JP7111644B2 - Foam cleansing cosmetics - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cleansing cosmetic that foams when discharged from a container.

Cleansing cosmetics containing a large amount of oily components are used to remove skin stains and cosmetics. Cleansing cosmetics are provided in various forms (types).
A foamy cosmetic made by aerosolizing an oil-based composition with a propellant is a foamy cosmetic that does not drip easily and can be easily applied to the skin and hair. Used in cleansing cosmetics.
Foamy cleansing cosmetics are produced by aerosolizing a composition in which a surfactant is added to an oil component together with a volatile propellant so that the oil component becomes foamy. Polyglycerin fatty acid esters are the first choice for surfactants used with oils because of their good foaming properties and foam sustainability when aerosolized. Many are disclosed (for example, patent document 1, patent document 2).

Massage cosmetics, pack cosmetics, and cleansing cosmetics mainly containing oil are preparations that need to be wiped off or washed off after being applied to the skin. However, in recent years, these preparations are becoming mainstream in the wash-off type. In addition, there is a tendency to prefer cosmetics that do not leave a lingering impression on the skin after rinsing and that have a refreshing touch.

A technique of foaming aerosol-type cleansing cosmetics using a combination of lipophilic and hydrophilic polyglycerol fatty acid esters is known for the purpose of improving foam quality and water-based dirt removing ability (Patent Document 3). This technique is a technique for making the emulsified composition into a foamy state, which requires the addition of water and does not necessarily have sufficient cleansing power. In general, it is said that cleansing cosmetics containing mainly oily ingredients that do not substantially contain water are better compatible with oily makeup stains and have better cleansing power than cleansing cosmetics containing water. .

As a cleansing cosmetic excellent in removing oily makeup, Patent Document 4 discloses an aerosol-type cleansing cosmetic containing 60 to 95% by mass of liquid oil and (B) 2 to 40% by mass of a hydrophilic surfactant. there is
The present applicant also proposed (A) a liquid oil, (B) a polyglycerin fatty acid ester obtained by esterifying a fatty acid having 6 to 18 carbon atoms and a polyglycerin having an average degree of polymerization of 2 to 6, and (C) one hydroxyl group. We have proposed and obtained a patent for a foam cosmetic containing liquid decaglycerin fatty acid ester that is not acylated at three sites (Patent Document 5).
Further, Patent Document 6 discloses a cleansing agent which is an aerosol composition containing a polyhydric alcohol, which does not cause dripping or the like on the application surface and which has an excellent feeling of use.
As described above, various foamy cleansing cosmetics have been proposed, but none of them have been sufficiently satisfactory. Furthermore, there is a demand for an excellent foam-like cleansing cosmetic. It is required to have a cleansing power when used as a cosmetic and to have no residual feeling (slimy feeling) on the skin after rinsing.

JP-A-2002-241745 JP-A-2004-250355 JP-A-2005-325038 JP 2014-201523 A Japanese Patent No. 6026312 JP-A-06-100414

The present invention provides good dischargeability and foamability from an aerosol container, good elasticity of the obtained foam, fineness of foam, and good sustainability of foam, and cleansing power when used as a cleansing cosmetic. To provide a foamy cosmetic for cleansing which does not leave a residual feeling (sliminess) on the skin after rinsing.

The main configuration of the present invention is as follows.
(1) A foamy cleansing cosmetic containing A to D, containing 5 to 15% by mass of A and having a mass ratio of A:B of 5:1 to 1:2.
(A) diphenylsiloxyphenyl trimethicone (B) one or more selected from glycerin, diglycerin and polyglycerin (C) hydrophilic surfactant (D) oil (2) (D) oil is triethylhexa The foam cleansing cosmetic according to (1), which contains noin and/or cetyl ethylhexanoate.
(3) (C) The foamy cleansing cosmetic according to (1) or (2), wherein the hydrophilic surfactant has an HLB value of 10 to 15.
(4) The foamy cleansing cosmetic according to any one of (1) to (3), which does not contain a thickener.

