JP2000072647A - Skin lotion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a skin lotion giving a light touch on its use, not leaving tackiness after used, having excellent moisture retainability, its sustainability, and skin roughness-preventing and improving effect, and further having excellent wrinkle-removing and preventing effect, excellent stability with the passage of time and excellent restorability from a low temperature stored state. SOLUTION: This skin lotion contains (a) 0.005-5 wt.% of a Rosaceae plant juice or an Astragalus sinicus extract, (b) 0.001-3 wt.% of an acidic mucopolysaccharide, and (c) 0.01-5 wt.% of pyrrolidone carboxylic acid or its salt, in an (a)/(b) weight ratio of >=2/1 and a [(a)+(b)]/(c) weight ratio of >=1/4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic for skin, and more particularly, to a light-feeling feeling during use, no stickiness after use, a moisturizing effect, a sustained moisturizing effect, a skin roughness preventing effect and a skin roughness improving effect. The present invention relates to a lotion having excellent wrinkle removing effect and wrinkle preventing effect as well as excellent stability over time and restorability from low-temperature storage.

[0002]

2. Description of the Related Art Normally, the surface of human skin is covered with a sebum film, and the evaporation of water is appropriately suppressed. It is very important to keep the water content of the skin in an appropriate range from the viewpoint of skin health, and if the water content is insufficient, the skin tends to be rough. If you wash your face or take a bath, the sebum film will be temporarily removed and the skin will easily lose its moisture. Therefore, it is necessary to use a lotion to make up the moisture. In particular, in recent years, many people do not use emulsified cosmetics such as emulsions and creams due to problems such as stickiness of oil, and a lotion having higher moisture retention is desired. Moisturizing components conventionally used in lotions include polyhydric alcohols such as glycerin, 1,3-butylene glycol and sorbitol, and pyrrolidone carboxylate. However, although these moisturizing components are excellent in water holding power under high humidity, they have difficulty in holding water under low humidity, and have a drawback that the durability of the moisturizing effect cannot be maintained.

[0003] In recent years, various substances such as chitin, chitosan and derivatives thereof, protein hydrolysates, acidic mucopolysaccharides such as hyaluronic acid, and plant extracts have been studied as moisturizing components having a high water retention ability under low humidity. Have been. Among them, acidic mucopolysaccharides are also attracting particular attention because they are also natural moisturizing factors for skin and have a very high moisturizing effect. However, acidic mucopolysaccharides not only have unpleasant stickiness due to their high moisturizing power, but also do not have skin roughening improving effect, wrinkle removing effect and wrinkle preventing effect. JP-A-57-185 describes a skin cosmetic containing an acid mucopolysaccharide.
No. 208, JP-A-61-171405, JP-A-63-230614, JP-A-3-190808
And the cosmetics described in Japanese Patent Publication No. However, these cosmetics had unpleasant stickiness when used. Therefore, there is an external preparation for skin described in JP-A-6-122621 in which mucopolysaccharide and trehalose are combined to improve the stickiness.
There was no wrinkle removing effect and no wrinkle preventing effect.

[0004] On the other hand, the fruit juice of the fruits of Rosaceae such as apricots and apples contains various plant active elements such as vitamins, α-hydroxy acids, and minerals. Has a moisturizing effect,
It has been found that there is a wrinkle removing effect and a wrinkle preventing effect. In addition, high moisturizing action also in Astragalus extract,
It is known to have a whitening effect, a cell activating effect, and the like.
However, when these are blended into a lotion or the like, the coloration or “origin” is caused due to a change over time, and the stability is liable to deteriorate. Examples of cosmetics containing fruit juice of a Rosaceae plant include JP-A-55-19205 and JP-A-9-175982.
Japanese Patent Application Laid-Open No. 1-117814 discloses a cosmetic in which the cosmetic described in Japanese Patent Application Laid-Open No. H11-117814 is blended with the extract of Astragalus, but all of the cosmetics are stable over time when the dosage form is a transparent lotion. In addition to coloration and "origin" in stability and restorability from low-temperature storage, not only does stability deteriorate,
The effect of improving rough skin was weak.

