Oil-Based Cosmetic

Abstract

An oil-based cosmetic contains, as an oily base, an oil containing a phytosterol derivative, having a refractive index at 40 C. of 1.50 or more, and being liquid at 25 C. (A) and a liquid silicone oil that is incompatible with the oil (A) at 25 C. (B). In addition to the oily base material, a separation inhibitor to suppress separation of the oil of the component (A) and the silicone oil of the component (B) (C) is preferably contained, and a powder (D) and a solid oil and/or lipophilic gelling agent (E) may also be contained. A form of the of oil-based cosmetic can be appropriately selected according to an application, and can be a liquid, paste, solid, or the like.

Claims

1. An oil-based cosmetic comprising: an oil containing a phytosterol derivative which has a refractive index of 1.50 or more at 40 C. and is a liquid state at 25 C. (A); and a liquid silicone oil being incompatible with the oil (A) at 25 C. (B) as an oily base.

2. The oil-based cosmetic according to claim 1, further comprising a separation inhibitor (C) to suppress separation of the oil (A) and the silicone oil (B).

3. The oil-based cosmetic according to claim 1, further comprising a powder (D).

4. The oil-based cosmetic according to claim 1, further comprising a solid oil and/or a lipophilic gelling agent (E).

5. The oil-based cosmetic according to claim 1, wherein it is an oil-in-oil emulsion cosmetic.

6. The oil-based cosmetic according to claim 1, wherein it contains 5 to 70% by mass of the oil (A) and 5 to 70% by mass of the silicone oil (B), and further a ratio by mass of the component (A) to the component (B)[(A)/(B)] is 1/10 to 1/0.1.

7. The oil-based cosmetic according to claim 1, wherein a content of the separation inhibitor (C) is 0.1 to 40% by mass and is 0.2 to 80 parts by mass per 100 parts by mass of the total amount of the component (A) and the component (B).

8. The oil-based cosmetic according to claim 1, wherein the separation inhibitor (C) is one or more selected from the group consisting of: (C-1) Lipophilic surfactant having an HLB value of 6 or less; (C-2) Ester of polyhydric alcohol and condensed hydroxy fatty acid; (C-3) Dipentaerythritol ester of 12-hydroxystearic acid and/or dipentaerythritol ester of a mixed fatty acid of 12-hydroxystearic acid and a fatty acid having carbon atoms of 12 to 22; and (C-4) Aerosol silica and/or organically modified clay mineral.

Description

EXAMPLE

[0059] Hereinafter, the present invention will be further described with reference to Examples, but the present invention is not limited by these Examples. Test Example 1 described below illustrates the method for determining whether an oil corresponds to the oil of the component (B) used in the present invention or not, while Test Example 2 illustrates the method for determining whether a compound corresponds to the separation inhibitor of the component (C) which is an optional component or not. Parts and % in Examples, Comparative Examples and Test Examples represent parts by mass and % by mass relative to the total amount unless otherwise specified. Evaluation method for the oil-based cosmetics in the following Examples and Comparative Examples is as follows.

[0060] (Evaluation Item and Evaluation Method)

[0061] I Color Transfer Resistance:

[0062] Ten evaluators applied a sample to their lips, and 10 minutes later, they used a coffee cup. Color transfer resistance was evaluated based on a color strength of a lip mark formed on the cup.

[0063] II Color Retention:

[0064] Ten evaluators applied a sample to their lips and evaluated sensorily in 5 stages based on the following scoring standard (score).

[0065] III Gloss Immediately after Application:

[0066] Ten evaluators applied a sample to their lips and evaluated sensorily in 5 stages based on the following scoring standard (score).

[0067] IV Gloss Persistence:

[0068] Ten evaluators applied a sample to their lips and evaluated sensorily in 5 stages based on the following scoring standard (score).

