JP2006022061A - Transparent cleansing cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly transparent cleansing cosmetic good in spreadability when applied to the skin, having high cleansing power on makeup stains and sebum stains even if containing moisture, quickly rinsable, and giving rinsed skin refreshing touch feeling. <P>SOLUTION: The transparent cleansing cosmetic comprises a pasty or waxy nonionic surfactant liquid at room temperature and having an HLB number of ≥6 but smaller than 12, a pasty or waxy nonionic surfactant liquid at room temperature and having an HLB number of ≥12 but smaller than 18 and a polyhydric alcohol in specific proportions. This cosmetic has a viscosity of 50-1,000 cps. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a transparent cleansing cosmetic that has a high detergency, gives a refreshed feel to the skin after rinsing, and has excellent transparency.

  Conventionally, as cleansing cosmetics for removing make-up cosmetics such as sebum stains on the skin, lipsticks, foundations, eye shadows, mascaras, etc., cleansing oils mainly composed of oily bases, gel cleansing agents, cleansing creams, etc. ( For example, Patent Documents 1 to 3), or facial cleansing creams based on aqueous gel cleansing agents or fatty acid soaps are used.

However, cleansing cosmetics mainly composed of an oil-based base have good makeup familiarity, but the feeling of use is oily, and an oily feeling remains sticky after use. Moreover, there existed a problem that stability will deteriorate by containing a water | moisture content and detergency will fall.
In addition, although water-based gel cleansing agents and facial cleansing creams are easy to use, they can be washed off after use, but they all have a heavy spread when applied to the skin, and the removal effect of makeup cosmetics is not sufficient, so it takes time to rinse. There was a problem that it took.

  On the other hand, for the purpose of cleansing power and a refreshing feeling, depending on the raw materials used, there are problems such as white turbidity and liquid separation occurring over time, and in transparent cleansing cosmetics, the above cleansing power and refreshing It was difficult to give a feeling.

  Furthermore, as described above, when the prescription is based on cleansing power, it tends to lack transparency.

Japanese Examined Patent Publication No. 6-99275 Japanese Patent Laid-Open No. 5-208905 JP 2001-335425 A

  In other words, it spreads well when applied to the skin, has a high detergency against makeup stains and sebum stains even when it contains moisture, is quick to rinse, gives a refreshed feel to the skin after rinsing, and is excellent Development of transparent cleansing cosmetics having transparency has been desired.

  As a result of intensive studies in view of the above situation, the present inventor has obtained a specific ratio of two kinds of nonionic surfactants having different HLB values in a liquid state, a paste state or a wax state at normal temperature and a polyhydric alcohol. Combined with a transparent cleansing cosmetic with a specified viscosity, it spreads well when applied to the skin, and has a high detergency against makeup stains and sebum stains even when it contains moisture, and it refreshes the skin after rinsing. In addition, the present inventors have found that it has excellent transparency and completed the present invention.

This invention achieves the said objective with the transparent cleansing cosmetics which contain the following (A)-(C) component and whose viscosity in 30 degreeC is 50-1000 cps.
(A) Nonionic surfactant having a HLB value of 6 or more and less than 12 in the form of liquid, paste or wax at normal temperature 5.0 to 15.0% by mass
(B) Nonionic surfactant that is liquid at normal temperature, pasty or waxy and has an HLB value of 12 or more and less than 18 5.0 to 10.0% by mass
(C) Polyhydric alcohol 20.0-40.0 mass%

  Preferably, the oil content is 1% by mass or less based on the total mass of the cleansing cosmetic.

According to the present invention, although it is not mainly composed of an oily base, it has a high detergency against oil stains, and particularly has high detergency against makeup stains and sebum stains even when it contains moisture. Have Furthermore, the rinsing is quick, and a refreshing feel is imparted to the skin after rinsing.
Moreover, according to this invention, the transparent cleansing cosmetics which have the outstanding transparency are obtained.

