JP2020143011A - Cleansing cosmetic - Google Patents

Abstract

To provide a cleansing cosmetic which is suitable for washing a makeup cosmetic having excellent water resistance and oil resistance and good makeup durability and excels in ease of washing away.SOLUTION: There is provided a cleansing cosmetic which comprises (A) an ester oil, (B) a hydrocarbon oil which is liquid at normal temperature, (C) a hydrocarbon oil which is solid at normal temperature and (D) a nonionic surfactant having an HLB of 3 or more and 14 or less, wherein the blending amount of the component (A) with respect to the entire liquid oily component is 90 to 95 mass%, the blending amount of the component (B) with respect to the entire cleansing cosmetic is 5 to 10 mass%, the blending amount of the component (C) with respect to the entire cleansing cosmetic is 1 to 10 mass%, at least two or more components (D) are blended, and the blending amount of the cosmetics (D) with respect to the entire cleansing cosmetic is 10 to 20 mass%.SELECTED DRAWING: None

Description

The present invention relates to cleansing cosmetics.

In recent years, many make-up cosmetics have been sold that have a long-lasting makeup and do not lose their makeup for a long time. Since such makeup cosmetics are excellent in water resistance and oil resistance, they have a long-lasting makeup, but have a problem that they are difficult to remove when washing.

Various types of cleansing cosmetics for cleaning make-up cosmetics have been developed, such as oil-based cleansing cosmetics having high detergency. For example, Patent Document 1 discloses an water-based cleansing cosmetic that does not contain oil, and describes that it has a foaming function and a refreshing feeling of use can be obtained. Further, Patent Document 2 discloses an oil-based cleansing cosmetic that prevents dripping by adding an oil thickener.

Japanese Unexamined Patent Publication No. 7-215840 Japanese Unexamined Patent Publication No. 2003-252726

However, since the water-based cleansing cosmetics as described in Patent Document 1 do not contain oil, they may not be sufficiently compatible with makeup cosmetics having a long-lasting makeup and may be inferior in removing effect. there were.

Further, an oil-based cleansing cosmetic as described in Patent Document 2 is easy to be familiar with a make-up cosmetic having a long-lasting makeup, but there may be a feeling of residual oil or stickiness after washing. there were.

Therefore, the present invention has been made in view of the above-mentioned problems, and provides a cleansing cosmetic that is suitable for washing a make-up cosmetic having excellent water resistance and oil resistance and has a long-lasting makeup, and is excellent in ease of washing. The purpose is.

In order to achieve the above object, the cleansing cosmetics of the present invention include (A) ester oil, (B) hydrocarbon oil that is liquid at room temperature, (C) hydrocarbon oil that is solid at room temperature, and (D) HLB3 or more 14 It contains the following non-ionic surfactants, the amount of the component (A) to the whole liquid oil is 90 to 95% by mass, and the amount of the component (B) to the whole cleansing cosmetics is 5 to 10. It is mass%, and the blending amount of the component (C) with respect to the whole cleansing cosmetic is 1 to 10 mass%, and at least two kinds of the component (D) are blended, and the blending amount is added to the whole cleansing cosmetic. On the other hand, it is characterized by being 10 to 20% by weight.

According to the present invention, it is possible to easily wash away a make-up cosmetic having excellent water resistance and oil resistance and having a long-lasting makeup.

Hereinafter, preferred embodiments of the present invention will be described.

The cleansing cosmetics of the present invention are oil-based cleansing cosmetics, which are (A) ester oil, (B) liquid hydrocarbon oil at room temperature, (C) solid hydrocarbon oil at room temperature, and (D) HLB3 or more 14 It contains the following non-ionic surfactants, the amount of the component (A) to the whole liquid oil is 90 to 95% by mass, and the amount of the component (B) to the whole cleansing cosmetics is 5 to 10. It is mass%, and the blending amount of the component (C) with respect to the whole cleansing cosmetic is 1 to 10 mass%, and at least two kinds of the component (D) are blended, and the blending amount is added to the whole cleansing cosmetic. On the other hand, it is 10 to 20% by weight.

The term "normal temperature" as used herein means a temperature in the range of 20 ° C. ± 15 ° C. (5 to 35 ° C.).

<Component A: Ester oil>
In the present invention, the ester oil is liquid at room temperature. Examples of the ester oil include monohydric alcohol carboxylic acid ester, polyhydric alcohol fatty acid ester, and the like. Specifically, for example, ethyl hexyl palmitate, tri (caprylic acid / capric acid) glyceryl, and the like are used. be able to. The ester oil may be used alone or in combination of two or more.

From the viewpoint of production stability of cleansing cosmetics, it is preferable to use ethyl hexyl palmitate and tri (caprylic acid / capric acid) glyceryl, which have a small volume change when cooled after being dissolved and mixed with solid hydrocarbons. More preferably, it is ethyl hexyl palmitate.

The content of the ester oil is preferably 90 to 95% by mass based on the total amount of the cleansing cosmetic.