[0069] V Moldability Upon Filling:

[0070] A solid sample was subjected to a breaking strength test to evaluate moldability upon filling. That is, a sample filled and molded in a stick container with a diameter of 10 mm was held horizontally on a specimen mount of a rheometer (FUDOH RHEOMETER manufactured by K.K. Rheotech) in an environment of 30 C., and a T-shaped plunger was applied to the position that is 10 mm apart from the tip of the middle plate of the stick, while the specimen mount was raised at a speed of 2 cm/min. A stress (gf) at which the stick broke was measured and taken as breaking strength. When the sample is solidified in a uniform state, the breaking strength value becomes high, and when the sample causes separation of the oil-in-oil emulsion before solidification, the breaking strength value becomes low. When the breaking strength value (gf) was 80 or more, moldability upon filling was determined as S; when the breaking strength value (gf) was 50 or more and less than 80, it was determined as A; when the breaking strength value (gf) was 30 or more and less than 50, it was determined as B; and when the breaking strength value (gf) was less than 30, it was determined as C.

[0071] VI Separation Stability (Stability Against Separation)

[0072] A liquid or semi-solid sample was placed in a glass bottle and stored in a constant temperature bath at 50 C. When separation was not observed for a period of 2 weeks or more, separation stability was determined as S, when separation was not observed for a period of 1 week or more and less than 2 weeks, it was determined as A, when separation was not observed for a period of 2 days or more and less than 1 week, it was determined as B, and when separation was observed within one day, it was determined as C.

[0073] (Score)

[0074] 5: Very good

[0075] 4: Good

[0076] 3: Ordinary

[0077] 2: Poor

[0078] 1: Very poor

[0079] (Evaluation Criteria)

[0080] S: Average value of scores by ten evaluators is 4.0 or more.

[0081] A: Average value of scores by ten evaluators is 3.5 or more and less than 4.0.

[0082] B: Average value of scores by ten evaluators is 2.5 or more and less than 3.5.

[0083] C: Average value of scores by ten evaluators is less than 2.5.

Test Example 1

[0084] (Compatibility Test)

[0085] Compatibility of Sample 1 described below that corresponds to the oil of the component (A) and each of liquid oils commonly used in conventional cosmetics (Samples 2-1 to 2-5 and 3-1 to 3-6 below) was evaluated according to the following test method and criteria. The results are shown in Table 1. As the oil to be evaluated, liquid oils commonly used in cosmetics were selected.

[0086] Test Method

[0087] After 10 g of the oil of the following Sample 1 and 10 g of the oil to be evaluated were placed in a transparent glass container having a volume of 30 mL (screw tube No. 6 manufactured by Maruemu Corporaion), the content of the container was heated to 90 C. Then the container was covered with a lid, subsequently was shaken vigorously up and down 20 times, and was allowed to stand in a room at 25 C. After 24 hours, a state of the content was visually observed at 25 C. to rank based on the following criteria. When a state of the content corresponds to the score of 1, both compounds are determined to be compatible, and when a state of the content corresponds to the score of 2 or 3, both compounds are determined to be incompatible.

[0088] Criteria

[0089] Score 1: The content has a single phase which is transparent and homogeneous.

[0090] Score 2: The content is cloudy entirely or has at least one of an upper layer and a lower layer which is transparent, and a cloudy intermediate layer.

[0091] Score 3: The content has an upper layer and a lower layer both of which are transparent and a clear boundary between the upper layer and the lower layer or contains clear droplets of visible size.

[0092] The samples provide to the test are as follows.

[0093] Sample 1 [Oil of the component (A)]:

[0094] A liquid oil at 25 C. having a steradiene content of 90% or more and a refractive index at 40 C. of 1.52 that is prepared according to the description of Example 2 in Japanese Patent No. 6,353,939 (Patentee: Yokozeki Oil & Fat Industries Co., Ltd) by subjecting a phytosterol obtained from soybean oil and rapeseed oil to a catalytic dehydration reaction in the presence of p-toluenesulfonic acid monohydrate to remove the hydroxyl group at 3-C of the phytosterol.

[0095] Sample 2-1: [0096] Dimethicone having a kinematic viscosity at 25 C. of 20 mm.sup.2/s (trade name: KF-96A-20cs, manufactured by Shin-Etsu Chemical Co. Ltd.)

[0097] Sample 2-2: [0098] Dimethicone having a kinematic viscosity at 25 C. of 100 mm.sup.2/s (trade name: KF-96A-100cs, manufactured by Shin-Etsu Chemical Co. Ltd.)

[0099] Sample 2-3: [0100] Dimethicone having a kinematic viscosity at 25 C. of 1,000 mm.sup.2/s (trade name: KF-96-1000cs, manufactured by Shin-Etsu Chemical Co. Ltd.)

