foundation, make-up cosmetics such as cheeks and lipsticks, hair nourishers, hair tonics, shampoos, hair cosmetics such as rinses, dispersions, ointments, liquids, aerosols, patches, poultices, liniments, etc. It may be. Cosmetics or external preparations used on the skin that are expected to have a whitening effect, an emollient effect, and the like are preferable.

Further, the discoloration inhibitor containing the component (c) of the present technology can be obtained by a known production method.
As an application of the discoloration inhibitor or discoloration suppression method of the present technology, it can also be used for cosmetics; quasi-drugs, external preparations for skin such as pharmaceuticals; oral preparations, injections, etc., and is particularly applied to the skin. It is suitable to be used for cosmetics or external preparations for skin.
In addition, examples of the form in which the discoloration inhibitor of the present technology is blended include cosmetics, quasi-drugs, and external preparations for skin such as pharmaceuticals. When the discoloration inhibitor of the present technology is blended in these forms, an appropriately acceptable component may be contained. Further, the discoloration inhibitor of the present technology can also be contained when these are produced.

Hereinafter, the present invention (the present technology) will be described in more detail with reference to Examples, Test Examples and the like, but the present invention (the present technology) is not limited to these Examples and the like.

<Sample preparation>
As linoleic acid, a commercially available product (manufactured by Wako Pure Chemical Industries, Ltd.) was purchased, and the free fatty acid linoleic acid was used.
As vitamin E, a commercially available product (manufactured by Eisai Co., Ltd.) was purchased, and naturally-derived vitamin E (plant-derived) was used. The commercial product is plant-derived vitamin E and contains at least α-tocopherol, γ-tocopherol and δ-tocopherol.
For each plant extract, the following Coix seed extract, rosemary extract, peony extract, and green tea extract were used.

<Manufacturing example 1. Preparation of Coix seed extract>
80% by volume ethanol aqueous solution (EtOH 8: water 2 (Vol / Vol)) 200 mL was added and extraction was performed at room temperature (10 to 30 ° C.) for 3 days. After filtering the extract, the solvent was distilled off and dried to obtain an Coix seed extract as pure extract. ..

<Manufacturing example 2. Preparation of rosemary extract>
Add 100 mL of 50% by volume 1,3-butylene glycol aqueous solution to 10 g of dried leaves of Rosemary (Scientific name: Rosmarinus Officinallis) of the Labiatae family, and extract at room temperature (10 to 30 ° C.) for 7 days. Was allowed to stand at about 5 ° C. for 7 days for aging and then filtered. The solvent of the filtrate was distilled off and dried to obtain a rosemary extract as a pure extract.
<Manufacturing example 3. Preparation of peony extract>
10 g of roots of Peony peony (scientific name: Paeonia lactiflora) of Peony family are chopped, 100 mL of 50% by volume 1,3-butylene glycol aqueous solution is added thereto, and the mixture is stirred while heating (about 50 to 70 ° C) for 4 hours. After extraction, it was filtered. The filtrate was allowed to stand at about 5 ° C. for 7 days for aging and then filtered. The solvent of the filtrate was distilled off and dried to obtain a peony extract as a pure extract.
<Manufacturing example 4. Preparation of green tea plant extract>
10 g of dried leaves of Camellia genus Camellia (scientific name: Camellia Sinensis) are chopped, 200 mL of 50% by volume ethanol aqueous solution is added, and extraction is performed for 2 days while stirring at room temperature (10 to 30 ° C.), and then extracted. After filtering the liquid, the solvent was distilled off and the mixture was dried to obtain a green tea extract as a pure extract.

