JP2019127476A - Liquid oily skin cleansing composition - Google Patents

Abstract

To provide a liquid oily skin cleansing composition having a high cleansing effect, no dripping, a mild feeling and an excellent refreshing feeling after washing off and having good temporal stability.SOLUTION: There is provided a liquid oily skin cleansing composition which contains the following components (a) to (e): (a) a dimer acid diester, (b) 10 to 35 mas% of a fatty acid polyoxyethylene sorbit having an HLB in a range of 8 to 12 and/or a fatty acid polyoxyethylene glyceryl, (c) 10 to 30 mass% of hydrocarbon oil which is liquid at 25°C, (d) volatile silicone oil and (e) diisostearyl malate, where a content mass ratio (a)/(b) of the component (a) to the component (e) is 0.1 to 1.SELECTED DRAWING: None

Description

  The present invention relates to a liquid oily skin cleansing composition, and more particularly, a diester of dimer acid, fatty acid polyoxyethylene sorbit with HLB in the range of 8 to 12 and / or fatty acid polyoxyethylene glyceryl, at 25 ° C. The present invention relates to a liquid oily skin cleansing composition containing liquid hydrocarbon oil, volatile silicone oil, and diisostearyl malate.

  Since sebum on the skin and makeup cosmetics contain a lipophilic substance, in order to remove them, a composition containing an oil as a main component is used. The functions required for these compositions include not only cleansing effects but also excellent in feeling of drooping at the time of use, mellow feeling, refreshing feeling of washing away, and stability over time. So far, studies to combine different HLB surfactants (Patent Document 1), studies to combine a carbonic diester with a dimer acid and / or a diester of a dimer diol (Patent Document 2), in order to improve the cleansing effect, The examination (patent document 3) which mixes the ester of a dimer acid to an oil-in-water type emulsified cosmetic is reported.

JP 2004-168724 A JP 2007-119401 A JP, 2006-23181, A

With respect to Patent Document 1, there were also cases where there was no dripping, lack of round feeling, and poor usability, and in addition, there were cases where the makeup familiarity was insufficient and the cleansing effect was poor.
In Patent Document 2, the dimer acid and / or the diester of the dimer diol are not stably dissolved in the composition and separation occurs, or the refreshing feeling of the rinse is poor and the usability is poor. There was a case.
Regarding Patent Document 3, the makeup familiarity is insufficient and the cleansing effect may be poor.
From such a background, there has been a demand for a composition that is excellent in cleansing effect, no sagging, a mellow feel, and a fresh feeling of washing, and has good stability over time.

  Therefore, the present inventors are liquid oil containing 10 to 35% by mass of fatty acid polyoxyethylene sorbite having a HLB in the range of 8 to 12 and / or fatty acid polyoxyethylene glyceryl and 10 to 30% by mass of hydrocarbon oil. The composition of the present invention was examined to further incorporate the diester of the dimer acid, and although the cleansing effect, the mellow feeling and the refreshing feeling of the wash-out were improved to some extent, the effect is still insufficient and the dripping However, there were still cases where the stability over time was poor. In particular, regarding the stability over time, an event was observed in which the liquid oily skin cleansing composition became cloudy over time and separation occurred.

  Furthermore, as a result of intensive investigations by the present inventors, it was found that the diester of dimer acid, fatty acid polyoxyethylene sorbit having HLB in the range of 8 to 12 and / or 10 to 35% by mass of fatty acid polyoxyethylene glyceryl, hydrocarbon oil It has been found that the liquid oil-based composition containing 10 to 30% by mass further improves the temporal stability significantly by blending a volatile silicone oil. Furthermore, in combination, diisostearyl malate is blended, and in particular, the content ratio by mass of the diester of dimer acid and diisostearyl malate (diester of dimer acid) / (diisostearyl malate) is 0.1 to 1. Occasionally, the viscosity of the liquid oil-based skin cleansing composition rises unexpectedly, and the absence of dripping is improved, and the cleansing effect, mellow feel, refreshing feeling of washing away, and stability over time become good. As a result, the present invention has been completed.