  Hereinafter, the configuration of the present invention will be described in detail.

  First, the transparent cleansing cosmetic of the present invention is a cleansing cosmetic having a transmittance of 90% or more at 30 ° C. The transmittance is measured using “ND-300A” (manufactured by Nippon Denshoku Co., Ltd.) with the transmittance (Y value) of purified water in a C light source and two visual fields as 100%.

  The nonionic surfactant (A) used in the present invention is liquid, paste-like or wax-like at room temperature and has an HLB value of 6 or more and less than 12, but is not particularly limited, but sorbitan fatty acid ester, polyglycerin fatty acid ester, poly Oxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxyethylene glyceryl fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkylphenyl ether, polyoxyethylene castor oil, polyoxy Examples include ethylene hydrogenated castor oil.

These nonionic surfactants are selected from those having an HLB value of 6 or more and less than 12, more preferably an HLB value of 7 or more and less than 10, among which polyoxyethylene glyceryl fatty acid ester Polyoxyethylene alkyl ether and polyoxyethylene hydrogenated castor oil are particularly preferable because they are excellent in transparency and storage stability and have excellent cleansing power.
Specifically, polyoxyethylene (5) glyceryl isostearate, polyoxyethylene (6) glyceryl isostearate, polyoxyethylene (8) glyceryl isostearate, polyoxyethylene (10) glyceryl isostearate, polyoxytriisostearate Ethylene (20) glyceryl, polyoxyethylene (30) glyceryl triisostearate, polyoxyethylene (20) glyceryl trioleate, polyoxyethylene (30) glyceryl trioleate, polyoxyethylene (5) glyceryl stearate, tri Stearic acid polyoxyethylene (20) glyceryl, polyoxyethylene (5) cetyl ether, polyoxyethylene (7) cetyl ether, polyoxyethylene (6) oleyl ether, Reoxyethylene (8) oleyl ether, polyoxyethylene (10) oleyl ether, polyoxyethylene (12) oleyl ether, polyoxyethylene (6) stearyl ether, polyoxyethylene (8) stearyl ether, polyoxyethylene (5 ) Lauryl ether, polyoxyethylene (7) lauryl ether, polyoxyethylene (5) hexyl decyl ether, polyoxyethylene (5) isostearyl ether, polyoxyethylene (10) isostearyl ether, polyoxyethylene (10) octyl Dodecyl ether, polyoxyethylene (10) pentadecyl ether, polyoxyethylene (10) behenyl ether, polyoxyethylene (
20) Hardened castor oil and the like.
The cleansing cosmetic composition of the present invention can contain only one of these nonionic surfactants, or a combination of two or more thereof.

  In the cleansing cosmetic of the present invention, it is important that the nonionic surfactant is contained in an amount of 5.0 to 15.0% by mass based on the total mass of the cleansing cosmetic, and more preferably 8.0 to 12.0. The mass% is desirable. This is because a good feeling of use and an excellent cleansing action can be exhibited within this content range.

  The nonionic surfactant (B) used in the present invention is liquid, paste-like or waxy at normal temperature and has an HLB value of 12 or more and less than 18, but is not particularly limited. Polyglycerin fatty acid ester, polyoxyethylene sorbitan fatty acid Examples include esters, polyoxyethylene sorbit fatty acid esters, polyoxyethylene glyceryl fatty acid esters, polyethylene glycol fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, and the like. .

