JP5873330B2 - Two-layer cleansing cosmetic - Google Patents

Description

  The present invention relates to a two-layer cleansing cosmetic.

  Conventionally, cleansing cosmetics for removing sebum stains and makeup cosmetics on the skin include oily cleansing cosmetics mainly composed of liquid oils, creams and emulsions obtained by emulsifying oily components with a surfactant. Emulsified cleansing cosmetics in the form of an aqueous cleansing cosmetic composition mainly composed of an aqueous component or a water-soluble polymer have been used. However, these dosage forms do not have sufficient ability to remove makeup cosmetics that are difficult to break down and have good makeup, are inferior to the touch during and after use, and have excellent removal effects even with water. There were some problems such as being unable to wash out easily.

  Furthermore, cleansing cosmetics are demanded not only from the above-mentioned functional aspects and use feeling, but also from the aesthetic aspect that they are attractive in appearance. As such a cosmetically attractive dosage form, a two-layer cosmetic is drawing attention. The two-layer cosmetic is a cosmetic that is easily emulsified and mixed by shaking and stirring at the time of use, and easily re-separated if left standing. Such emulsified cosmetics are required to maintain a uniform emulsified state for a certain period of time and to be completely separated into two layers in the same state as before use.

  As an attempt on a two-layer cleansing cosmetic, a combined technique of an amphoteric surfactant and two or more nonionic surfactants (see Patent Document 1), an N-long chain acyl basic amino acid derivative and its acid A technique using an addition salt (see Patent Document 2) and a combined technique of two types of thickeners and a water-soluble salt (see Patent Document 3) have been proposed.

  However, in the above example, although it can be a two-layer type, when both the water layer and the oil layer are in a liquid state, the two-layer system is inferior to the problem that the two layers do not separate cleanly and the storage stability of the preparation. There was a problem that it was difficult to maintain. Then, the technique which mix | blends benzalkonium chloride is disclosed as the trial in the case of being a liquid layer (refer patent documents 4-6).

JP 2002-121130 A JP 2004-196713 A JP 2007-269694 A JP-A-6-21628 JP 2001-213724 A JP 2010-222321 A

However, these two-layer cleansing cosmetics are excellent in two-layer separation, removal effect and usability, but benzalkonium chloride is a cationic surfactant used for sterilization and disinfection, When blended in cosmetics, the upper limit of blending is regulated, and considering the irritation and safety to the skin, it is desirable that a small amount or no benzalkonium chloride is contained in the composition. Further, when benzalkonium chloride is blended, the pigment blended for coloring may cause aggregation.
Therefore, it consists of two layers, an aqueous layer and an oil layer. Easily emulsified by shaking, separated into two layers after an appropriate time that does not affect the use, excellent aesthetics, good makeup removal effect and feel to use Therefore, it is to provide a highly safe two-layer cleansing cosmetic.

  As a result of diligent research to solve the above-mentioned problems, the present inventor obtained an emulsified state easily by shaking by combining the tripolyhydroxy fatty acid dipentaerythrityl with the oily component and water, and after passing an appropriate time without affecting the use. It becomes a two-layer type cosmetic that separates into two layers, and such a two-layer cosmetic is excellent as a cleansing cosmetic and has an excellent removal effect on makeup cosmetics that are hard to fall off. It has been found that it has a good feeling of use and can also suppress skin irritation, and has completed the present invention.

  That is, the present invention provides a two-layer cleansing cosmetic containing (A) a tripolyhydroxy fatty acid dipentaerythrityl, (B) an oil component and (C) water.

  According to the present invention, the two-layer separation state is stably maintained without impairing the emulsification and mixing at the time of use, the appearance is excellent, the makeup cosmetic removal effect is excellent, the use feeling is good, and the safety is high. A type cleansing cosmetic can be provided.

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

  The (A) tripolyhydroxy fatty acid dipentaerythritol used in the present invention is a triester of polyhydroxy fatty acid and dipentaerythritol. The polyhydroxy fatty acid is a polymer of hydroxy fatty acid, and as the hydroxy fatty acid, a linear or straight chain having 12 to 22 carbon atoms such as hydroxylauric acid, hydroxymyristic acid, hydroxypalmitic acid, hydroxystearic acid, hydroxybehenic acid, etc. Examples include branched chain hydroxy fatty acids. Of these, those having 16 to 20 carbon atoms are preferable, and hydroxystearic acid having 18 carbon atoms is more preferable. The polymerization degree of the hydroxy fatty acid is preferably from 2 to 12, more preferably from 4 to 12, and even more preferably from 6 to 12 in terms of average polymerization degree. Specific examples of the component (A) include dipentaerythrityl tripolyhydroxylaurate, dipentaerythrity tripolyhydroxymyristic acid, dipentaerythrity tripolyhydroxypalmitate, dipentaerythrity tripolyhydroxystearate, dipentaerythrity trihydroxybehenate, and the like. Alternatively, two or more kinds can be used in combination. Of these, dipentaerythritol tripolyhydroxystearate, which is a triester of polyhydroxystearic acid and dipentaerythritol, is preferably used in the present invention. As a commercial item, Saracos WO-6 (made by Nisshin Oilio Group) is mentioned, for example.

