JP2001192328A - Emulsified cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cosmetic which controls an unpleasant smell, has excellent oxidation stability, and further has an excellent skin roughness-improving effect and an excellent moisture-retaining effect. SOLUTION: This emulsified cosmetic characterized by containing (A) 0.001 to 10 wt.% of docosahexaenoic acid, eicosapentaenoic acid, or their derivatives, and (B) 0.001 to 5 wt.% of shogool or a ginger seasoning.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an emulsified cosmetic,
More specifically, it is an emulsified cosmetic for the skin, which is excellent in masking effect of raw material odor and stability over time,
The present invention relates to a cosmetic having an excellent moisturizing effect on the skin, imparting an abrasion to the skin, and an excellent effect of improving rough skin.

[0002]

2. Description of the Related Art The surface of human skin (skin) is covered with a sebum film, and the evaporation of water is appropriately suppressed. Insufficient skin moisture tends to cause skin roughness and wrinkles, so keeping the skin moisture in an appropriate range
This is very important for skin health. by the way,
The sebum film flows by washing the face and bathing,
Skin moisture is easily lost. For this reason, lotions, milky lotions, creams, essences, and the like are used to supplement the moisture of the skin after washing the face or taking a bath. Among them, emulsified cosmetics such as emulsions and creams are widely used because they protect the moisture of the skin and maintain flexibility.

[0003] By the way, emulsified cosmetics include oils such as hydrocarbon oils such as liquid paraffin and solid paraffin, natural fats and oils such as sunflower oil and olive oil, synthetic triglycerides such as glyceryl tri-2-ethylhexanoate, isopropyl myristate, and the like. Isopropyl palmitate,
It contains an ester oil such as cetyl palmitate, a silicone oil and the like, and therefore has an odor peculiar to oil. In particular, there is a problem that oil containing an unsaturated chain is oxidatively degraded, and the odor is deteriorated over time.

[0004] In recent years, various physiologically active effects of docosahexaenoic acid (hereinafter, referred to as DHA) and eicosapentaenoic acid (hereinafter, referred to as EPA), which are polyunsaturated fatty acids, have attracted attention. Combined cosmetic for preventing skin aging (Japanese Unexamined Patent Publication No. 5-28684)
No. 6) or a therapeutic agent for allergic skin diseases containing DHA and EPA (JP-A-8-109128).

However, polyunsaturated fatty acids such as DHA and EPA and derivatives thereof have poor oxidative stability over time and have a peculiar unpleasant odor, so that their use in cosmetics is limited. There is a problem, and the effect of improving skin roughness and moisturizing effect is not sufficiently obtained. As a method of masking this unpleasant odor, it has been attempted to use a citrus juice such as lemon or sudachi, a method using a flavor, or to add an antioxidant such as vitamin E, tea extract, or vitamin C to the skin. When applied, the area of the formulation that comes into contact with the air becomes extremely large, so that the fact is that suppression of unpleasant odor for a long time has not yet been solved.

Accordingly, there is a need for a cosmetic composition which suppresses the unpleasant odor of polyunsaturated fatty acids such as DHA and EPA, has excellent oxidative stability, and further has an effect of improving skin roughness and a moisturizing effect.

[0007]

The present invention relates to an emulsified cosmetic for the skin, and more particularly, it has an excellent masking effect of raw material odor, an excellent moisturizing effect on the skin and an excellent stability over time, and also has an excellent effect on skin. The present invention relates to a cosmetic that gives an excellent effect of improving rough skin.

[0008]

Means for Solving the Problems The present inventors have conducted studies to solve the above problems, and found that DHA, EP
By combining A or a derivative thereof and ginger oil or a ginger flavor at a specific ratio, a daily emulsified cosmetic was obtained. That is, the present invention relates to an emulsified cosmetic containing an oil component and an emulsifier, wherein (A) 0.001 to 10% by weight of docosahexaenoic acid, eicosapentaenoic acid or a derivative thereof and (B) ginger oil or ginger. The present invention relates to an emulsified cosmetic containing a flavoring agent in an amount of 0.001 to 5% by weight.

In a preferred embodiment, the emulsified cosmetic composition of the present invention further contains (C) 0.00001 to 2% by weight of vitamin A or a derivative thereof.