That is, the present invention
The following components (a) to (e);
(A) Diester of dimer acid (b) Fatty acid polyoxyethylene sorbit having HLB in the range of 8 to 12 and / or 10 to 35% by mass of fatty acid polyoxyethylene glyceryl
(C) 10-30% by mass of hydrocarbon oil that is liquid at 25 ° C.
(D) volatile silicone oil (e) containing diisostearyl malate,
It is an object of the present invention to provide a liquid oily skin cleansing composition characterized in that the content mass ratio (a) / (e) of the component (a) to the component (e) is 0.1 to 1.

The component (a) is a dimer of unsaturated fatty acid having 11 to 22 carbon atoms, and a saturated or unsaturated linear or branched monohydric alcohol having 12 to 34 carbon atoms or a ring-containing or cyclic group It is intended to provide a liquid oily skin cleansing composition which is a diester with a sterol.

It is intended to provide a liquid oily skin cleansing composition having a content of component (a) of 0.1 to 10% by mass.

It is an object of the present invention to provide a liquid oily skin cleansing composition in which the mass ratio (a) / (d) of component (a) to component (d) is 0.25 to 1.25.

The liquid oil-based skin cleansing composition of the present invention is characterized by being excellent in cleansing effect, non-sagging, mellow feeling, refreshing feeling of rinse-off, and good temporal stability.

  Hereinafter, the present invention will be described in detail. In addition, in this specification, "-" shall mean the range including the numerical value before and behind that.

Component (a): Dimer Acid Diester The dimer acid diester of component (a) used in the present invention is a dibasic acid diester obtained by polymerization of two molecules of unsaturated fatty acid. As a preferable thing of a dimer acid, the dimer of the unsaturated fatty acid with 11-22 carbon atoms produced industrially can be mentioned. Among them, for example, dimer linoleic acid, dimer linolenic acid, dimer oleic acid, or hydrogenated products thereof are not particularly limited thereto. Preferred examples of the alcohol constituting the ester portion of the ester of the dimer acid include saturated or unsaturated linear or branched monohydric alcohols having 12 to 34 carbon atoms and ring-containing or cyclic sterols. be able to. Although there is no particular limitation, examples thereof include, but not limited to, usual higher alcohols such as oleyl alcohol, stearyl alcohol, behenyl alcohol, lauryl alcohol, linoleyl alcohol and the like. Many dimer acid esters are commercially available as raw materials for cosmetics. Preferred is dimer linoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl) (trade name: PLANDOOL-S, as shown by the display name according to “Ingredient Display Name List of Cosmetics” issued by the Japan Cosmetic Industry Association. Nippon Seika Co., Ltd.), dimer dilinoleic acid di (isostearyl / phytosteryl) (trade name: LUSPLAN PI-DA, manufactured by Nippon Seika Co., Ltd.), dimer dilinoleic acid dimer dilinoleyl (trade name: LUSPLAN DD-DA7) , Manufactured by Nippon Seika Co., Ltd.). In the cosmetic of the present invention, such dimer acid ester may contain only one species, or two or more species may be combined and contained. Among them, in particular, dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / stearyl /, preferably in combination with diisostearyl malate in that it has good roundness and no dripping. Behenyl), dimer linoleic acid di (isostearyl / phytosteryl), dimer linoleic acid dimer linoleyl, and more preferably dimer linoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl).

  The content of the component (a) in the present invention is not particularly limited, but particularly the combination with the component (e) diisostearyl malate to be described later is that it has good roundness and no dripping. Preferably 0.1 to 10% by mass (hereinafter, “mass%” is simply indicated as “%”), more preferably 1 to 8%, based on the total amount of the liquid oily skin cleansing composition. Especially preferably, it is 3 to 8%.