[0005]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems, has a light feel at the time of use, has no stickiness even after use, is excellent in a moisturizing effect, a long-lasting moisturizing effect, and a skin roughness preventing and improving effect. An object of the present invention is to provide a lotion that is excellent in a wrinkle removing effect and a wrinkle preventing effect, and is excellent in stability over time and restorability from low-temperature storage.

[0006]

That is, the present invention provides: a.
Rosaceae fruit juice or Astragalus extract 0.005
~ 5% by weight, b. 0.001 to 3% by weight of acidic mucopolysaccharide, c. Pyrrolidone carboxylic acid or a salt thereof 0.01 to
5% by weight, the weight ratio of a / b is 2/1 or more, (a
A lotion characterized in that the weight ratio of + b) / c is 1/4 or more.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The fruits of the Rosaceae plant used in the present invention include, for example, apples, apricots, peaches, plums, pears, loquats, plums, strawberries, raspberries, snake strawberries, Dutch strawberries, ohebiti strawberries, tokri strawberries, striped strawberries, There are shrimp strawberry, strawberry, karin and the like, preferably apple, apricot, peach, pear and strawberry, more preferably apple and apricot. And
These fruits are squeezed to obtain a juice, or the juice is concentrated to obtain a juice. The Astragalus extract used in the present invention is obtained by extracting water, a water-soluble organic solvent, or a mixture thereof from the whole plant or seed of Astragalus.

The acidic mucopolysaccharides used in the present invention include, for example, hyaluronic acid, chondroitin-4-sulfate,
Acid mucopolysaccharides such as chondroitin-6-sulfate, dermatan sulfate, keratan sulfate and heparin, and salts formed with them and inorganic or organic alkalis, preferably hyaluronic acid, chondroitin-4-sulfate, chondroitin-6-sulfate And their salts, more preferably hyaluronic acid and its salts.

The pyrrolidonecarboxylic acid used in the present invention is a derivative of an amino acid also called pyroglutamic acid, and is obtained by heating and dehydrating L-glutamic acid at 175 ° C. Those that form salts are inorganic or organic alkalis, such as sodium hydroxide, potassium hydroxide, lithium hydroxide, magnesium hydroxide, calcium hydroxide, iron hydroxide, aluminum hydroxide, ammonia, and monoethanolamine. , Diethanolamine, monoisopropanolamine, lysine, arginine and the like.

A. The content of the fruit juice or the extract of Astragalus as a component is 0.005 to 5% by weight, preferably 0.01 to 4% by weight, more preferably 0.05 to 3% by weight in the total amount of the composition. . If the amount is less than 0.005% by weight, the effect of improving rough skin, the effect of removing wrinkles, and the effect of preventing wrinkles are weak. b. The acidic mucopolysaccharide as a component is contained in 0.0% of the total amount of the composition.
01 to 3% by weight, preferably 0.003 to 2.5% by weight.
%, More preferably 0.005 to 2% by weight.
If the content is less than 0.001% by weight, the moisturizing effect persists poorly.
If the content exceeds 10% by weight, not only stickiness is caused, but also viscosity increases and the like, and the compounding becomes difficult. c. The content of the pyrrolidone carboxylic acid or a salt thereof as a component is 0.01 to 5% by weight, preferably 0.05 to 4% by weight, more preferably 0.1 to 3% by weight in the total amount of the composition.
It is. If it is less than 0.01% by weight, the moist feeling during use is weakened, and if it exceeds 5% by weight, not only the stickiness is caused and the feel becomes heavy, but also the skin is easily absorbed by absorbing moisture from the skin surface, and the skin becomes easily rough.

The weight ratio of a / b is at least 2/1, preferably at least 5/1, more preferably at least 10/1. If it is less than 2/1, sufficient effects of improving rough skin, removing wrinkles, and preventing wrinkles cannot be obtained. The weight ratio of (a + b) / c is 1/4 or more, preferably 1/3 or more, more preferably 1/2 or more. If it is less than 1/4, not only will it have strong stickiness at the time of use and after use, but also the durability of the moisturizing effect will be poor, and the effect of preventing and improving skin roughness will be weak. The properties of the lotion of the present invention vary depending on the ingredients, but are preferably used as translucent properties that are transparent or slightly turbid due to oily components.

