JP2007015934A - Creamy cosmetic of thermal comfort - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a creamy cosmetic of thermal comfort good in feeling in use, giving the skin oil component and humectancy, and also affording sufficient thermal comfort effect. <P>SOLUTION: The creamy cosmetic of thermal comfort is characterized by containing an oil component, a surfactant and zeolite, using no polyhydric alcohol and being substantially of non-aqueous system. In this cosmetic, the compounding amount of the zeolite is 20-40 wt.% and silica powder 7-40 nm in average particle size is included. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a warming cosmetic material that provides oil replenishment and moisturizing in a warmed state for facial skin and rough skin such as limbs, knees, elbows, and heels.

  When a warming effect is imparted to the skin, blood circulation promotion, relaxation effect, fatigue recovery, and waste metabolism promotion can be achieved. From such a viewpoint, various cosmetics imparted with a warm feeling effect have been developed. For example, those containing polyhydric alcohol utilizing heat of hydration with water (Patent Document 1), those containing zeolite that generates heat by reacting with water in addition to the heat of hydration of polyhydric alcohol (patent Reference 2). Among polyhydric alcohols, polyethylene glycol (hereinafter referred to as PEG) having excellent moisture retention and the like is widely used (Patent Documents 1 and 3).

JP-A-56-57711 (column 3, line 19 to column 4, line 9, column 5, line 13 to end) JP-A-8-59455 (paragraph number 0007) JP-A-6-1000041 (paragraph number 0008)

  However, since polyhydric alcohols basically contain more water than oil components, there is a problem that the temperature rise is lowered by that amount, or gas is generated and the container expands. For this reason, these warming cosmetics are substantially non-aqueous to improve the heat build-up when applied to the skin, but become ointment only by containing PEG, surfactant and zeolite. In other words, it was not sticky and poorly stretched. Although it is not impossible to make it creamy by adding oil components and other ingredients to this, it requires a lot of labor, such as adjusting the formulation and complicating the production line. There was also a limit to improving the feeling of use.

  In order to solve the above-mentioned problems, the present inventor has completed the present invention as a result of investigating creamy cosmetics that replace polyhydric alcohols such as PEG. An object of the present invention is to obtain a creamy warming cosmetic that has a good feeling of use, gives the oil component and moisturizing to the skin, and provides a sufficient warming effect.

  The warm cream cosmetic according to the present invention contains an oil component, a surfactant, and a zeolite (excluding polyhydric alcohol) and is substantially non-aqueous. Here, “substantially non-aqueous” means that the cosmetic does not contain moisture at all, or even if contained, it is less than 0.1%, preferably less than 0.01%, based on the total weight. This means that it is excluded when it is unavoidably contained in each component attached as other components as described later.

  The compounding quantity of a zeolite can be 20-40 weight%. Furthermore, a silica powder having an average particle diameter of 7 to 40 nm can be contained.

  According to the warm cream cosmetic according to the present invention, an oil component is used as a main component instead of a polyhydric alcohol such as PEG, and a surfactant and zeolite are blended therein. Cosmetics are obtained. Specifically, since the oil component is the main component, a feel close to sebum can be obtained, and an emollient effect can be obtained in which the skin is softened to protect keratinous moisture. Since the oil component has a lower water content than polyhydric alcohols, the cream cosmetic can be easily made non-aqueous. Since the surfactant is mixed, not only is it easy to produce a smooth and fine creamy warm-use cosmetic with a good feeling of use, but also the roughness when applied to the skin by preventing the aggregation of zeolite particles due to moisture. In addition, it captures moisture on the skin accurately and fully exhibits the warming effect. If it is creamy, the medicinal properties are better penetrating into the skin than an ointment, and it is easy to wash off.

  When the blending amount of zeolite is adjusted to 20 to 40% by weight, an appropriate warm feeling can be obtained while maintaining a suitable cream shape. That is, there is no inconvenience that the warming effect cannot be felt, the temperature rise is too great, and burns are caused, or the cream is irritated.

  Furthermore, when silica powder with an average particle diameter of 7 to 40 nm is contained, a high thixotropic effect can be obtained, and even if the viscosity is high and hardened in a stationary state when not in use, the container is shaken or cream is used. If it is stirred on the skin, the viscosity of the cream decreases and fluidity appears, so that smooth elongation and a pleasant feeling of use can be ensured. Since the silica powder is in the form of ultrafine particles, the cream can be kept smooth and the specific surface area of the silica powder can be increased to increase the viscosity of the cream. Therefore, even if the cream container is tilted, the cream can be prevented from inadvertently spilling from the container.

