JP2018158910A - Introductory cosmetics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide introductory cosmetics that have little stickiness and a high feeling of skin permeation, and can improve skin transparency after skin care with an improved skin care effect.SOLUTION: The introductory cosmetics contain (A) one or more selected from the group consisting of an alkylene oxide-added glycerol derivative represented by formula (I) and an alkylene oxide-added alkylglycoside derivative represented by formula (II) of 0.5-10 mass%, (B) a C3-6 bivalent alcohol of 3-30 mass%, and (C) Camellia extract of 0.001-0.5 mass%. In the following formulae, the meanings of symbols are as described in the specifications.SELECTED DRAWING: None

Description

  The present invention relates to an introductory cosmetic that can improve its effect when used before skin care.

Skin care cosmetics such as lotion, milky lotion, beauty serum, and cream are formulated with various moisturizers and oils (emollients) in addition to the main component water in order to effectively moisturize the skin. Skin care is performed for the purpose of supplying moisture to the skin and retaining the moisture, but it is difficult to retain moisture for a long time.
Conventionally, studies have been made to increase the water retention effect of moisturizers, such as amino acid derivatives (trimethylglycine, N-acylamino acid esters, etc.), protein hydrolysates (hydrolyzed collagen, hydrolyzed elastin, hydrolyzed silk, etc.) Various highly functional moisturizing ingredients such as acidic mucopolysaccharides (hyaluronic acid, chondroitin sulfate, etc.) have been proposed.
However, in the case of rough skin damaged by dryness or inflammation, the skin may not be in a state where it can sufficiently accept the moisturizing component.

Therefore, as means for sufficiently obtaining a moisturizing effect by skin care, Patent Document 1 (Japanese Patent Laid-Open No. 2009-91274) discloses a non-woven fabric for a decorative sheet used by impregnating lotion, and the decorative sheet It has been proposed that the nonwoven fabric for use includes cellulosic fibers and hydrophobic fibers, and the hydrophobic fibers are unevenly distributed on the surface portion of the nonwoven fabric for decorative sheets.
And the decorative sheet using the nonwoven fabric disclosed by patent document 1 is easy to hold | maintain a lotion, and is described that the transfer to the skin of a lotion is favorable.

  Further, Patent Document 2 (Japanese Patent Application Laid-Open No. 2004-137219) discloses cosmetics that are used before application of skin care cosmetics and effectively improve the effects of the skin care cosmetics including the moisturizing effect, so-called introduction cosmetics. Discloses a presskin care cosmetic containing polymethacryloyloxyethyl phosphorylcholine. Compared to the case where only the conventional skin care cosmetic is applied, by applying the presskin care cosmetic before the skin care cosmetic, the moisture retention effect of the skin obtained by the conventional skin care cosmetic is improved, and the skin care cosmetic It is described that the moisturizing effect can be further enhanced.

  However, it cannot be said that the development of technology for the basic skin care of rehydrating the skin and maintaining the moisturizing effect is sufficient, and the improvement of the moisturizing effect is due to the occurrence of stickiness and the sense of penetration into the skin. It may cause a decrease. In addition, consumers are also demanding the development of technology with a real sense of improving skin care effects.

JP 2009-91274 A JP 2004-137219 A

  Therefore, in view of the above circumstances, the present invention has an object to provide an introductory cosmetic that has no stickiness, has a high permeation to the skin, and can improve the transparency of skin after skin care and the effect of skin care. To do.

As a result of intensive studies to solve the above problems, the present inventors have identified specific alkylene oxide addition derivatives having skin moisturizing properties or emollients, dihydric alcohols having 3 to 6 carbon atoms, and camellia extracts. It has been found that a composition containing at a weight ratio of the above can achieve the above-mentioned purpose as an introductory cosmetic, and the present invention has been completed.
That is, the present invention relates to the following.

