JP5686938B2 - Oily skin cleanser - Google Patents

Description

  The present invention has a monohydric lower alcohol and hydrocarbon oil having 2 to 3 carbon atoms, an oil agent compatible with the monohydric lower alcohol having 2 to 3 carbon atoms, a polyoxyethylene chain, and an HLB of 5 The present invention relates to an oily skin cleanser containing a nonionic surfactant in the range of ˜16, and more specifically, familiarity with dirt with monohydric lower alcohol having 2 to 3 carbon atoms, and stickiness after washing The present invention relates to an oily skin cleanser which is excellent in feeling and is stable over time.

  In recent years, cosmetics having excellent makeup effect sustainability such as oily mascara, lipsticks that are difficult to remove, and sunscreens that are excellent in water resistance have been developed, such as excellent makeup lasting or resistance to makeup. On the other hand, development of a skin cleanser having a high cleaning effect for removing a cosmetic having excellent makeup effect durability after use is desired. Such skin cleansers include oily skin cleansers and aqueous skin cleansers, depending on the base component.

  In oily skin cleansers, in order to further improve the cleaning effect, for example, studies on combining various HLB surfactants, studies on improving the cleaning effect using the liquid crystal state, etc. have been carried out (for example, (See Patent Documents 1 and 2).

On the other hand, in the case of an aqueous skin cleansing agent, in order to increase the cleaning effect, studies have been made on blending alcohol and blending several or more surfactants (see, for example, Patent Documents 3 and 4).
JP 2004-168724 A Japanese Patent Publication No. 1-53845 JP 2002-226891 A JP 2004-182760 A

  Patent Document 1 improves the washability and stability by combining three types of surfactants having different HLB. Patent Document 2 discloses a hydrophilic nonionic surfactant and a water-soluble substance having a hydroxyl group in the molecule. In addition, usability and detergency are improved by utilizing a liquid crystal structure with an oil component and water. However, these oily skin cleansing agents may feel stickiness peculiar to the oil agent. In Patent Document 3, usability is improved by combining anionic and amphoteric surfactants, and in Patent Document 4, detergency is improved by combining amphoteric and anionic surfactants. However, with these aqueous skin cleansing agents, there are cases where the cosmetics having excellent makeup sustainability cannot be satisfactorily cleaned.

  In other words, a specific third component that enables the alcohol component used in the aqueous skin cleanser and the hydrocarbon oil used in the oily skin cleanser to be blended at the same time is examined and blended uniformly. The object is to obtain a one-stage oily skin cleanser.

  Under such circumstances, the present inventors have conducted extensive studies to solve the above problems, and as a result, the monohydric lower alcohol and hydrocarbon oil having 2 to 3 carbon atoms and the monovalent lower alcohol having 2 to 3 carbon atoms. By blending an oil that is compatible with the oil, a monohydric lower alcohol having 2 to 3 carbon atoms is stably blended in the oil base, and has a polyoxyethylene chain, and the HLB is 5 to 16. A nonionic surfactant in the range is blended, and it is found that an oily skin cleanser that is excellent in familiarity with dirt that is essential for obtaining high detergency and has no stickiness after washing can be obtained. The present invention has been completed.

That is, the present invention provides the following components (a) to (d);
(A) C3-C3 monovalent lower alcohol 3-30 mass%
(B) 20 to 80% by mass of hydrocarbon oil which is liquid at 25 ° C.
(C) Oil agent compatible with component (a) (d) An oily skin cleanser comprising a polyoxyethylene chain and a nonionic surfactant having an HLB in the range of 5 to 16 Is to provide.

  Moreover, the blending mass ratio (a) / (c) of the component (a) and the component (c) is in the range of 0.2 to 4. The oily skin cleanser is provided.

  Further, the component (c) is diglyceryl diisostearate, glyceryl tri-2-ethylhexanoate, cetyl 2-ethylhexanoate, diisostearyl malate, isononyl isononanoate, isotridecyl isononanoate, octyl palmitate, di-2-ethyl One kind selected from neopentyl glycol hexanoate, neopentyl glycol dicaprate, pentaerythritol tetra-2-ethylhexanoate, decamethylcyclopentasiloxane, dimethylpolysiloxane, octyldodecanol, jojoba alcohol, isostearyl alcohol, isostearic acid The oily skin cleanser is characterized by being two or more.

  Further, the oily skin cleanser is characterized in that the component (d) is one or two selected from polyoxyethylene sorbitol tetraoleate and polyoxyethylene glyceryl triisostearate.