The foamy cosmetic composition for cleansing provided by the present invention has good foam dischargeability and foamability from the injection container, excellent foam elasticity, fine texture, and excellent foam sustainability, and has a cleansing function to remove makeup stains. It is a foamy cleansing cosmetic that has a high cleansing property, good washability, cleansing power when used as a cleansing cosmetic, and does not leave a residual feeling (slimy feeling) on the skin after being washed away. The foamy cleansing cosmetic of the present invention is used by filling it in a spray container, and it becomes a foamy cleansing cosmetic by spraying. Since the foam can be maintained for a long time during action, it does not drip from the skin during cleansing and is easy to use. By adopting the configuration of the present invention, a cleansing composition with excellent usability can be obtained without blending a thickener that is blended to prevent dripping of a so-called liquid oily cleansing composition.

In the present specification, when referring to a foamy cleansing cosmetic, unless otherwise specified, a liquid cleansing cosmetic (an undiluted solution for obtaining a foamy cleansing cosmetic, hereinafter referred to as a liquid cleansing cosmetic) ) refers to a case in which a propellant is ejected from a filled container to the outside of the container to form a foam containing aerosol as the propellant. In addition, when indicating the total amount of the cleansing cosmetic as a basis for indicating the content of each component of the foamy cleansing cosmetic, the cleansing cosmetic is the total mass other than the propellant (gas component at normal temperature and pressure). show.
The compounding components of the present invention are described below.

<Essential ingredients>
(A): Diphenylsiloxyphenyl trimethicone The foam cleansing cosmetic of the present invention contains diphenylsiloxyphenyl trimethicone as an essential ingredient. Diphenylsiloxyphenyl trimethicone is a silicone with increased viscosity and emollient properties by adding a phenyl group to a silicone base. The foamy cosmetic composition for cleansing of the present invention preferably contains 5 to 15% by mass, more preferably 5 to 10% by mass of diphenylsiloxyphenyl trimethicone based on the total amount of the cosmetic foamy cleansing composition.

(B) Glycerin, diglycerin, polyglycerin The cleansing cosmetic composition of the present invention contains one or more substances selected from glycerin, diglycerin and polyglycerin as the second essential component. Polyglycerin having an average degree of polymerization of 3 to 10 is preferred, and polyglycerin-3 is particularly preferred. In the foamy cleansing cosmetic composition of the present invention, the B components may be blended either singly or in combination. When blending in combination, let the total amount be the blending amount of B component. The blending amount (total blending amount) of glycerin, diglycerin, and polyglycerin is determined according to the blending amount of (A) diphenylsiloxyphenyl trimethicone. The blending amount of glycerin, diglycerin, and polyglycerin as components (B) is the blending ratio of A component and B component contained in the foamy cleansing cosmetic, A: B, in a mass ratio of 5: 1 to 1. :2, more preferably 5:4 to 1:2.

(C) Hydrophilic surfactant The cleansing cosmetic of the present invention contains a hydrophilic surfactant. Hydrophilic surfactants are blended in order to achieve a refreshing finish when rinsed with water after cleansing. For this purpose, it is preferred that the hydrophilic surfactant used in the present invention has an HLB value of 10 to 15. Specifically, polyoxyethylene glyceryl monoisostearate (30EO) (HLB 15.0), polyoxyethylene glyceryl triisostearate (20EO) (HLB 10.4), polyglyceryl-10 stearate (HLB 12.0), isostearic acid Polyglyceryl-10 (HLB14.0), Polyglyceryl-10 diisostearate (HLB11.1), Polyglyceryl-6 dicaprate (HLB10.2), Polysorbate 60 (HLB14.9), PEG-20 sorbitan isostearate (HLB15.0) etc. can be exemplified. Polyglyceryl-10 diisostearate, polyglyceryl-6 dicaprate, PEG-20 sorbitan isostearate are particularly preferred.
The blending amount of the hydrophilic surfactant is 10 to 30% by mass, preferably 15 to 25% by mass, particularly preferably 15 to 22% by mass, based on the total amount of the cleansing cosmetic.