[0101] Sample 2-4: [0102] Dimethicone having a kinematic viscosity at 25 C. of 3,000 mm.sup.2/s (trade name: KF-96-3000cs, manufactured by Shin-Etsu Chemical Co. Ltd.)

[0103] Sample 3-1: [0104] Dimethicone having a kinematic viscosity at 25 C. of 2 mm.sup.2/s (trade name; KF-96L-2cs, manufactured by Shin-Etsu Chemical Co. Ltd.)

[0105] Sample 3-2: [0106] Diphenylsiloxyphenyl trimethicone having a kinematic viscosity at 25 C. of 15 mm.sup.2/s (trade name: KF-56A, manufactured by Shin-Etsu Chemical Co. Ltd.)

[0107] Sample 3-3: [0108] Diphenyldimethicone having a kinematic viscosity at 25 C. of 400 mm.sup.2/s (trade name: KF-54, manufactured by Shin-Etsu Chemical Co. Ltd.)

[0109] Sample 3-4: [0110] Isononyl isononanoate that is an ester oil (trade name: SALACOS 99, manufactured by The Nissin OilliO Group Co., Ltd.)

[0111] Sample 3-5: [0112] Triethylhexoin that is an ester oil (trade name: T.I.O, manufactured by The Nissin OilliO Group Co., Ltd.)

[0113] Sample 3-6: [0114] Polyisobutene that is a hydrocarbon oil (trade name: PARLREAM24, manufactured by NOF Corporation)

[0115] The results of the compatibility test (compatibility with the oil of Sample 1) are shown in Table 1 below.

TABLE-US-00001 TABLE 1 Sample Scor on Copatibility 2-1 Dimethicone 20 mm.sup.2/s 3 (Incompatible) 2-2 Dimethicone 100 mm.sup.2/s 3 (Incompatible) 2-3 Dimethicone 1000 mm.sup.2/s 3 (Incompatible) 2-4 Dimethicone 3000 mm.sup.2/s 3 (Incompatible) 3-1 Dimethicone 2 mm.sup.2/s 1 (Compatible) 3-2 Diphenylsiloxyphenyl trimethicone 1 (Compatible) 3-3 Diphenyldimethicone 400 mm.sup.2/s 1 (Compatible) 3-4 Isononyl isononanoate 1 (Compatible) 3-5 Triethylhexoin 1 (Compatible) 3-6 Polyisobutene 1 (Compatible)

[0116] From the results shown in Table 1, it was confirmed that silicone oils have different compatibility with the oil of Sample 1 depending on their viscosity, and that a phenyl-modified silicone, an ester oil, and a hydrocarbon oil are compatible with the oil of Sample 1. Also, when a commercially available oil (trade name: TECHNOL SD with a refractive index of 1.52 that is manufactured by Yokozeki Oil & Fat Industries Co., Ltd. and has an INCI name of Phytosterols.) was used instead of Sample 1 as the oil of the component (A), similar results to those of the test using Sample 1 as the oil of the component (A) were obtained.

Test Example 2

[0117] <Test for Stabilization of Oil-In-Oil Emulsion (Separation Suppression Effect)>

[0118] A third component was added to a mixture of the oil of the component (A) and the silicone oil of the component (B) which are incompatible. Whether or not the third component has an effect of suppressing separation between the oil of the component (A) and the silicone oil of the component (B) was evaluated according to the following test method and criteria. The Results are shown in Table 2.

[0119] Test Method

[0120] After 10 g of the oil of the component (A) (Sample 1 described above) and 10 g of the silicone oil of the component (B) that is dimethicone having a kinetic viscosity at 25 C. of 1,000 mm.sup.2/s (trade name: KF-96-100, manufactured by Shin-Etsu Chemical Co. Ltd.) were placed in a transparent glass container having a volume of 30 mL (screw tube No. 6 manufactured by Maruemu Corporaion), 4 g of a compound to be evaluated (i.e., one of Samples 4-1 to 4-6 and 5-1 to 5-3 described below) was added to the mixture, and heated to 90 C. Then the container was covered with a lid, subsequently was shaken vigorously up and down 20 times, and was allowed to stand in a room at 25 C. After 3 hours and 24 hours, a state of the content was visually observed at 25 C.