Component (b): fatty acid polyoxyethylene sorbite having a HLB in the range of 8 to 12 and / or fatty acid polyoxyethylene glyceryl The component (b) used in the present invention is a fatty acid polyoxy acid having a HLB in the range of 8 to 12 Ethylene sorbit and / or fatty acid polyoxyethylene glyceryl.

Here, HLB (Hydphile-Lipophile Balance) in the present invention is an index showing the hydrophilic-lipophilic balance, and is calculated by the following equation by Oda and Teramura et al.
HLB = (Σinorganic value / Σorganic) × 10
Here, 無機 inorganic value / Σ organic property is called IOB (Inorganic-Organic balance), and the surface activity is based on “inorganic value” and “organic value” set for each of various atoms and functional groups. It can be calculated by accumulating the “inorganic value” and “organic value” of atoms and functional groups constituting organic compounds such as agents (Yoshio Koda, “Organic Conceptual Diagram-Fundamentals and Applications”, 11-17 pages, Sankyo Publishing, published in 1984).

Examples of the fatty acid used for the fatty acid polyoxyethylene sorbite and / or the fatty acid polyoxyethylene glyceryl include those having 12 to 22 carbon atoms, which may be linear or branched, but the cleansing The carbon number is preferably 14 to 20, more preferably 16 to 20 in terms of the effect and the refreshing feeling of washing.

Examples of fatty acid polyoxyethylene sorbite and / or fatty acid polyoxyethylene glyceryl are given below, but the invention is not particularly limited thereto. Examples of the fatty acid polyoxyethylene sorbitol include pentaoleic acid polyoxyethylene sorbitol (40E.O.) (HLB = 9) and tetraoleic acid polyoxyethylene sorbit (40E.O.) (HLB = 10). . As fatty acid polyoxyethylene glyceryl, polyoxyethylene glyceryl isostearate (8E.O.) (HLB = 10), polyoxyethylene glyceryl isostearate (6E.O.) (HLB = 8), polyoxyethylene glyceryl diisostearate (20E.O.) (HLB = 10) and polyisoethylene glyceryl triisostearate (30E.O.) (HLB = 10). When the fatty acid polyoxyethylene sorbitol or fatty acid polyoxyethylene glyceryl contains only HLB less than 8, the refreshing feeling after washing may be poor. On the other hand, when only HLB contains more than 12, stability over time may not fully be securable. The HLB of fatty acid polyoxyethylene sorbitol and / or fatty acid polyoxyethylene glyceryl is preferably 9-12, more preferably 9-11, in terms of cleansing effect and refreshing feeling.

  The content of the component (b) in the present invention is 10 to 35% with respect to the total amount of the liquid oily skin cleansing composition. If the content of the component (b) is less than 10%, the cleansing effect may be low, and the refreshing feel after washing may not be excellent. On the other hand, when the content of the component (b) exceeds 35%, the turbidity of the system increases and the temporal stability may be poor. The content of the component (b) relative to the total amount of the liquid oily skin cleansing composition is that the content of the component (b) is superior in terms of the level of the cleansing effect and the refreshing feel after washing away and the stability over time. Preferably it is 13 to 30%, more preferably 15 to 25%.

Component (c): Hydrocarbon oil that is liquid at 25 ° C. The hydrocarbon oil that is liquid at 25 ° C. of the component (c) used in the present invention is not particularly limited as long as it is usually used in cosmetics. Can also be used. Component (c) may be of any origin such as animal oil, vegetable oil, synthetic oil, etc. Liquid paraffin, heavy liquid isoparaffin (hydrogenated polyisobutene), light liquid isoparaffin, dodecane, isododecane, tetradecane, isotetradecane, hexadecane, isohexadecane, Examples include squalane, synthetic squalane, vegetable squalane, polyisobutylene, and polybutene. The average molecular weight of the component (c) is preferably 20 to 1000, more preferably 30 to 400, from the viewpoint of being excellent in mellow feel and good in temporal stability.