[1] (A) One or more selected from the group consisting of alkylene oxide addition derivatives of glycerin represented by formula (I) and alkylene oxide addition derivatives of alkyl glycosides represented by formula (II) 0.5 to 10% by mass,
(B) 3-30 mass% of C3-C6 dihydric alcohol, and (C) Camellia extract 0.001-0.5 mass%
Contains cosmetics to be introduced.

[In the formula (I), Gly represents a residue obtained by removing a hydroxyl group from glycerin, PO represents an oxypropylene group, EO represents an oxyethylene group, BO represents an oxybutylene group, a, b and c are PO, EO and BO, respectively. In which a + b is 1 to 30, c is 1 to 5, and the content ratio of PO and EO (PO / EO) is 1/5 to 5/1 in terms of mass ratio. ]

[In the formula (II), R represents an alkyl group having 1 to 4 carbon atoms, G represents a residue obtained by removing a hydroxyl group from glucose, EO represents an oxyethylene group, PO represents an oxypropylene group, BO represents an oxybutylene group, x , Y and z represent the average added moles of EO, PO and BO, respectively. x is 5 to 20, y is 1 to 10, z is 1 to 2, and the ratio of the content of EO to the total content of EO and PO (EO / (EO + PO)) is 55 to 90% by mass. . ]
[2] The introduced cosmetic according to [1], further comprising 0.01 to 1% by mass of (D) apricot juice.

  ADVANTAGE OF THE INVENTION According to this invention, the introductory cosmetics which have little stickiness at the time of use, and the high osmosis | permeation feeling to skin, and can improve the transparency of skin after skin care and the effect of skin care can be provided.

The introduced cosmetic of the present invention is (A) one selected from the group consisting of alkylene oxide addition derivatives of glycerin represented by formula (I) and alkylene oxide addition derivatives of alkyl glycosides represented by formula (II) Or 2 or more types, (B) C3-C6 dihydric alcohol and (C) Camellia extract are contained. Hereinafter, these will be sequentially described.
The “introduced cosmetic” in the present invention is a cosmetic used in the previous stage of skin care and refers to a cosmetic having a role of enhancing the effects of skin care cosmetics such as skin moisturizing and protective effects.

(A): Alkylene oxide addition derivative In the introduced cosmetic of the present invention, the alkylene oxide addition derivative contained as the component (A) is an alkylene oxide addition derivative of glycerin represented by the formula (I) and the formula (II): Are selected from the group consisting of alkylene oxide addition derivatives of alkyl glycosides.

[In the formula (I), Gly represents a residue obtained by removing a hydroxyl group from glycerin, PO represents an oxypropylene group, EO represents an oxyethylene group, BO represents an oxybutylene group, a, b and c are PO, EO and BO, respectively. In which a + b is 1 to 30, c is 1 to 5, and the content ratio of PO and EO (PO / EO) is 1/5 to 5/1 in terms of mass ratio. ]

[In the formula (II), R represents an alkyl group having 1 to 4 carbon atoms, G represents a residue obtained by removing a hydroxyl group from glucose, EO represents an oxyethylene group, PO represents an oxypropylene group, BO represents an oxybutylene group, x , Y and z represent the average added moles of EO, PO and BO, respectively. x is 5 to 20, y is 1 to 10, z is 1 to 2, and the ratio of the content of EO to the total content of EO and PO (EO / (EO + PO)) is 55 to 90% by mass. . ]