(D): Oil agent As the oil agent used in the cleansing cosmetic of the present invention, any oily component that is commonly used in cosmetics can be used. Among them, liquid oil is preferred. The liquid oil referred to in the present invention may be any oil that is liquid at room temperature (25° C.) and is used in cosmetics. In addition, solid oil, paste oil, or semi-paste oil may be added as long as it dissolves in the components to be added at the same time and becomes liquid. Examples of oil agents used in the present invention include triglycerides, monovalent fatty acid esters of monovalent fatty acids and monovalent alcohols (hereinafter referred to as ester oils), liquid waxes, hydrocarbon oils, higher fatty acids, higher alcohols, and the like. mentioned.
Triglycerides include olive oil, macadamia nut oil, sunflower seed oil, avocado oil, safflower oil, rice bran oil, rice germ oil, wheat germ oil, castor oil, grape seed oil, almond oil, coconut oil, palm oil, avian (capryl/ Glyceryl capric acid, glyceryl tri-2-ethylhexanoate (triglyceride of 2-ethylhexanoic acid and glycerin), jojoba oil as liquid wax, liquid paraffin and squalane as hydrocarbon oil, isostearic acid as higher fatty acid , oleic acid, and higher alcohols such as octyldodecanol and oleyl alcohol.
Examples of ester oils include octyl isononanoate, isononyl isononanoate, isopropyl myristate, isodecyl isononanoate, isopropyl palmitate, octyl palmitate, hexyl laurate, octyl isopalmitate, isocetyl octanoate, isopropyl isostearate, and ethyl isostearate. , cetyl isooctanoate (cetyl ethylhexanoate), stearyl octanoate, isostearyl octanoate, and the like. In particular, triglycerides are preferably used in the present invention because they easily foam in oil agents. In addition, ester oil is preferably used in the present invention because it is easily compatible with make-up stains and enhances cleansing power. A combination of triglyceride and ester oil is preferable because it facilitates the realization of a foamy cleansing cosmetic having both foaming and cleansing power. It is preferable that the total amount of the oil agent is 55 to 80% by mass based on the total amount of the cleansing cosmetic excluding the propellant. For example, when glyceryl triethylhexanoate (triethylhexanoin) is selected as the triglyceride and cetyl ethylhexanoate is selected as the ester oil and combined, triethylhexanoin is 0 in the total amount of the cleansing cosmetic excluding the propellant. To 25% by mass, preferably 5 to 22% by mass, and particularly preferably 45 to 80% by mass of cetyl ethylhexanoate.

(E); Propellant The foamy cleansing cosmetic of the present invention changes from a liquid state to a foamy state (foamy cleansing cosmetic) when it is filled in a container and discharged. It is preferable to fill the container together with the propellant.
Examples of the propellant used in the present invention include chlorofluorocarbons such as trichlorofluoromethane, dichlorodifluoromethane, dichlorofluoromethane, trichlorotrifluoromethane, and dichlorotetrafluoromethane; propane, isobutane, isopentane, normal butane, liquefied petroleum gas (LPG), and the like. liquefied gas, carbon dioxide gas, nitrogen gas, and the like. LPG is not particularly limited as long as it is generally used for cosmetics, such as a mixture of propane and butane. Carbon dioxide gas is preferably used in consideration of safety and mildness when the foamy cleansing cosmetic is applied to the skin. A propellant can be used individually or in mixture of 2 or more types.

The foamy cosmetic composition for cleansing of the present invention can be produced according to a conventional method. That is, it can be obtained by appropriately heating all of the ingredients, stirring and mixing, and cooling to room temperature.
In order to foam the foamy cosmetic composition for cleansing of the present invention, a propellant is further blended, and the mixture is filled in a container capable of being sprayed, and is produced according to a conventional method. For example, it can be produced by putting a liquid cleansing cosmetic in an aerosol container such as an aerosol can, a PET resin container, or a pressure-resistant glass container, and filling the container with a propellant.

When the foam cleansing cosmetic composition of the present invention is foamed, the mixing ratio of the foam cleansing cosmetic composition and the propellant is not particularly limited, but the mixing ratio of the foam cleansing cosmetic composition: propellant ( mass ratio) is preferably in the range of 70:30 to 98:2. Within this range, the foaming of the foamy cleansing cosmetic of the present invention is sufficiently achieved. When the blending ratio (mass ratio) of the foamy cleansing cosmetic composition to the propellant deviates from 98:2 and the blending amount of the propellant is less than 2% by mass, good foaming is unlikely to occur, resulting in a preferable foamy cleansing. Cosmetics may become difficult to obtain.