<Color difference measurement method>
Glass bottles containing samples for 50 ° C and 5 ° C were prepared. The sample was dispensed into each glass bottle and covered as it was without replacing the air in the glass bottle. The glass bottles containing the samples were placed in incubators at 50 ° C. and 5 ° C., respectively, and allowed to stand for a certain period of time.
Transfer each sample that has been allowed to stand for a certain period of time to a glass cell for measurement, measure the L *, a *, and b * values using the Nippon Denshoku Color Difference Meter SE-2000, and from the color measurement value, ΔL = L ^* ( 5 ° C) &#8212; L ^* (50 ° C), Δa = a ^* (5 ° C) &#8212; a ^* (50 ° C), Δb = b ^* (5 ° C) &#8212; b ^* (50 ° C) ) Was calculated.
Next, ΔE was calculated according to the following formula, and the discoloration of the sample was evaluated by the value of ΔE.
ΔE = ((ΔL) ² + (Δa) ² + (Δb) ² ) ^1/2
L ^* is the "brightness index" (L axis = 0 to 100), and a ^* and b ^* are the "cromartie index" (a axis = -120 to +120, b axis = -120 to +120).

<Test Example 1: Stability (discoloration) test over time>
Samples of Test Examples 1 to 3 were prepared by mixing each component shown in Table 1. The pH (20 ° C) of the sample at the time of manufacture was 6.5, and the samples of Test Examples 1 to 3 were measured by the above color difference measuring method, and after standing for 4 days, stored at 5 ° C and stored at 50 ° C. The color difference ΔE from the product was determined.

In Test Example 2 sample of natural vitamin E alone and Test Example 3 sample of linoleic acid alone, which did not use linoleic acid and naturally derived vitamin E in combination, the color difference was less than 1 and no discoloration occurred. However, in Test Example 1 sample in which linoleic acid and naturally occurring vitamin E were used in combination, the color difference ΔE was quadrupled even in a short period of only 4 days after the start of the test, as compared with Test Example 2 sample and Test Example 3 sample, respectively. And 8 times or more, and slight discoloration (yellowing) was confirmed with the naked eye, so it was expected that the discoloration would further progress over time.

It is completely surprising that the combination of linoleic acid and vitamin E increased the color difference synergistically even on the 4th day, and the present inventors are investigating the mechanism, but this mechanism is Although it is still unknown, it is considered to be discoloration caused by polyunsaturated fatty acids and vitamin Es.

However, discoloration is not preferable in products such as cosmetics and external preparations for skin, and on the other hand, it is conceivable to reduce the content of either polyunsaturated fatty acids or vitamin Es, but both are cosmetics. It is an ingredient that is often used in products or external preparations for skin, and we want to use it in as much free content as possible.
Therefore, it is necessary to search for a component capable of suppressing discoloration of the composition containing these without worrying about the contents of polyunsaturated fatty acids and vitamin Es.

[Example 1: Toner]
Therefore, as shown in Table 2, the present inventors mixed various plant extracts in a lotion containing linoleic acid and naturally-derived vitamin E, and allowed the discoloration over time for 32 days. The color difference ΔE between the product stored at 5 ° C. and the product stored at 50 ° C. was used for evaluation. The pH (20 ° C.) of the cosmetic water at the time of production was 5.1. As Comparative Examples 2 to 4, a lotion containing a peony extract, a rosemary extract and a green tea extract instead of the Coix seed extract was evaluated.

<Evaluation of ΔE at 50 ° C and 5 ° C>
Less than 6 〇: Almost no discoloration 6 or more and less than 7.5 Δ: With discoloration 7.5 or more ×: Strong discoloration

Manufacturing method 1. 2. Mix components (1) to (4) and components (10) to (13) together and uniformly. Ingredients (5) to (9), (14) and (15) are uniformly mixed.
2 was gradually added while stirring 3.1, and the mixture was stirred for 5 minutes after the addition was completed to obtain a lotion.

Even in the actual product, the lotion, the product of Comparative Example 1 to which the plant extract was not added was discolored with time, and the stability over time, which is important for cosmetics and external preparations for skin, was not observed.
Regardless of which of the peony extract, rosemary extract and green tea extract is blended in the lotion, the discoloration becomes stronger as compared with the lotion of Comparative Example 1 to which these plant extracts are not added. Oops. It is well known that these plant extracts have an antioxidant effect, but it was considered that this discoloration cannot be suppressed only by the plant extracts having an antioxidant effect. For this reason, since there is no index as a discoloration suppressing component, it is considered that there is no choice but to derive it empirically, and various components were used.