In formula (I), the oxypropylene group represented by PO and the oxybutylene group represented by BO may be either linear or branched, but propylene oxide (1,2-epoxypropane) and 1,2 An oxypropylene group and an oxybutylene group obtained respectively by butylene oxide are preferred.
In formula (I), for the oxypropylene group represented by PO and the oxyethylene group represented by EO, the total (a + b) of each average added mole number per hydroxyl group of glycerin is 1 to 30, preferably 2 20, more preferably 3-10. About the oxybutylene group shown by BO, the average addition mole number c per hydroxyl group of glycerol is 1-5, Preferably it is 1-3, More preferably, it is 1-2.
In the alkylene oxide addition derivative of glycerol represented by the formula (I), the content ratio (PO / EO) of the oxypropylene group represented by PO and the oxyethylene group represented by EO is 1/5 to 5 / 1, preferably 1/2 to 4/1, and more preferably 1/2 to 3/1.
In addition, the oxypropylene group and the oxyethylene group may be added to the hydroxyl group of glycerin in either a random form or a block form. However, in order to obtain a high penetrating feeling, it may be added randomly. preferable. The oxybutylene group is added in block form to the end of the alkylene oxide chain.

  The alkylene oxide addition derivative of glycerin represented by the formula (I) can be appropriately synthesized and used by an alkylene oxide addition reaction known per se, but “WILBride (registered trademark) S provided by NOF Corporation”. -753 "(in formula (I), a + b = 4.3, c = 1, and the mass ratio of PO and EO (PO / EO) = 4/5) You can also.

  In formula (II), examples of the alkyl group having 1 to 4 carbon atoms represented by R include methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, isobutyl, tert-butyl, and methyl, ethyl and the like are preferable. And methyl is more preferred.

In formula (II), the oxypropylene group represented by PO and the oxybutylene group represented by BO may be either linear or branched, but propylene oxide (1,2-epoxypropane) and An oxypropylene group and an oxybutylene group respectively obtained from 1,2-butylene oxide are preferred.
Moreover, in formula (II), the average addition mole number of the oxyethylene group (EO) shown by x is 5-20, Preferably it is 6-15, More preferably, it is 6-10. The average added mole number of the oxypropylene group (PO) represented by y is 1 to 10, preferably 2 to 8, and more preferably 2 to 5. The average addition mole number of the oxybutylene group represented by z is 1 to 2, preferably 1.
In the alkylene oxide addition derivative of the alkyl glycoside represented by the formula (II), the ratio of the content of the oxyethylene group represented by EO to the total content of the oxyethylene group represented by EO and the oxypropylene group represented by PO (EO / (EO + PO)) is 55 to 90% by mass, preferably 60 to 80% by mass, and more preferably 65 to 75% by mass.
Moreover, the oxyethylene group and the oxyprepylene group may be added to the hydroxyl group of the alkylglycoside in either a block form or a random form, but are preferably added in a random form. The oxybutylene group is added in the form of a block to the end of the alkylene oxide chain.

  In the alkylene oxide addition derivative of the alkyl glycoside represented by the formula (II), the alkylene oxide group is added to all of the free hydroxyl groups of the alkyl glycoside.

  The alkylene oxide addition derivative of the alkyl glycoside represented by the formula (II) can be appropriately synthesized and used by a known alkylene oxide addition reaction.

  In the present invention, as the component (A), one or more kinds can be selected and used from the group consisting of the above-mentioned alkylene oxide addition derivatives of glycerin and alkylene oxide addition derivatives of alkyl glycosides.

Content of (A) component in the introductory cosmetics of this invention is 0.5-10 mass%, Preferably it is 1-8 mass%, More preferably, it is 1.5-5 mass%.
When the content of the component (A) is less than 0.5% by mass, the permeation to the skin is lowered, and there is a possibility that a transparency after skin care and a sufficient improvement in the effect of skin care cannot be obtained. In addition, when the content of the component (A) is more than 10% by mass, stickiness may be caused, and the permeation feeling to the skin may be reduced, and after skin care, sufficient improvement in skin care effect cannot be obtained. There is.