These nonionic surfactants are selected from those having an HLB value of 12 or more and less than 18. More preferably, the HLB value is 13 or more and less than 16, and among these, polyglycerol fatty acid ester, Polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glyceryl fatty acid ester, polyoxyethylene alkyl ether, and polyoxyethylene hydrogenated castor oil are particularly preferable because they have an excellent cleansing power and a refreshing feeling when washed with water.
Specifically, decaglyceryl monoisostearate, hexaglyceryl monolaurate, decaglyceryl monolaurate, decaglyceryl monomyristate, polyoxyethylene (20) sorbitan monostearate, polyoxyethylene (20) sorbitan monoisostearate, mono Oleic acid polyoxyethylene (20) sorbitan, polyoxyethylene (20) glyceryl isostearate, polyoxyethylene (25) glyceryl isostearate, polyoxyethylene (30) glyceryl isostearate, polyoxyethylene (50) glyceryl triisostearate Polyoxyethylene (60) glyceryl triisostearate, polyoxyethylene (60) glyceryl trioleate, polyoxyethylene stearate 15) Glyceryl, polyoxyethylene stearate (20) glyceryl, polyoxyethylene stearate (30) glyceryl, polyoxyethylene (15) cetyl ether, polyoxyethylene (20) cetyl ether, polyoxyethylene (30) cetyl ether , Polyoxyethylene (20) oleyl ether, polyoxyethylene (30) oleyl ether, polyoxyethylene (20) stearyl ether, polyoxyethylene (30) stearyl ether, polyoxyethylene (10) lauryl ether, polyoxyethylene ( 15) Lauryl ether, polyoxyethylene (20) lauryl ether, polyoxyethylene (20) hexyl decyl ether, polyoxyethylene (25) hexyl decyl ether, polyoxy Ethylene (20) isostearyl ether, polyoxyethylene (25) isostearyl ether, polyoxyethylene (25) octyldodecyl ether, polyoxyethylene (25) pentadecyl ether, polyoxyethylene (20) behenyl ether, polyoxyethylene (30) Behenyl ether, polyoxyethylene (50) hydrogenated castor oil, polyoxyethylene (60) hydrogenated castor oil, polyoxyethylene (80) hydrogenated castor oil, and the like.
The cleansing cosmetic composition of the present invention can contain only one of these nonionic surfactants, or a combination of two or more thereof.

In the cleansing cosmetic of the present invention, it is important to contain 5.0 to 10.0% by mass of the nonionic surfactant in the total mass of the cleansing cosmetic, and more preferably 6.0 to 9.
0% by mass is desirable. This is because, within this content range, it exhibits an excellent cleansing action and gives a refreshing feel when washed with water.

HLB is an index indicating a hydrophilic-lipophilic balance, and in the present invention, a value calculated using the following equation by Oda, Teramura, etc. is used.
(Formula) HLB = (Σinorganic value / Σorganic value) × 10

The (C) polyhydric alcohol used in the present invention is not particularly limited, but specifically, for example, ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, isoprene glycol, dipropylene glycol, 1,3-butylene glycol, Examples include glycerin, diglycerin, polyglycerin, pentaerythritol, sorbitol, and trehalose.
Among these, polyethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, glycerin, and sorbitol are particularly preferable from the viewpoint of use feeling, and further, propylene glycol, dipropylene glycol, and 1,3-butylene glycol are detergency. Is more preferable.
The cleansing cosmetic composition of the present invention can contain only one of these nonionic surfactants, or a combination of two or more thereof.

  Moreover, it is important that the transparent cleansing cosmetic of the present invention contains the above-mentioned polyhydric alcohol in an amount of 20.0 to 40.0% by mass based on the total mass of the cleansing cosmetic, and more preferably 25.0 to 35. 0% by mass is desirable. This is because, within this range of content, it has an appropriate viscosity, has a good spread when applied to the skin, has an excellent makeup fit, and can exhibit a refreshing feel when washed with water.

It is important that the transparent cleansing cosmetic of the present invention has a viscosity at 30 ° C. of 50 to 1000 cps, more preferably 100 to 600 cps. In this range of viscosity, it spreads well when applied to the skin, has a refreshing feel when washed with water, and also has good usability and massage properties.
The viscosity according to the present invention is measured using a bismetholone viscometer (rotor No. 1, 12 rpm).