The present inventors have found that, by chance, in the Coix seed extract, discoloration of a composition containing linoleic acid and naturally occurring vitamin E can be suppressed. Moreover, in the color difference evaluation, it has reached a level where there is no or almost no discoloration, which can be said to be a particularly remarkable effect. In addition, since a discoloration-suppressing effect was observed in a practical product containing components other than linoleic acid and naturally-derived vitamin E, it is considered that it can be applied to a wide range of products such as cosmetics, external preparations for skin, and other compositions.

[Example 3: Toner]
(Manufacturing method)
A. The following components (6) to (12) are mixed and dissolved.
B. The following components (1) to (5) and (13) are mixed and dissolved.
C. A was added to B and mixed to obtain a lotion.

(Ingredient) (%)
1 Glycerin 5.0
2 1,3-butylene glycol 5.0
3 Lactic acid 0.05
4 Sodium lactate 0.1
5 Coix seed extract (Note 1) 0.001
6 Polyoxyethylene (60 mol) hardened castor oil 1.2
7 Polyoxyethylene (40 mol) hardened castor oil 0.5
8 Ethanol 8.0
9 Linoleic acid 0.1
10 Synthetic Vitamin E (Note 2) 0.001
11 Methyl paraoxybenzoate 0.1
12 Fragrance 0.1
13 Remaining amount of purified water (Note 1) Coix seed extract from Production Example 1 (Note 2) Vitamin E Eisai (Eisai Food & Chemical Co., Ltd.)

The lotion of Example 3 had no discoloration and had good stability over time.

[Example 4: Oil-in-water emulsified lotion]
(Production method)
A: Ingredients (1) to (6) are heated and dissolved at 70 ° C.
B: Ingredients (7) to (9) are heated and dissolved at 70 ° C., and then added to A for emulsification.
C: The B is cooled to room temperature.
D: The C is subjected to high pressure treatment (processing pressure 200) with a microfluidizer.
E: Ingredients (10) to (15) were uniformly mixed with D to obtain an oil-in-water emulsified lotion.

(Ingredient) (%)
1 Linoleic acid 0.0001
2 Hydrogenated soybean phospholipids 2
3 Cholesterol 0.8
4 isostearic acid 3
5 Natural Vitamin E (Note 3) 0.1
6 Pentaerythrityl tetra-2 ethylhexanoate 1
7 glycerin 8
8 Dipropylene glycol 8
9 Purified water remaining amount 10 Coix seed extract (Note 4) 0.01
11 Glycosyl trehalose 5
12 Sodium pyrrolidone carboxylate 1
13 Ethanol 5
14 Methyl paraoxybenzoate 0.2
15 Fragrance 0.2
(Note 3) Emix 70L (manufactured by Eisai Food & Chemical Co., Ltd.)
(Note 4) 50% by volume 1,3-butylene glycol in 10 g of crushed seeds (Yokuinin) excluding the seed coat of Poaceae, Coix, and Coix lacryma-jobi var. Ma-yuen. After adding 1000 mL of an aqueous solution (1,3-butylene glycol 1: water 1 (Vol / Vol)) and extracting at room temperature (10 to 30 ° C.) for 5 days, the extract is filtered and the solvent is distilled off. Coix extract was obtained and used.

The lotion of Example 4 had no discoloration and had good stability over time.

[Example 5: Essence]
(Manufacturing method)
A. The following components (1) to (10) are mixed and dissolved.
B. The following components (11) to (17) are mixed and dissolved.
C. B was added to A and mixed to obtain a beauty essence.

