JP3532910B2 - Cleansing cosmetics - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleansing cosmetic composition, and more particularly to a cleansing cosmetic composition which exhibits a transparent and beautiful liquid and does not cause cloudiness even when used on water-wet skin.

[0002]

2. Description of the Related Art Conventionally, oil-based cleansing cosmetics for makeup removal, which are used after being rinsed off with water or used by wiping, include those in the form of cream, emulsion, gel or solution. It is manufactured by emulsifying or solubilizing an oil component and water with a nonionic surfactant. For example, Patent Document 1 can be cited.

However, when the conventional oily cleansing cosmetic composition is applied to the skin wet with water, it becomes an emulsion or suspension and becomes cloudy as compared with the drug substance, resulting in poor appearance.
Since the cleansing power for oily cosmetics is remarkably lowered and the feeling of use may be deteriorated, it is not suitable for use in a bathroom in particular.

Many studies have been conducted to obtain a stable solubilized state. For example, in Patent Documents 2 and 3, polyhydric alcohols are added, higher fatty acids or higher alcohols are combined, and the like. However, no cleansing cosmetics containing oil as a main component, which is supposed to be used on wet skin, have been provided yet.

[0005]

[Patent Document 1] Japanese Patent Laid-Open No. 3-161428

[Patent Document 2] Japanese Patent Laid-Open No. 4-5213

[Patent Document 3] Japanese Patent Application Laid-Open No. 11-35421

[0006]

An object of the present invention is to provide a water-resistant cleansing cosmetic composition which exhibits a transparent liquid state and does not cause deterioration of cleansing power and deterioration of appearance and usability even when water is mixed. To provide.

[0007]

Means for Solving the Problems If the present inventors could design an oily transparent liquid composition that does not become cloudy or significantly thicken due to emulsification or suspension even if a significant amount of water is mixed in, a bathroom can be designed. It is possible to provide a cleansing cosmetic that can be used in an environment where hands and face are wet such as a washbasin and a wash basin, and does not cause deterioration of cleansing power and deterioration of appearance and usability, and such a composition has a specific It has been found that this can be achieved by combining a surfactant and an oil agent.

The present invention comprises the following components (A) to (C): And a composition containing 10% by weight or less of water, and a transparent liquid cleansing cosmetic which does not become cloudy when 50 parts by weight of water is added to 100 parts by weight of the composition.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Component (A) used in the present invention is oleic acid monoglyceride, linoleic acid monoglyceride,
It is selected from isostearic acid monoglyceride and isostearyl pentaerythryl glyceryl ether. Two or more of these may be used, and the total composition contains 1 to 15% by weight, particularly 3 to 8% by weight.
It is preferable because sufficient water resistance is obtained and the feeling of use is good.

The nonionic surfactant of component (B) is IO
B is 1.1 or more, preferably 1.1 to 2.0.

Here, the IOB is an organic conceptual diagram (Akira Fujita, Prediction of Organic Compounds and Organic Conceptual Diagram, Area of Chemistry Vol.1)
1, No. 10 (1957) 719-725), which represents the ratio of the inorganic value and the organic value (Inorganic Organic Balance) and is calculated by the following formula.

[0012]

[Equation 1]

Such nonionic surfactants having an IOB of 1.1 or more include, for example, polyoxyethylene monofatty acid ester, fatty acid polyoxyethylene glyceryl (ester of glycerin and fatty acid having polyoxyethylene chain added), mono It can be selected from fatty acid polyoxyethylene glycerin (structure in which polyoxyethylene chain is added to monofatty acid glycerin), alkyl glucoside, polyoxyethylene sorbitan fatty acid ester and the like. In particular,
Polyoxyethylene monofatty acid ester, fatty acid polyoxyethylene glyceryl, monofatty acid polyoxyethylene glycerin, and alkyl glucoside are preferable because they can form a composition having low viscosity and excellent water resistance. More specifically, polyoxyethylene monolaurate (IO
B = 1.34), monococonut oil fatty acid polyoxyethylene glycerin (IOB = 1.22), alkyl chain C9 to 1
Alkyl glucoside (IOB = 1) with a degree of sugar condensation of 1 to 2
1.84) is preferable because it exerts good detergency against colored products such as lipstick even in the presence of water (when massaging on wet skin or accompanied by washing).