  The content of (A) tripolyhydroxy fatty acid dipentaerythrityl in the two-layer cleansing cosmetic of the present invention is 0.001 to 10% by mass (hereinafter simply referred to as%) based on the total amount of the two-layer cleansing cosmetic. More preferably, it is 0.001 to 5% of range, More preferably, it is 0.005 to 3% of range, More preferably, it is 0.01 to 1% of range. Within these ranges, the uniformity during mixing is superior, the separation rate into two layers after shaking can be controlled more appropriately, and a more stable two-layer separation state can be maintained after separation. Become.

  The oil component (B) used in the present invention forms an oil layer in the two-layer cleansing cosmetic of the present invention. The oil component in the present invention is low in compatibility with water and refers to an oil component that is separated when mixed with water, and is not particularly limited. For example, ester oil, hydrocarbon oil, vegetable oil, silicone oil, higher fatty acid, ether oil And higher alcohols. Among these, in the present invention, it is preferable to use a volatile oil because it has an excellent effect of removing makeup cosmetics. The volatile oil is not particularly limited as long as it is a volatile oil that can be blended in cosmetics. For example, light liquid isoparaffin, isododecane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, dodecamethylcyclohexasiloxane, methyl Examples include trimethicone. Among these, light liquid isoparaffin, isododecane, and decamethylcyclopentasiloxane are particularly preferably used because they have a stickiness and irritation during use in addition to the effect of removing makeup cosmetics.

  The content of the (B) oil component in the two-layer cleansing cosmetic of the present invention is preferably in the range of 10 to 85%, more preferably in the range of 20 to 80%, based on the total amount of the two-layer cleansing cosmetic. More preferably, it is 30 to 70% of range. If it is in these ranges, it is excellent in the removal effect of makeup cosmetics, and a thing without stickiness and irritation at the time of use is obtained. Moreover, 30-100% is preferable from the point of the removal effect of makeup cosmetics, 40-100% is more preferable, and, as for the content rate of the volatile oil agent in (B) oil component, 50-100% is further more preferable.

  The water (C) used in the present invention forms a water layer in the two-layer cleansing cosmetic of the present invention. The content of (C) water in the two-layer cleansing cosmetic of the present invention is preferably in the range of 10 to 80%, more preferably 15 to 70%, based on the total amount of the two-layer cleansing cosmetic. More preferably, it is 15 to 60% of range. If it is in this range, a dry feeling after use can be suppressed and a good feeling of use with moisture can be obtained.

  In addition to the above essential components, the two-layer cleansing cosmetic of the present invention preferably contains (D) a water-soluble salt. Since the water-soluble salts contribute to stabilization of the interface between the oil layer and the water layer, the water-soluble salts effectively act to stably maintain the two-layer separated state in the two-layer cleansing cosmetic of the present invention. A water-soluble salt is an ionic compound generated by a neutralization reaction between an acid and a base, and dissolves in water to dissociate into ions. Inorganic salts and organic salts can be used. Examples of inorganic salts include salts of inorganic acids such as hydrochloric acid, sulfuric acid, carbonic acid and phosphoric acid with alkali metals, ammonium and the like. Specifically, chlorides such as sodium chloride, potassium chloride and magnesium chloride, sodium sulfate and sulfuric acid. Examples thereof include sulfates such as potassium, magnesium sulfate and aluminum sulfate, and carbonates such as sodium carbonate and sodium hydrogen carbonate. Examples of organic salts include salts of organic acids such as lactic acid, succinic acid, citric acid, tartaric acid and malic acid with alkali metals and ammonium. In the present invention, one or more of these various salts can be used, but it is preferable to use inorganic salts, and the use of chlorides such as sodium chloride, potassium chloride, and magnesium chloride makes the two-layer interface cloudy. It is preferable because a difficult product is obtained.