<Component B: Liquid hydrocarbon oil>
In the present invention, the liquid hydrocarbon is liquid at room temperature. It is not particularly limited as long as it is usually used for cosmetics, and any of linear or branched chain, saturated or unsaturated hydrocarbons can be used. Specifically, for example, mineral oil, hydrogenated polyisobutene, hydrogenated polydecene, hydrogenated poly (C6-12 olefin), squalane, squalene and the like can be used, and one or more of these can be used. Although it may be used, it is more preferable to use hydrogenated polydecene.

The content of the liquid hydrocarbon is preferably 5 to 10% by mass based on the total amount of the cleansing cosmetic.

<Component C: Solid hydrocarbon oil>
In the present invention, the solid hydrocarbon is solid at room temperature and is used as a thickener. For example, polyethylene, selecin, paraffin wax, microcrystalline wax and the like can be mentioned, and one type or a combination of two or more types may be used. From the viewpoint of moldability and product stability, it is preferable to use polyethylene and microcrystalline wax.

<Component D: Nonionic surfactant>
In the present invention, the nonionic surfactant is for making the makeup cosmetic and the cleansing ingredient familiar and easy to wash. From the viewpoint of achieving both compatibility with makeup cosmetics and solubility in water when washed away, two or more types of nonionic surfactants having an HLB value of 3 to 14 are used, more preferably three or more types. Is desirable. By blending a plurality of nonionic surfactants having different HLB values in combination, it is possible to obtain a well-balanced performance.

The "HLB (hydrophile-lipophile balance) value" referred to here is empirically derived from an emulsification test by Griffin of Atlas Powerer of the United States using its own nonionic surfactant. Yes, a formula expressing the relationship between this HLB value and the chemical structure of the surfactant has been proposed (see "New Cosmetics Handbook" Nikko Chemicals Co., Ltd. (issued on October 30, 2006)). An example of the calculation formula of the HLB value is shown in the following formulas (1) to (3).

(Number 1)
In the case of polyhydric alcohol fatty acid ester 20 (1-S / A) ... (1)
(S: Saponification value of ester, A: Neutralization value of fatty acid)

(Number 2)
In the case of polyhydric alcohol fatty acid ester whose saponification value is unclear (E + P) / 5 ... (2)
(E: Weight fraction of EO group, P: Weight fraction of polyol group)

(Number 3)
When only EO group is contained as hydrophilic group E / 5 ... (3)
(E: Weight fraction of EO group)

Specific examples of the nonionic surfactant include PEG-20 glyceryl triisostearate (HLB: 8.0), PEG-5 glyceryl triisostearate (HLB: 3.0), and PEG-15 glyceryl oleate (HLB: 3.0). HLB: 14), PEG-60 hydrogenated castor oil (HLB: 13.5), (C12-14) Palace-9 (HLB: 13.5), Solves tetraoleate-30 (HLB: 11.5), PEG-15 glyceryl stearate (HLB: 9.5), PEG-6 sorbitan oleate (HLB: 10.0), and the like can be used in combination. Of these, PEG-20 glyceryl triisostearate (HLB: 8.0), PEG-5 glyceryl triisostearate (HLB: 3.0) and (C12-14) Palace-9 (HLB: 13.5) are preferred. ) Are mixed and used.

Further, from the viewpoint of ease of rinsing, in the present invention, it is preferable to add 10 to 20% by mass of the nonionic surfactant to the entire cleansing cosmetic.

<Other ingredients>
The cleansing cosmetics of the present invention may appropriately contain other ingredients usually used in cosmetics within a range not deviating from the object of the present invention. Other components include, for example, antioxidants (eg, tocopherol acetate), preservatives (eg, phenoxyethanol, methylparaben, ethylparaben, etc.), moisturizers, wetting agents, emollients (eg, hydrogenated dimer dilinoleic acid). Castor oil, dimer linoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl), dilauroyl glutamate (octyldodecyl / phytosteryl / behenyl, etc.), vitamins, plant extracts, scrubbing agents, mud, powders, colorants, Perfume may be included.

From the above, the cleansing cosmetic of the present invention contains 90 to 95% by mass of the ester oil with respect to the entire liquid oil, and 5 to 10% by mass of the liquid hydrocarbon oil with respect to the entire cleansing cosmetic. , The amount of solid hydrocarbon oil blended in the total amount of cleansing cosmetics is 1 to 10% by mass, and at least two types of nonionic surfactants having HLB 3 or more and 14 or less are blended, and the blending amount is used for cleansing makeup. When the content is 10 to 20% by weight based on the total amount of the material, it is suitable for washing a make-up cosmetic having excellent water resistance and oil resistance and having a long-lasting makeup, and can be easily washed away.

Hereinafter, the present invention will be described based on examples. The present invention is not limited to these examples, and these examples can be modified or modified based on the gist of the present invention, and they are not excluded from the scope of the invention. Absent.

<Examination of liquid oily components: Examples 1 to 3 and Comparative Examples 1 to 3>
The optimum liquid oily component to be the base material of the present invention was selected by preparing and evaluating the samples of Examples 1 to 3 and Comparative Examples 1 to 3 having the compositions shown in Table 1 by the following methods.