(B): C3-C6 dihydric alcohol The C3-C6 dihydric alcohol contained as the component (B) in the cosmetic composition of the present invention is a chain aliphatic having 3-6 carbon atoms. It is a compound having a structure in which hydroxyl groups are substituted one by one in two carbon atoms of hydrocarbon. The chain aliphatic hydrocarbon substituted by two hydroxyl groups may be either linear or branched and may be either saturated or unsaturated, but is preferably a saturated hydrocarbon.
Specifically, 1,2-propanediol (propylene glycol), 1,3-propanediol, 1,2-butanediol, 1,3-butanediol (butylene glycol), 1,4-butanediol, 1, 2-pentanediol (pentylene glycol), 1,5-pentanediol, 1,2-hexanediol, 1,6-hexanediol, 2-methylpentane-2,4-diol (hexylene glycol), dipropylene glycol Among them, 1,2-propanediol (propylene glycol), 1,3-propanediol, 1,3-butanediol (butylene glycol), 1,2-pentanediol (pentylene glycol), di Propylene glycol and 1,2-hexanediol are preferred, and 1,3-propylene Diol, 1,3-butanediol (butylene glycol), and 1,2-pentanediol (pentylene glycol) is particularly preferred.
With a dihydric alcohol having less than 3 carbon atoms, it is difficult to obtain a sufficient skin transparency improvement effect after skin care. On the other hand, a dihydric alcohol having more than 6 carbon atoms is not preferable in that the permeation to the skin is lowered and the cost is increased.
Said C3-C6 dihydric alcohol can be contained in the introduction cosmetics of this invention as (B) component individually by 1 type or in combination of 2 or more types.

Content of (B) component in the introductory cosmetics of this invention is 3-30 mass%, Preferably it is 5-25 mass%, More preferably, it is 8-20 mass%.
When the content of the component (B) is less than 3% by mass, the permeation feeling to the skin is lowered, and there is a possibility that a feeling of transparency after skin care and a sufficiently improved feeling of skin care effect cannot be obtained. Moreover, when there is more content of (B) component than 30 mass%, stickiness may arise and the permeation | transmission feeling to skin may fall, and the sufficient improvement feeling of the effect of skin care may not be obtained after skin care. .

(C) Camellia extract Camellia japonica belonging to the genus Camellia, Camellia japonica, its varieties and related species of plants are included in the cosmetic composition of the present invention as component (C). It is an extracted extract.
Camellia reticulata etc. are mentioned as a related species of Camellia, and Camellia ruticana Honda. ) Nagam.) And the like.
For the purposes of the present invention, an extract of Camellia japonica is preferred.

For extraction, fruits such as camellia, leaves, flowers, seeds, bark, and other parts can be used, and among these, seeds and leaves are preferably used.
Extraction can be performed according to a conventional method. For example, plant bodies such as camellia seeds and leaves and the like can be chopped, dried, pulverized, etc., immersed in an extraction solvent and left standing or stirred. The plant may be sonicated, homogenated, or the like in an extraction solvent.
Examples of extraction solvents include hydrocarbons such as hexane and benzene, esters such as ethyl acetate, ketones such as acetone, ethers such as diethyl ether and tetrahydrofuran, halogenated hydrocarbons such as chloroform and methylene chloride, and lower alcohols. Examples thereof include alcohols such as polyhydric alcohols and water, and one kind can be used alone, or two or more kinds can be used in combination.
For the purpose of the present invention, polar solvents such as water; lower alcohols such as methanol, ethanol, propanol and isopropanol; polyhydric alcohols such as 1,2-propanediol, 1,3-butanediol and glycerin are preferably used.
The amount of the extraction solvent used is usually about 5 to 100 times the weight of a plant such as camellia. Moreover, extraction temperature is suitably determined according to the kind of extraction solvent to be used. For example, when the extraction solvent is water, the extraction temperature is usually about 20 ° C. to 120 ° C., and when the extraction solvent is a lower alcohol, it is usually about 20 ° C. to 50 ° C., preferably room temperature. After the extraction treatment, the extract can be obtained by solid-liquid separation by means such as filtration and centrifugation.