[0121] Criteria

[0122] Uniformly cloudy.

[0123] 4: At least one of an upper layer and a lower layer is a transparent or translucent layer, and 80% by volume or more of the whole becomes cloudy.

[0124] 3: At least one of an upper layer and a lower layer is a transparent or translucent layer, and 40% by volume or more and less than 80% by volume of the whole becomes cloudy.

[0125] 2: At least one of an upper layer and a lower layer is a transparent or translucent layer, and 1% by volume or more and less than 40% by volume of the whole becomes cloudy.

[0126] 1: Both upper and lower layers are transparent and has a clear boundary in the middle, or transparent droplets of visible size are observed.

[0127] In the present invention, when a state of the content after 3 hours elapsed after standing corresponds to the score of 3 or more (i.e., 3, 4, or 5) in the above criteria, it is determined that the compound to be evaluated has a separation suppression function.

[0128] The samples provided to the test are as follows.

[0129] Sample 4-1: [0130] Sorbitan sesquiisostearate (trade name: SI-15R, manufactured by Nikko Chemical Co. Ltd.)

[0131] Sample 4-2: [0132] Polyglyceryl-2 diisostearate (trade name: COSMOL 42V, manufactured by The Nissin OilliO Group Co., Ltd.)

[0133] Sample 4-3: [0134] Polyglyceryl-5 polyricinoleate (trade name: SUNSOFT No. 818RC, manufactured by Taiyo Kagaku Co. Ltd.)

[0135] Sample 4-4: [0136] Dipentaerythrityl tripolyhydroxystearate (trade name: SALACOS WO-6, manufactured by The Nissin OilliO Group Co., Ltd.)

[0137] Sample 4-5: [0138] Dipentaerythrityl tetrahydroxystearate/tetraisostearate (trade name: COSMOL 168EV, manufactured by The Nissin OilliO Group Co., Ltd.)

[0139] Sample 4-6: [0140] Aerosol silica (trade name: AEROSIL 300, manufactured by Nippon Aerosil Co., Ltd)

[0141] Sample 5-1: [0142] Polyisobutene (trade name: PARLREAM24, manufactured by NOF Corporation)

[0143] ample 5-2 [0144] Neopentyl glycol dicaprate (trade name: ESTEMOL N-01, manufactured by The Nissin OilliO Group Co., Ltd.)

[0145] Sample 5-3: [0146] Diphenylsiloxy phenyl trimethicone (trade name: KF-56A, manufactured by Shin-Etsu Chemical Co. Ltd.)

[0147] The results of the test for stabilization of oil-in-oil emulsion (i.e., separation suppression effect by a third component) are shown in Table 2 below.

TABLE-US-00002 TABLE 2 Separation Suppression Effect Sample Compound Added After 3 hours After 24 hours None 1 1 4-1 Sorbitan sesquiisostearate 3 2 4-2 Polyglyceryl-2 diisostearate 3 2 4-3 Polyglyceryl-5 polyricinoleate 3 2 4-4 Dipentaerythrityl 3 2 tripolyhydroxystearate 4-5 Dipentaerythrityl 5 5 tetrahydroxystearate/tetraisostearate 4-6 Aerosol silica 5 4 5-1 Polyisobutene 2 1 5-2 Neopentyl glycol dicaprate 1 1 5-3 Diphenylsiloxy phenyl trimethicone 1 1

[0148] As shown in Table 2, when each of the compounds of (C-1) to (C-4) that are Samples 4-1 to 4-6 was added to a mixture of the oil being the component (A) and the silicone oil being the component (B) which are incompatible, separation of the component (A) and the component (B) was suppressed. That is, these compounds had a function of suppressing the separation of the oil of the component (A) and the silicone oil of the component (B). In contrast, when no third component was added (none), when polybutene which is a hydrocarbon oil (Sample 5-1) was added, when neopentyl glycol dicaprate which is known as a compatibility modifier between a polybutene and a silicone oil (see Japanese Patent No. 6,184,454) (Sample 5-2) was added, and when diphenylsiloxyphenyl trimethicone which is a kind of silicone oils (Sample 5-3) was added, no separation suppression effect was observed. Also, when a commercially available oil (TECHNOL SD manufactured by Yokozeki Oil & Fat Industries Co., Ltd.) instead of Sample 1 was used as the oil of the component (A), almost the same results as those in the case of Sample 1 were obtained.