  In the present invention, the oily base is blended with a monohydric lower alcohol and a hydrocarbon having 2 to 3 carbon atoms and an oil agent compatible with the monovalent lower alcohol having 2 to 3 carbon atoms. ~ 3 monovalent lower alcohol can be blended stably, and by blending a nonionic surfactant with polyoxyethylene chain and HLB in the range of 5-16, familiarity with dirt and washing It is possible to obtain a high quality oily skin cleanser that does not have a sticky feeling later.

Hereinafter, the present invention will be described in detail.
The monovalent lower alcohol having 2 to 3 carbon atoms of the component (a) is excellent in the solvent effect due to high polarity, and dissolves many substances blended in the cosmetic, so that the cosmetic effect has a long lasting effect. It has a high effect on cleaning and removal. Specific examples include ethanol, propanol, and 2-propanol.

  The amount of component (a) is 3 to 30% by mass (hereinafter abbreviated as%), and is more preferably 5 to 25% from the viewpoint of familiarity with dirt and lack of stickiness after washing. If it is less than 3%, it is unfavorable because it is difficult to blend with dirt and a sticky feeling after washing remains, and if it exceeds 30%, it becomes difficult to mix stably.

  The hydrocarbon oil which is liquid at 25 ° C. as the component (b) is blended for the purpose of dissolving oily dirt. The hydrocarbon oil that is liquid at 25 ° C. may have a linear, branched or cyclic carbon chain, or may have a saturated or unsaturated bond. Squalane, squalene, liquid paraffin, heavy liquid paraffin In addition, light liquid paraffin, isoparaffin and the like can be mentioned, but liquid paraffin is preferable in order to improve the familiarity with dirt. Examples of commercially available products that can be used include High Coal K-230 and High Coal K-160 (manufactured by Kaneda Corporation).

  The blending amount of component (b) is 20 to 80%, more preferably 30 to 50%, from the viewpoint of improving the familiarity with dirt and reducing the stickiness after washing. If it is less than 20%, there is a tendency that the familiarity with dirt tends to deteriorate, and if it exceeds 80%, a sticky feeling after washing tends to be increased, which is not preferable.

  In the present invention, the component (c) is an oil agent that is compatible with the component (a), and is an oil agent that is different from the component (b). By blending the component (c), the component (a) can be stably blended with the oily skin cleanser. Here, the term “compatible” means that the components (a) and (c) are mixed and stirred at 25 ° C. by the same amount, and after one minute in a stationary state, the layer is further in a visual observation. Such an oil agent of component (c) is not particularly limited as long as it is used in ordinary cosmetics, but is preferably a liquid or paste at 25 ° C. Specifically, diglyceryl diisostearate, glyceryl tri-2-ethylhexanoate, cetyl 2-ethylhexanoate, diisostearyl malate, isononyl isononanoate, isotridecyl isononanoate, octyl palmitate, neo-di-2-ethylhexanoate Pentyl glycol, neopentyl glycol dicaprate, tetra-2-ethylhexanoic acid pentaerythritol, decamethylcyclopentasiloxane, dimethylpolysiloxane, octyldodecanol, jojoba alcohol, isostearyl alcohol, isostearic acid, etc. It is excellent in compatibility and can be exemplified as one that is stably blended in an oily skin cleanser. Among these, glyceryl tri-2-ethylhexanoate, diisostearyl malate, isononyl isononanoate, neopentyl glycol di-2-ethylhexanoate, octyldodecanol, jojoba alcohol, isostearyl alcohol, isostearic acid and component (a) It is also preferable from the viewpoints of compatibility with dirt and stability over time, and also from the viewpoint of familiarity with dirt and the feeling of stickiness after washing. Moreover, a component (c) can mix | blend 1 type, or 2 or more types from the above.

  In addition, the oily skin cleanser of the present invention can be obtained by mixing the component (a) with the component (c) at a specific ratio to obtain a one-stage oily skin cleanser with excellent stability over time. It is excellent in the familiarity and feeling of stickiness after washing. Component (a) and component (c) blending mass ratio (a) from the viewpoint of stably blending component (a) in an oily skin cleanser, improving the familiarity with dirt, and reducing the stickiness after washing. / (C) is preferably 0.2 to 4, and more preferably 0.5 to 2 because it is more effective.