An extract such as camellia may be used as it is, or may be used after concentration by distilling off the extraction solvent according to a conventional method, followed by purification, drying or the like as necessary. Moreover, you may use the dried extract melt | dissolved with 1 type, or 2 or more types of solvents, such as water, ethanol, 1, 3- butanediol.
In the present invention, an extract may be obtained from the seeds, leaves and the like of camellia by the above-described method. For example, "camellia seed extract BG" (manufactured by NOF Corporation), "camellia leaf extract BG" Commercial products such as (manufactured by NOF Corporation) can also be used.

The content of the component (C) in the introduced cosmetic of the present invention is 0.001 to 0.5% by mass, preferably 0.005 to 0.3% by mass, based on the amount of dry residual material of the camellia extract. More preferably, it is 0.01-0.1 mass%.
Here, the “dry residual substance amount” refers to the mass of the residue when each extract is dried.
When the content of the component (C) is less than 0.001% by mass, the permeation feeling to the skin is lowered, and there is a possibility that a feeling of transparency after skin care and a sufficient improvement feeling of the effect of skin care cannot be obtained. Moreover, when there is more content of (C) component than 0.5 mass%, the effect corresponding to a compounding quantity will not be seen but it is not economical.

  The introduced cosmetic of the present invention preferably contains the following component (D) in addition to the components (A) to (C). As a result, the effect of the present invention becomes more remarkable.

(D) Apricot juice The apricot juice contained as component (D) in the cosmetic composition of the present invention is a cultivar of Prunus armenica L., apricot cultivar of Prunus armenica L. var. Ansu Maxim.), Manchuanzu (Prunus manshurica Koehne) and Maucoans (Prunus sibirica L.), and other fruit juices obtained from honanzu and apricot fruits are particularly preferred.
In the present invention, fruit juice obtained by squeezing fruits such as honan and apricot may be used as it is, or a fruit juice obtained by further concentrating or reducing it may be used, and the fruit juice or concentrated fruit juice may be used. A processed product obtained by subjecting the concentrated reduced fruit juice to a treatment such as filtration, centrifugation, dilution with various solvents, fractionation with a column or the like can also be used. That is, the “fruit juice” in the present invention refers to fruit juice itself obtained by squeezing fruits such as honzu and apricot, concentrated fruit juice or concentrated reduced fruit juice, or a processed product thereof. Means for obtaining fruit juice from fruit and fruit juice The treatment for does not include extraction with water or organic solvents.
In the present invention, fruit juice obtained by pressing apricot fruit or fruit juice obtained by further concentration or various treatments can be used as apricot juice. For example, “apricot juice PH” (day It is also possible to use commercially available products such as those manufactured by Oil Co., Ltd.

When the component (D) is contained in the introduced cosmetic of the present invention, the content thereof is preferably 0.001 to 1% by mass in terms of dry residual substance relative to the total amount of the cosmetic, 0.005 It is more preferable to set it to -0.8 mass%, and it is further more preferable to set it as 0.1-0.5 mass%.
When the content of the component (D) is within the above range, it is more preferable in terms of penetration into the skin, transparency after skin care, and improvement in skin care effect.

  The introduced cosmetic of the present invention includes, in addition to the above components (A) to (D), solvents such as water and lower alcohols (ethanol, isopropanol, etc.); other than the component (B), as long as the characteristics of the present invention are not impaired. Moisturizers such as polyhydric alcohols (such as glycerin), sugar alcohols (such as sorbitol), amino acids (such as sodium pyrrolidonecarboxylate and alanine), acidic mucopolysaccharides (such as hyaluronic acid and chondroitin sulfate); surfactants (polyoxy) Ethylene sorbitan monostearate, etc.); thickening polysaccharides (carrageenan, xanthan gum, locust bean gum, etc.), water-soluble polymers (polyacrylic acid, carboxyvinyl polymer, etc.) thickening / gelling agents; pH adjusters ( Acetic acid, sodium acetate, citric acid, sodium citrate, sodium chloride, etc.); chelating agent (sodium edetate) Helium, etc.); antioxidants (such as ascorbic acid); preservatives (methyl parahydroxybenzoate, etc.); pigments; dyes; such perfumes, common additives may be incorporated.

