TW201626981A - Skin cosmetic and skincare method - Google Patents

Abstract

The present invention provides a skin cosmetic that has excellent massage properties, that can generate foam during massaging and form a foam-containing coating film, that has excellent coating film performance, and that makes cleansing easy. The present invention also provides a skincare method wherein cleansing is performed by applying the skin cosmetic of the present invention to skin and massaging. A skin cosmetic that contains components (A)-(E): (A) 0.9-13.5 weight% of an alkyl ether carboxylic acid or a salt thereof, (B) 3.0-40.0 weight% of an oil, (C) 0.3-1.9 weight% of xanthan gum, (D) 0.35-1.5 weight% of an acrylate polymer, and (E) water. The total content (C)+(D) of components (C) and (D) is 0.8-3.0 weight%, the weight ratio ((C)+(D))/(A) of the total content of components (C) and (D) to component (A) is 0.18-3.33, and the content ratio [(C)/(D)] of component (C) to component (D) is 0.25-3.0.

Description

Skin cosmetics and skin care methods

The present invention relates to a skin cosmetic and skin care method.

In modern society, the pace of life of people is gradually accelerating. Among them, in order to save time, the need for skin care while washing the shower or bathing to remove dirt has also increased.

For skin care, use a dressing or massage. For example, related massage agents are disclosed in Patent Documents 1 and 2.

Patent Document 1 relates to an aqueous massage cosmetic in which a predetermined surfactant is formulated in an aqueous base material containing a water-soluble polymer, and a whitening agent and a blood supply accelerator are used in combination. It is described that the water-based massage cosmetic has the effects of skin color improving effect, massage performance, and dressing performance. Further, it is also described that the skin is entangled by the massage, and the cosmetic is turbid, and then the cosmetic which is white turbid and viscous is applied to the skin, thereby improving the skin color.

Patent Document 2 relates to an aqueous massage cosmetic containing an anionic surfactant, an amphoteric surfactant, a water-soluble polymer, and an oil agent. It is also described that the air bubbles are entrained in the coating film of the massage cosmetic to make it opaque, and to maintain a sufficient viscosity which is not dripped in the massage, and the film is excellent in retainability.

Patent Document 3 discloses a stabilizer containing a nonionic surfactant, another surfactant, a fragrance or a cosmetic, and a stabilizer composed of a clay and a polysaccharide gel. The mild cleansing composition further describes the effect of improving the foaming property, the stability, the washing effect, and the dryness of the skin in the composition containing a large amount of oil.

(Patent Document 1) Japanese Patent Laid-Open Publication No. 2004-339110

(Patent Document 2) Japanese Patent Laid-Open Publication No. 2006-137731

(Patent Document 3) Chinese Patent No. 1166855A

The present invention provides a skin cosmetic comprising the following components (A) to (E): (A) an alkyl ether carboxylic acid or a salt thereof, 0.9 to 13.5% by weight (B) an oil agent, 3.0 to 40.0% by weight (C) 0.1 to 1.9% by weight of sinica (D) acrylic polymer 0.35 to 1.5% by weight of (E) water, and the total content of components (C) and (D) [(C) + (D)] is 0.8 to 3.0% by weight The weight ratio of the total content of the components (C) and (D) to the component (A) [((C)+(D)))/(A)]) is 0.18 to 3.33, and the component (C) is relative to the component (D). The content ratio [(C)/(D)] is 0.25~3.0.

Further, the present invention provides a skin maintenance method in which the skin cosmetic of the present invention is applied to the skin and massaged and washed.

However, the cosmetic materials of Patent Documents 1 and 2 are for maintaining a liquid-free drop. Under the massage film formed by the massage to form a higher viscosity, it is difficult to wash away, and the cleaning effect is also low.

Further, the skin cosmetic of Patent Example 3 cannot form a film which can be kept on the face for a long time in a wet place such as a bathroom or a shower room. Therefore, it is impossible to maintain the skin cosmetic for a long period of time on the skin, and it is impossible to achieve an excellent skin care effect.

The present invention is excellent in massageability, and can form and retain a film containing bubbles on the skin during massage. Further, it is to provide a skin care cosmetic which has a moisturizing property and a detergency of the formed film.

The inventors of the present invention have found that in an O/W system containing a large amount of oil, the acrylic polymer and the trisin are used in combination at a predetermined ratio, and the alkyl ether carboxylic acid or a salt thereof is coated at a predetermined ratio. The skin is applied to the skin and massaged to entrap the air and contain air bubbles, thereby forming a white appearance film (white film), which is excellent in massage (easily spread, no slip), and has both cleansing and skin. A skin cosmetic that maintains the effect. Further, the formed film can be continuously held on the skin to maintain a white appearance, and even if water is mixed into the film, the liquid does not easily drip, and the white appearance remains unchanged.