The content of the (D) water-soluble salt in the two-layer cleansing cosmetic of the present invention is based on the total amount of the two-layer cleansing cosmetic from the viewpoint of stabilization of the two-layer interface,
The range of 0.001-5% is preferable, More preferably, it is 0.005-1%, More preferably, it is the range of 0.01-0.5%.

  In conventional two-layer cleansing cosmetics formulated with benzalkonium chloride, water-soluble pigments formulated for coloring sometimes aggregate as an emulsion at the interface between the oil layer and the water layer, which may impair the appearance. However, since such a phenomenon does not occur in the two-layer cleansing cosmetic of the present invention, (E) a water-soluble pigment is blended as a coloring component to obtain a two-layer cleansing cosmetic having a more beautiful appearance. Is possible. Here, the water-soluble pigment refers to a pigment that is more soluble in the water layer than the oil layer, and is not particularly limited as long as it is a pigment that can be generally used in cosmetics. In the present invention, a water-soluble tar dye is preferably used as the water-soluble dye. Specific examples of water-soluble tar-based pigments include Red No. 2, Red No. 3, Red No. 102, Red No. 105 (1), Red No. 105 (2), Red No. 106, Red No. 213, and Red No. 214. No., Red No. 227, Red No. 230 (1), Red No. 230 (2), Red No. 231, Red No. 232, Red No. 401, Red No. 502, Red No. 503, Red No. 504, Yellow No. 4, Yellow No. 5, Yellow No. 202 (1), Yellow No. 202 (2), Yellow No. 203, Yellow No. 205, Yellow No. 402, Yellow No. 403 (1), Yellow No. 406, Yellow No. 407, Orange 205, orange 207, orange 402, green 3, green 201, green 204, green 205, green 401, green 402, blue 1, blue 2, blue 202, blue 203, Blue 205, Brown 01, purple 401, black 401, etc., especially red 106, red 227, red 401, red 504, blue 1, green 3, green 201, purple 401 are stable. It is preferably used because it is more excellent in safety and safety.

  The content of the (E) water-soluble pigment in the two-layer cleansing cosmetic of the present invention is preferably in the range of 0.000005 to 0.1%, more preferably 0, based on the total amount of the two-layer cleansing cosmetic. It is 0.0001 to 0.05%, more preferably 0.00005 to 0.01%.

  In addition to the above-mentioned various components, other commonly used components can be appropriately added to the two-layer cleansing cosmetic of the present invention. For example, chelating agents such as edetate, moisturizers, whitening agents, blood circulation promoters, anti-inflammatory agents, bactericides, UV absorbers, touch improvers, coloring agents, antiseptics, antioxidants, fragrances, animal and plant extracts And the like can be blended within a range not impairing the effects of the present invention.

  The two-layer cleansing cosmetic of the present invention becomes a uniform emulsified state by shaking without containing a surfactant of which safety is a concern, and then a stable two-layer separated state is formed by standing still. . Therefore, it is preferable that the two-layer cleansing cosmetic of the present invention does not substantially contain a surfactant.

  The two-layer cleansing cosmetic of the present invention is obtained by appropriately mixing predetermined components according to a conventional method, and can be produced by uniformly mixing and dispersing all components regardless of the mixing order.

  The two-layer cleansing cosmetic of the present invention is useful for general removal of cosmetics, but especially eye makeup cosmetics such as mascara, eyeliner, eyeshadow, and eyebrow, lipstick, etc., mainly containing oily components. Excellent removal effect in lip cosmetics. It can also be used suitably for removing base makeup cosmetics such as foundations and sunscreens.

  The two-layer cleansing cosmetic of the present invention can be of any shape and material as long as it is a container suitable for filling cosmetics. It is preferable to use a colorless or colored transparent or translucent container because it takes advantage of its excellent appearance.

  (A) Tripolyhydroxy fatty acid dipentaerythrityl, (B) Oil component, and (C) The embodiment of the two-layer cleansing cosmetic of the present invention, wherein the present invention is the following two-layer type <1> to <11> A cleansing cosmetic is preferred.