Moreover, the liquid state of the hydrocarbon oil which is liquid at 25 ° C. means that the viscosity is 20000 mPa · s or less. Here, the viscosity can be measured with a B-type viscometer at 25 ° C. using rotor No. 2 or 3. The viscosity of the component (c) is preferably 10 to 10000 mPa · s, more preferably 20 to 1000 mPa · s, and still more preferably 20 to 10000 mPa · s in that the absence of dripping is good and the stability over time is good. 400 mPa · s. When the component (c) is not contained, the stability over time may be poor.

Moreover, content of the component (c) in this invention is 10 to 30% with respect to the liquid oily skin cleansing composition whole quantity. When the content of the component (c) is less than 10%, the stability over time may be poor. Moreover, when content of a component (c) exceeds 30%, the refreshing feeling of a rinse may not be excellent. The content of the component (c) is preferably 15 to 25%, more preferably 18% of the total amount of the liquid oil-based skin cleansing composition, from the viewpoint of excellent washing feeling and stability over time. ~ 23%.

Component (d): Volatile silicone oil Component (d) used in the present invention is a volatile silicone oil. Volatility means that the boiling point at 1 atm is 260 ° C. or less. Silicone oil having a boiling point of 260 ° C. or less under 1 atm is not particularly limited, but chain polysiloxanes (methyltrimethicone, tetrakistrimethylsiloxysilane, dimethylpolysiloxane (viscosity at 25 ° C. of 2 mPa · s or less), Methylphenyl polysiloxane, etc.), cyclic polysiloxanes (octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetramethyltetrahydrogencyclotetrasiloxane, etc.), caprylyl methicone, etc. . Among these, methyltrimethicone, dimethylpolysiloxane (viscosity at 25 ° C. is 2 mPa · s or less), octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane are preferable. When the component (d) is not contained, the temporal stability may be poor.

  The content of the component (d) in the present invention is not particularly limited, but the cleansing effect is high, the refreshing feeling of washing away is excellent, and the stability over time is good. On the other hand, it is preferably 8 to 15%, more preferably 9 to 12%.

Component (e): Diisostearyl Malate Component (e) used in the present invention is a diester of malic acid and isostearyl alcohol. Isostearyl alcohol is not particularly limited, and examples thereof include 5,7,7-trimethyl-2- (1,3,3-trimethylbutyl) -octanol. Although not particularly limited, examples of commercially available diisostearyl malate include Cosmol 222 (manufactured by Nisshin Oillio Group), Esterol DISM (manufactured by National Mimatsu), Himalate DIS (manufactured by Higher Alcohol Industry), etc. There is.
The content of the component (e) in the present invention is not particularly limited, but it is a liquid oil-based skin cleansing composition in that the cleansing effect is high, the absence of dripping is good, and the temporal stability is good. Preferably it is 10-18% with respect to the whole quantity, More preferably, it is 11-16%.

  The content mass ratio (a) / (e) of the component (a) and the component (e) in the present invention is 0.1 to 1. Although it is known that the viscosity at 25 ° C. of component (e) can be 6000 mPa · s or less, it is more surprising than the viscosity of the raw material itself is expected to have a specific content ratio with component (a) By combining, the viscosity of the liquid oil-based skin cleansing composition increased, and a mellow feeling was obtained, and no dripping was good. When the content mass ratio (a) / (e) is less than 0.1, the absence of drooping may be poor, and when the content mass ratio (a) / (e) exceeds 1, There are cases where the absence of dripping is poor, and sometimes it is not good for the refreshing feeling of the rinse. The content mass ratio (a) / (e) is preferably 0.2 to 0.9, and more preferably 0.4 to 0.7, from the viewpoint that the sagging is excellent.