Therefore, the skin cosmetic of the present invention can be used, for example, in a wet place such as a bathroom or a shower room, whereby the skin care effect and the washing effect caused by the full massage can be obtained at the time of showering or bathing.

Hereinafter, the components of the skin cosmetic of the present invention will be described in detail.

<ingredient (A)>

The alkyl ether carboxylic acid or a salt thereof as the component (A) used in the present invention is represented by the following formula (1).

[Chemical 1] RO-(CH ₂ CH ₂ 0) _n CH ₂ -COOX

(wherein R represents an alkyl group having 10 to 18 carbon atoms, n represents an average of 0.5 to 10, and X represents a cation derived from a hydrogen atom, an inorganic base or an organic base)

In the above formula, R is preferably an alkyl group having 12 to 16 carbon atoms, more preferably a mixture having 12 to 14 carbon atoms. Further, the average addition molar number of ethylene oxide is from 0.5 to 10, more preferably from 1 to 8, and particularly preferably from 2 to 5.

Further, examples of X include an alkali metal such as a hydrogen atom, sodium or potassium; ammonium; an ammonium derived from an alkanolamine such as monoethanolamine, diethanolamine or triethanolamine; and a basic amine derived from arginine or lysine. a cation of a base acid or the like.

The component (A) may be used singly or in combination of two or more. The component (A) is easy to foam during massage, and forms a white film uniformly containing bubbles on the skin surface together with the following components (C) and (D). The skin cosmetic of the present invention has a content of the component (A) of 0.9% by weight or more, preferably 1.8% by weight, from the viewpoint of water resistance, detergency, massage property and skin cleansing property of the film. The above is 13.5% by weight or less, preferably 9.0% by weight or less. When the viewpoint is summarized, the content of the component (A) in the skin cosmetic of the present invention is 0.9 to 13.5% by weight, preferably 1.8 to 9.0% by weight.

<ingredient (B)>

As the oil agent of the component (B) used in the present invention, an oil agent commonly used for massage cosmetics or skin care products can be used, and specific examples thereof include petrolatum, liquid mineral oil, polyolefins, alkanes, and crystallites. a mineral oil such as wax or paraffin; for example, a polyoxygenated oil such as hydrazine, cyclopylindole, alkyl oxazane, polymethyl siloxane, methyl phenyl polyoxyalkylene; for example, lanolin and derivatives thereof; Castor oil, cottonseed oil, groundnut oil, corn oil, rice bran oil, rice germ oil, olive oil, almond oil, palm oil, sesame oil, evening primrose oil, safflower oil, Vegetable oils such as avocado oil, coconut oil, jojoba oil or derivatives thereof, glycerides such as caprylic/capric acid glycerides, myristic acid/glyceryl stearate; for example, isopropyl myristate, palmitic acid An ester of an alcohol and a fatty acid, such as propyl ester, isooctyl palmitate, 2-ethylhexyl stearate, butyl stearate, myristyl myristate, isopropanolate or the like. Among these, by providing a good skin care effect, improving the affinity between the oil and the skin, and obtaining an excellent effect of softening the skin, it is preferably a glyceride, and an alcohol and a fatty acid. The ester formed is more preferably a glyceride.

Further, the oil agent of the component (B) does not contain the following components (F) a linear aliphatic alcohol having a carbon number of 14 to 18 and a component (G) a linear fatty acid having 14 to 18 carbon atoms.

The component (B) can be used singly or in combination of two or more. In the skin cosmetic of the present invention, the content of the component (B) is 3.0% by weight or more, preferably from the viewpoint of removing the dirt on the surface of the skin and imparting the softness and moisturizing effect on the skin. 5.0% by weight or more and 40.0% by weight or less, preferably 30.0% by weight or less. When the viewpoint is summarized, the content of the component (B) in the skin cosmetic of the present invention is 3.0 to 40.0% by weight, preferably 5.0 to 30.0% by weight.

<ingredient (C)>

As the component (C) of the triterpene used in the present invention, ECHO GUM T, KELDENT (manufactured by DSP GOKYO FOOD & CHEMICAL Co., Ltd.) can be cited as a commercially available product.

With the ingredient (C), the skin cosmetic is easily spread on the surface of the skin when applied to the skin. Further, by using it in combination with the component (A), if massage is performed, air bubbles are wound up to form a film containing bubbles.

Uniformity and stability of the film formed by entrapment of air bubbles during massage In the skin cosmetic of the present invention, the content of the component (C) in the skin cosmetic of the present invention is 0.3% by weight or more, preferably 0.4% by weight or more, and 1.9% by weight or less, preferably 1.2. Below weight%. When the viewpoint is summarized, the content of the component (C) in the skin cosmetic of the present invention is from 0.3 to 1.9% by weight, preferably from 0.4 to 1.2% by weight.