  In addition to the above essential components, other components that are usually used can be added as appropriate to the transparent cleansing cosmetic of the present invention. Other components include chelating agents such as edetate, water-soluble polymers such as methylcellulose and carboxyvinyl polymer, usability improvers such as cationized polymers, scrubbing agents such as polystyrene powder, UV absorbers, dyes and perfumes. And antiseptics such as parabens, antioxidants such as tocopherol and dibutylhydroxytoluene, drugs such as glycyrrhizin and various vitamins, and the like, which can be blended within a range not impairing the effects of the present invention.

In the cleansing transparent cosmetic of the present invention, it is preferable that the oil content is 1% by mass or less based on the total mass of the cleansing cosmetic in terms of imparting a refreshing feeling during washing with water and transparency.
Examples of the oil include liquid paraffin, squalane, liquid synthetic ester oil (isopropyl myristate, isopropyl palmitate, glycerin tri-2-ethylhexanoate, etc.), vegetable oil (olive oil, macadamia nut oil, safflower oil, etc.), silicon Although oil etc. can be mentioned, it is not limited to these.

The transparent cleansing cosmetic of the present invention can be produced according to a conventional method.
Further, the transparent cleansing cosmetic of the present invention can be applied to the face or lips,
Although it can be used in any form for rinsing or wiping, it is preferred to use after rinsing.

EXAMPLES Next, although an Example is given and this invention is demonstrated in detail, this invention is not limited to these. A compounding quantity is the mass%.
Prior to the examples, an evaluation method will be described.

<Viscosity> The viscosity at 30 ° C. was measured using a bismetholone viscometer (rotor No. 1, 12 rpm). If the measurement upper limit is exceeded, the rotor no. Measured using 2 and 3.

<Transparency> The transparency at 30 ° C. was measured using “ND-300A” (manufactured by Nippon Denshoku Co., Ltd.) with the transmittance (Y value) of purified water in a C light source and two visual fields as 100%.

<Evaluation method> Apply a commercially available oily foundation to the face of 20 female panelists, and after 30 minutes, use about 3 g of cleansing cosmetics of Examples and Comparative Examples for 1 minute with constant force and speed. Was massaged by hand and then washed away with water. Each item of the spread at the time of application | coating, cleansing power, the speed of a rinse, and the refreshing feeling after a rinse was evaluated in five steps, Furthermore, it determined by the following reference | standard from the average point.
5-point rating 5 points: Very good 4 points: Good 3 points: Normal 2 points: Slightly bad 1 point: Bad

Judgment ◎: Average point is 4.5 points or more ○: Average point is 3.5 points or more and less than 4.5 points Δ: Average point is 2.5 points or more and less than 3.5 points ×: Average point is 2. Less than 5

<Manufacturing Method> All components were heated, mixed, uniformly stirred and then cooled and prepared.

Examples 1-9
Cleansing cosmetics comprising the composition shown in Table 1 were prepared and evaluated.
The results are also shown in Table 1.

  As is clear from Table 1, the cleansing cosmetics of Examples 1 to 9 using the components of the present invention all exhibited excellent transparency and excellent performance.

Comparative Examples 1-9
Cleansing cosmetics comprising the composition shown in Table 2 were prepared and evaluated.
The results are also shown in Table 2.

  In Comparative Examples 1 to 9, any of the characteristics of transparency, spreading during application, cleansing force, rinsing speed, and refreshing feeling after rinsing were inferior, and the object of the present invention could not be achieved.

Claims (2)

A transparent cleansing cosmetic comprising the following components (A) to (C) and having a viscosity at 30 ° C. of 50 to 1000 cps.
(A) Nonionic surfactant having a HLB value of 6 or more and less than 12 in the form of liquid, paste or wax at normal temperature 5.0 to 15.0% by mass
(B) Nonionic surfactant that is liquid at normal temperature, pasty or waxy and has an HLB value of 12 or more and less than 18 5.0 to 10.0% by mass
(C) Polyhydric alcohol 20.0-40.0 mass% The transparent cleansing cosmetic according to claim 1, wherein the oil content is 1% by mass or less.