  The content ratio by mass (a) / (b) of the component (a) and the component (b) in the present invention is not particularly limited, but preferably 0. 2 in view of no dripping and favorable round feeling. It is 2-0.7, More preferably, it is 0.3-0.6.

  Although the content mass ratio (a) / (c) of the component (a) and the component (c) in the present invention is not particularly limited, it is preferably 0.2 because the mellow feeling and the refreshing feeling of washing away become good. It is -0.8, More preferably, it is 0.3-0.7.

  The content mass ratio (a) / (d) of the component (a) and the component (d) in the present invention is not particularly limited, but preferably 0. 1 because the cleansing effect becomes high and the stability over time becomes good. 25 to 1.25, more preferably 0.4 to 1.2, and still more preferably 0.6 to 0.9.

  In the liquid oil-based skin cleansing composition of the present invention, in addition to the above components, components normally used in cosmetics, for example, surface activity other than the component (b), as long as the effects of the present invention are not impaired. Agents, lower alcohols, oils other than components (a), (c), (d) and (e), water, moisturizers, thickeners, sequestering agents, fresheners, antioxidants, preservatives / antiseptics, A pH adjuster, a colorant, various fragrances, and the like can be appropriately contained depending on the purpose.

Oils other than components (a), (c), (d), and (e) are not particularly limited, but include higher alcohols, hydrocarbon oils that are not liquid at 25 ° C., ester oils, fats, and non-volatile silicones. Oily components can be used. For example, lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, behenyl alcohol, hexadecyl alcohol, oleyl alcohol, isostearyl alcohol, hexyldodecanol, octyldodecanol, cetostearyl alcohol, 2-decyltetradecinol, cholesterol, phytosterol Higher alcohols such as sitosterol, lanosterol, monostearyl glycerine ether (batch alcohol), paraffin wax, liquid paraffin, pristane, polyisobutylene, microcrystalline wax, petrolatum and other hydrocarbons not liquid at 25 ° C., diisobutyl adipate, 2-hexyldecyl adipate, di-2-heptylundecyl adipate, monoisostearate N-alkyl glycolate, isocetyl isostearate, trimethylolpropane triisostearate, ethylene glycol di-2-ethylhexanoate, cetyl 2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, tetra-2- Pentaerythritol ethylhexanoate, cetyl octanoate, octyldodecyl gum ester, oleyl oleate, octyldodecyl oleate, decyl oleate, neopentyl glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, isocetyl stearate, stearic acid Butyl, diisopropyl sebacate, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate, isopropyl palmitate, 2-ethylhexyl palmitate, pal 2-hexyldecyl stannate, 2-heptylundecyl palmitate, cholesteryl 12-hydroxystearate, dipentaerythritol fatty acid ester, isopropyl myristate, octyldodecyl myristate, 2-hexyldecyl myristate, myristyl myristate, dimethyloctane Ester oils such as hexyl decyl acid, ethyl laurate and hexyl laurate, beeswax, carnauba wax, candelilla wax, waxes such as spermaceti, palm oil, palm kernel oil, olive oil, safflower oil, soybean oil, cottonseed oil, etc. Vegetable oils and fats represented by: beef fat, beef fat, beef bone fat, hardened beef fat, hydrogenated oil, turtle oil, pork fat, horse fat, mink oil, liver oil, animal oil such as egg yolk oil, lanolin, liquid lanolin, reduced lanolin Lanolin alcohol, hard lanolin, acetate Lanolin, lanolin derivatives such as lanolin fatty acid isopropyl, highly polymerized dimethylpolysiloxane, methylphenylpolysiloxane, polyether-modified polysiloxane, polyoxyalkylene / alkylmethylpolysiloxane / methylpolysiloxane copolymer, alkoxy-modified polysiloxane, alkyl Non-volatile silicones such as modified polysiloxane, cross-linked organopolysiloxane, fluorine-modified polysiloxane, amino-modified polysiloxane, glycerin-modified polysiloxane, higher alkoxy-modified silicone, higher fatty acid-modified silicone, silicone resin, silicone rubber, silicone resin Can be mentioned.