  Component (d) used in the present invention is a nonionic surfactant having a polyoxyethylene chain-having HLB in the range of 5 to 16. In the present invention, the detergency is improved and washing with water is more effective. It improves the quality of the product, improves the familiarity with dirt, and reduces the stickiness after washing. The nonionic surfactant of component (d) is not particularly limited as long as it can be used in ordinary cosmetics, but is preferably a liquid or paste at 25 ° C. Specifically, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbit fatty acid ester, polyoxyethylene polyoxy A propylene alkyl ether, a polyglycerin fatty acid ester, a polyethylene glycol fatty acid ester, etc. can be mentioned, These can be used 1 type or 2 or more types. In addition, in the oily skin cleanser of the present invention, when polyoxyethylene sorbitol tetraoleate or polyoxyethylene glyceryl triisostearate is selected from these, the familiarity of the soil is good and there is no stickiness after washing. A more excellent oily skin cleanser can be obtained.

  The nonionic surfactant of component (d) needs to have an HLB in the range of 5 to 16. If the HLB is less than 5, a sticky feeling after washing remains. This is not preferable because the familiarity of the product becomes worse.

  The oily skin cleanser of the present invention is not limited to the components described above, but other components used in normal cosmetics, for example, surfactants other than component (d), components (b), and components other than component (c). Liquid oils, oily gelling agents, glycols, lower alcohols other than component (a), water, ultraviolet absorbers, antioxidants, cosmetic ingredients, pigments, pigments, powders, preservatives, fragrances and the like of the present invention It can be blended in a quantitative and qualitative range that does not impair the effect, and is obtained by a method for producing a normal cosmetic.

The oily skin cleanser in the present invention may become a two-layer oily skin cleanser by blending the above optional components and the like. Even in such a case, the desired effect can be obtained by shaking at the time of use.

  EXAMPLES Next, although an Example demonstrates this invention in detail, this invention is not limited at all by these.

Oily skin cleanser: Products 1 to 10 of the present invention and Comparative products 1 to 7
The oily skin cleanser having the composition shown in Tables 1 to 3 was prepared by the manufacturing method shown below, and “familiarity with lipstick (= detergency)” and “cleaning” when washing off the lipstick prepared by the following formulation and manufacturing method. The subsequent “no stickiness” and “stability over time” were evaluated by the following evaluation methods and criteria, and the results are shown in Tables 1 to 3.

Example of lipstick formula (component) (%)
1. Microcrystalline wax 9.0
2. Polyethylene wax (average molecular weight 5000) 8.0
3. Isotridecyl isononanoate 5.0
4). Refined jojoba oil 0.2
5. Lanolin 8.0
6). Diisostearyl malate 20.2
7). Glyceryl tri-2-ethylhexanoate 21.0
8). Isopropyl myristate 8.0
9. Decamethylcyclopentasiloxane 6.0
10. Trimethylsiloxysilicic acid 3.0
11. (Alkyl acrylate / dimethicone) copolymer 3.0
12 Mica titanium 3.0
13. Titanium dioxide 3.0
14 Yellow No. 4 aluminum lake 0.6
15. Red No. 202 1.0
16. Red 226 0.2
17. Natural vitamin E Perfume

Lipstick production method A: Components 10 and 11 are mixed and dissolved in component 9.
B: A and components 1 to 8 and 12 to 18 are heated and dissolved, and then roller-treated.
C: B was filled and molded into a container to obtain a lipstick.

(Production method)
According to each formulation shown in Tables 1-3, components 1-8, 11-13, which are oily components, and components 9-10, which are nonionic surfactants, are mixed and stirred uniformly, and filled into a container. An oily skin cleanser was obtained.

(Evaluation method)
For the products of the present invention and comparative products, the following evaluation items b and c are subjected to a use test by 20 specialist panels, and each sample is evaluated in 7 stages using the following absolute evaluation criteria. Based on the average value, it was determined using the following criteria. The stability over time of the evaluation item c was determined after standing for 1 month at room temperature and 5 ° C., and then the appearance of each sample was determined according to the following four-step criteria of “determination of stability over time”.

(Evaluation item)
a. Familiarity with lipstick (= detergency)
b. No stickiness after washing c. Stability over time (absolute evaluation criteria)
(Score): (Evaluation)
6: Very good 5: Good 4: Somewhat good 3: Normal 2: Somewhat bad 1: Bad 0: Very bad (judgment criteria)
(Judgment): (Average score)
◎: More than 5 points: Very good ○: More than 3 points, 5 points or less: Good △: More than 1 point, 3 points or less: Slightly poor ×: 1 point or less: Defect <Determining stability over time>
A: There is no difference between 5 ° C. and room temperature standing, and it is uniform. ○: Slight separation is observed on the surface left at 5 ° C., but there is no problem.
(Triangle | delta): Separation is clearly seen on the surface left at 5 degreeC.
X: Separation is observed on both surfaces at room temperature and at 5 ° C.