<ingredient (D)>

The component (D) acrylic polymer used in the present invention is a general term for a polymer containing acrylic acid or methacrylic acid as a constituent unit, and may be either a crosslinked type or a non-crosslinked type. A crosslinked polymer is preferred. For example, an alkyl-modified acrylic polymer or a non-modified acrylic polymer can be used. Further, various commercially available products can be used, for example, as (acrylic (ester)/C10-30 alkanol acrylate) crosslinked polymer, and CARBOPOL ET D2020 (BE), PEMULEN TR-1, PEMULEN TR-2 ( Lubrizol Advanced Materials, Inc., etc., as carbomer, CARBOPOL 980 POLYMER (BE), CARBOPOL 981 (BE) (manufactured by Lubrizol Advanced Materials, Inc.), etc., as (acrylic acid esters/CETETH- The 20 methacrylate copolymer may, for example, be ACULYN 22 POLYMER (The Dow Chemical Company) or the like, and may be exemplified by NOVETHIX L-10 Polymer (acrylic acid ester (sorbent methacrylate-2) copolymer). Lubrizol Advanced Materials, manufactured by Inc., etc., as a (acrylic (ester)/isostearic acid) crosslinked polymer, such as Stabylen 30 (manufactured by 3V SIGMA), etc., as a polyacrylate-6 cross-linking polymerization For example, SEPIMAX ZEN (manufactured by SEPPIC) can be cited. Among these, an acrylate/C10-30 alkanol acrylate and a carbomer are preferable, and an acrylate/C10-30 alkanol acrylate is more preferable.

Ingredients (D) can improve the massage of skin cosmetics, and make skin when massaged. The skin cosmetic material exerts the force of grasping the skin, makes the skin cosmetic material not easy to slip, and can improve the uniformity of the film.

The component (D) may be used alone or in combination of two or more. The skin cosmetic of the present invention is improved in terms of the massageability of the cosmetic material, the force of seizure during the massage, the difficulty in slipping, and the uniformity, stability, and water resistance of the formed film. The content of the component (D) is 0.35% by weight or more, preferably 0.6% by weight or more, and 1.5% by weight or less, preferably 1.0% by weight or less. In the case of the skin cosmetic of the present invention, the content of the component (D) is from 0.35 to 1.5% by weight, preferably from 0.6 to 1.0% by weight.

Further, in order to have an appropriate viscosity, the liquidity of the massage is easy, the stability of the agent, and the prevention of liquid dripping during application or after the massage, the total content of the component (C) and the component (D) [(C) +(D)] is 0.8% by weight or more, preferably 1.2% by weight or more, 3.0% by weight or less, and preferably 2.0% by weight. When these viewpoints are summarized, the skin cosmetic of the present invention has a content of 0.8 to 3.0% by weight, preferably 1.2 to 2.0% by weight.

Moreover, the total content of the component (C) and the component (D) is relative to the component (A) in terms of the speed at which the film is formed, the uniformity of the film, and the ease of washing during the massage. The ratio of the content [((C) + (D)) / (A)]) is from 0.18 to 3.33.

Further, the ratio (C)/(D) of the content of the component (C) to the component (D) is 0.25 or more, preferably 0.5 or more, and is 3 in terms of the fact that the cosmetic material during massage is not easily slipped. Hereinafter, it is preferably 1.5 or less, more preferably 0.7 or less. If these viewpoints are summarized, the skin cosmetic of the present invention has a 0.25 to 3.0, preferably 0.5 to 1.5, more preferably 0.5 to 0.7.

<ingredient (E)>

Examples of the component (E) water used in the present invention include deionized water, distilled water, high-purity water, and ultra-high-purity water.

In the cosmetic of the present invention, the content of the component (E) is a residual amount excluding the contents of the above components (A) to (D) and the following components (F), (G) and other components (the whole is set to 100). weight%).

<ingredient (F)>

The skin cosmetic of the present invention may further contain a linear (F) carbon number of 14 to 18 in terms of the speed at which the bubble is formed during the massage to form a film, and the stability and uniformity of the film. Aliphatic alcohol.

As the component (F) having a carbon number of 14 to 18 as the component used in the present invention, tetradecyl alcohol (myristyl alcohol), pentadecyl alcohol, cetyl alcohol (cephtanol), and ten Decitol, stearyl alcohol (stearyl alcohol). Among them, myristyl alcohol, cetyl alcohol, and stearyl alcohol are preferred.

The component (F) may be used alone or in combination of two or more. The skin cosmetic of the present invention has a content of the component (F) of 1.0% by weight or more, preferably 3.0, in terms of the speed at which the film is formed to form a film, and the stability and uniformity of the film. The weight% or more is 10.0% by weight or less, preferably 5.0% by weight or less. When the viewpoint is summarized, the content of the component (F) in the skin cosmetic of the present invention is 1.0 to 10.0% by weight, preferably 1.0 to 5.0% by weight, more preferably 3.0 to 5.0% by weight.