(Ingredient) (%)
1 Dipropylene glycol 5.0
2 1,3-butylene glycol 8.0
3 Acrylic acid / alkyl methacrylate (C10-30)
Cross polymer (Note 5) 0.2
4 Xanthan gum 0.2
5 Remaining amount of purified water 6 Sodium hydroxide 2% solution 2.0
7 Coix seed extract (Note 6) 0.005
8 Sodium hyaluronate 0.01
9 Hydrolyzed elastin 0.01
10 Hydrolyzed collagen 0.1
11 Polyoxyethylene (60 mol) hardened castor oil 0.5
12 isostearic acid 0.2
13 Linoleic acid 0.001
14 Naturally-derived vitamin E (Note 3) 0.01
15 Methyl paraoxybenzoate 0.1
16 Ethanol 2.0
17 Fragrance 0.02
(Note 5) CARBOPOL 1382 (manufactured by LUBRIZOL)
(Note 6) Add 400 mL of purified water to 10 g of crushed seeds (Yokuinin) excluding the seed coat of Poaceae, Coix, and Coix lacryma-jobi var. Ma-yuen, and heat them (50). After stirring for 4 hours while stirring (~ 60 ° C.), the extract was filtered, and the solvent was distilled off to obtain an Coix extract for use.

The beauty essence of Example 5 had no discoloration and had good stability over time.

[Example 6: Beauty essence]
(Production method)
A: Ingredients (1) to (6) are heated and dissolved at 70 ° C.
B: After heating the components (7) to (19) at 70 ° C., the above A was added and emulsified and cooled to room temperature to obtain an oil-in-water beauty essence.

(Ingredient) (%)
1. 1. Linoleic acid 0.1
2. Ceramide 3 (Note 7) 0.1
3. 3. Glyceryl triethylhexanoate 3.0
4. Sorbitan sesquioleate 1.5
5. Dimethylpolysiloxane (Note 8) 2.0
6. dl-α-tocopherol (Note 9) 0.02
7. Glycerin 3.0
8.1,3-butylene glycol 5.0
9.1,2-Pentanediol 2.0
10. Xanthan gum 0.05
11. Remaining amount of purified water 12. Phosphoric acid 0.1
13. Sodium monohydrogen phosphate 0.1
14. Coix seed extract (Note 10) 0.00001
15. Carboxymethyl cellulose 2.0
16. Xanthan gum 0.1
17. Sodium hyaluronate 0.05
18. Disodium edetate 0.02
19. Fragrance 0.5
(Note 7) CERAMIDE3 (manufactured by Nikko Chemicals Co., Ltd.)
(Note 8) KF-96-10CS (manufactured by Shin-Etsu Chemical Co., Ltd.)
(Note 9) Made by DSM Nutrition Japan Co., Ltd. (Note 10) 10 g of crushed seeds of Poaceae, Coix, Coix lacryma-jobi var. Ma-yuen, and 50% by volume ethanol aqueous solution (Note 10) EtOH 1: 200 mL of water 1 (Vol / Vol) was added and extraction was performed at room temperature (10 to 30 ° C.) for 5 days, the extract was filtered, and the solvent was distilled off to obtain an Coix extract.

The beauty essence of Example 6 had no discoloration and had good stability over time.

[Example 7: Oil-in-water emulsion]
(Manufacturing method)
A. Ingredients (1) to (5) are uniformly dissolved and mixed at 70 ° C.
B. The components (6) to (14) are uniformly dissolved and mixed at 80 ° C.
C. B is added to A and emulsified at 70 ° C.
D. After the components (15) to (19) were added to and mixed with C, the mixture was cooled to 40 ° C. to obtain an oil-in-water emulsion.