<1> The two-layer cleansing cosmetic as described above, wherein the component (A) is a triester of polyhydroxy C ₁₂ -C ₂₂ fatty acid and dipentaerythritol, preferably dipentaerythritol tripolyhydroxystearate.
<2> (B) component is at least one selected from light liquid isoparaffin, isododecane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, dodecamethylcyclohexasiloxane and methyltrimethicone, preferably light liquid isoparaffin The two-layer cleansing cosmetic according to the above <1>, which is at least one selected from the group consisting of isododecane and decamethylcyclopentasiloxane.
<3> The two-layer cleansing cosmetic according to <1> or <2>, further comprising (D) a water-soluble salt such as an inorganic salt, preferably a chloride such as sodium chloride, potassium chloride, magnesium chloride.
<4> Further, (E) as a water-soluble dye, a water-soluble tar dye, preferably red 106, red 227, red 401, red 504, blue 1, green 3, green 201 and purple 401 The two-layer cleansing cosmetic according to any one of <1> to <3>, which contains one or more selected from No ..
<5> The content of the component (A) is 0.001 to 10%, preferably 0.001 to 5%, more preferably 0.005 to 3%, based on the total amount of the two-layer cleansing cosmetic. The two-layer cleansing cosmetic according to any one of <1> to <4>, more preferably in the range of 0.01 to 1%.
<6> The content of the component (B) is in the range of 10 to 85%, preferably 20 to 80%, more preferably 30 to 70%, based on the total amount of the two-layer cleansing cosmetic. 1>-<5> two-layer cleansing cosmetic.
<7> Any of the above <1> to <6>, wherein the content of the volatile oil in the component (B) is 30 to 100%, preferably 40 to 100%, more preferably 50 to 100%. Two-layer cleansing cosmetic.
<8> The content of the component (C) is in the range of 10 to 80%, preferably 15 to 70%, more preferably 15 to 60%, based on the total amount of the two-layer cleansing cosmetic, <1>-<7> Any two-layer cleansing cosmetic.
<9> The content of the component (D) is 0.001 to 5%, preferably 0.005 to 1%, more preferably 0.01 to 0.5, based on the total amount of the two-layer cleansing cosmetic. % Of the two-layer cleansing cosmetic according to any one of <3> to <8>.
<10> The content of the component (E) is 0.000005 to 0.1%, preferably 0.00001 to 0.05%, more preferably 0.00005, based on the total amount of the two-layer cleansing cosmetic. <0.01>, which is in a range of 0.01%, and is filled in a two-layer cleansing cosmetic <11> colorless or colored transparent or translucent container of any of the above <4> to <9><10> Any two-layer cleansing cosmetic.

  EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited by this. In addition, all the compounding quantities in an Example are the mass%.

  A two-layer cleansing cosmetic comprising the composition shown in Table 1 was prepared by a conventional method and filled in a glass transparent container, and various evaluations were performed by the following methods.

<Evaluation items>
(A) Separation speed into two layers after shaking (B) Two-layer separability (C) Removal effect of cosmetics (D) No stickiness when used (E) No irritation when used (F) Moist feeling after use

<Evaluation method>
For the evaluation item (A), the time until the sample was shaken up and down 10 times and then separated into two layers was evaluated based on the following criteria (1). For the evaluation item (B), the sample was shaken up and down 10 times, and the state of the interface between the oil layer and the water layer after 1 hour was visually observed and evaluated based on the following criterion (2). Regarding evaluation items (C) to (F), after using a normal makeup fee for 20 female panelists, take 2 g of the sample on cotton and remove the makeup fee. The following criteria (3) Based on this, each evaluation item was evaluated. The evaluation results are also shown in Table 1. In addition, the result of evaluation item (C)-(F) was shown by the average score calculated from the score of all the panelists.

・ Criteria (1)
◎: 5 minutes or more and less than 30 minutes ○: 3 minutes or more and less than 5 minutes △: 1 minute or more and less than 3 minutes ×: 1 minute or less, or not separated for 30 minutes or more
◎: The interface between the two layers is clearly separated ○: The interface is slightly blurred but the separation is clearly seen △: A small amount of emulsion is observed at the interface ×: The layer is separated into three layers (upper layer) : Oil layer, middle layer: emulsion, lower layer: water layer) or mixed ・ Criteria (3)
5: Very good 4: Good 3: Normal 2: Slightly bad 1: Bad

As is clear from Table 1, the two-layer cleansing cosmetics of Examples 1 to 13 using the components of the present invention showed excellent performance in separation rate into two layers after shaking and separation properties in two layers. It was. In addition to being excellent in cleansing effect, it showed excellent performance in terms of no stickiness during use, no irritation, and a moisturizing effect after use. In the table, 1E-04 indicates 10 ⁻⁴ .

  On the other hand, in Comparative Examples 1 to 4 where the component (A) is missing or a conventional surfactant is blended, any item of the evaluation test or separation rate into two layers after shaking, two-layer separability In other words, the object of the present invention could not be achieved. Example 3 was an example in which a water-soluble pigment was blended with Example 2, but the appearance was felt and the aesthetics were excellent. On the other hand, in Comparative Example 3 in which a water-soluble pigment was also blended, a blue emulsion derived from Blue No. 1 blended as a water-soluble pigment was formed at the interface between the oil layer and the water layer. It was inferior.

