JP2019099524A - Skin cosmetics - Google Patents

Abstract

To provide skin cosmetics that have skin fitness and slipperiness during its application, give a fresh feeling, and create a sensation of coolness after the application.SOLUTION: The present invention provides skin cosmetics containing following components (A)-(C): (A) a thickener that is neutralized with an alkali agent for use, (B) a polyoxyalkylene glycol that is liquid under 25°C conditions, and (C) ethanol, with a ratio between component (B) and component (C), (C)/(B), of 0.1-200.SELECTED DRAWING: None

Description

  The present invention relates to a skin cosmetic which has good familiarity and slippage during application, can obtain a fresh feeling, and has a refreshing feeling after application.

  With the recent rise in temperature, there are many cases where a cooler is used as a means to get through the hot season, and a refreshing feeling can be easily obtained. However, there are individual differences in how the temperature is felt, and because there is a difference between the temperature that each of the cold person and the hot person is satisfied with, there are multiple people in the same environment such as school classrooms, offices, and work places. If you spend time in one, either one often has dissatisfaction.

  People who are in cold weather often fall ill if they put too much cooler on too much, which puts emphasis on temperature control. On the other hand, it is preferable to minimize the operation of the cooler because the overdriving of the cooler is against the intention while saving and saving intentions are increasing. Not satisfied with temperature and stressed. Therefore, in order to spend a hot time comfortably while minimizing the use of a cooler so that people in the cold and people in the heat can spend stress-free in the same environment, a cosmetic that can get a refreshing feeling after application Many have been proposed.

  Generally, compounds having a refreshing feeling include monoterpenes represented by menthol. However, it is preferable to keep the content to a minimum, since a high content of monoterpenes may be accompanied by a strong smell and there is a risk of loss of palatability. From the above background, there has been a strong demand for the development of a cosmetic that can provide a comfort that relieves stress in a high temperature environment while suppressing the content of compounds having a refreshing sensation.

  Patent Document 1 discloses an external composition for skin intended to obtain a feeling of cooling over a long period of time with a monoterpene represented by menthol.

  Patent Document 2 discloses a skin cosmetic for the purpose of improving the temporal stability while obtaining a refreshing skin feel and refreshing feeling by high molecular weight polyethylene glycol and a low content of high content alcohol.

JP, 2013-116870, A Japanese Patent Application Publication No. 2003-231608

  An object of the present invention is to propose a skin cosmetic which has good familiarity and slip during application, can obtain a fresh feeling, and has a refreshing feeling after application.

  Although the technology described in Patent Document 1 can obtain a strong refreshing sensation, monoterpenes and monoterpene-containing essential oils generally emit strong odors, and they tend to dislike the odor depending on the preference of the user. Therefore, it is preferable not to highly contain a component with strong smell such as monoterpene.

  Although the technology described in Patent Document 2 can obtain refreshing skin feel, cool feeling, and stability over time, high-molecular polyethylene glycol has poor slip during coating and is not fresh feeling, so under high temperature conditions It is difficult to relieve stress.

  As a result of intensive studies to solve the above problems, the present inventor found that only the refreshing sensation after application is applied in order to obtain the comfort of relieving stress in a high temperature environment while suppressing the inclusion of the compound having a refreshing sensation. Rather, getting freshness during application was considered to be one of the preferred solutions. Specifically, the present invention was achieved by proposing a skin cosmetic containing a thickener to be used after neutralization with an alkaline agent, a polyoxyalkylene glycol which is liquid at 25 ° C., and ethanol. .

  According to the present invention, it is possible to provide a skin cosmetic which has good familiarity and sliding during application, can obtain a fresh feeling, and has a refreshing feeling after application.

  Furthermore, according to the present invention, by containing a polyether-modified silicone, there is provided a skin cosmetic which can obtain a smooth feeling after application.

  Hereinafter, the present invention will be described in detail. In addition, the unit which shows content is all the mass% unless otherwise indicated.

The present invention provides the following components (A) to (C)
(A) Thickener used by neutralizing with an alkaline agent (B) containing polyoxyalkylene glycol (C) ethanol which is liquid under 25 ° C. conditions, and the content ratio of component (B) to component (C) ( C) / (B) is 0.1 to 200, which is a cosmetic for skin.

  The thickener to be used after neutralization with the component (A) alkaline agent contained in the embodiment of the present invention is not particularly limited as long as it is used after adjusting the pH with the alkaline agent.

  As a specific example of the thickener used by neutralizing with the said component (A) alkaline agent, a carboxy vinyl polymer, an acrylic acid * alkyl methacrylate copolymer etc. are mentioned, for example. Among them, acrylic acid / alkyl methacrylate copolymer is preferable from the viewpoint of familiarity during coating. Moreover, these may be contained 1 type or 2 types or more.

  The familiarity in the present invention is the ease of breaking when the cosmetic having an appropriate viscosity is applied to the skin.