Two or more kinds of the component (B) can be used, and the total composition is 5 to 30% by weight, particularly 10 to 21% by weight.
It is preferable to contain it because sufficient water resistance can be obtained and the washability is good.

The component (C), which is an oily component, may be a transparent liquid oil usually used in cosmetics, for example, hydrocarbon oils such as liquid paraffin, polyisobutene and squalane; alkyl-1,3-dimethylbutyl ether. Such as isopropyl palmitate, isopropyl myristate, cetyl 2-ethylhexanoate, tridecyl isononanoate, etc. monoester oils; tri (2-ethylhexanoic acid) glycerin, tri (caprylic acid / capric acid) glycerin, etc. Triester oils; vegetable oils such as olive oil, jojoba oil and macadamia nut oil; silicone oils such as decamethylcyclopentasiloxane and methylphenylpolysiloxane can be used.

Of these, decamethylcyclopentasiloxane and a carbon number of 20 to 30 and an inorganic value of 7
Oils of 5 or less are effective and preferred for solubilizing water and are preferred. Here, the inorganicity value is the value described in the above description of IOB. 20 to 30 carbon atoms and an inorganic value of 7
As the oil of 5 or less, for example, liquid paraffin having an average carbon number of 20 to 30 (for example, High Coal K23 manufactured by Kaneda Co., Ltd.
0; inorganic value 0, average carbon number 24, etc., isotridecyl isononanoate (inorganic value 60, carbon number 22), cetyl 2-ethylhexanoate (inorganic value 60, carbon number 24), isopropyl palmitate (inorganic Sex value 60, carbon number 1
9), cetyl-1,3-dimethylbutyl ether (inorganic value 20, carbon number 22) and the like.

Two or more kinds of oily components can be used,
It is preferable to contain 50% by weight or more, especially 70 to 85% by weight in the total composition, because the detergency of the oily makeup is excellent. Among them, decamethylcyclopentasiloxane, which contains 20 to 30 carbon atoms and has an inorganic value of 75 or less in the total composition, is preferably contained in an amount of 40 to 85% by weight.

The cleansing cosmetic composition of the present invention further comprises
As the component (D), a higher alcohol having a IOB of 0.6 or less, preferably 0.28 to 0.56, a glycerin derivative or a higher fatty acid can be contained.

The higher alcohol having an IOB of 0.6 or less is one having a carbon number of 18 or less, such as myristyl alcohol (IOB = 0.36), isostearyl alcohol (IOB = 0.29), and oleyl alcohol. (IOB = 0.28) and the like. As a glycerin derivative, diglyceryl diisostearate (IO
B = 0.41), diglyceryl dioleate (IOB =
0.42), isostearyl monoglyceryl ether (IOB = 0.53) and the like. Examples of higher fatty acids include isostearic acid (IOB = 0.56).

As the component (D), two or more kinds may be used, and two or more kinds selected from higher alcohols, glycerin derivatives and higher fatty acids may be used in combination. It is preferable that the component (D) be contained in the entire composition in an amount of 0.5 to 10% by weight, particularly 2.1 to 5% by weight because the feel during rinsing is excellent.

The cleansing cosmetic composition of the present invention may further contain water in an amount of 10% by weight or less, preferably 2 to 5% by weight. When it exceeds 10% by weight, the detergency for oily makeup is deteriorated, which is not preferable.

In addition to the above-mentioned components, the cleansing cosmetic composition of the present invention contains a large amount of 1,3-butylene glycol, propylene glycol, etc. in order to adjust the cloud point of the nonionic surfactant and improve the feeling of use. Polyhydric alcohol; Ultrafine silica particles for adjusting viscosity, thickeners such as dextrin palmitate and organic bentonite; Organic acids such as citric acid and phosphoric acid, inorganic acids; Inorganic salts, anionic surfactants, cationic surfactants Agents, amphoteric surfactants, polymers, germicides, UV absorbers, antioxidants, chelating agents,
It may contain fragrances, pigments, extracts, medicinal agents and the like.

The cleansing cosmetic composition of the present invention is produced by heating each compounding ingredient as necessary and mixing them uniformly.