(Ingredient) (%)
1 1,3-butylene glycol 5.0
2 Dibutylene glycol 5.0
3 Remaining amount of purified water 4 Coix seed extract (Note 11) 0.5
5 Sodium hydroxide 2% solution 0.2
6 N-myristoylation-L-glutamic acid 0.2
7 Polyoxyethylene (10 mol) hardened castor oil 0.2
8 Macadamia nut oil fatty acid phytosteryl 1.0
9 Tri (caprylic acid / caprylic acid) glyceryl 0.2
10 Linoleic acid 0.1
11 Natural Vitamin E (Note 3) 1
12 N-stearoyl phytosphingosine 0.1
13 Tocopherol acetate 0.01
14 Stearyl alcohol 0.5
15 1,2-pentanediol 0.1
16 Carboxyvinyl polymer (Note 12) 0.15
17 (Na acrylate / Na acryloyl dimethyl taurine)
Copolymer (Note 13) 2
18 Ethanol 5.0
19 Fragrance 0.1
(Note 11) 50% by volume ethanol aqueous solution (EtOH 1: water 1 (Vol / Vol)) in 10 g of crushed leaves of Poaceae, Coix, and Coix lacryma-jobi var. Ma-yuen. ) 200 mL was added and extraction was performed at room temperature (10 to 30 ° C.) for 5 days, the extract was filtered, and the solvent was distilled off to obtain an Coix seed extract.
(Note 12) CARBOPO941 (manufactured by LUBRIZOL ADVANNCED MATERIALS)
(Note 13) SIMULGEL EG (manufactured by SEPIC)

The emulsion of Example 7 had no discoloration and had good stability over time.

[Example 8: Emulsion]
(Manufacturing method)
A: Ingredients (1) to (8) are heated and dissolved at 70 ° C.
B: Ingredients (9) to (15) are heated at 70 ° C. and then added to A for emulsification.
C: After cooling the B to room temperature, the components (16) to (18) were added to obtain an oil-in-water beauty essence.

(Ingredient) (%)
1. 1. Linoleic acid 0.6
2. α-linolenic acid (Note 14) 0.4
3. 3. Hydrogenated soybean phospholipid 1.2
4. δ-tocopherol (Note 15) 0.003
5. α-tocopherol (Note 16) 0.002
6.1,3-butylene glycol 16.0
7. Isotridecyl isononanoate 1.0
8. Triethylhexanoin 1.0
9. Remaining amount of purified water 10. Citric acid 0.1
11. Sodium citrate 0.1
12. Appropriate amount of sodium hydroxide 13. Coix seed extract (Note 17) 0.0001
14. Hydroxyproline 0.01
15. Phenoxyethanol 0.5
16. Ethanol 8
17. Carboxyvinyl polymer (Note 12) 0.2
18. Xanthan gum 0.2
(Note 14) Wako Junyaku Co., Ltd. (Note 15) Sigma Aldrich Co., Ltd. (Note 16) Sigma Aldrich Co., Ltd. (Note 17) Gramineae (Poaceae) Coix Coix Coix lacryma-jobi var. Ma -Yuen) 100 mL of 100% ethanol was added to 10 g of crushed seeds and extracted at room temperature (10 to 30 ° C.) for 2 days. After filtering the extract, the solvent was distilled off to obtain the Coix extract. Obtained.

The emulsion of Example 8 had little discoloration and good stability over time.

[Example 9: Cream]
(Manufacturing method)
A: Ingredients (1) to (10) are heated and dissolved at 70 ° C.
B: After heating the components (11) to (17) at 70 ° C., the above A is added and emulsified.
C: The B was cooled to room temperature, and (18) to (20) were added and mixed to obtain an oil-in-water cream.