  The content of the thickener to be used after neutralization with the component (A) alkaline agent is not particularly limited, but it is preferably 0.05 to 2.00% from the viewpoint of familiarity during coating 0.10 to 1.00% is more preferable. If the content of the thickener used after neutralization with the component (A) alkaline agent is less than 0.05%, the viscosity of the cosmetic may be low and it may be difficult to obtain a feeling of crumbling and adapting, so coating There is a risk that the familiarity inside will be lost. On the other hand, if it exceeds 2.00%, the viscosity of the cosmetic may be high, and the cosmetic may be less likely to break, so the familiarity during application may be impaired.

  Although it does not specifically limit as a specific example of the alkaline agent which neutralizes the said component (A) thickener, For example, potassium hydroxide, 2-amino- 2-methyl- 1, 3- propanediol, L-arginine, morpholine and the like can be mentioned.

  The content of the alkaline agent for neutralizing the component (A) thickener is not particularly limited, but from the viewpoint of familiarity during application, the pH of the cosmetic is 4.0 to 9.0. It is preferable to contain a proper amount so that it may adjust, and 5.0-8.0 are more preferable. If the pH is less than 4.0, the viscosity of the cosmetic may be low, which may make it difficult to obtain a feeling of breaking and adapting, so that the familiarity during application may be impaired. On the other hand, when the pH is more than 9.0, the viscosity of the cosmetic is high, and the cosmetic may be less likely to break, so the familiarity during application may be impaired.

  Component (B) contained in the embodiment of the present invention is not particularly limited as long as the polyoxyalkylene glycol which is liquid at 25 ° C. contains a repeating structure generated by polymerization in the molecule. .

  Examples of the polyoxyalkylene glycol which is liquid at 25 ° C. as the component (B) are not particularly limited, but polyethylene glycol, polypropylene glycol, polybutylene glycol, polyglycerin, polyoxyethylene glycerin, or The polyoxyalkylene glycol etc. which contain 1 or more types chosen from ethyleneoxy group, a propylene oxy group, a butylene oxy group, and glyceryl group 2 or more types in a molecule | numerator are mentioned. Among them, polyethylene glycol is preferred from the viewpoint of slipperiness during coating. The average molecular weight of polyethylene glycol is preferably 200 to 600, and more preferably 200. One or more of these may be contained. It is not preferable to contain solid polyoxyalkylene glycol under 25 ° C. conditions because the slip during coating is poor and the fresh feeling is lost.

  The content of the polyoxyalkylene glycol which is liquid under the condition of the component (B) at 25 ° C. is not particularly limited, but it is preferably 0.05 to 10.00% from the viewpoint of the slip during coating 0.10 to 5.00% is more preferable. Component (B) When the polyoxyalkylene glycol content of the liquid is less than 0.05% or more than 10.00% at 25 ° C., the slipperiness during coating may be impaired.

  Although content of component (C) ethanol contained in embodiment of this invention is not specifically limited, From a viewpoint of the cool feeling after application, 0.5 to 20.0% is preferable, and 1. 0 to 20.0% is more preferable. If the content of the component (C) ethanol is less than 0.5%, the cooling sensation may be impaired, and even if it exceeds 20.0%, it is unlikely that the cooling sensation will be further intensified.

  The content ratio (C) / (B) of the polyoxyalkylene glycol liquid and the component (C) ethanol which are liquid under the condition of the component (B) at 25 ° C. is 0.1 to 200 from the viewpoint of freshness during coating. Preferably, 0.5 to 100 is more preferable, and 1 to 50 is more preferable. When the content ratio (C) / (B) of the polyoxyalkylene glycol liquid to the component (C) ethanol is less than 0.05 or more than 400 under the condition of the component (B) at 25 ° C. Is not preferable because it

  The term "freshness" as used in the present invention means to obtain a feeling as if it were wet with water during application, and it is possible to obtain comfort that greatly relieves stress in a high temperature environment. Also, the freshness in the present invention is different from the feeling expressed as moisturizing, moistening, moistening and the like. The freshness in the present invention is a sensation felt on the skin during application, whereas moisture, moistness and moisture are sensations felt in the skin after application.

  The cosmetic composition may contain component (D) polyether-modified silicone, since it is one of the most suitable embodiments to obtain a smooth feel after application and maintain a comfortable state.

  Specific examples of the component (D) polyether-modified silicone are not particularly limited, but polyoxyethylene-methylpolysiloxane copolymer, poly (oxyethylene-oxypropylene) methylpolysiloxane copolymer, etc. Can be mentioned.

  The content of the component (D) polyether-modified silicone is not particularly limited, but is preferably 0.01 to 10.00% from the viewpoint of the dry feeling after application. If the content of the component (D) polyether-modified silicone is less than 0.01% or more than 10.00%, there is a risk that the dry feeling after application may be impaired.

  Although the viscosity of the said cosmetics is not specifically limited, It is preferable that it is 1,000-10,000 mPa * s. If the viscosity of the cosmetic is less than 1,000 mPa · s, the viscosity of the cosmetic may be low, which may make it difficult to obtain a feeling of breaking and adapting, and thus the familiarity during application may be impaired. On the other hand, if the viscosity of the cosmetic exceeds 10,000 mPa · s, the viscosity of the cosmetic may be high and the cosmetic may be less likely to collapse, so that the familiarity during application may be impaired.