  The warm cream cosmetic according to the present invention contains an oil component, a surfactant, and zeolite, and is substantially non-aqueous. In particular, polyhydric alcohols such as PEG are not used in the present invention.

  The oil component as the main component of the warm cream cosmetic is not particularly limited as long as it is usually used in cosmetics, and rapeseed oil, safflower oil, soybean oil, camellia oil, avocado oil, olive oil, orange oil, chamomile Oil, kukui nut oil, cinnamon oil, castor oil, sesame oil, wheat germ oil, rice bran oil, rice germ oil, sasanqua oil, safflower oil, sage oil, turtle oil, thyme oil, thyme oil, clove oil, evening primrose oil, corn Oil, pearl oil, sunflower oil, palm oil, eucalyptus oil, peanut oil, lavender oil, rosemary oil, beef tallow, liquid paraffin, palm oil, horse oil, mink oil, silicone oil, egg yolk oil, behenyl alcohol, etc. Fatty acids, fatty acid esters, and the like of fats and oils can be used, and these may be used alone or in combination of two or more. Among these, squalene, squalane, jojoba oil and the like having a composition close to that of human skin are preferable.

  The surfactant may be appropriately selected according to the oil component and other components, and an anionic surfactant, a cationic surfactant, a nonionic surfactant or an amphoteric surfactant can be used. Also good. Among these, anionic surfactants can be suitably used. For example, higher fatty acid esters, higher alkyl sulfates, alkyl ether sulfates, phosphate esters, sulfate esters, N-acyl sarcosinates, higher fatty acid amide sulfonates, sulfosuccinates. Acid salts, N-acyl glutamates, sulfated oils, sodium lauroyl monoethanolamide succinate, ditriethanolamine N-palmitoyl aspartate, sodium caseinate and the like. Among these, higher fatty acid esters such as glycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, and polyoxyethylene sorbite fatty acid ester are preferable.

  The blending amount of the surfactant is 5 to 20% by weight, preferably 9 to 13%. However, the blending may be performed so that the ratio of the oil component to the surfactant is approximately 4 to 1. Most preferred. If the blending amount is less than 5% by weight, the wetness between the oil component and the zeolite is poor, and the cream becomes dry and a smooth cream cannot be obtained. In addition, it is difficult to accurately capture the moisture on the skin, and the familiarity between the cream and the skin is deteriorated, so that the warmth as the theoretical temperature rise cannot be obtained. If the blending amount exceeds 20% by weight, there is no significant difference in the smoothness of the cream, so there is no point in blending any more, and foaming occurs when the warming cream is applied to the skin and mixed with moisture. Because it will end up.

The zeolite blended in the warm cream cosmetic of the present invention has the chemical formula: _x Na ₂ O · _y K ₂ O · _z CaO · Al ₂ O ₃ · αSO ₂ (x, y, z = 0 to 1 and x + y + z = 1. , Α = 2 to 2.5), and those produced by a usual method, and those subjected to special treatment such as ion exchange treatment can be used. The particle size of the zeolite is preferably 0.1 to 200 μm from the viewpoint of heat generation rate, usability and the like.

  The blending amount of zeolite is 20 to 40% by weight, preferably 25 to 36% by weight. This is because if the blending amount of the zeolite is less than 20% by weight, the warming effect cannot be sufficiently obtained, and if it exceeds 40% by weight, the smoothness of the warming cream cannot be maintained. Moreover, if it is 25-30 weight%, even if there are few compounding quantities of surfactant, the usability | use_condition as a cream is securable.

  In the warm cream cosmetic of the present invention, the moisture on the skin surface when it is applied or the moisture generated from the skin after application is adsorbed on the zeolite blended in the warm cream to generate heat, and the temperature is It rises and feels warm. Thereby, various effects such as blood circulation promotion, relaxation effect, fatigue recovery, and waste metabolism promotion are obtained. Since the oil component is the main component, the skin, especially the keratin, is replenished with oil, thereby preventing the evaporation of moisture and maintaining the moisturizing effect.

  Zeolite is scientifically inactive in non-aqueous creams, but by adding a surfactant, it is uniformly dispersed and a smoother and finer cream is obtained. When the cream is applied to the skin, the water is emulsified and the water is efficiently adsorbed without applying physical force, and the adsorbed water and the zeolite are activated to improve the warming effect.

Silica powder is further blended in the warm cream cosmetic of the present invention. Due to this, due to the action of silanol groups (S—OH) present on the surface of silica (SO ₂ ), the warm cream has a high viscosity in a stationary state, but if this is stirred or vibrated, the decoction stress The so-called thixotropy effect, in which the viscosity is reduced by the above, is obtained. That is, the warm cream becomes smoother and finer, and the elongation when applied to the skin is improved.