(Ingredient) (%)
1. 1. Linoleic acid 1
2. Docosahexaenoic acid (DHA) (Note 18) 1
3. 3. Polyoxyethylene monooleate (20) Sorbitan 2.0
4. Polyoxyethylene alkyl ether phosphoric acid (Note 19) 0.3
5. Propylene Glycol Dicaprate 1.7
6. Squalene 3.5
7. Setostearyl alcohol 3.0
8. Vaseline 2.0
9. Jojoba oil 1.0
10. Synthetic vitamin E (Note 2) 3
11.1, 3-butylene glycol 2.0
12. Glycerin 10.0
13. Carboxyvinyl polymer (Note 20) 0.3
14. Carrageenan 0.1
15. Appropriate amount of sodium hydroxide 16. Remaining amount of purified water 17. Coix seed extract (Note 1) 1
18. Methyl paraoxybenzoate 0.3
19. Ethanol 7
20. Fragrance 0.2
(Note 1) Coix seed extract of Production Example 1 (Note 18) manufactured by Wako Pure Chemical Industries, Ltd. (Note 19) NIKKOL-DDP10 (manufactured by Nikko Chemicals Co., Ltd.)
(Note 20) Hibiswaco 105 (manufactured by Wako Pure Chemical Industries, Ltd.)

The cream of Example 9 had little discoloration and good stability over time.

[Example 10: Sunscreen charge]
(Manufacturing method)
A. The components (10) to (12) are dispersed in three rolls.
B. The A and the components (1) to (9) are heated to 70 ° C.
C. Ingredients (13) to (18) are heated to 70 ° C.
D. B is added to C and emulsified.
E. The D was cooled to room temperature and cooled to obtain a creamy oil-in-water emulsified milk sunscreen.

(Ingredient) (%)
1. 1. Setostearyl alcohol 1
2. Liquid paraffin 3
3. 3. Polyoxyethylene monooleate (20) Sorbitan 2
4. Polyoxyethylene (60 mol) hardened castor oil 1
5. Polyoxyethylene alkyl ether phosphoric acid (Note 19) 0.1
6. Acrylic-silicone graft copolymer solution (Note 21) 1
7. Octyl paramethoxycinnamic acid 10
8. Natural Vitamin E (Note 3) 0.001
9. Linoleic acid 0.05
10. Myristic acid (3%) Methylhydrogenpolysiloxane (15%) treated Zinc oxide (particle size 20 nm) 10
11. Decamethylcyclopentasiloxane 15
12. (Dimethicone / Phenyldimethicone) Crosspolymer mixture (solid content 15%) (Note 22) 10
13. Stearoyl Methyl Taurine Sodium 2.0
14. (Sodium acrylate / sodium acryloyldimethyltaurine) copolymer (Note 23) 4
15.1,3-butylene glycol 8
16. Polyethylene glycol (Note 24) 5
17. Remaining amount of purified water 18. Coix seed extract (Note 1) 0.4
(Note 1) Coix seed extract from Production Example 1 (Note 21) KP545L (manufactured by Shin-Etsu Chemical Co., Ltd.)
(Note 22) KSG-18 (manufactured by Shin-Etsu Chemical Co., Ltd.)
(Note 23) SIMULGEL EG1 (essential 37.5% manufactured by SEPPIC)
(Note 24) PEG400 (manufactured by Sanyo Chemical Industries, Ltd.)

The sunscreen of Example 10 had no discoloration and had good stability over time.

[Example 11: Liquid foundation]
(Manufacturing method)
A: The components (15) to (22) are dispersed by a three-roller.
B: Ingredients (1) to (9) are heated at 90 ° C. and uniformly mixed.
C: (10) heated to about 90 ° C. was added to the B, emulsified, cooled, and (11) to (14) were added.
D: A is mixed with C. E: The D is filled in a container to obtain an oil-in-water liquid foundation.