  In the present invention, 120 g of the cosmetic prepared by the conventional method is filled in a sample bottle (food 140: manufactured by Daiichi Glass Co., Ltd.) and left to stand at 25 ° C. for 24 hours. The viscosity was measured with a viscometer (model: digital viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) using an M4 rotor at 25 ° C. and 60 rpm for 1 minute.

  Other, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, solvents, moisturizers, vitamins, preservatives, antioxidants, UV absorbers, chelating agents, It may contain a coloring agent, a flavor, a plant extract and the like, and may contain one or more kinds.

  EXAMPLES The present invention will be described in more detail by way of the following examples, which are not intended to limit the present invention. In addition, adjustment to pH 5.5 in Tables 1-6 means containing an alkaline agent and preparing so that pH as a final formulation may be 5.5.

  Each cosmetic item shown in Tables 1 to 5 is prepared according to a conventional method and applied to the inside of the upper arm with bare hands, so that each evaluation item, ie, familiarity during application, slipperiness during application, The evaluation test was done regarding the refreshing feeling after application, and the freshness during application. In addition to the four evaluation items described above, the cosmetic shown in Table 6 is prepared by a conventional method and applied to the inside of the upper arm with bare hands, and the evaluation test is also performed on the dry feeling after application. The

(Evaluation method)
Ten panelists used the said cosmetics and performed sensory evaluation about each item. Each person is rated on a scale of 5 on a scale of 5 (very good), 4 (good), 3 (can't say), 2 (bad), 1 (very bad) for each item. After calculating the average point of, it determined according to the following determination criteria.

(Criteria for judging average points)
4.0 points or more: ◎
3.0 points or more: ○
2.0 points or more: △
Less than 2.0 points: ×

(First evaluation test)
In the first evaluation test, the cosmetic was evaluated with respect to the type and content of the component (A). Table 1 shows the components of the cosmetic, the content thereof, and the evaluation results.

  From Examples 1 to 7 shown in Table 1, good results were obtained with respect to familiarity during coating, slipperiness during coating, refreshing feeling after coating, and freshness during coating.

(2nd evaluation test)
In the second evaluation test, the cosmetic was evaluated with respect to pH. Table 2 shows the components of the cosmetic, the content thereof, and the evaluation results.

  From Examples 8 to 12 shown in Table 2, good results were obtained regarding the familiarity during coating, the slipperiness during coating, the cooling feeling after coating, and the freshness during coating.

(Third evaluation test)
In the third evaluation test, the cosmetic was evaluated with respect to the content ratio (C) / (B) of the component (B) to the component (C) and the type of the component (B). Tables 3 to 5 show the components of the cosmetic, the contents thereof, and the evaluation results.

  From Examples 13 to 29 shown in Tables 3 to 5, good results were obtained with respect to familiarity during coating, slipperiness during coating, refreshing feeling after coating, and freshness during coating.

(4th evaluation test)
In the fourth evaluation test, the cosmetic was evaluated with respect to the content of the component (D). Table 6 shows the components of the cosmetic, the content thereof, and the evaluation results.

From Examples 30 to 36 shown in Table 6, good results were obtained with respect to familiarity during application, slipperiness during application, refreshing feeling after application, freshness during application, and dry feeling after application. .

  The cosmetic composition of Example 37 is described below.

  The cosmetic obtained according to the following examples gives good results in terms of familiarity during application, slipperiness during application, refreshing feeling after application, freshness during application, and dry feeling after application. The

Example 37
Component content (%)
(A) Acrylic acid / methacrylic acid alkyl copolymer 0.5
(B) Polyethylene glycol 200 1.0
(C) Ethanol 5.0
(D) Polyoxyethylene-methylpolysiloxane copolymer 0.5
1,3-butylene glycol 5.0
Edetate disodium 0.1
Methyl parahydroxybenzoate 0.1
2-amino-2-methyl-1,3-propanediol pH adjusted to 6.0 Jojoba seed oil 0.1
Argania Spinosa nuclear oil 0.1
Water soluble collagen 0.1
Aloe vera juice 0.1
Hamameris leaf extract 0.1
Himefuro Extract 0.1
Appropriate amount of perfume Purified water Total 100.0

  The cosmetic obtained in Example 37 gave good results in terms of familiarity during application, slipperiness during application, refreshing feeling after application, freshness during application, and dry feeling after application. .

  INDUSTRIAL APPLICABILITY The present invention can provide a skin cosmetic that has good familiarity and slip during application, can obtain a fresh feeling, and has a refreshing feeling after application.

Claims (2)

Next component (A) to (C)
(A) Thickener used by neutralizing with an alkaline agent (B) containing polyoxyalkylene glycol (C) ethanol which is liquid under 25 ° C. conditions, and the content ratio of component (B) to component (C) ( C) / (B) is 0.1 to 200, and it is a cosmetic for skin. Next ingredient (D)
The cosmetic for skin according to claim 1, which contains (D) a polyether-modified silicone.