  The introduced cosmetic of the present invention can be preferably provided in the form of lotion, milky lotion, beauty essence, mist-like lotion, cream, gel, etc., and a general production method well known in the art, for example, The 17th revised Japanese Pharmacopoeia Formulation General Rules [3] It can be manufactured according to the methods described in “External Liquid Agent”, “Cream Agent”, “Gel Agent”, “Spray Agent”, etc. in each section of the formulation.

The introduced cosmetic of the present invention has less stickiness during use, has a high permeation to the skin when applied, and has the effect of improving the skin transparency and the skin care effect after using the skin care cosmetic. Excellent.
In addition, the introductory cosmetic of the present invention can be used not only before skin care but also during skin care.

Examples of the skin care cosmetic used after using the introduced cosmetic of the present invention include skin lotion, milky lotion, cosmetic liquid, cream and the like used for skin care such as moisturizing and protecting the skin.
The introduced cosmetic of the present invention can improve the effect particularly suitably for aqueous cosmetics such as skin lotions containing useful components such as plant extracts having cell activation and anti-inflammatory effects. it can.

  Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples.

[Examples 1-8 and Comparative Examples 1-7]
According to the formulations shown in Tables 1 and 2, the introduced cosmetics (skin lotions) of Examples 1 to 8 and Comparative Examples 1 to 7 of the present invention were prepared.
<Manufacturing method>
(A) to (D) components in Table 1 or (A) to (D) components and (C ′) components in Table 2 were sequentially added to purified water, mixed, and uniformly dissolved. The introduced cosmetic was obtained by filtration.
In Tables 1 and 2, the content of each component is shown in mass%. Moreover, as each component shown in Tables 1 and 2, the following raw materials were used.
(* 1) Alkylene oxide addition derivative of glycerin; “WILBride S-753” (manufactured by NOF Corporation) (display name: PEG / PPG / polybutylene glycol-8 / 5/3 glycerin)
(* 2) Alkylene oxide addition derivative of methyl glucoside; in formula (II), R is methyl, G is a residue obtained by removing hydroxyl group from glucose, x is 7.25, y is 2.25, z is 1 , An alkylene oxide addition derivative in which the content ratio of EO to the total content of EO and PO is 71% by mass (* 3) 1,3-propanediol; “Zemea select propanediol” (Du Pont Tate and Lyle Bioproducts ( DuPont Tate & Lyle Bio Products) (Display name: Propanediol)
(* 4) “Dipropylene glycol DPG-FC” (Asahi Glass Co., Ltd.) (Display name: DPG)
(* 5) Camellia seed extract; “Camellia seed extract BG” (manufactured by NOF Corporation) (Display name: Camellia seed extract (0.8 mass%), BG (50 mass%), water (49.2 mass) %) ("BG" in the display name means 1,3-butanediol (butylene glycol))
(* 6) Camellia leaf extract; “camellia leaf extract BG” (manufactured by NOF Corporation) (Display name: Camellia leaf extract (1 mass%), BG (49.5 mass%), water (49.5 mass) %))
(* 7) Apricot juice; “Apricot juice PH” (manufactured by NOF Corporation) (Display name: apricot juice (85 mass%), glycerin (15 mass%))
(* 8) Tea leaf extract; “Green tea extract BG” (manufactured by Maruzen Pharmaceutical Co., Ltd.) (Display name: tea leaf extract, BG, water)
(* 9) Milky-scented Flower Extract; “Toe-Senka Extract BG-J” (manufactured by Maruzen Pharmaceutical Co., Ltd.) (Display name: Milky-scented Flower Extract, BG, Water)

  About each introduction cosmetics of Examples 1-8 and Comparative Examples 1-7 prepared above, (1) Stickiness, (2) Penetration feeling into skin, (3) Transparency of skin after completion of skin care, and ( 4) The following method evaluated the improvement feeling of the skin care effect after skin care implementation.