(Ingredient) (%)
1. 1. Polyoxyethylene (60) hardened castor oil 0.5
2. Polyoxyethylene tetraoleate (20) sorbitol 1
3. 3. (Dimethicone / Vinyl Dimethicone)
Cross-polymer mixture (solid content 5%) (Note 25) 10
4. Methyltrimethicone 5
5. Octyl methoxycinnamic acid 3
6. Bisethylhexyloxyphenol Methoxyphenyltriazine (Note 26) 5
7. Acrylic-silicone graft copolymer solution (Note 27) 5
8. Linoleic acid 0.1
9. Natural Vitamin E (Note 3) 0.00001
10. Remaining amount of purified water 11. (Sodium Acrylate / Acryloyl Dimethyl Taurine Sodium) Copolymer (Note 19) 1
12. Phenoxyethanol 0.3
13.1,3 Butylene glycol 10
14. Coix seed extract (Note 1) 0.0001
15. Alkyl acrylate polymer emulsion (Note 28) 3
16. Triethanolamine 3.5
17. Black iron oxide 0.2
18. Bengala 1.3
19. Titanium oxide 8
20. Yellow iron oxide 0.5
21. Sericite 5
22. Red No. 202 0.2
(Note 1) Coix seed extract from Production Example 1 (Note 3) Emix 70L (manufactured by Eisai Food & Chemical Co., Ltd.)
(Note 25) KSG-15 (manufactured by Shin-Etsu Chemical Co., Ltd.)
(Note 26) TINOSORB S (manufactured by BASF)
(Note 27) KP-541 (manufactured by Shin-Etsu Chemical Co., Ltd.)
(Note 28) Ultrasol V-280C (manufactured by Aica Kogyo Co., Ltd.)

The liquid foundation of Example 11 had no discoloration and had good stability over time.

[Example 12: Invasion mask]
(Manufacturing method)
A: Ingredients (1) to (6) are heated and dissolved at 70 ° C.
B: Ingredients (7) to (11) are heated and dissolved at 70 ° C., and then added to A for emulsification.
C: The B was cooled to room temperature, (12) to (14) were added and mixed to obtain an oil-in-water emulsion.
D: The C was impregnated into a non-woven fabric to obtain an impregnation mask (component) (%).
1. 1. Dipropylene glycol 10
2. Polyoxyethylene (40) hardened castor oil 0.5
3. 3. Methyl paraoxybenzoate 0.1
4. Squalene 0.5
5. Linoleic acid 0.04
6. Natural Vitamin E (Note 3) 0.01
7. Glycerin 10
8. Remaining amount of purified water 9. Hot spring water 1
10. Appropriate amount of sodium hydroxide 11. Coix seed extract (Note 1) 0.0001
12. Carboxyvinyl polymer (Note 20) 0.1
13. Xanthan gum 0.05
14. Fragrance 0.2
(Note 1) Coix seed extract from Production Example 1 (Note 3) Emix 70L (manufactured by Eisai Food & Chemical Co., Ltd.)
(Note 20) Hibiswaco 105 (manufactured by Wako Pure Chemical Industries, Ltd.)

The impregnated mask of Example 12 had no discoloration and had good stability over time.

[Example 13: Hand cream]
(Manufacturing method)
A: Ingredients (1) to (12) and (24) are mixed and dissolved at 70 ° C.
B: Ingredients (13) to (23) are mixed and dissolved at 70 ° C. C: A is added to B while stirring to emulsify D: C is cooled to room temperature to obtain a hand cream.

(Ingredient) (%)
1. 1. Polyethylene glycol monostearate 2
2. Glycerin monostearate 3
3. 3. Setostearyl alcohol 2
4. Behenyl alcohol 3
5. Liquid paraffin 4
6. Vaseline 10
7. Di (octyldodecyl / phytosteryl / behenyl) lauroyl glutamate (Note 29) 2
8. Oleyl oleate 1
9. Coenzyme Q10 0.2
10. Linoleic acid 0.04
11. Natural Vitamin E (Note 3) 0.01
12. Retinol palmitate 0.3
13. Methyl paraoxybenzoate 0.2
14. Concentrated glycerin 5
15.1.3. Butylene glycol 10
16. Sodium monohydrogen phosphate 0.1
17. Sodium dihydrogen phosphate 0.1
18. Disodium edetate 0.1
19. Appropriate amount of sodium hydroxide 20. Remaining amount of purified water 21. Coix seed extract (Note 1) 0.0001
22. Royal jelly extract 0.1
23. Magnesium Ascorbic Acid Phosphate 0.5
24. Fragrance 0.2
(Note 1) Coix seed extract from Production Example 1 (Note 3) Emix 70L (manufactured by Eisai Food & Chemical Co., Ltd.)
(Note 29) Eldu PS-304 (manufactured by Ajinomoto Co., Inc.)