The cleansing cosmetic composition of the present invention does not become cloudy when 50 parts by weight of water is added to 100 parts by weight of the composition. Here, the white turbidity is caused by emulsification or suspension, and the wavelength is 530 nm at 28 to 30 ° C. with a turbidimeter (digital colorimeter mini photo 5; 10 mmΦ glass cell; manufactured by Sanshin Kogyo Co., Ltd.). The transmittance measured with purified water as a reference was measured for titanium oxide (titanium oxide JA-C, particle size of about 0.1 to 0.5 μm:
Compared with the transmittance of a 0.02 wt% suspension aqueous solution (made by Teika Co., Ltd.), those lower than the transmittance of a 0.02 wt% titanium oxide suspension aqueous solution are made cloudy.

The cleansing cosmetic composition of the present invention is a transparent liquid. Transparent means a wavelength of 530 with a turbidimeter
The transmittance measured with purified water as a reference in nm is higher than the transmittance of 0.001% by weight titanium oxide suspension aqueous solution (when a dye, powder, etc. are included, those are not included). If it is transparent as measured by, it is considered to be included in the scope of the present invention). In addition, liquid is 25
The viscosity at 1000C is 1000 mPa · s (B-type viscometer, rotor 2, 30 rpm) or less. The viscosity of the composition at 25 ° C. is preferably 300 mPa · s or less, and particularly preferably 100 mPa · s or less. When 50 parts by weight of water is added to 100 parts by weight of the composition and mixed, the temperature is 25 ° C.
It is preferable that the viscosity at is always 2000 mPa · s or less, and particularly preferably 1000 mPa · s or less.

[0026]

Examples Examples 1 to 11 and Comparative Examples 1 to 6 When cleansing cosmetics having the compositions shown in Tables 1 and 2 were produced, and the appearance, properties, makeup remover, and water of the obtained cleansing cosmetics were mixed. The transparency, makeup removal, and wash-off property were evaluated, and a comprehensive evaluation was performed. The results are also shown in Tables 1 and 2.

(Production Method) <Examples 1 to 11> After heating the components (A), (B) and (D) to the component (C) to completely dissolve it, other components are added and uniformly mixed. Then, a cleansing cosmetic was obtained. <Comparative Examples 1 to 6> The components (A), (B), (D) and other surfactants are heated to the component (C) to be completely dissolved, and then the other components are added and uniformly added. By mixing, a cleansing cosmetic was obtained.

(Evaluation Method) (1) Appearance: At 25 ° C. and 40 ° C., a turbidimeter (digital colorimeter mini photo5; 10 mmΦ glass cell; manufactured by Sanshin Kogyo Co., Ltd.) at a wavelength of 530 nm was used as a reference. The transmittance was measured, and those having a transmittance higher than that of the 0.001 wt% titanium oxide suspension aqueous solution were regarded as “transparent” and lower than the transmittance of the 0.001 wt% titanium oxide suspension aqueous solution and 0.02% by weight. Those having a transmittance higher than that of the titanium suspension aqueous solution were defined as “translucent”.

(2) Properties: The viscosity measured at 25 ° C. with a B-type viscometer (rotor 2, 30 rpm) is 1000 m.
Those below Pa · s were defined as “liquid”.

(3) Makeup Remover; Oily Makeup Remover; Mascara (Dial Mascara, manufactured by Maybelline Co., Ltd.) was thinly applied to the forearm with a diameter of about 1.5 cm, left to dry for 3 hours, and then each cleansing cosmetic ( Or, mixed with 50 parts by weight of water), about 25 mg was put on and lightly massaged 30 times with fingers. Then, it was washed off with running water, and the remaining condition of the mascara was visually observed and judged according to the following criteria. Lipstick makeup remover: Lipstick (Aub Rouge Livelish RS415, manufactured by Kao Corporation) is thinly applied to the forearm with a diameter of about 1.5 cm, left to dry for 3 hours, and then each cleansing cosmetic (or 50 parts by weight of water) Mixed) about 25 mg
It was put on and lightly massaged 30 times with fingers. Then, it was rinsed with running water, and the remaining condition of the lipstick was visually observed and judged according to the following criteria. ◎: Good makeup removal and quick release. ○: Good makeup removal. ○ △: The makeup is slightly removed. Δ: The makeup was slightly removed. X: Poor makeup removal.