<Component (G)>

The speed at which the bubble is wound into the film to form a film, and the stability of the film, In terms of the uniformity, the skin cosmetic of the present invention may further contain a component (G) a linear fatty acid having 14 to 18 carbon atoms.

The component (G) as a linear fatty acid having 14 to 18 carbon atoms used in the present invention may, for example, be myristic acid (C14), pentadecanoic acid (C15), palmitic acid (C16), heptadecanoic acid (C17), or hard. Fatty acid (C18). Among them, myristic acid, palmitic acid, and stearic acid are preferred.

The component (G) may be used singly or in combination of two or more. The skin cosmetic of the present invention has a content of the component (G) of 1.0% by weight or more, preferably 3.0, in terms of the speed at which the film is formed to form a film, and the stability and uniformity of the film. The weight% or more is 10.0% by weight or less, preferably 7.5% by weight or less. When the viewpoint is summarized, the content of the component (G) in the skin cosmetic of the present invention is 1.0 to 10.0% by weight, preferably 3.0 to 7.5% by weight.

<Other ingredients>

Further, the skin cosmetic of the present invention may contain, in addition to the above components, a component used in a usual skin cosmetic, such as a surfactant other than the component (A), a moisturizing agent, or the like, without affecting the effects of the present invention. A whitening agent, a blood circulation promoter, an anti-inflammatory agent, a bactericide, a UV absorber, a coloring agent, a preservative, an antioxidant, a fragrance, a pH adjuster, a chelating agent, and the like.

Examples of the surfactant other than the component (A) include alkyl sulfates such as polyoxyethylene lauryl ether sulfate and polyoxyethylene lauryl ether ammonium sulfate; fatty acids such as lauric acid, myristic acid, and palmitic acid; Glycosides and the like.

The surfactant other than the component (A) accounts for 50% by weight or less, preferably 25% by weight or less, more preferably 25% by weight or less, from the viewpoint of stability of the skin cosmetic, moisturizing property and cleansing property. 10% by weight or less, and more preferably 1% by weight % or less is particularly preferably 0.1% by weight or less, and most preferably substantially not contained.

The skin cosmetic of the present invention can be produced by a conventional method and can be produced as an O/W type emulsified cosmetic. The skin cosmetic of the present invention has a viscosity at 30 ° C of 79 dPa. Above s, preferably 90dPa. s, and is 3200dPa. Below s, preferably 1000dPa. s. If these viewpoints are summarized, the viscosity of the skin cosmetic of the present invention at 30 ° C is 79 to 3200 dPa. s, preferably 90 to 1000 dPa‧s. If it is in this range, the skin cosmetic is not easily dripped after application to the skin, and is easily smeared on the skin during massage, and becomes easy to rinse. Further, when it is filled in a package such as a pipe or a pump, it can be easily extruded without remaining.

Further, in the present invention, the viscosity is a value measured at 30 ° C by VISCOMETER TVB-10 (manufactured by Toki Sangyo Co., Ltd.).

The skin cosmetic of the present invention can be used as a skin cleansing agent, a massage bathing agent, a facial mask and the like.

The skin cosmetic of the present invention can be applied to the skin, preferably by removing the scalp, and more preferably as a face, a body, a hand or a foot.

<Skin care method>

In any case, skin care can be achieved by applying the skin cosmetic of the present invention to the skin, massaging, and rinsing with water.

Specifically, the cosmetic of the present invention can be used during bathing, or can be used outside of bathing, and is preferably used during bathing. At the time of use, the skin cosmetic is applied to the skin and massaged to thereby entrap the air bubbles. The skin cosmetic spreads evenly over the skin to form a film that exhibits a white appearance. Thereafter, rinse immediately with water, or leave it on the skin for a given period of time, rinse, cleanse the skin, and get good Skin care effect. Further, the massage can be performed directly by hand or by using a prop such as a sponge.

Further, specifically, the cosmetic of the present invention can be used during bathing, or can be used outside of bathing, and is preferably used during bathing. At the time of use, the skin cosmetic is applied to the skin and massaged to thereby entrap the air bubbles. The skin cosmetic spreads evenly over the skin to form a film that exhibits a white appearance. Thereafter, immediately after rinsing with water or keeping it on the skin for a predetermined period of time, preferably for 1 to 600 seconds, more preferably for 10 to 300 seconds, and preferably for 50 to 300 seconds, then rinsing is performed. The skin is cleaned and a good skin care effect is obtained. Further, the massage can be performed directly by hand or by using a prop such as a sponge.

Further, the present invention provides a method of applying the skin cosmetic of the present invention to the skin and washing it. In particular, the present invention provides a washing method in which the skin cosmetic of the present invention is applied to the skin, the skin cosmetic is applied to the skin, and washed with water. Furthermore, the present invention provides a skin cosmetic of the present invention applied to the skin, and the skin cosmetic is wiped off the skin for a desired period of time, preferably for 1 to 600 seconds, more preferably for 10 to 300 seconds. Further, it is preferably a washing method in which the washing is performed by washing with water after holding for 50 to 300 seconds.