<Optional component>
The foamy cosmetic composition for cleansing of the present invention can contain various raw materials commonly used in cosmetics as optional ingredients within a range that does not impair the effects of the present invention.
For example, moisturizing agents, preservatives, fragrances, and the like can be blended. Surfactants other than component (C), which is essential in the present invention, can also be blended as long as they do not affect the effects of the present invention. For example, polyglyceryl-2 isostearate (HLB 5.5) is a lipophilic surfactant, but it may be blended as long as the mixed HLB value of all the surfactants to be blended falls within the range of 10 to 15. .

In the present invention, in order to sufficiently exhibit the cleansing effect, it is preferable not to contain water or to add as little water as possible. It is not limited to be contained as necessary, such as when water is used as a solvent for a solid water-soluble component.

EXAMPLES The present invention will be specifically described below with reference to examples and comparative examples.
(1) Preparation of foamy cleansing cosmetic (cleansing cosmetic before filling in aerosol container) Examples 1 to 12 with the composition shown in Table 1, Comparative Examples 1 to 10 with the composition shown in Table 2 A cleansing cosmetic was prepared.
In addition, hereinafter, the foamy cleansing cosmetic refers to the foamy composition discharged from the container, and is distinguished from the foamy cleansing cosmetic (cleansing cosmetic before filling the aerosol container). there is Foamy cleansing cosmetics are sometimes simply referred to as cleansing cosmetics.
・Preparation method (A) diphenylsiloxyphenyl trimethicone, (B) one or more selected from glycerin, diglycerin, and polyglycerin, (C) hydrophilic surfactant, and (D) oil at 80°C or higher , and after uniformly dissolving, the mixture was cooled with stirring to prepare a foamy cleansing cosmetic (undiluted solution).
Next, this foamy cleansing cosmetic was filled in a container together with the propellant (E). Carbon dioxide was used as a propellant, and an aerosol container was filled so that the mixing ratio of the foamy cleansing cosmetic and the propellant was 97:3 by mass.

(2) Evaluation of foamy cleansing cosmetic The foamy cleansing cosmetic of the present invention has excellent foam dischargeability, foam elasticity, fineness, and foam sustainability, and has a high cleansing function to remove makeup stains. It becomes a foamy cleansing cosmetic that does not leave a residual feeling (slimy feeling) on the skin after washing.
Evaluation items and evaluation criteria are as follows.

<1> Sustainability of Foam 3 g of foam was ejected from an aerosol container into a 30 mL beaker to form foam, and the time until the volume of the foam decreased to 1/3 was measured to determine the duration of foam.
Evaluation criteria are as follows.
◎: 6 minutes or more ○: 4 minutes or more and less than 6 minutes △: 2 minutes or more and less than 4 minutes ×: less than 2 minutes

<2> Usability Evaluation Ten sensory evaluators visually evaluated the evaluation items [dischargeability, foam fineness, foam elasticity (foam elasticity)] according to the following evaluation criteria. The table describes the evaluations determined through discussion among 10 people.
The evaluation was carried out by discharging an amount of each foamy cleansing cosmetic into the palm so as to be the size of a single ping-pong ball.

1) Ejectability (evaluation criteria)
〇: Foam is continuously foamed ×: Foam is not continuously foamed and foamed like clogging

2) Foam fineness (evaluation criteria)
〇: Fine foam texture ×: Rough foam texture

3) Foam elasticity (evaluation criteria)
1 point: very bad
2 points: bad 3 points: fair 4 points: good 5 points: very good
Regarding the elasticity of the foam, the average score of the scores of 10 sensory evaluators was obtained, and the results were rated from ⊙ to × according to the following criteria and listed in the table.
×: 1 to 2.0 points △: 2.1 to 3.0 points ○: 3.1 to 4.0 points ◎: 4.1 to 5.0 points