  The method for producing the liquid oily skin cleansing composition of the present invention is not particularly limited, and is prepared by a conventional method. That is, it can be prepared by adding components (a) to (e) and optionally optional components and mixing them.

The liquid oil-based skin cleansing composition of the present invention has good stability over time and is excellent in esthetics, and preferably has a transmittance of 80% or more, more preferably 90% or more. The transmittance can be measured by the method used in the evaluation method 2 shown below.

The liquid state of the liquid oily skin cleaning composition of the present invention indicates that the viscosity at 25 ° C. is 20000 mPa · s or less. Here, the viscosity can be measured with a B-type viscometer at 25 ° C. using rotor No. 2 or 3. The viscosity at 25 ° C. is preferably 300 to 15,000 mPa · s, more preferably 500 to 12,000 mPa · s, in that the cleansing effect is high and the absence of dripping is good.

  The oiliness of the liquid oil-based skin cleansing composition of the present invention means that the oil-based base portion is a one-liquid phase without separation or the like, and as the formulation, solubilization of water-in-oil type And a water-in-oil type microemulsion. Moreover, what mixed the powder, the granule etc. which granulated this with such an oil-type base may be sufficient. The present invention may contain a small amount of water. The specific content of such water is not particularly limited, but is preferably less than 5% and preferably less than 1% with respect to the total amount of the liquid oily skin cleansing composition. More preferably, it is more preferable in it being less than 0.5%. In addition, when there are many aqueous components, there are some which become a two-layer separated type cosmetic and some which become a water-in-oil type emulsified cosmetic, but these are not included in the present invention.

  Further, the liquid oily skin cleansing composition of the present invention can be suitably used for applications such as facial cleansers and cleansing materials. In addition, the product of the present invention can be used by a method such as wiping off or washing away after sufficiently matching the stains and cosmetics on the skin. Furthermore, since the present invention is characterized by a refreshing feeling of washing, it is preferably used for washing.

  EXAMPLES The present invention will be described in more detail by way of examples, but the present invention is not limited thereto.

  The liquid oil-based skin cleansing compositions of the formulations shown in Examples 1-11 and Comparative Examples 1-11 are prepared, and their cleansing effects, no dripping, mellow feel, refreshing feeling of washing away, and stability over time are described below. The method was evaluated. The results are also shown in Table 1.

(Production method)
According to each formulation shown in Table 1, components 2, 3 and component 1 are uniformly dissolved by heating and mixing at 70 ° C., and after cooling to 30 ° C., components 4 to 14 are mixed and stirred to be uniform, The container was filled into a liquid oily skin cleansing composition.

(Evaluation method 1)
B. Cleansing effect b. There is no dripping. Mild feel. Refreshing feeling of washing away
[About Lee, Ro, Ha, Ni (Sensory evaluation)]
20 panelists apply 3g of the following oil foundation (solid form) on their cheeks and then cleanse each sample using the cleansing effect, no dripping, mellow feel and refreshing feel of each panel. A person evaluated each sample according to the following absolute evaluation criteria in 7 grades and assigned a score, and for each sample, the average value was calculated from the total score of all the panels, and judged according to the following 4 criteria.

(Absolute evaluation criteria)
(Score): (Evaluation)
6: Very good 5: Good 4: Somewhat good 3: Normal 2: Somewhat bad 1: Bad 0: Very bad (judgment criteria)
(Judgment): (Average score)
:: more than 4.5 points: very good ○: less than 3 points 4.5 points or less: good Δ: less than 1.5 points 3 points or less: somewhat defective ×: 1.5 points or less: defective

