JP2008247782A - Face-cleansing cosmetic composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new fatty acid soap-based cream-shaped face-cleansing cosmetic composition having excellent stability by preventing the temperature-dependent viscosity increase with time in the fatty acid soap-based cream-shaped face-cleansing cosmetic composition. <P>SOLUTION: The fatty acid soap-based cream-shaped face-cleansing cosmetic composition contains dipotassium glycyrrhizinate and/or potassium acetate to prevent the temperature-dependent viscosity increase. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fatty acid soap-based cream facial cleansing composition, and in particular, to a fatty acid soap-based cream facial cleansing composition containing a component for preventing the composition from increasing in viscosity over time.

  Fatty acid soap cream cleansing compositions are widely used in the skin care field as preparations that are useful in terms of function, usability, and feel in use, as compared with other properties such as liquid and solid.

  This is used for facial cleansing, etc., by neutralizing the fatty acid soap, which is the main component of the detergent, by neutralizing the fatty acid, leaving some of the fatty acid used in the state of free fatty acid. When done, it does not degrease the skin too much, creating a mild cleanability and a smooth feel to the skin.

  However, the neutralization of the fatty acid is not performed 100%, and leaving a part of the fatty acid to be used in the state of free fatty acid adversely affects the stability. This is because the fatty acid soap-based cream facial cleanser is not a stable system, so that a slight change in the environment (temperature) immediately affects the preparation. In particular, when stored under a high temperature environment of 30 ° C. or higher for a long period of time and then used under a normal temperature to a low temperature environment, crystallization precipitation due to the free fatty acid or recrystallization (solidification) of the fatty acid soap itself, etc. As a result, the structural viscosity of the fatty acid soap-based cream cleansing composition increases with time, and when used, it becomes very difficult to remove from a container such as a tube, and the commercial value is impaired.

There is no satisfactory solution for such a problem yet, and the current situation is that the individual prescription is urgently dealt with by trial and error in the formulation research. In addition, detergents and cosmetics have a prior art containing dipotassium glycyrrhizinate or potassium acetate with respect to stabilization and thickening of the system. However, Patent Document 1 is a patent relating to the solidification stability of water-based solidified cosmetics, which contains dipotassium glycyrrhizinate as a solidifying component, and is a fatty acid soap-based cream facial cleanser. There is no suggestion regarding prevention of temperature-dependent viscosity increase with time. Further, Patent Document 2 is a system stabilization technique related to a liquid cleaning composition, and no description suggesting any fatty acid soap-based cream facial cleansing is found. Therefore, it has not suggested or solved the problem that it becomes difficult to remove from a container such as a tube due to the temperature-dependent viscosity increase with time.
Japanese Patent Laid-Open No. 9-100212 Japanese Patent No. 3217357

  The object of the present invention is to provide a fatty acid soap-based cream facial cleansing composition that prevents temperature-dependent viscosity increase with time, has little temperature-dependent viscosity increase in any environment, and is a novel fatty acid soap that is excellent in usability It is to provide a creamy facial cleanser.

  As a result of diligent research, the present inventors have found that dipotassium glycyrrhizinate and / or potassium acetate has an effect of preventing temperature-dependent viscosity increase in a fatty acid soap-based cream facial cleansing composition, and has led to the present invention. . That is, by adding dipotassium glycyrrhizinate and / or potassium acetate to a fatty acid soap-based cream facial cleansing composition, a temperature-dependent viscosity increase with time is small in any environment, and a novel fatty acid soap-based cream excellent in usability It was possible to provide a facial cleanser.

  ADVANTAGE OF THE INVENTION According to this invention, the novel fatty-acid soap type cream face wash composition excellent in stability can be provided. In particular, after being stored for a long time in a high temperature environment of 30 ° C. or higher, when used under a normal temperature to a low temperature environment, it is possible to prevent the problem that it becomes difficult to remove from the tube container due to an increase in viscosity. In addition, the temperature-dependent viscosity increase with time was small, and it was possible to provide a novel fatty acid soap-based cream facial cleanser with excellent usability.

  The dipotassium glycyrrhizinate used in the present invention is not particularly limited as long as it is represented by the general formula (I). Moreover, preferable content is 0.025 to 0.5 weight% with respect to the face-washing composition whole quantity, Most preferably, it is 0.05 to 0.3 weight%.

The potassium acetate used in the present invention is not particularly limited as long as it is represented by the general formula (II). Moreover, preferable content is 0.001-1.0 weight% with respect to the face wash composition whole quantity, Most preferably, it is 0.025-0.5 weight%.

  In the composition of the present invention, in addition to the above-mentioned fatty acids, if necessary, various components generally used in cosmetics within a range not impairing the effects of the present invention, for example, oily components, surfactants, humectants, Antioxidants, preservatives, thickeners and the like can be blended.

  Hereinafter, the present invention will be specifically described with reference to examples. Note that the present invention is not limited to this.

  With the components shown in Table 1, Examples 1 to 4 which are the facial cleansing compositions of the present invention were prepared. At the same time, Comparative Example 1 was prepared with a formulation in which dipotassium glycyrrhizinate and potassium acetate were removed from the face wash composition of this example.

  Table 1 shows formulation examples of the face wash of Examples 1 to 4 and Comparative Example 1. In addition, the face wash was manufactured by the normal manufacturing method, and the sample was obtained.

  Examples 1 to 4 and Comparative Example 1 were subjected to a storage test at 40 ° C. for one month and evaluated according to the evaluation criteria in paragraph 0019. The viscosity was measured after standing for 4 hours at 30 ° C.

〔Evaluation criteria〕
A: Increases or decreases in the range of 0 to 2 Pa · s.
○: Increased in the range of 3 to 5 Pa · s.
(Triangle | delta): It raises in the range of 6-8 Pa.s.
X: It rises in the range of 9-11 Pa.s.
XX: Increased by 12 Pa · s or more.

In Examples 1 to 4, the viscosity change due to temperature was smaller than that in Comparative Example 1. Thereby, it turns out that the face-washing composition of this invention has the effect which prevents a temperature dependent viscosity rise with time compared with the comparative example 1 which does not contain dipotassium glycyrrhizinate or potassium acetate. This indicates that a fatty acid soap-based cream facial cleansing composition can provide a facial cleansing that does not have a temperature-dependent increase in viscosity over time by containing dipotassium glycyrrhizinate or potassium acetate.

  Furthermore, it was subjected to a storage test at 40 ° C. for 1 week using Examples 1 to 4 and Comparative Example 1, and after standing at 5 ° C. for 4 hours, a usability test from a tube container (“Easy to remove from tube” Satisfaction test) was conducted. The evaluation of this test was determined by a specialized panel according to the evaluation criteria described in paragraph 0022, and the results are shown in Table 1.

〔Evaluation criteria〕
A: Easy to take out.
○: Can be produced without a sense of incongruity
Δ: Slightly difficult to produce
X: It is difficult to put out.
XX: It is very difficult to take out.

  As a result, the ease of taking out from the tube was evaluated for usability from the tube container, while the example had no problem with the ease of taking out from the tube, whereas the comparative example was noticeably from the tube container. It was recognized that it was difficult to put out. Thereby, it turns out that the problem that it becomes difficult to take out from a tube container by solidification especially when making it transfer to high temperature environment from low temperature can be prevented.

Since the present invention is a face wash composition with little temperature-dependent viscosity change with time, it can be widely applied to cosmetics and cleaning products.

Claims (1)

A facial cleansing composition comprising a fatty acid soap having C12 to C18, which contains dipotassium glycyrrhizinate and / or potassium acetate.