  As is clear from the results in Tables 1 to 3, the oily skin cleansing agents of the products 1 to 10 of the present invention have “familiarity with lipstick (= detergency)”, “no stickiness after washing”, “stable over time” It had excellent characteristics in terms of “performance”. On the other hand, comparative product 1 in which component (c) is not blended and comparative product 2 in which diglyceryl tetraisostearate is blended instead of component (c) have poor temporal stability and the amount of component (a) is small. Comparative product 3 has a familiarity with lipstick and a sticky feeling after washing, and comparative product 4 with a large amount of component (a) and a small amount of component (c) has poor familiarity with lipstick and stability over time, Comparative product 5 with a large amount of component (b) has a sticky feeling after washing, and comparative product 6 with a small amount of component (b) has poor compatibility with lipsticks and does not contain component (d). No. 7 had familiarity with lipstick and a sticky feeling after washing.

Invention product 11 Liquid oily skin cleanser for removing sunscreen (component) (%)
1. Remaining amount of cetyl ethyl hexanoate Liquid paraffin 30.0
3. Diglyceryl diisostearate 5.0
4). Ethanol 10.0
5. Jojoba oil 10.0
6). Squalane 20.0
7). Decamethylcyclopentasiloxane 5.0
8). Fragrance 0.1
9. Rose oil 0.02
10. Stearyl glycyrrhetinate 0.1
11. Isostearic acid 4.0
12 Tetraoleic acid polyoxyethylene sorbit (HLB11.5) 3.5
13. Neopentyl glycol dicaprate 3.0
14 Appropriate amount of phenoxyethanol

(Production method)
A part of component 10 and component 6 are heated and dissolved, and after cooling, the rest of component 6 and components 1-5, components 7-9, and components 11-14 are mixed uniformly to remove the sunscreen and remove liquid oily skin. I got a fee.

The product 11 of the present invention is an excellent liquid oil for removing sunscreen from the viewpoint of “familiarity with sunscreen (= cleanability)”, “no stickiness after cleaning”, and “stability over time”. It was a skin cleanser.

Invention product 12 Oily skin cleanser (component) (%)
1. 1. Glyceryl tri-2-ethylhexanoate Dextrin fatty acid ester 10.0
3. Liquid paraffin 25.0
4). Isononyl isononanoate 5.0
5. Diisostearyl malate 10.0
6). Macadamia nut oil 10.0
7). Propanol 10.0
8). Decamethylcyclopentasiloxane 5.0
9. Fragrance 0.1
10. Ethyl oleate 1.0
11. Dibutylhydroxytoluene 0.1
12 Heavy liquid isoparaffin 5.0
13. Oleyl alcohol 0.5
14 Tetraoleic acid polyoxyethylene sorbit (HLB11.5) 2.5
15. Diglyceryl diisostearate 5.0
16. Phenoxyethanol appropriate amount (Note 4) Leopard TT (Chiba Flour Mills)

(Production method)
After 10% of component 1 and component 2 are uniformly mixed and dissolved at 100 ° C., the remainder of component 1 and components 3 to 16 are added thereto, mixed uniformly, and filled into a container. Obtained.

The product 12 of the present invention was an excellent oily skin cleanser in terms of “familiarity with lipstick (= cleanability)”, “no stickiness after cleaning”, and “stability over time”.

Claims (2)

The following components (a) to (d);
(A) C3-C3 monovalent lower alcohol 3-30 mass%
(B) 20 to 80% by mass of hydrocarbon oil which is liquid at 25 ° C.
(C) a component selected from glyceryl tri-2-ethylhexanoate, diisostearyl malate, isononyl isononanoate, neopentyl glycol di-2-ethylhexanoate, octyldodecanol, jojoba alcohol, isostearyl alcohol, and isostearic acid ( an oil agent compatible with a) (d) a nonionic surfactant having a polyoxyethylene chain and having an HLB in the range of 5 to 16 ,
The blending mass ratio (a) / (c) of the component (a) and the component (c) is in the range of 0.2 to 4,
Component (d) is polyoxyethylene sorbit tetraoleate, one or two or der Ru oily skin cleanser selected from triisostearate, polyoxyethylene glyceryl. The oily skin cleanser according to claim 1, wherein the blending mass ratio (a) / (c) of the component (a) and the component (c) is in the range of 0.5-2 .