The composition and manufacturing method of the oily foundation (solid form) used for the sensory evaluation of Evaluation Method 1 are shown below.
(Composition of oily foundation (solid))
(Ingredient) (%)
(1) Candelilla wax 10
(2) Glyceryl tri-2-ethylhexanoate 20
(3) Dimethylpolysiloxane 5
(4) squalane 5
(5) Di-2-ethylhexanoic acid neopentyl glycol Residual amount (6) Tripropylene glycol 1
(7) Mica 10
(8) Serisite 10
(9) Talc 5
(10) Bengala 0.5
(11) Yellow iron oxide 1
(12) Black iron oxide 0.5
(13) Oxybenzone 0.1
(14) Glycerin 0.5
(15) Phenoxyethanol 0.2

(Manufacturing method of oily foundation (solid))
A: Components (1) to (6) are heated and dissolved at 100 ° C. and mixed B: Components (7) to (15) are added to A and dispersed uniformly while being cooled by a roll mill.
C: B is filled into a resin dish at 90 ° C.

(Evaluation method 2)
E. About stability over time Each sample was put in a transparent glass container, sealed, and stored in a constant temperature bath (5 ° C.) for 1 month, and then to evaluate the nonuniformity of the composition (the degree of stability failure over time) The transmittance was measured. As a measuring instrument, a spectrophotometer (measurement wavelength: 700 nm, double beam spectrophotometer U-2900 manufactured by Hitachi High-Tech Science Co., Ltd.) Disposer (material: PMMA, product number: 2-5719-01 (standard type), ASONE stock The measurement temperature was 25 ° C. The transmittance of the measurement result was evaluated in four stages, given a score, the average value was calculated for each sample, and judged according to the following three-stage criteria.
Absolute Evaluation Criteria (Score): (Evaluation)
4 points: the transmittance is 90% or more 3 points: the transmittance is 80% or more and less than 90% 2 points: the transmittance is 70% or more and less than 80% 1 point: the transmittance is less than 70% 4-step criteria (Judgment): (Average score)
○: 3 points or more: Good △: 2 points or more and less than 3 points: Slightly poor ×: Less than 2 points: Bad
In addition, about the sample by which determination is x, when it preserve | saved for 6 months or more in a thermostat (5 degreeC), isolation | separation and oil float were recognized.

As apparent from the results in Table 1, the liquid oil-based skin cleansing compositions of Examples 1 to 11 have a cleansing effect, no dripping, a mellow feel, and a refreshing rinse as compared with Comparative Examples 1 to 11. It was excellent in feeling and stability over time.
In Comparative Example 1 containing the fatty acid polyoxyethylene glyceryl that does not satisfy the HLB of the component (b), the refreshing feeling of washing away and the temporal stability were poor. The comparative example 2 in which the content of the component (b) is less than 10% was poor in the cleansing effect, the refreshing feeling of washing away, and the temporal stability. In Comparative Example 3 in which the content of the component (b) exceeds 35%, there was no dripping and poor temporal stability.
Comparative Example 4 which does not contain the component (c) but instead contains a hydrocarbon oil solid at 25 ° C. is poor in cleansing effect, no dripping off, mellow feeling, refreshing feeling of washing away, stability over time Met. Comparative Example 5 in which the content of the component (c) was less than 10% was poor in the mellow feel, the refreshing feeling of the rinse-off, and the temporal stability. In Comparative Example 6 in which the content of the component (c) exceeds 30%, the refreshing feeling of washing away and the temporal stability were poor.
The comparative example 7 which does not contain a component (d) but instead contains a silicone oil which is not volatile was inferior in the cleansing effect and aging stability.
Comparative Example 8, which does not contain the component (e) and contains a polar oil having a viscosity value close to 25 ° C. instead, has poor dripping, mellow feel, and stability over time, and Comparative Example 9 is , Cleansing effect, no dripping, stability over time was poor.
In Comparative Example 10 in which the content mass ratio (a) / (e) is less than 0.1, the cleansing effect, the absence of dripping, the mellow feel, and the refreshing feeling of washing off were poor. The comparative example 11 in which the contained mass ratio (a) / (e) exceeds 1 was poor in cleansing effect, no dripping, gentle feeling, refreshing feeling of washing away, and stability over time.