[0010] In a preferred embodiment, the emulsified cosmetic composition of the present invention further comprises (D) an extract of Mokutsu (Mokutsu) or Astragalus as a dry residue.
2% by weight is contained.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS DHA, EP used in the present invention
As A or a derivative thereof, DHA or EPA-containing oil obtained by extracting fish oil as it is, or DHA, EPA or a derivative thereof separated and purified from fish oil by a conventional method is used. Examples of the fish oil include DH such as cod, sardine, saury, herring, mackerel, and tuna.
Fish oils known to be rich in A or EPA are mentioned, including liver oil. The method for extracting fish oil is not particularly limited, and a method appropriately used by those skilled in the art when extracting fats and oils such as a critical gas extraction method, a molecular distillation method, and a liquid chromatography method is used. DHA or EPA can be easily obtained by hydrolyzing natural triglycerides obtained from fish oil to remove the glycerin moiety. DH
As the salt of A or EPA, a sodium or potassium salt can also be selected.

The derivatives of DHA or EPA used in the present invention include lower alkyl esters of DHA or EPA. These can be produced by dehydrating and condensing an aliphatic lower alcohol with DHA or EPA. Examples of the lower alkyl esters of DHA or EPA include, for example, methyl esters, ethyl esters, propyl esters, isopropyl esters, butyl esters, and isobutyl esters of DHA or EPA, and ethyl esters and methyl esters are preferred because they have high versatility. . DHA, EPA or derivatives thereof may be used alone or in combination of two or more.

The emulsified cosmetic of the present invention includes DHA, EPA
Alternatively, 0.001 to 10% by weight of a derivative thereof is contained, preferably 0.01 to 8% by weight, and more preferably 0.1 to 5% by weight. If the amount is less than 0.001% by weight, the moisturizing effect, the effect of giving a beam, the effect of improving skin roughness, and the effect of hiding wrinkles are small, and if it exceeds 10% by weight, there is a problem in stability over time.

The ginger oil used in the emulsified cosmetic of the present invention is a natural essential oil obtained from the rhizome of ginger (Amomum zingiber L.) belonging to the family Ginger. This ginger oil (natural essential oil) includes gingiberene (zingiberene), zingiberol (zingiberol),
Aromatic volatile oil components such as camphene, cineole and linalool, and zingerone and shogao
l) Contains pungent ingredients.

[0015] The ginger flavoring used in the present invention refers to a blended flavoring obtained by mixing the above-mentioned components of the natural essential oil and / or compounds related to the components of the natural essential oil.
In other words, the ginger flavoring component only needs to contain a component of the above-mentioned natural essential oil, and a compound having a similar structure to the component and having the effect of the present invention (an analogous compound). In addition, other compounds necessary for preparing a ginger-like flavor may be included as long as the components or compounds having the effects of the present invention are included.

In the present invention, ginger oil or ginger flavor may be used alone, or ginger oil and ginger flavor may be used as a mixture. The ginger oil or the ginger flavor may be used alone or in combination of two or more.

The compounding amount of the ginger oil or the ginger flavor to the emulsified cosmetic is 0.001 to 5% by weight,
Preferably it is 0.005 to 3% by weight, more preferably 0.01 to 2% by weight. If it is less than 0.001% by weight, the masking effect cannot be sufficiently exerted, and if it exceeds 5% by weight, the hue deteriorates with time.

[0018] The emulsified cosmetic of the present invention may contain vitamin A or a derivative thereof. Examples of vitamin A or a derivative thereof include retinol, retinol esters (for example, retinol acetate, retinol palmitate,
Retinol propionate), 3-dehydroretinol, retinal, retinoic acid, retinoic acid salts, retinoic acid esters (for example, ethyl retinoic acid, butyl retinoic acid, etc.), retinyl phosphoric acid or a salt thereof, and vitamin A oil. . Considering storage stability, retinol palmitate and vitamin A oil are preferred. Vitamin A or a derivative thereof may be used alone or in combination of two or more.

The compounding amount of vitamin A or a derivative thereof to the emulsified cosmetic is 0 to 2% by weight,
The content is preferably 1 to 2% by weight, more preferably 0.0000
5 to 1.5% by weight, more preferably 0.0001 to 1%
% By weight. By using vitamin A or a derivative thereof, the effect of improving skin roughness is enhanced.

[0020] The emulsified cosmetic composition of the present invention may contain an extract of Kimitsu or Astragalus. In the present invention, the extracted extracts of Kindori and Astragalus mean the extraction solution itself or its concentrate. The extract of Kinatsu is obtained by extracting the vine stem of Kinatsu as it is or after drying. In addition, the extract of Astragalus is extracted from the whole plant or seed of Astragalus, as it is or after drying. Extraction of hydrocarbons,
One or two selected from esters, ketones, ethers, halogenated hydrocarbons, alcohols, and water
Extract by soaking in more than one solution or heating to reflux with these solutions. An extract of Kinatsu or Astragalus extracted with one or more of water, ethanol, propylene glycol, isopropyl alcohol and 1,3-butylene glycol is preferred, and an extract of Astragalus or Astragalus extracted with water is more preferred. . The extract of Kindori or Astragalus may be used alone or in combination.