Further, there is provided a method of applying the skin cosmetic of the present invention to the skin and imparting moisturization to the skin.

In the above embodiment, the preferred embodiments of the present invention are further disclosed below.

<1>

A skin cosmetic containing the following ingredients (A) to (E): (A) alkyl ether carboxylic acid or its salt 0.9 to 13.5% by weight (B) oil agent 3.0 to 40.0% by weight (C) trisin 0.3 to 1.9% by weight (D) acrylic polymer 0.35 to 1.5% by weight ( E) water, the total content of the components (C) and (D) [(C) + (D)] is 0.8 to 3.0% by weight, and the total content of the components (C) and (D) is relative to the weight of the component (A) The ratio [((C)+(D)))/(A)]) is 0.18 to 3.33, and the content ratio of the component (C) to the component (D) is [(C)/(D)] is 0.25 to 3.0.

<2>

For example, the skin cosmetic of <1>, wherein the oil of the component (B) is a component (F) a linear aliphatic alcohol having a carbon number of 14 to 18 and a component (G) an oil other than a linear fatty acid having a carbon number of 14 to 18. Agent.

<3>

The skin cosmetic of <1> or <2>, wherein the alkyl group of the component (A) has a carbon number of 10 to 18, preferably 12 to 16, more preferably 12 to 14.

<4>

The skin cosmetic according to any one of <1> to <3>, wherein the content of the component (A) is preferably from 1.8 to 9.0% by weight.

<5>

A skin cosmetic according to any one of <1> to <4>, wherein the content of the component (B) It is preferably 5.0 to 30.0% by weight.

<6>

The skin cosmetic according to any one of <1> to <5, wherein the content of the component (C) is preferably from 0.4 to 1.2% by weight.

<7>

The skin cosmetic according to any one of <1> to <6>, wherein the content of the component (D) is preferably from 0.6 to 1.0% by weight.

<8>

The skin cosmetic according to any one of <1> to <7>, wherein the total content of the component (C) and the component (D) [(C) + (D)] is preferably from 1.2 to 2.0.

<9>

The skin cosmetic according to any one of <1> to <8>, wherein the content ratio (C)/(D) of the component (C) to the component (D) is preferably 0.5 to 1.5, more preferably 0.5 to 0.5. 0.7.

<10>

The skin cosmetic according to any one of <1> to <9> further comprising a component (F) a linear aliphatic alcohol having 14 to 18 carbon atoms.

<11>

a skin cosmetic such as <10>, wherein the above component (F) is selected from the group consisting of myristyl alcohol and whale One or more of wax alcohol and stearyl alcohol.

<12>

The skin cosmetic of <10>, wherein the content of the component (F) is from 1.0 to 10.0% by weight, preferably from 1.0 to 5.0% by weight, more preferably from 3.0 to 5.0% by weight.

<13>

The skin cosmetic according to any one of <1> to <12, which further comprises a component (G) a linear fatty acid having 14 to 18 carbon atoms.

<14>

The skin cosmetic according to <13>, wherein the component (G) is one or more selected from the group consisting of myristic acid, palmitic acid, and stearic acid.

<15>

The skin cosmetic of <13>, wherein the content of the component (G) is 1.0 to 10.0% by weight, preferably 3.0 to 7.5% by weight.

<16>

The skin cosmetic according to any one of <1> to <15>, wherein the viscosity at 30 ° C is 79 to 3200 dPa. s, preferably 90~1000dPa. s.

<17>

A skin care method which will be skin-derived according to any one of <1> to <16> The makeup is applied to the skin and washed with a massage.

<18>

A skin care method which applies the skin cosmetic according to any one of <1> to <16> to the skin, massages it, and washes it on the skin for a predetermined period of time.

<19>

A skin care method, which applies the skin makeup of any one of <1> to <16> to the skin, massages, and after maintaining the skin for a predetermined period of time, preferably for 1 to 600 seconds, more preferably It is kept for 10 to 300 seconds, and it is preferably kept for 50 to 300 seconds, and then washed.

<20>

A cleaning method which applies the skin cosmetic according to any one of <1> to <16> to the skin and washes it.

<21>

A method of applying a skin cosmetic according to any one of <1> to <16> to the skin, smearing the skin cosmetic onto the skin, and rinsing with water.

<22>

The present invention provides a method of applying a skin cosmetic according to any one of <1> to <16> to the skin, and smearing the skin cosmetic on the skin for a desired period of time, preferably maintaining 1 to 600 seconds, more preferably 10 to 300 seconds, and preferably 50 to 300 seconds, rinse with water.

<23>

The present invention provides a method of applying a skin cosmetic according to any one of <1> to <16> to the skin to moisturize the skin.