(4) Transmittance when mixed with water: A turbidimeter (digital colorimeter mini p for a sample prepared by mixing 10 parts by weight or 50 parts by weight of water with each cleansing cosmetic composition).
photo 5; 10 mm Φ glass cell; manufactured by Sanshin Kogyo Co., Ltd.)
At a wavelength of 530 nm, the transmittance was measured with reference to purified water, and the transmittance was compared with the transmittance of an aqueous suspension of titanium oxide (titanium oxide JA-C, particle size of about 0.1 to 0.5 μm: manufactured by Teika). And evaluated according to the following criteria. A: higher than the transmittance of 0.001% by weight titanium oxide suspension aqueous solution. B: Lower than the transmittance of 0.001% by weight titanium oxide suspension aqueous solution, and higher than the transmittance of 0.008% by weight titanium oxide suspension aqueous solution. C: Lower than the transmittance of 0.008% by weight titanium oxide suspension aqueous solution, and higher than the transmittance of 0.02% by weight titanium oxide suspension aqueous solution. D: Lower than the transmittance of 0.02 wt% titanium oxide suspension aqueous solution. In addition, the cleansing cosmetic composition of the present invention preferably has a temperature range in which it does not become cloudy even when water is mixed, within a range of 25 to 35 ° C., which corresponds to the environment on the palm or face, and the measurement is performed for each cleansing cosmetic composition. 100 parts by weight of purified water 10
The mixture was mixed with 50 parts by weight or 50 parts by weight, and the temperature was adjusted to 28 to 30 ° C., followed by uniform mixing.

(5) Rinseability: About 2 g of each cleansing cosmetic composition was applied to the forearm and rinsed off with warm water, and the ease of washing off was evaluated according to the following criteria. ⊚: The slimy feeling disappears quickly and it is easy to wash off. ○: Easy to wash off. Δ: Difficult to wash off. X: Oil remains on the skin forever and cannot be washed off.

(6) Comprehensive evaluation: 10 professional evaluation panelists evaluated each cleansing cosmetic composition. First, lipstick and oily mascara were applied to the face and left for about 3 hours to dry. Next, in a hand that has been thoroughly wet and then lightly drained, take about 2 g of each cleansing cosmetic,
While looking at the mirror, I stretched it over my entire face, applied it with makeup, and rinsed it off with warm water. At this time, a comprehensive evaluation of the appearance, makeup removal, and washability was performed based on the following criteria. ⊚: Eight or more of 10 answered that they were good. ○: 6 to 7 out of 10 answered that it was good. Δ: 4 to 5 people out of 10 answered that it was good. X: Less than 3 out of 10 people answered that it was good.

[0034]

[Table 1]

[0035]

[Table 2]

[0036]

EFFECTS OF THE INVENTION The cleansing cosmetic composition of the present invention exhibits a transparent and beautiful liquid state by combining specific ingredients, and even if water is mixed in, it maintains a solubilized state and becomes cloudy. The cleansing power does not decrease and the feeling of use is good. Therefore, it can be used for skin wet with water, and is particularly suitable for use in the bathroom.

Continuation of front page (56) References JP-A-4-5213 (JP, A) JP-A-11-35421 (JP, A) JP-A-6-219923 (JP, A) JP-A-2000-191438 (JP, A) JP 7-89824 (JP, A) JP 2000-302643 (JP, A) JP 2002-104927 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61K 7/00-7/50

Claims (4)

(57) [Claims] 1. The following components (A) to (C): And a transparent liquid cleansing cosmetic composition containing 10% by weight or less of water, which does not become cloudy when 50 parts by weight of water is added to 100 parts by weight of the composition. 2. The cleansing cosmetic composition according to claim 1, which further comprises a higher alcohol, a glycerin derivative or a higher fatty acid having a component (D): (D) IOB of 0.6 or less. 3. The cleansing cosmetic composition according to claim 1, wherein the nonionic surfactant as the component (B) is polyoxyethylene monolaurate or polyoxyethylene coconut oil fatty acid glycerin. 4. The cleansing cosmetic composition according to claim 2, which contains the component (D) in an amount of 0.5 to 10% by weight.