[0012] The skin 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, lower alcohols such as ethanol and isopropyl alcohol, polyhydric alcohols such as propylene glycol, dipropylene glycol, glycerin, diglycerin, 1,3-butylene glycol, and polyethylene glycol, higher alcohols, silicone derivatives, protein derivatives, squalane, and jojoba oil Oily bases such as olive oil, castor oil, lanolin, lecithin, octyldodecyl myristate, fatty acids, anionic surfactants such as soaps, acylmethyltaurine salts, amide ether sulfates, amide amino acid salts, amidopropyldimethyl Amphoteric surfactants such as betaine aminoacetate, and non-ionic surfactants such as polyoxyethylene alkyl ethers, polyethylene glycol fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and alkanolamides ON surfactants, cationic surfactants such as alkyltrimethylammonium chloride, semipolar surfactants such as alkyldimethylamine oxide, alginic acid, carboxyvinyl polymer, carboxymethylcellulose, hydroxypropylmethylcellulose, hydroxyethylcellulose, xanthan gum, etc. Water-soluble polymers, acids and alkalis as pH adjusters, bactericides, chelating agents, antioxidants, ultraviolet absorbers, natural extracts derived from animals and plants, pigments, fragrances, and the like can be added.

[0013]

Next, the present invention will be described in more detail by way of examples. Examples 1 to 7 and Comparative Examples 1 to 7 Skin cosmetics, which are lotions, were prepared according to the compositions shown in Tables 2 and 3, and evaluated by the following methods. However, the four components shown in Table 1 were used as common components as common components. The results are shown in Tables 2 and 3. (1) Feeling at the time of use Twenty women were panelists, and the feeling at the time of using the lotion after washing their face was determined as follows, and the average value of the 20 women was determined, and the average value was 1.5 points or more. Was evaluated as a lotion with a light touch when used. 2 points: When feeling that there is no stickiness at the time of use and the skin is well-adapted and the feel is light. 1 point: When using the product, the user feels that the product is slightly sticky or slightly uncomfortable during use and has a slightly heavy feel. 0 points: sticky or poorly familiar to skin when used,
If you feel heavy.

(2) Stickiness after Use Twenty women are panelists, use face lotion after washing their face, and 10 minutes later, the feeling of the skin is judged as follows, and the average value of the 20 persons is determined. And an average value of 1.5 or more was evaluated as a lotion having no stickiness after use. 2 points: When feeling that there is no stickiness at all. 1 point: If you feel that there is some stickiness. 0 point: When feeling very sticky.

(3) Moisturizing effect Twenty women were used as panelists, and after washing their face, using a lotion, the moisture of the skin after 10 minutes was judged as follows, and the average value of the 20 women was determined. A value of 1.5 or more was evaluated as a lotion having a good moisturizing effect. 2 points: When the skin feels very moist. 1 point: When the skin feels slightly moist. 0 point: When feeling that the moisture of the skin is not enough.

(4) Persistence of moisturizing effect Twenty women are panelists, use face lotion after washing their face, and determine the moisture of the skin one hour later as follows, and the average value of the twenty women is determined. An average value of 1.5 or more was evaluated as a lotion having good moisturizing effect. 2 points: When the skin feels very moist. 1 point: When the skin feels slightly moist. 0 point: When feeling that the moisture of the skin is not enough.

(5) Skin roughness prevention effect Twenty women judged to be susceptible to skin roughness with cosmetics were used as panelists, and the skin condition when using lotion twice a day for two consecutive weeks is shown below. Judge
The average value of 20 persons was determined, and an average value of 1.5 or more was evaluated as a lotion having an effect of preventing rough skin. 2 points: When feeling that the skin was not rough at all. 1 point: When the skin feels slightly rough. 0 point: when the skin is felt to be obviously rough.

(6) Skin roughening improvement effect Twenty women who had rough skin were used as panelists, and the skin condition when using lotion twice a day for two consecutive weeks was evaluated organoleptically as follows. Find the average of the names,
An average value of 1.5 or more was evaluated as a lotion having a skin roughness improving effect. 2 points: When the user feels that the rough skin has clearly recovered. 1 point: When the user feels that the rough skin has healed a little. 0 point: When feeling that the effect of improving skin roughness is not seen at all.