[Example 1]

Hereinafter, the present invention will be described in detail by way of examples and comparative examples. However, the invention is not limited to the following examples. Further, the amount of each component is % by weight.

[Examples 1 to 68, Comparative Examples 1 to 12]

The skin cosmetic of the composition shown in Tables 1 to 12 was produced by the following production method, and the viscosity of the skin cosmetic, the massage property, and the film which engulfed the air with the wide appearance formed during the massage were evaluated on the basis of the following evaluation criteria. (White film), and the water resistance of the film. The results are shown in Tables 1 to 12.

<Manufacturing method>

First, the component (C) is dispersed in a part of the component (E) by a high-speed stirrer at room temperature to form a phase B. Further, the component (D) is dispersed in the remaining component (E) by a high-speed stirrer to form the phase A. Further, the component (A), the component (B), and optionally the component (F) and/or the component (G) are mixed at 70 to 80 ° C to form a phase C.

Thereafter, L-arginine and other components such as sodium hydroxide were added to the phase A, and the mixture was mixed at 70 to 80 ° C for 20 minutes at 200 rpm. Next, phase B was added to phase A and mixed under the same conditions for 10 minutes. Thereafter, the phase C was mixed in the phase A and mixed under the same conditions for 20 minutes. Finally, the mixture was cooled to room temperature with ice water to obtain an O/W type emulsified composition, and the skin cosmetics for the examples and the comparative examples were prepared.

<Viscometry>

The measurement conditions of the viscosity are as follows.

The sample was placed in a thermostat at a temperature of 30 ° C: 30 ° C ± 1 ° C for 1 hour, and then measured.

Viscometer: VISCOMETER TVB-10 (manufactured by Toki Sangyo Co., Ltd.)

Use Helipath bracket

Rotor revolutions: T-B/5rpm

Measurement time: 1 minute

<Evaluation criteria> Massage

1 g of the skin cosmetic sample was placed on the nail of the hand of the hand, and the massage was performed by a finger massager, and a professional inspector was used as the evaluator, and each sample was scored 1 to 5 on the basis of the following criteria. The two items of "Ease of Easiness" and "Ease of Massage without Sliding" were scored separately to comprehensively evaluate the massage of skin cosmetics.

(1) easy to open

5: Very easy to smear.

4: Easy to smear.

3: Both are not.

2: Not easy to smear.

1: Very difficult to wipe open.

(2) The ease of massage caused by no slip

5: No surface slipping, easy to massage.

4: No surface slipping, easy to massage.

3: Slightly slippery surface, but easy to massage.

2: There is a slippery surface and it is not easy to massage.

1: quite slippery surface, not easy to massage.

2. <Entrap the air into the film formed during massage>

The following methods were used to evaluate the "formation speed (seconds)", "uniformity", and "stability" of the skin cosmetic composition during the massage to cause air to be entangled in the film, and comprehensively evaluate the skin cosmetic material for massage. The film formed at the time.

(1) Film formation speed (seconds)

1 g of the skin cosmetic sample was placed on the nail of the hand of the object, and the skin was massaged at 1.5 weeks/second by the finger pad, and the appearance of the film formed by entraining the bubble after the start of the massage was recorded, and the appearance of the film formed was not more. Time until white (unit: second).

(2) Uniformity of the film

1 g of the skin cosmetic sample was placed on the nail of the hand of the object, and the skin was massaged at 1.5 weeks/second for 45 seconds by the finger pad, and the bubble was wound up to form a film. Then, one professional inspector was used as the evaluator, and the following criteria were used. The appearance of the film was visually observed, and each sample was scored at 1 to 5 points.

5: The film is milky white and the material is very uniform and fine.

4: The film is milky white, and the material is uniform and small.

3: The film is slightly milky white and the material is slightly thicker.

2: The film is slightly milky white and the material is thick.

1: The film is not milky white and the material is very thick.

(3) Stability of the film containing bubbles

1 g of the skin cosmetic sample was placed on the nail of the hand of the object, and the skin was massaged at 1.5 weeks/second for 45 seconds by the finger pad, and the bubble was wound up to form a film, and then held on the nail for 5 minutes, by a professional function. The inspector was the evaluator, and secondly, the appearance of the film was visually observed on the basis of the following criteria, and each sample was scored at 1 to 5 points.

5: The film is highly persistent and maintains a white appearance.

4: The film is highly persistent and basically maintains a white appearance.

3: The persistence of the film is not high, and the white appearance slightly changes.

2: The film is less persistent and the white appearance changes greatly.

1: The film disappeared, the white appearance disappeared, and liquid dripped.

3.<Water resistance of the film>

The item "resistance to water of the film" formed during the massage of the skin cosmetic was evaluated by the following method, and the water resistance of the film formed by the skin cosmetic during the massage was comprehensively evaluated.