The compounding amount of the extracted extract of Kondo or Astragalus in the emulsified cosmetic is 0 to 2% by weight as a dry residue, preferably 0.00005 to 2% by weight, more preferably 0.0001 to 1. It is 5% by weight, more preferably 0.0005 to 1% by weight. The use of the extract of Kodomo or Astragalus enhances the moisturizing effect, the effect of giving a skin abrasion, and the effect of improving skin roughness.

The emulsion cosmetic of the present invention may contain additives commonly used in cosmetics as long as the performance of the present invention is not impaired. For example, ethanol, lower alcohols such as isopropyl alcohol, higher alcohols, silicone derivatives, protein derivatives, sunflower oil, jojoba oil, olive oil, castor oil, lanolin, lecithin, octyldodecyl myristate, oily bases such as fatty acids,
Anionic surfactants such as soaps, acylmethyltaurine salts, amide ether sulfates, amphoteric surfactants such as amide amino acid salts, amidopropyldimethylaminoacetic acid betaine, polyoxyethylene alkyl ethers, polyethylene glycol fatty acid esters, Nonionic surfactants such as polyoxyethylene sorbitan fatty acid esters and alkanolamides; cationic surfactants such as alkyltrimethylammonium chloride; semipolar surfactants such as alkyldimethylamine oxide;
Acids and alkalis which are H regulators, disinfectants, chelating agents,
An antioxidant, an ultraviolet absorber, a natural extract derived from animals and plants, a pigment, a fragrance, and the like can be blended.

[0023]

Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. In addition, the used Kindori extract was prepared as follows. That is, the stalk of the tree is dried and crushed, and the crushed material 3
To 0 g, 300 ml of water was added, heated to 70 ° C., digested for 3 hours while refluxing, and then filtered to obtain an extract of wood through. In addition, the dried residue when this Kinatsu extract was dried at 105 ° C. was 1.3% by weight. As the extract of Astragalus extract (Falco Rex Astragalus Ichimaru Falcos Co., Ltd.) was used. 10 lotus extract extracts
The dried residue when dried at 5 ° C. was 1.1% by weight.

The evaluation items and the evaluation method of the prepared emulsified cosmetic are as follows. (1) Masking Effect Twenty women were panelists, and the odor immediately after applying about 1 g of the milky lotion to the inner part of the forearm was evaluated by a sensory test according to the following criteria and scored. 2 points: When the raw material odor or unpleasant odor is hardly felt during use. 1 point: When a slight raw odor or unpleasant odor is felt during use. 0 point: When a raw material odor or an unpleasant odor is clearly felt during use. The total score of the 20 people was determined and judged as follows. ：: Good masking effect (30 points or more). X: Poor masking effect (less than 30 points).

(2) Persistence of Masking Effect Twenty women were panelists. About 1 g of the emulsion was applied to the inner part of the forearm, and the odor 5 hours after the application was evaluated by a sensory test according to the following criteria and scored. . 2 points: When the raw material odor or unpleasant odor is hardly felt during use. 1 point: When a slight raw odor or unpleasant odor is felt during use. 0 point: When a raw material odor or an unpleasant odor is clearly felt during use. The total score of the 20 people was determined and judged as follows. ：: Good persistence of masking effect (30 points or more). X: Poor persistence of the masking effect (less than 30 points).

(3) Moisturizing Effect Twenty women were panelists. After washing their faces, the emulsion was used. The skin moisture after 2 hours was evaluated according to the following criteria and scored. 2 points: When the skin feels moist. 1 point: When the skin feels slightly moist. 0 point: When feeling that the moisture of the skin is not enough. The total score of the 20 people was determined and judged as follows. ：: Good moisturizing effect (30 points or more). ×: Poor moisturizing effect (less than 30 points).

(4) Effect of improving rough skin Twenty women who had rough skin were used as panelists,
The skin condition when used twice a day for two consecutive weeks was evaluated according to the following criteria and scored. 2 points: When it is felt that the rough skin is clearly improved. 1 point: When the user feels that the rough skin has been slightly improved. 0 point: When the skin condition is hardly changed or rough skin is felt to be worse. The total score of the 20 people was determined and judged as follows. ：: There is a skin roughness improving effect (30 points or more). ×: No effect of improving rough skin (less than 30 points).

(5) Effect of giving skin to the skin Twenty women were panelists. After washing the face, the emulsion was used. The skin after 2 hours was evaluated according to the following criteria.
Scored. 2 points: When feeling that there is a streak on the skin. 1 point: If you feel that the skin is slightly stuck. 0 point: When the skin feels insufficient. The total score of the 20 people was determined and judged as follows. ：: There is an effect of giving a skin patch (30 points or more). ×: No effect of giving a skin patch (less than 30 points).