Example 12: Cleansing oil (component) (%)
1. Ethyl hexanoate cetyl remaining amount Liquid paraffin (Note 7) 28
3. Dilinoleic acid di (phytosteryl / isostearyl / cetyl / stearyl / behenyl) 7.5
4. Isopropyl myristate 4
5. Botanical squalane 2
6. Jojoba oil 1
7). Decamethylcyclopentasiloxane 10
8. Tetraoleic acid polyoxyethylene sorbit (Note 3) 9
9. Polyoxyethylene glyceryl isostearate (Note 4) 7.5
10. Ethanol 3.5
11. Stearyl glycyrrhetinate 0.1
12. L-menthol 0.01
13. Fragrance 0.01
14. Diisostearyl malate 9

(Production method)
Ingredients 3 and 4 are uniformly dissolved by heating and mixing at 70 ° C., cooled to 30 ° C., then ingredients 1, 2, and 5-14 are mixed and agitated to make uniform, and filled into a cleansing oil. I got
Example 12: The cleansing oil had good cleansing effect, no dripping, mellow feel, fresh feeling of washing, and stability over time.

Example 13: Face wash (component) (%)
1. 1. Remaining amount of glyceryl triethylhexanoate Squalane 20
3. Dilinoleic acid di (phytosteryl / isostearyl / cetyl / stearyl / behenyl) 1
4. Ethyl isostearate 7
5. Olive oil 2
6. Oleyl alcohol 1
7). Methyl trimethicone (Note 14) 2
8. Dimethylpolysiloxane (Note 15) 2
9. Tetraoleic acid polyoxyethylene sorbit (Note 3) 10
10. Polyoxyethylene glyceryl isostearate (Note 5) 6.5
11. Ethanol 3
12. Phenoxyethanol 0.1
13. Cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol (Note 16)
1
14. Tocopherol 0.01
15. Diisostearyl malate 9
(Note 14) TMF-1.5 (manufactured by Shin-Etsu Chemical Co., Ltd.)
(Note 15) KF-96L-1.5cs (manufactured by Shin-Etsu Chemical Co., Ltd.)
(Note 16) NEOSOLUE-AQULIO (made by Nippon Seika Co., Ltd.)

(Production method)
Ingredients 3 and 4 are uniformly dissolved by heating and mixing at 70 ° C., and after cooling to 30 ° C., ingredients 1, 2 and 5 to 15 are mixed and stirred to make them uniform, and filled in a container to wash I got

  Example 13: The cleansing agent had good cleansing effect, no dripping, gentle feeling, refreshing feeling of washing away, and stability over time.

Claims (4)

The following components (a) to (e);
(A) Diester of dimer acid (b) Fatty acid polyoxyethylene sorbit having HLB in the range of 8 to 12 and / or 10 to 35% by mass of fatty acid polyoxyethylene glyceryl
(C) 10-30% by mass of hydrocarbon oil that is liquid at 25 ° C.
(D) volatile silicone oil (e) containing diisostearyl malate,
Liquid oil-based skin cleansing composition characterized in that the content mass ratio (a) / (e) of the component (a) to the component (e) is 0.1-1. The component (a) is a dimer of unsaturated fatty acid having 11 to 22 carbon atoms, and a saturated or unsaturated linear or branched monohydric alcohol having 12 to 34 carbon atoms or a ring-containing or cyclic group The liquid oil-based skin cleansing composition according to claim 1, which is a diester with a sterol. The liquid oil-based skin cleansing composition according to any one of claims 1 and 2, wherein the content of the component (a) is 0.1 to 10% by mass. 4. The liquid oily skin cleanser according to any one of claims 1 to 3, wherein the mass ratio (a) / (d) of the component (a) and the component (d) is 0.25 to 1.25. Composition.