Example 1 and Comparative Examples 1 to 2

[0149] (Lipstick)

[0150] A stick-shaped lipstick having the formulation shown in Table 3 was prepared according to the following production procedure, and evaluated for color transfer resistance, color retention, gloss, gloss persistence, and moldability upon filling according to the method described above. The results are shown in Table 3.

[0151] (Production Procedure)

[0152] (1) The ingredients 1 to 14 shown in Table 3 were heated to about 90 C. and uniformly mixed.

[0153] (2) The mixture prepared in the above (1) was filled at 80 C. into a stick-shaped container in a molten state and allowed to stand to obtain a solid lipstick.

TABLE-US-00003 TABLE 3 Comparative Comparative Component Example 1 Example 1 Example 2 1 A Oil of the Component (A) (1) 25.00 25.00 2 Polyisobutene (2) 25.00 B Dimethicone (1000 mm.sup.2/s) (3) 25.00 25.00 4 Diphenylsiloxy phenyl trimethicon (4) 25.00 5 E Synthetic wax (5) 3.00 3.00 3.00 6 E Ceresin 2.00 2.00 2.00 7 E Microcrystalline wax (6) 2.00 2.00 2.00 8 Isononyl isononanoate 18.00 18.00 18.00 9 C-2 Polyglyceryl-5 polyricinoleate (7) 10.00 10.00 10.00 10 C-3 Dipentaerythrityl tetrahydroxystearate (8) 10.00 10.00 10.00 11 D Red No. 202 1.00 1.00 1.00 12 D Aluminum lake of Yellow No.4 2.00 2.00 2.00 13 D Aluminum lake ofRed No. 104 1.00 1.00 1.00 14 C-4 Aerosol silica (9) 1.00 1.00 1.00 Evaluation Color transfer resistance S S C Color retention S A C Gloss S A B Gloss persistence A C C Moldability upon filling (breaking strength) S A S 1 Trade name TECHNOL SD (Yokozeki Oil & Fat Industries Co., Ltd.) 2 Trade name PARLREAM24 (NOF Corporation) 3 Trade name SH200 1000cs (Dow Toray Co., Ltd. ) 4 Trade name KF-56A(Sin-Etsu Cemical Co., Ltd.) 5 Trade name SASOLWAX TITANEL (SASOL Limited.) 6 Trade name MULTI WAX (Sonnenborn LLC) 7 Trade name SUNSOFT No. 818-R-C (Taiyo Kagaku Co. Ltd.) 8 Trade name COSMOL 168EV(The Nissin OilliO Group Co., Ltd.) 9 Trade name AEROSIL300 (Nippon Aerosil Co., Ltd.)}

[0154] As shown in Table 3, the lipstick of Example 1 containing the oil of the component (A) and the silicone oil of the component (B) that is incompatible therewith had excellent color transfer resistance, color retention, gloss, gloss persistence and moldability upon filling. In contrast, the lipstick of Comparative Example 1, in which the oil of the component (A) was replaced with polyisobutene described in Patent Document 1, was significantly inferior in gloss persistence. In addition, the lipstick of Comparative Example 2 using diphenylsiloxyphenyl trimethicone described in Patent Document 1 as a silicone oil was inferior in color transfer resistance, and inferior in color retention and gloss persistence.

Examples 2 to 7

[0155] (Lipstick)

[0156] A solid lipstick having the formulation shown in Table 4 was prepared according to the production procedure described above, and evaluated for color transfer resistance, color retention, gloss, gloss persistence and moldability upon filling according to the method described above. The results are shown in Table 4.