The hand cream of Example 13 had no discoloration and had good stability over time.

[Example 14: Toner]
(Manufacturing method)
A. The following components (6) to (12) are mixed and dissolved.
B. The following components (1) to (5) and (13) are mixed and dissolved.
C. A was added to B and mixed to obtain a lotion.

(Ingredient) (%)
1 Glycerin 5.0
2 1,3-butylene glycol 5.0
3 Lactic acid 0.05
4 Sodium lactate 0.1
5 Coix plant extract (Note 1) 0.001
6 Polyoxyethylene (60 mol) hardened castor oil 1.2
7 Polyoxyethylene (40 mol) hardened castor oil 0.5
8 Ethanol 8.0
9 α-linolenic acid (Note 14) 0.1
10 Synthetic Vitamin E (Note 2) 0.001
11 Methyl paraoxybenzoate 0.1
12 Fragrance 0.1
13 Remaining amount of purified water (Note 1) Coix plant extract of Production Example 1

The lotion of Example 14 had no discoloration and had good stability over time.

[Example 15: Oil-in-water emulsion]
(Manufacturing method)
A. Ingredients (1) to (5) are uniformly dissolved and mixed at 70 ° C.
B. The components (6) to (14) are uniformly dissolved and mixed at 80 ° C.
C. B is added to A and emulsified at 70 ° C.
D. After the components (15) to (19) were added to and mixed with C, the mixture was cooled to 40 ° C. to obtain an oil-in-water emulsion.

(Ingredient) (%)
1 1,3-butylene glycol 5.0
2 Dibutylene glycol 5.0
3 Remaining amount of purified water 4 Coix seed plant extract (Note 11) 0.5
5 Sodium hydroxide 2% solution 0.2
6 N-myristoylation-L-glutamic acid 0.2
7 Polyoxyethylene (10 mol) hardened castor oil 0.2
8 Macadamia nut oil fatty acid phytosteryl 1.0
9 Tri (caprylic acid / caprylic acid) glyceryl 0.2
10 Docosahexaenoic acid (DHA) (Note 18) 0.1
11 Natural Vitamin E (Note 3) 1
12 N-stearoyl phytosphingosine 0.1
13 Tocopherol acetate 0.01
14 Stearyl alcohol 0.5
15 1,2-pentanediol 0.1
16 Carboxyvinyl polymer (Note 12) 0.15
17 (Na acrylate / Na acryloyl dimethyl taurine)
Copolymer (Note 13) 2
18 Ethanol 5.0
19 Fragrance 0.1
(Note 11) Coix seed extract of Example 7.

The emulsion of Example 15 had no discoloration and had good stability over time.

Claims (6)

The following components (a) and (b), which contain Coix seed extract as an active ingredient;
(A) One or more selected from polyunsaturated fatty acids having 16 to 22 carbon atoms (b) An agent that suppresses discoloration of a composition containing one or more selected from vitamin Es. The agent for suppressing discoloration of the composition according to claim 1, wherein the component (a) is linoleic acid. The agent for suppressing discoloration of the composition according to claim 1 or 2, wherein the component (b) is vitamin E. The agent for suppressing discoloration of the composition according to any one of claims 1 to 3, wherein the content mass ratio (a) / (b) of the component (a) and the component (b) is 0.1 to 10000. The content mass ratio of "component (a) + the component (b)" and the Job's tears extract [(a) + (b) ] / the Coix extract, of claims 1 to 4 is 0.1 to 12,000 An agent that suppresses discoloration of the composition according to any one of the above items. A method for suppressing discoloration of a composition containing the following component (a) and component (b) using Coix seed extract.
(A) One or more selected from polyunsaturated fatty acids having 16 to 22 carbon atoms (b) One or more selected from vitamin Es