  Hereinafter, other prescription examples of the two-layer cleansing cosmetic of the present invention will be given as examples.

Example 14 (point makeup remover)
(Blending ingredients) (Blending amount)
Dipentaerythrityl tripolyhydroxystearate 0.5
(Saracos WO-6; manufactured by Nisshin Oillio Group)
Light liquid isoparaffin 30.0
Tris (trimethylmethoxy) methylsilane 10.0
Isononyl isononanoate 10.0
Olive oil 0.1
Sunflower oil 0.1
Almond oil 0.1
Orange oil 0.1
Dipropylene glycol 2.5
Sodium chloride 0.15
Monopotassium phosphate 0.1
Edetate disodium 0.05
Whey extract 0.1
(Whey CPA; made by Ichimaru Falcos)
Soymilk fermentation broth 0.1
(Fermented soymilk; manufactured by Sansho Pharmaceutical Co., Ltd.)
Licorice extract 0.1
(Licorice extract; manufactured by Maruzen Pharmaceutical Co., Ltd.)
Carrot juice 0.1
(Homo fruit carrot / N; made by Esperis)
Shikuwasha peel extract 0.1
(Sequencer Extract BG; manufactured by NOF Corporation)
Assembly extract 0.1
(Assembly extract-S; manufactured by Maruzen Pharmaceutical Co., Ltd.)
Blue No. 1 0.0001
Phenoxyethanol 0.3
Purified water balance

Example 15 (cleansing lotion)
(Blending ingredients) (Blending amount)
Dipentaerythrityl tripolyhydroxystearate 1.0
(Saracos WO-6; manufactured by Nisshin Oillio Group)
Decamethylcyclopentasiloxane 25.0
Liquid paraffin 10.0
Neopentyl glycol diisononanoate 10.0
Squalane 5.0
1,3-butylene glycol 10.0
Sodium chloride 0.15
Monopotassium phosphate 0.1
Edetate disodium 0.05
Perilla extract 0.1
(Perilla extract SQ; manufactured by Maruzen Pharmaceutical Co., Ltd.)
Silk extract 0.1
(Silk protein extract; manufactured by Ichimaru Falcos)
Laminaria blue squid extract 0.1
(LAMINAINE-BG; manufactured by Biotech Marine)
L-ascorbic acid sulfate disodium salt 0.01
Glycine 0.0001
L-proline 0.0001
L-alanine 0.0001
Red No. 401 0.00006
Phenoxyethanol 0.3
Purified water balance

  The two-layer cleansing cosmetics of Examples 14 and 15 were prepared according to a conventional method. Example 14 was filled in a glass transparent container, and Example 15 was filled in a glass translucent container. Also for the two-layer cleansing cosmetics of Examples 14 and 15, the separation speed into two layers after shaking, the two-layer separation property, the effect of removing the cosmetics, no stickiness during use, no irritation, use In the later moisture effect, it had excellent characteristics and was also excellent in aesthetics.

  According to the present invention, it consists of two layers, an aqueous layer and an oil layer, which is easily emulsified by shaking, separated into two layers after an appropriate time that does not affect the use, excellent aesthetics, makeup removal effect and feel of use It is possible to provide a two-layer cleansing cosmetic composition that is excellent in safety and high in safety.

Claims (8)

(A) Polyhydroxy C ₁₂ -C ₂₂ fatty acid and dipentaerythritol triester , (B) oil component and (C) water, and the content of component (A) is 0.001 to 5% by mass. Two-layer cleansing cosmetic. The two-layer cleansing cosmetic according to claim 1 , which contains substantially no surfactant . Triesters of polyhydroxy C ₁₂ -C ₂₂ fatty acid and dipentaerythritol is a dipentaerythrityl Tripoli hydroxystearic acid, claim 1 double layer cleansing cosmetic according.   The two-layer cleansing cosmetic according to any one of claims 1 to 3, wherein the component (B) contains a volatile oil.   The two-layer cleansing cosmetic according to claim 4, wherein the volatile oil is at least one selected from light liquid isoparaffin, isododecane and decamethylcyclopentasiloxane.   (B) The two-layer cleansing cosmetic according to claim 4 or 5, wherein the content of the volatile oil in the component is 30 to 100% by mass.   The two-layer cleansing cosmetic according to any one of claims 1 to 6, further comprising (D) a water-soluble salt.   The two-layer cleansing cosmetic according to any one of claims 1 to 7, further comprising (E) a water-soluble pigment.