TABLE-US-00004 TABLE 4 Example Component Ingredient 2 3 4 5 6 7 1 A Oil of the Component (A)(1) 25.00 25.00 25.00 25.00 25.00 25.00 2 B Dimethicone(1000 mm.sup.2/s)(3) 25.00 25.00 25.00 25.00 25.00 25.00 3 E Synthetic wax(5) 3.00 3.00 3.00 3.00 3.00 3.00 4 E Ceresin 2.00 2.00 2.00 2.00 2.00 2.00 5 E Maicrocrystallin wax(6) 2.00 2.00 2.00 2.00 2.00 2.00 6 Isononyl isononanoate 18.00 18.00 18.00 18.00 19.00 39.00 7 C-2 Polyglyceryl-5 polyricinoleate(7) 20.00 10.00 8 C-3 Dipentaerythrityl tetrahydroxystearate(8) 20.00 10.00 9 C-2 Dipentaerythrityl tripolyhydroxystearate(10) 20.00 10 C-1 Sorbitan sesquiisostearate(11) 20.00 11 D Red No. 202 1.00 1.00 1.00 1.00 1.00 1.00 12 D Aluminum lake of Yellow No. 4 2.00 2.00 2.00 2.00 2.00 2.00 13 D Aluminum lake of Red No. 104 1.00 1.00 1.00 1.00 1.00 1.00 14 C-4 Aerosol silica(9) 1.00 1.00 1.00 1.00 Evaluation Color transfer resistance S S S S S S Color retention S S S S S S Gloss S S S S S S Gloss persistence A A A A A A Moldability upon filling (breaking strength) A A A B A C (10)Trade name SALACOS WO-6 (The Nissin OilliO Group Co,. Ltd.) (11)Trade name SI-15RV (Nikko Chemical Co., Ltd.)

[0157] As shown in Table 4, the lipsticks of Examples 2 to 7, which contain the oil of the component (A) and the silicone oil of the component (B) that is incompatible therewith, had excellent color transfer resistance, color retention, gloss, gloss persistence and moldability upon filling. In particular, the lipsticks of Examples 2 to 6 containing a compound corresponding to the components (C-1), (C-2) or (C-3) as the separation inhibitor were superior in the moldability upon filling to the lipstick of Example 7 containing no separation inhibitor. Comparing the lipstick of Example 1 shown in Table 3 and the lipsticks of Examples 2, 3 and 6, the lipstick of Example 1, which contains the components (C-2), (C-3) and (C-4) together as the component (C), was the best in moldability upon filling.

Example 8 and Comparative Example 3

[0158] (Lip Gloss)

[0159] A pasty lip gloss having the formulation shown in Table 5 was prepared according to the following production procedure, and evaluated for color transfer resistance, color retention, gloss, gloss persistence, and separation stability according to the method described above. The results are shown in Table 5.

[0160] (Production Procedure)

[0161] (1) The ingredients 1 to 13 shown in Table 5 were heated to about 90 C. and uniformly mixed.

[0162] (2) The mixture prepared in the above (1) was filled into a lip gloss container having a cap fitted with an applicator at 70 C. and allowed to stand to obtain a pasty lip gloss.

TABLE-US-00005 TABLE 5 Comparative Component Ingredient Example 8 Example 3 1 A Oil of the component (A) (1) 35.00 35.00 2 B Dimethicone (2000 mm.sup.2/s) (12) 20.00 3 Dimethicone(2 mm.sup.2/s) (14) 20.00 4 E Dextrin palmitate/ethylhexanoate (13) 5.00 5.00 5 Diisostearyl Malate 16.50 16.50 6 C-2 Polyglyceryl-5 polyricinoleate (7) 5.00 5.00 7 C-3 Dipentaerythrityl tetrahydroxystearate (8) 5.00 5.00 8 D Red No. 202 0.50 0.50 9 D Aluminum lake of Yellow No.4 0.30 0.30 10 D Aluminum lake of Blue No.1 0.20 0.20 11 D Borosilicate(Ca/Al) coated with TiO.sub.2 and SiO.sub.2) (14) 0.50 0.50 12 D Borosilicate(Ca/Al) coated with TiO.sub.2 (15) 0.50 0.50 13 C-4 Aerosol silica 1.00 1.00 Evaluation Color transfer resistance S C Color retention S B Gloss S A Gloss persistence A C Separation stability S S 12 Trade name SH200 2000cSt (Dow Toray Co., Ltd.) 13 Trade name RHEOPEARL TT2 (Chiba Flour Milling Co., Ltd.) 14 Trade name METASHINE MT1080RSS1 (Nippon Sheet Glass Company, Ltd.) 15 Trade name METASHINE MT1080RGS1 (Nippon Sheet Glass Company, Ltd.)