(1) The resistance of the film to water

1 g of the skin cosmetic sample was placed on the nail of the hand of the object, and massage was performed for 1.5 seconds at 1.5 weeks/second with the finger pad, and the bubble was wound up to form a film. Thereafter, 100 ml of water at 30 ° C was injected for 15 seconds. A professional inspector is the evaluator with the following basis The white appearance of the film was visually observed, and each sample was scored at 1 to 5 points.

5: The film was stably held. Continue to maintain a white appearance.

4: The film is held. Basically maintain a white appearance.

3: The appearance of the film slightly changed. The white appearance changes slightly.

2: One part of the film flows. The white appearance changes greatly.

1: The outline of the film disappears and there is a trace of the film flowing. The white appearance disappeared and liquid dripped.

According to Table 1, it is understood that the skin cosmetic of the comparative example does not contain at least one of the component (A), the component (C), or the component (D), and therefore the film formed by entraining the bubble during massage is formed. The evaluation of the water resistance of the film was inferior to the examples in all the items.

According to Table 2 to Table 4, the total content of the component (C) and the component (D) [(C) + (D)], or the total of the components (C) and the component (D) in the skin cosmetic of the comparative example is known. The content ratio of the content to the component (A) [((C)+(D)))/(A)) is outside the range of the present invention, and therefore, the film and the film formed by entraining bubbles during massage are involved. The evaluation of water resistance is inferior to the examples in all projects.

Moreover, it is understood that the total content of the component (C) and the component (D) [(C) + (D)], or the content of the component (C) and the component (D) is proportional to the content of the component (A) [ ((C)+(D))/(A)] In the case of a skin cosmetic in the range of the present invention, excellent massageability can be obtained, and bubbles can be wound up during massage to form an excellent film, and a film is formed. Excellent water resistance.

According to Table 4, when the content of the component (D) is used as the skin cosmetic in the range of the present invention, excellent massage property can be obtained, and the bubble can be wound up during the massage to form an excellent film, and the film is formed. Excellent water resistance.

Further, when the content of the component (D) is within the preferred range of the present invention, more excellent massage properties, uniformity of the film, stability, and resistance of the film to water can be obtained.

According to Table 5, it is understood that the content of the component (A) in the skin cosmetic of the comparative example is outside the range of the present invention, and therefore, the water resistance of the film and the film formed by entraining the bubble during the massage is not included. The evaluation of one item is all worse than the example.

In addition, when the component (A) is used as a skin cosmetic in the range of the present invention, it is understood that excellent massage properties can be obtained, and bubbles can be wound up during massage to form an excellent film, and the film is excellent in water resistance. .

According to Table 6, it is understood that when the content of the component (B) is used as the skin cosmetic in the range of the present invention, excellent massage properties can be obtained, and the bubble can be wound up during the massage to form an excellent film, and the film can be formed. Excellent water resistance.

Further, when the content of the component (B) is within the preferred range of the invention, more uniform film uniformity and water resistance of the film can be obtained.

According to Table 7, it is understood that when the content of the component (C) is used as the skin cosmetic in the range of the present invention, the uniformity and stability of the film are excellent.

Further, when the component (C) is in the preferred range of the present invention, more uniform film uniformity, stability, and water resistance of the film can be obtained.

According to Table 8, in the skin cosmetic of the comparative example, the content ratio (C)/(D) of the component (C) to the component (D) is outside the range of the present invention, so that the foaming property is caused by the massage property during the massage. The evaluation of the water resistance of the film formed by the entrapment and the film was inferior to the examples in all the items.

Further, when the content ratio (C)/(D) of the component (C) to the component (D) is used as the skin cosmetic in the range of the present invention, the cosmetic does not slip during the massage, and the air is made during the massage. The speed at which the film formed is formed is increased, and the uniformity and stability of the formed film and the water resistance of the film are excellent.

According to Table 9, it is understood that the component (D) acrylic polymer can be usually used in the skin cosmetic of the present invention, and excellent massage properties can be obtained, and bubbles can be wound up during massage to form an excellent film, and the film is water resistant. Excellent strength. In the skin cosmetic of the present invention, when acrylic acid/C10-30 alkanol acrylate crosslinked polymer or carbomer is used, the uniformity of the film formed by entraining the bubble during massage is more uniform. Excellent.

According to Table 10, it is understood that the skin cosmetic of the present invention further contains the component (F) and/or the component (G) to improve the skin cosmetic of the present invention during massage. The air is entangled in the speed of the formed film and the stability of the film.

According to Table 11, it is understood that the skin cosmetic of the present invention further contains the component (F), thereby improving the speed at which the air cosmetic film of the present invention is entangled in the formed film during massage and the stability of the film. In the skin cosmetic of the present invention, when the component (F) is in a preferred range, a faster film formation rate and a more excellent film stability can be obtained.