(1) Stickiness Twenty women (23-55 years old) are panelists, and after washing their face, 0.5 g of each of the introduced cosmetics of the examples and comparative examples is applied to the entire face. Skin care was carried out with a lotion prepared according to the formulation shown in 1. At that time, the stickiness felt for the introduced cosmetic was evaluated according to the following evaluation criteria.
<Evaluation criteria>
2 points: When feeling that there is little stickiness.
1 point: If you feel a little sticky.
0 points: When stickiness is clearly felt.
The total score of 20 evaluation points was calculated and determined according to the following criteria.
<Criteria>
A: Total score of 35 points or more; Introduced cosmetics that are not very sticky.
○: The total score is 30 points or more and less than 35 points;
Δ: Total score of 20 points or more and less than 30 points;
X: The total score is less than 20; it is an introduction cosmetic that feels sticky.

(2) Penetration to the skin 20 women (23-55 years old) are panelists, and after the face wash, 0.5 g of each of the introduced cosmetics of the examples and comparative examples is applied to the entire face. Then, skin care with a lotion prepared according to the formulation shown in Table 3 was carried out. At that time, the penetration of the introduced cosmetic into the skin was evaluated according to the following evaluation criteria.
<Evaluation criteria>
2 points: When the feeling of penetration is high.
1 point: When a slight permeation is felt.
0 point: When the penetrating sensation was not felt.
The total score of 20 evaluation points was calculated and determined according to the following criteria.
<Criteria>
A: The total score is 35 points or more; it is an introductory cosmetic with a very high penetration feeling.
◯: Total score of 30 points or more and less than 35 points;
(Triangle | delta): A total score is 20 points or more and less than 30 points;
X: The total score is less than 20;

(3) Transparency of skin 20 women (23-55 years old) were used as panelists, and after the face washing, 0.5 g of each of the introduced cosmetics of the examples and comparative examples were applied to the entire face. Skin care with a lotion prepared according to the formulation shown in Table 3 was carried out. The skin transparency after completion of skin care was evaluated according to the following evaluation criteria.
<Evaluation criteria>
2 points: When it is felt that the transparency of the skin is improved by using the introduced cosmetic.
1 point: When it is felt that the transparency of the skin is slightly improved by using the introduced cosmetic.
0 points: When the introduced cosmetic material was used, it did not feel that the transparency of the skin was improved.
The total score of 20 evaluation points was calculated and determined according to the following criteria.
<Criteria>
A: Total score of 35 points or more; It is an introductory cosmetic material that can be highly improved in transparency.
○: Total score of 30 points or more and less than 35 points;
Δ: Total score is 20 points or more and less than 30 points;
X: The total number is less than 20 points;

(4) Improvement feeling of skin care effect 20 women (23 to 55 years old) are panelists, and after the face washing, 0.5 g of each of the cosmetics introduced in Examples and Comparative Examples is applied to the entire face. Then, skin care with a lotion prepared according to the formulation shown in Table 3 was carried out. Application of the introduced cosmetic and skin care were carried out for 7 consecutive days, and the improvement in skin care effect after the completion of the 7 days of implementation was evaluated according to the following evaluation criteria.
<Evaluation criteria>
2 points: When it is felt that the skin care effect has been improved by using the introduced cosmetic.
1 point: When the skin care effect is slightly improved by using the introduced cosmetic.
0 point: When the skin care effect was not improved by using the introduced cosmetic.
The total score of 20 evaluation points was calculated and determined according to the following criteria.
<Criteria>
A: Total score of 35 points or more; Introduced cosmetics with a very high improvement in skin care effect.
A: The total score is 30 points or more and less than 35 points; it is an introductory cosmetic with a high improvement in skin care effect.
(Triangle | delta): A total score is 20 points or more and less than 30 points; It is the introduction cosmetics by which the feeling of improvement of a skin care effect is not felt so much.
X: Total score is less than 20; it is an introductory cosmetic that does not feel improved skin care effect.