[0163] As shown in Table 5, the lip gloss of Example 8, which contain the oil of the component (A) and the silicone oil of the component, had excellent color transfer resistance, color retention, gloss, gloss persistence and separation stability. On the other hand, the lip gloss of Comparative Example 3, in which the component (B) was replaced with dimethicone having a kinematic viscosity of 2 mm.sup.2/s that is compatible with the component (A), had insufficient color transfer resistance and gloss persistence, and further color retention was not satisfactory.

Example 9

[0164] (Double Layer Liquid Lipstick)

[0165] A double layer liquid lipstick having the formulation shown in Table 6 was prepared according to the following production procedure, and evaluated for color transfer resistance, color retention, gloss, and gloss persistence according to the method described above. This liquid lipstick separated into two layers within several hours after standing. The upper layer was a layer mainly composed of the oil of the component (A), and the lower layer was an oil-in-oil emulsion layer composed of the oil of the component (A) and the silicone oil of the component (B). In the emulsion layer, separation of the oil of the component (A) and the silicone oil of the component (B) was suppressed by addition of aerosol silica of the component (C-4). The results are shown in Table 6. Incidentally the double layer liquid lipstick is used after homogenizing the content by shaking.

[0166] (Production Procedure)

[0167] (1) The ingredients 1 to 8 shown in Table 6 were heated to about and uniformly mixed.

[0168] (2) The mixture prepared in the above (1) was filled into a lip gloss container having a cap fitted with an applicator and allowed to stand to obtain a double layer liquid lipstick.

TABLE-US-00006 TABLE 6 Component Ingredient Example 8 1 A Oil of the component (A) (1) 35.00 2 B Dimethicone (100 mm.sup.2/s) (16) 20.00 3 Diisostearyl Malate 16.50 4 Isononyl isononanoate 25.00 5 D Red No. 202 2.00 6 D Aluminum lake of Yellow No.4 0.30 7 D Aluminum lake of Blue No.1 0.20 8 C-4 Aeroso silica 1.00 Evaluation Color transfer resistance S Color retention S Gloss S Gloss persistence A 16 Trade name SH200 100cSt (Dow Toray Co., Ltd.)

[0169] As shown in Table 6, the liquid lipstick of Example 9, which contains the oil of the component (A) and the silicone oil of the component that is incompatible therewith, had excellent color transfer resistance, color retention, gloss, and gloss persistence.

Example 10

[0170] (Lipstick Topcoat)

[0171] A pasty lipstick topcoat having the formulation shown in Table 7 was prepared according to the following production procedure and was applied on lips coated with commercially available lipstick (THREE DARINGLY DEMURE LIPSTICK 02, manufactured by K.K. ARCO). Color transfer resistance, color retention, gloss, gloss persistence, and separation stability were evaluated according to the method described above. The evaluation results are as shown in Table 7.

[0172] (Production Procedure)

[0173] (1) The ingredients 1 to 7 shown in Table 7 were heated to about and uniformly mixed.

[0174] (2) The mixture prepared in the above (1) was filled at 70 C. into a container having a cap fitted with an applicator and allowed to stand to obtain a pasty lipstick topcoat.

TABLE-US-00007 TABLE 7 Component Ingredient Example 10 1 A Oil of the component (A) (1) 35.00 2 B Dimethicone (2000 mm.sup.2/s) (12) 30.00 3 E Dextrin palmitate/ 5.00 ethylhexanoate (13) 4 Diisostearyl Malate 19.00 5 C-2 Polyglyceryl-5 5.00 polyricinoleate (7) 6 C-3 Dipentaerythrityl 5.00 tetrahydroxystearate (8) 7 C-4 Aerosol silica 1.00 Evalu- Color transfer resistance S ation Color retention S Gloss S Gloss persistence S Separation stability S

[0175] As shown in Table 7, when the lipstick topcoat of Example 10 containing the oil of the component (A) and the silicone oil of the component (B) that is incompatible therewith was applied on a makeup of a lipstick, the makeup exhibited excellent color transfer resistance, color retention, gloss, and gloss persistence. Further, the lipstick topcoat was excellent in separation stability.

INDUSTRIAL APPLICABILITY

[0176] According to the present invention, there is provided an oil-based cosmetic that is excellent in gloss and gloss persistence when applied to the skin or lips in addition to color transfer resistance and color retention.