(Sample creation method and evaluation method)
Each liquid oily component and solid hydrocarbon (polyethylene (melting point 75 to 90 ° C.)) are weighed to the blending ratios shown in Table 1, dissolved and mixed, and then solidified by natural cooling before and after cooling. The volume change was evaluated according to the following criteria.

(Evaluation criteria)
◯: Almost no volume change △: Volume change is seen the day after cooling ×: Volume change is seen immediately after cooling

As shown in Table 1, when ethyl hexyl palmitate and tri (caprylic acid / capric acid) glyceryl as ester oils are used (Examples 1 and 2), and hydrogenated poly (C6-) which is a liquid hydrocarbon oil. 12) When olefins were used (Example 3), no volume change was observed, so it was confirmed that stable production was possible by using these components. When other components were used (Comparative Examples 1 to 3), a decrease (shrinkage) in volume was observed after cooling.

<Study of Nonionic Surfactant: Examples 4 and 5 and Comparative Examples 4 to 8>
Samples of Examples 4 and 5 and Comparative Examples 4 to 8 having the compositions shown in Table 2 were prepared and evaluated by the following methods, and the optimum components and combinations were selected.

(Sample creation method and evaluation method)
Weigh each component to the blending ratio shown in Table 2, mix well by hand stirring, visually observe the mixed state, and determine the compatibility between the liquid oil component and the nonionic surfactant according to the following criteria. evaluated. In addition, the mixed solution was taken on the back of the hand, spread lightly, mixed with a small amount of water, washed with running water, and the ease of rinsing was evaluated according to the following criteria.

(Evaluation criteria)
・ Compatibility ○ ‥ Completely dissolved and mixed transparently △ ‥ Not completely dissolved but translucent but uniformly dispersed × ‥ Almost insoluble and separated immediately ・ Easy to wash off ◎ ‥ Flow with running water , There is almost no feeling of residual oil ○ ‥ There is a feeling of residual oil flowing under running water △ ‥ It flows under running water but there is a feeling of residual oil × ‥ It does not flow under running water and cleansing agent remains on the skin

As shown in Table 2, when only one type of nonionic surfactant was blended (Comparative Examples 4, 7 and 8), the result was inferior to the case where two or more kinds were blended.

In addition, even when three types of nonionic surfactants are blended, differences in compatibility and ease of washing are observed depending on the blended components, and PEG-20 glyceryl triisostearate and PEG-5 triisostearate are mixed. The most excellent performance was obtained when three types of glyceryl and (C12-14) Palace-9 were blended (Example 5).

<Examination of compounding ratio: Example 6 and Comparative Examples 9 to 25>
The optimum ingredients were selected by preparing and evaluating the cleansing cosmetics of Examples 6 and Comparative Examples 9 to 25 having the compositions shown in Tables 3 and 4 by the following methods.

(Manufacturing method of cleansing cosmetics)
Each component was weighed to the blending ratio shown in Tables 3 and 4, dissolved and mixed at 90 to 95 ° C., and then solidified by natural cooling.

(Sensory test)
An appropriate amount of the produced cleansing cosmetic was taken on the back of the hand, spread with fingers, and the smoothness was evaluated according to the following criteria. In addition, the cleansing cosmetics on the back of the hand were washed with running water, and the ease of washing was evaluated according to the following criteria.

(Evaluation criteria)
・ Smoothness ○: Cleansing agent lumps disappear immediately △: Cleansing agent lumps remain, but disappear after a while ×: Cleansing agent lumps remain and do not disappear ・ Easy to wash off ○: Flowing with running water, feeling of residual oil There is almost no △: It flows under running water, but there is a feeling of residual oil ×: It does not flow under running water, and the cleansing agent remains on the skin

(Stability test)
The cleansing agent was filled in a resin container, naturally cooled, and stored in a constant temperature bath at 5 ° C, 25 ° C, 40 ° C, and 50 ° C the next day. After 1 month, 2 months, 3 months, and 6 months, changes in hardness and changes in appearance such as separation, shrinkage, cracks, and sweating were observed by a rheometer, and stability was evaluated according to the following criteria.

(Evaluation criteria)
◯: Almost no change in hardness and appearance Δ: Almost no change in hardness, but cracks, sweating, etc. ×: Significant change in hardness and appearance

As shown in Tables 3 and 4, only the composition of Example 6 satisfying the components of the present invention showed the best performance in all the endpoints.

As described above, the present invention is particularly useful for cleansing cosmetics.

Claims (1)

The following components (A), (B), (C), and (D):
(A) Ester oil (B) Hydrocarbon oil that is liquid at room temperature (C) Hydrocarbon oil that is solid at room temperature (D) Contains a nonionic surfactant with an HLB of 3 or more and 14 or less.
The blending amount of the component (A) with respect to the entire liquid oil component is 90 to 95% by mass.
The blending amount of the component (B) with respect to the whole cleansing cosmetic is 5 to 10% by mass.
The blending amount of the component (C) with respect to the whole cleansing cosmetic is 1 to 10% by mass.
A cleansing cosmetic containing at least two or more components (D), the amount of which is 10 to 20% by weight based on the total amount of the cleansing cosmetic.