(6) Stability over time (odor) The sample was sealed in a transparent glass container and stored at 40 ° C. for one month, and the odor after one month was evaluated by a sensory test by 20 persons according to the following criteria. Was scored. 2 points: When almost no unpleasant odor was felt, which was almost the same as immediately after the start of the test. 1 point: When the user felt that the unpleasant odor was slightly higher than immediately after the start of the test. 0 point: when the user felt that the unpleasant odor was clearly higher than immediately after the start of the test. The total score of the 20 people was determined and judged as follows. ：: Good stability over time (odor) (30 points or more). ×: Poor stability over time (odor) (less than 30 points).

(7) Stability over time (hue) The cosmetic is sealed in a transparent glass container and sealed at 0 ° C, 25 ° C, 40 ° C.
The solution was stored at a temperature of 3 ° C. for 3 months, and its hue was observed and evaluated according to the following three grades. ：: Good stability (no change in hue compared to immediately after preparation) Δ: Slightly poor stability (slight change in hue compared to immediately after preparation) ×: Poor stability (compared to immediately after preparation) The hue has clearly changed in comparison.)

(Examples 1 to 8 and Comparative Examples 1 to 6) Emulsions shown in Tables 2 and 3 were prepared by using the components shown in Table 1 as common components a, and evaluated by the above evaluation methods. Table 2 shows the results
To Table 3 below.

[0032]

[Table 1]

[0033]

[Table 2]

[0034]

[Table 3]

The emulsified cosmetics of Examples 1 to 8 of the present invention have an excellent masking effect of the raw material odor, an excellent moisturizing effect on the skin and a stability with time, as well as an effect of giving the skin a sticking effect and improving the rough skin. It was excellent. That is, in Comparative Example 1, since the component (A) is mixed in a small amount, the moisturizing effect, the skin roughness improving effect, and the effect of giving a beam are weakened. In Comparative Example 2, since the component (A) was compounded in a large amount, the masking effect was weak, and there was a problem in the stability of the hue and odor with time. In Comparative Example 3, since the component (B) was blended in a smaller amount than the range of the present invention, the masking effect was small, and in Comparative Examples 4 and 5, oils having different fragrances were used instead of the component (B). Therefore, although the masking effect is slightly high, the persistence of the masking effect is weak. In Comparative Example 5, there is a problem in hue stability because the component (B) is blended in an amount larger than the range of the present invention.

(Examples 9 to 12, 13 to 16) The components shown in Table 4 were used as the common component b, and Examples 9 to 1 in Table 5 were used.
An oil-in-water type cream (O / W type) shown in No. 2 was prepared.

[0037]

[Table 4]

Using the components shown in Table 5 as common components c, water-in-oil creams (W / O type) shown in Examples 13 to 16 of Table 5 were prepared.

[0039]

[Table 5]

Table 6 shows the evaluation results of Examples 9 to 16.

[0041]

[Table 6]

The oil-in-water creams of Examples 9 to 12 (O /
W-type) were all excellent in masking effect of raw material odor, excellent in moisturizing effect on skin and stability over time, and also excellent in effect of giving skin peel and improving rough skin.

The water-in-oil creams of Examples 13 to 16 (W
(/ O type) were excellent in masking effect of raw material odor, excellent in moisturizing effect on skin and stability over time, imparted skin to skin, and excellent in skin roughness improving effect.

[0044]

As described above, the emulsified cosmetic of the present invention is excellent in masking effect of raw material odor, excellent in moisturizing effect on skin and stability over time, and gives skin abrasion and improves skin roughness. Was excellent.

Continued on front page F-term (reference) 4C083 AA082 AA111 AA112 AA122 AB362 AC022 AC072 AC102 AC122 AC251 AC252 AC352 AC392 AC422 AC432 AC472 AC482 AC542 AD092 AD152 AD352 AD621 AD622 CC01 CC02 CC05 DD32 DD33 EE01 EE12

Claims (3)

[Claims] 1. An emulsified cosmetic containing an oil component and an emulsifier, wherein (A) 0.001 to 10% by weight of docosahexaenoic acid, eicosapentaenoic acid or a derivative thereof, and (B) ginger oil or An emulsified cosmetic, comprising 0.001 to 5% by weight of a ginger flavoring agent. 2. The emulsion cosmetic according to claim 1, further comprising (C) 0.00001 to 2% by weight of vitamin A or a derivative thereof. 3. The method further comprises: (D) extracting an extract of Mokutsu (Mokutsu) or Astragalus as a dry residue;
The emulsified cosmetic according to claim 1 or 2, wherein the emulsified cosmetic is contained in an amount of 0.5 to 2% by weight.