<3> Evaluation of cleansing power Ten sensory evaluators applied an appropriate amount of lipstick to the inner part of the forearm, dried for 30 minutes, and then discharged a fixed amount of foamy cleansing cosmetic (the size of one ping-pong ball). The lipstick was removed by rubbing the finger in a circular motion 30 times. Next, while running water was applied to the cleansed area, it was rinsed off while lightly rubbing it with fingers three times, and the condition of the skin after rinsing was visually confirmed. Evaluation criteria are as follows.
○: Lipstick is completely removed ×: There is a trace of lipstick

<4> Evaluation of washability Ten sensory evaluators discharged a fixed amount of foamy cleansing cosmetic (the size of one ping-pong ball) on the inside of the forearm, and rubbed it with their fingers in a circular motion 30 times. Get used to it. Next, while applying running water, it was rinsed off while lightly rubbing it with a finger three times, and the feel of the skin after rinsing was evaluated by touching it with a finger. Evaluation criteria are as follows.
○: No oily sliminess △: Slightly oily slimy feeling
×: Feel oily slimy

(3) Evaluation results of foamy cleansing cosmetics From the evaluation of Examples 1, 3, and 12, the foamy cleansing containing glycerin, diglycerin, and polyglycerin-3 in the A component and the B component is foam It was found to be excellent in longevity, dischargeability, fineness of foam, elasticity of foam, and washability. On the other hand, in Comparative Example 8, which contained component A but did not contain component B, and contained 3% water instead of component B, it was found that the foam ejection performance was poor and the elasticity of the foam was also poor. In Comparative Examples 9 and 10, in which similar components such as dipropylene glycol (DPG) and pentanediol were blended in place of component B, foam persistence, dischargeability, fineness, and foam elasticity deteriorated. It turned out to be worse.

From the comparison between Example 8 and Comparative Example 4, it was found that the blending of component B alone could not improve the dischargeability, foam fineness, and foam elasticity, and that component A (diphenylsiloxyphenyl trimethicone) and component B were blended together. It was found that by doing so, the dischargeability, the fineness of the foam, and the elasticity of the foam were improved.

From the comparison between Example 7 and Comparative Examples 6 and 7, it was found that the foam cleansing cosmetic containing diphenylsiloxyphenyl trimethicone as the component A has good foam durability, fine texture, and elasticity. . On the other hand, even if dimethicone or cyclopentasiloxane, which are the same silicon compounds, are added in place of diphenylsiloxyphenyl trimethicone, the effects of improving foam persistence, fineness, and foam elasticity cannot be obtained. I found out.

From a comparison of Examples 1 to 12 and Comparative Example 5, the blending amount of component A (diphenylsiloxyphenyl trimethicone) is within the range of 5 to 15% by mass, and the blending ratio with component B (glycerin, diglycerin) is It was found that when A:B is 5:1 to 1:2, all usability such as foam sustainability and foam elasticity are improved. The blending amount of component A (diphenylsiloxyphenyl trimethicone) is 3% by mass, the blending amount of component B (glycerin) is 3% by mass, and the blending ratio of A and B is A:B=1:1. In Comparative Example 5, the foam resilience was evaluated as Δ, which indicates that the average score of 10 sensory evaluators did not reach the “normal” level. It has been found that the proportion of the B component is important.

As described above, (A) diphenylsiloxyphenyl trimethicone, (B) one or more selected from glycerin, diglycerin and polyglycerin, (C) a hydrophilic surfactant, and (D) an oil, A foamy cleansing cosmetic containing 5 to 15% by mass of (A) and having an A:B ratio of 5:1 to 1:2 has good dischargeability from an aerosol container, and the resulting foam has elasticity and texture. The fineness was good, the foam was excellent in durability, and the cleansing power when used as a cleansing cosmetic composition did not leave a residue (sliminess) on the skin after rinsing.

Claims (2)

A foamy cleansing cosmetic containing A to D, containing 5 to 15% by mass of A and having a mass ratio of A:B of 5:1 to 1:2.
(A) diphenylsiloxyphenyl trimethicone (B) one or more selected from glycerin, diglycerin and polyglycerin (C) a hydrophilic surfactant having an HLB value of 10 to 15 (D) triethylhexanoin and/or an oil agent containing cetyl ethylhexanoate The foamy cleansing cosmetic according to claim 1, which does not contain a thickener.