According to Table 12, it is understood that the skin cosmetic of the present invention further contains the component (G), thereby improving the speed at which the air cosmetic film of the present invention is wound into the film formed during massage and the stability of the film.

Further, in the skin cosmetic of the present invention, when the component (G) is in a preferred range, a faster film formation rate and a more excellent film stability can be obtained.

(Note) The components in Tables 1 to 12 are the following.

Polyoxyethylene (5) lauryl ether carboxylic acid ^{* 1} : AKYP 1984520 RLM 45 CA (90%), manufactured by Kao Chemicals mbH.

Caprylic/octanoic acid/capric triglyceride ^{* 2} : COCONAD MT, manufactured by Kao Corporation.

Sanxianjiao ^{* 3} : manufactured by ECHO GUM T, DSP GOKYO FOOD & CHEMICAL Co., Ltd.

Acrylate/C10~30 Alkanol Acrylate Crosslinked Polymer 1) ^{* 4} : Manufactured by CARBOPOL ETD2020 (BE), Lubrizol Advanced Materials, Inc.

Acrylate/C10~30 Alkanol Acrylate Crosslinked Polymer 2) ^{* 5} : Manufactured by PEMULEN TR-1 Lubrizol Advanced Materials, Inc.

Acrylate/C10~30 Alkanol Acrylate Crosslinked Polymer 3) ^{* 6} : PEMULEN TR-2 Lubrizol Advanced Materials, Inc.

Carbomer 1) ^{* 7} : Manufactured by Carbopol 980, Lubrizol Advanced Materials, Inc.

Carbomer 2) ^{* 8} : Manufactured by Carbopol 981, Lubrizol Advanced Materials, Inc.

Acrylate/stearyl ether-20 methacrylate copolymer ^{* 9} : Aculyn 22 (30%), manufactured by The Dow Chemical Company.

Acrylate/Behen Polyether-25 Methacrylate Copolymer ^*10 : NOVETHIX L-10 (40%), manufactured by Lubrizol Advanced Materials, Inc.

Acrylate/vinyl stearate crosslinked polymer ^{* 11} : manufactured by Stabylen 30, 3V SIGMA.

Polyacrylate-6-6 crosslinked polymer ^{* 12} : manufactured by SEPIMAX ZEN, SEPPIC.

Myristyl ^{* 13} : KALCOL 4098, manufactured by Kao Corporation.

Cetyl alcohol ^{* 14} : CETYL ALCOHOL NX, manufactured by Kokyu Alcohol Kogyo Co., Ltd.

Stearyl alcohol ^{* 15} : manufactured by STEARYL ALCOHOL NX, Kokyu Alcohol Kogyo Co., Ltd.

Myristic acid ^{* 16} : manufactured by PALMAC 98-14, ACIDCHEM INTERNATIONAL SDN. BHD.

Palmitic acid ^{* 17} : manufactured by PALMAC 98-16, ACIDCHEM INTERNATIONAL SDN.BHD.

Stearic acid ^{* 18} : PALMAC 98-18, manufactured by ACIDCHEM INTERNATIONAL SDN. BHD.

Claims (10)

A skin cosmetic comprising the following components (A) to (E): (A) an alkyl ether carboxylic acid or a salt thereof, 0.9 to 13.5% by weight; (B) an oil agent, 3.0 to 40.0% by weight; (C) Sanxian 0.3 to 1.9% by weight of the rubber; (D) 0.35 to 1.5% by weight of the acrylic polymer; (E) water; the total content (C) + (D) of the components (C) and (D) is 0.8 to 3.0% by weight, The weight ratio of the total content of the components (C) and (D) to the component (A) ((C) + (D)) / (A) is 0.18 to 3.33, and the content of the component (C) relative to the component (D) The ratio [(C)/(D)] is 0.25~3.0. The skin cosmetic of claim 1, wherein the oil component of the component (B) is a component (F) a linear aliphatic alcohol having a carbon number of 14 to 18, and a component (G) a linear fatty acid having a carbon number of 14 to 18 Oil agent. The skin cosmetic of claim 1, wherein the alkyl group of the component (A) has a carbon number of 10 to 18. The skin cosmetic of claim 1, which further comprises a component (F) a linear aliphatic alcohol having 14 to 18 carbon atoms. The skin cosmetic of claim 4, wherein the content of the component (F) is 1.0 to 10.0% by weight. The skin cosmetic of claim 1, which further comprises a component (G) a linear fatty acid having 14 to 18 carbon atoms. The skin cosmetic according to claim 6, wherein the content of the component (G) is 1.0 to 10.0% by weight. The skin cosmetic of claim 1, wherein the viscosity at 30 ° C is 79 to 3200 dPa. s. A skin care method which applies the skin cosmetic of any one of claims 1 to 8 to the skin, massages and washes. A skin care method which applies the skin cosmetic of any one of claims 1 to 8 to the skin, massages it, and washes it on the skin for 1 to 300 seconds.