  The silica powder has an average particle size of 7 to 40 nm, preferably 10 to 20 nm. For example, commercially available “Aerosil” (manufactured by Nippon Aerosil Co., Ltd.) having an average particle size of 14 nm is suitable. The average particle size of the silica powder is set to 7 nm or more. The finer the silica powder, the better. However, the minimum particle size of silica powder that can be mass-produced industrially is currently 7 nm. This is because the production cost increases, and if the average particle size exceeds 40 nm, the cream cosmetic becomes dull and a good thixotropic effect cannot be obtained.

  In addition to the above components, the warm cream cosmetic of the present invention can contain various components according to its use within a range not impairing the effects of the present invention. The ingredients include, for example, vitamin E, which has an antioxidant and blood circulation promoting effect, as well as preservatives, ultraviolet absorbers, bactericides, various plant extracts, pigments, and fragrances. What is necessary is just to select suitably in the range which does not impair the effect of this invention.

  The warm cream cosmetic composition of the present invention can be applied to the skin of the body as a moisturizing or whitening pack cream, massage cream or peeling cream, and especially the face most requiring a beautiful skin effect, palms and knees that are prone to rough skin. Use on elbows or heels.

(Example)
Next, it demonstrates concretely based on an Example and a comparative example. Each Example of the present invention was produced by a conventional method with the composition (% by weight) shown in the upper column of Table 1, and the state of the cream and the feeling of use were observed and evaluated. The results are shown in the middle column of Table 1. In addition, as shown in Table 1, the warming cream cosmetic of the present invention does not use polyhydric alcohols and is substantially non-aqueous. At the same time, various comparative examples were produced in the usual manner with the compositions (% by weight) shown in the upper column of Table 2, and the same observations and evaluations as in the examples were performed. The results are shown in the middle column of Table 2.

“Cream state” is an evaluation based on the feel of a finger when an appropriate amount (about 0.3 g) is taken on the finger. “Cream elongation / use feeling” is an evaluation based on the ease of elongation and the feel of the skin after applying the cream to the skin of the arm as it is after observing the state of the cream. The “warmth when applied to the skin” is an evaluation based on the actual warmth felt on the arm at that time. The evaluation symbols represent the following meanings.
◎: The state is very good and suitable ○: The state is good and suitable △: The state is slightly bad and not very suitable ×: The state is bad and unsuitable

  In addition, in order to measure the theoretical temperature change separately from the actual warmth, 20 ml of each of the creams of each Example and Comparative Example was collected in a reaction dish, and various amounts of water were added while mixing the cream. The temperature at the time was measured. The results are shown in the lower column of Tables 1 and 2.

  As can be seen from Table 1, the warming cream containing zeolite in the range of 20 to 40% by weight is good in cream state, elongation, feeling of use and warmth, and the theoretical temperature rise is the same as that of the conventional product. Thus, it can be seen that a temperature increase equal to or higher than that of Comparative Examples 6 to 8 containing PEG can be secured. More preferable results are obtained when zeolite is blended in the range of 25 to 36% by weight.

  On the other hand, as is clear from Table 2, in Comparative Example 1, since the blending ratio of zeolite was as low as 15% by weight, a good warm feeling was not obtained. In Comparative Example 2 where the blending ratio of the zeolite was 45% by weight, the cream did not come into contact with the finger, and it was not very usable.

  Since Comparative Example 3-4 has mix | blended surfactant, it turns out that the state of a cream is inferior compared with each Example, and in Comparative Example 5, it is not suitable for use by Papasa. Further, the theoretical temperature rise is similar to that of the other examples, but in reality, the warmth as in each example was not obtained. This is probably because the moisture on the skin cannot be accurately captured and the familiarity between the cream and the skin is poor. However, if the blending ratio of zeolite was 24 to 30% by weight, a relatively good feeling in use was obtained.

  Comparative Example 6 containing PEG as a main component was in the form of an ointment, and good usability as in each Example was not obtained. Although Comparative Examples 7 and 8 in which PEG and an oil component are blended are creamy, the cream state is not as good as each Example due to the inclusion of PEG, and the elongation and feeling of use of the cream are inferior. I understand.

Claims (3)

  A warm cream cosmetic containing an oil component, a surfactant, and zeolite (excluding polyhydric alcohol) and substantially non-aqueous.   The warm cream cosmetic according to claim 1, wherein the blending amount of zeolite is 20 to 40% by weight.   The warm cream cosmetic according to claim 3, comprising silica powder having an average particle size of 7 to 40 nm.