  About each evaluation of said (1)-(4), the evaluation result was combined with Table 1, 2, and was shown. Tables 1 and 2 show the determination results for each evaluation item and the total score of the panelists' evaluation points.

[Evaluation results]
As shown in Table 1, all of the cosmetics introduced in Examples 1 to 8 of the present invention have less stickiness, high penetration into the skin, improved skin transparency after completion of skin care, and skin care. It was evaluated that the improvement feeling of the skin care effect after continuously performing was successfully obtained.
In particular, in addition to the components (A) to (C), the introduced cosmetic of Example 7 further containing the component (D) was evaluated very well for any of the evaluation items.

On the other hand, as shown in Table 2, the cosmetic composition of Comparative Example 1 that does not contain the component (A) has insufficient skin permeation, and provides continuous skin care and skin care after the end of skin care. It was evaluated that the feeling of improvement in skin care effect after being implemented was not felt.
(B) The cosmetic composition introduced in Comparative Example 2 that does not contain the component has insufficient skin penetration, and the skin transparency after the end of skin care and the improvement in skin care effect after continuous skin care. Was evaluated as not much felt.
(C) In place of the component, each of the introduced cosmetics of Comparative Example 3 and Comparative Example 7 containing the component (C ′), which is an extract of plants other than camellia, has a slight stickiness and has a feeling of penetrating into the skin. It was evaluated that it was insufficient, and the skin transparency after completion of skin care and the improvement in skin care effect after continuous skin care were not felt.
(A) The cosmetic composition introduced in Comparative Example 4 in which the content of the component exceeds 10% by mass is somewhat sticky, has insufficient permeation to the skin, and improves the skin care effect after continuous skin care. It was evaluated that the feeling was not felt so much.
(B) The cosmetic composition of Comparative Example 5 containing 50% by mass of the component is sticky, has a low permeation to the skin, and does not feel much improvement in skin care effect after continuous skin care. It was evaluated.
The cosmetic composition of Comparative Example 6 in which the content of the component (B) is less than 3% by mass feels that the skin is transparent after completion of skin care and the improvement in skin care effect after continuous skin care is performed. It was evaluated that it was not possible.

  As described above in detail, the present invention provides an introductory cosmetic that has less stickiness during use, has a high permeation to the skin, and can improve the transparency of skin after skin care and the effect of skin care. can do.

Claims (2)

(A) One or more selected from the group consisting of an alkylene oxide addition derivative of glycerin represented by the formula (I) and an alkylene oxide addition derivative of an alkyl glycoside represented by the formula (II): 5-10% by mass,
(B) 3-30 mass% of C3-C6 dihydric alcohol, and (C) Camellia extract 0.001-0.5 mass%
Contains cosmetics to be introduced.
[In the formula (I), Gly represents a residue obtained by removing a hydroxyl group from glycerin, PO represents an oxypropylene group, EO represents an oxyethylene group, BO represents an oxybutylene group, a, b and c are PO, EO and BO, respectively. In which a + b is 1 to 30, c is 1 to 5, and the content ratio of PO and EO (PO / EO) is 1/5 to 5/1 in terms of mass ratio. ]
[In the formula (II), R represents an alkyl group having 1 to 4 carbon atoms, G represents a residue obtained by removing a hydroxyl group from glucose, EO represents an oxyethylene group, PO represents an oxypropylene group, BO represents an oxybutylene group, x , Y and z represent the average added moles of EO, PO and BO, respectively. x is 5 to 20, y is 1 to 10, z is 1 to 2, and the ratio of the content of EO to the total content of EO and PO (EO / (EO + PO)) is 55 to 90% by mass. . ]   Furthermore, the introductory cosmetics of Claim 1 which contain 0.01-1 mass% of (D) apricot juice.