(7) Wrinkle Elimination Effect The skin condition when using 20 lotions of water twice a day for 2 consecutive weeks was judged functionally as follows and the average value of 20 women was used as a panelist. The average value of 1.5 or more was evaluated as a lotion having a wrinkle removing effect. 2 points: When wrinkles are felt to be clearly inconspicuous. 1 point: When wrinkles are felt to be slightly inconspicuous. 0 point: When it is felt that there is no wrinkle removing effect.

(8) Wrinkle Prevention Effect Sensory for skin condition of right half and left half of face when 20 women were used as panelists and lotion was applied to right half of face twice a day for two consecutive days. The average value of 20 persons was determined as follows, and an average value of 1.5 or more was evaluated as a lotion having a wrinkle preventing effect. 2 points: When the right half of the skin is clearly felt to have less wrinkles than the left half of the skin. 1 point: When it is felt that the right half of the skin is slightly less wrinkled than the left half of the skin. 0 point: when the right half and the left half have the same skin condition or the right half has more wrinkles.

(9) Stability over time The lotion was sealed in a transparent glass container and stored at 0 ° C., 25 ° C. and 40 ° C. for 3 months, and its appearance was observed and evaluated according to the following three grades. ：: Good stability (no change in appearance) Δ: Slightly poor stability (slightly, causing precipitation or slight coloring) ×: Poor stability (producing, causing precipitation or separation)
Or coloring is remarkable. )

(10) Restorability from low-temperature storage After lotion is sealed in a transparent glass container and solidified at -20 ° C, it is left at room temperature for 6 hours to restore it to a liquid state. After repeating this operation three times, the appearance was observed.
It was evaluated on a scale. ：: Good restorability (liquid, no change in appearance) △: Slightly poor restorability (slightly, with precipitate) ×: Poor restorability (good, with precipitate or separated)

[0023]

[Table 1]

[0024]

[Table 2]

[0025]

[Table 3]

According to Examples 1 to 7, the lotions using the components of the present invention have a light feel at the time of use, no stickiness at the time of use and after use, a moisturizing effect, a sustained moisturizing effect, and prevention of rough skin. It was excellent in effect, rough skin improvement effect, wrinkle removing effect, and wrinkle preventing effect, and also had good stability over time and restorability from low-temperature storage. On the other hand, in Comparative Examples 1 to 7, sufficient performance was not obtained. That is, in Comparative Example 1, a. Because the ingredients are not blended, skin roughening improvement effect,
The wrinkle removing effect and the wrinkle preventing effect are weak, and in Comparative Example 2, a. Since the components are blended beyond the range of the present invention, the stability over time and the resilience from low-temperature storage are deteriorated. In Comparative Example 3, b. Since no component was blended, the durability of the moisturizing effect was poor, and in Comparative Example 4, c. The moisturizing effect is not sufficient because no components are blended. In Comparative Example 5, c. Since the components are blended beyond the range of the present invention, the feel at the time of use deteriorates and the product has stickiness after use.
On the other hand, in Comparative Example 6, since the weight ratio of a / b was smaller than the range of the present invention, the skin roughness improving effect, the wrinkle removing effect, and the wrinkle preventing effect were weak. Furthermore, in Comparative Example 7, since the weight ratio of (a + b) / c is smaller than the range of the present invention, not only the feel at the time of use deteriorates, but also the sustainability of the moisturizing effect, the effect of preventing skin roughness, and the effect of improving skin roughness become weak. ing.

[0027]

EFFECT OF THE INVENTION The lotion of the present invention has a light feel when used,
There was no stickiness after use, and it was excellent in moisturizing effect, persistence of moisturizing effect, skin roughening prevention and improvement effect, excellent wrinkle removing effect and wrinkle preventing effect, and also excellent in aging stability and restorability from low-temperature storage.

Continued on the front page F term (reference) 4C083 AA111 AA112 AC072 AC102 AC122 AC152 AC302 AC442 AC482 AC611 AD042 AD311 AD332 AD342 CC04 DD01 DD27 EE01 EE06 EE07 EE12

Claims (1)

[Claims] 1. A method comprising: a. Rosaceae fruit juice or Astragalus extract 0.005-5% by weight, b. 0.001 to 3% by weight of acidic mucopolysaccharide, c. Cosmetic composition containing 0.01 to 5% by weight of pyrrolidone carboxylic acid or a salt thereof, wherein the weight ratio of a / b is 2/1 or more and the weight ratio of (a + b) / c is 1/4 or more. water.