JP2006240993A - Bath agent - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bath agent excellent in dispersing property, effect for clouding hot water and the effect of stabilizing the white cloudiness of the hot water, without showing stickiness of a skin during and after taking bath, obtaining the smoothness of the skin and also excellent in preservation stability. <P>SOLUTION: This bath agent contains (a) liquid paraffin or liquid isoparaffin having 200-350 average molecular weight, (b) liquid paraffin or liquid isoparaffin having 480-600 average molecular weight, (c) a nonionic surfactant and (d) water soluble magnesium salt so as to become (4/1)-(30/1) mass ratio of the (a) to (b), (a)/(b), also 20-60 mass% total amount of the (a) and (b), 1-20 mass% amount of the (c) and 0.1-15 mass% amount of the (d). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bath agent, and more particularly, has excellent dispersibility in hot water, an effect of clouding hot water, and stability of hot water cloudiness, and the skin does not become sticky during and after bathing, and there is sufficient smoothness of the skin. The present invention relates to an emulsified bath agent that is obtained and excellent in storage stability.

  Bathing is an indispensable action in daily life, with various effects such as cleansing the body, warming not only the limbs but also the core, and mentally relaxing. However, on the other hand, many people complain of oil loss from the skin due to bathing, especially the skin roughness after bathing in winter. Therefore, in order to suppress the roughness of the skin after bathing, applying lotion or cream after bathing is performed. However, lotions and creams require time and effort and are difficult to apply to every corner of the body.

  In order to solve the above problems, bathing agents containing oily components and humectants are used. Since bathing agents can be used for skin care during bathing, they have the advantage that they can be applied to all corners of the whole body, compared to lotions and creams, with less time and effort to apply.

  By the way, the bathing agent usually contains an oily component from the viewpoint of suppressing the roughness of the skin after bathing. For example, an oil bath is known as such a bath agent. However, since the oil bath is used by floating an oily component in the bathtub, the effect of suppressing the roughness of the skin is limited only to the oil layer portion. Therefore, as a result of requiring a large amount of oil bath to obtain the above effect, there is a problem that oily components adhere to the skin more than necessary during bathing and feel sticky. In addition, there are problems such as dirtying the bathtub and poor appearance due to the oily component floating in the bathtub.

  Therefore, in order to improve the above-mentioned problem, an emulsified bath agent has been proposed. For example, Patent Document 1 discloses a bath agent in which an oil component, a nonionic surfactant of HLB 8 to 14 and a pigment are combined in a specific ratio. This bathing agent is described as having a storage stability and dispersibility in hot water so that the composition becomes milky white after remaining in a bathtub with a slight color. Patent Document 2 discloses a bath agent having a high temperature stability of a stock solution and durability of white turbidity, which is a combination of a specific nonionic surfactant, a polyhydric alcohol, an oil component, and water in a specific ratio. Has been. However, although these bath preparations can obtain a spiritual relaxation from a luxury like a milk bath by making the bathtub cloudy, sufficient white turbidity cannot be obtained in a bathtub using a bath preparation. There is.

On the other hand, from the viewpoint of obtaining sufficient turbidity, Patent Document 3 contains liquid paraffin having a kinematic viscosity of 25.00 to 76.00 cSt (= mm ² / s) at 37.78 ° C. and a surfactant. However, this bath agent is insufficient in terms of dispersibility and stability of white turbidity of the hot water, and has a feeling of stickiness on the skin during and after bathing, and a smooth feeling of the skin. There is a problem that is insufficient.

Therefore, an emulsified bath agent that provides sufficient white turbidity, is excellent in dispersibility and stability of the white turbidity of hot water, does not stick to the skin during and after bathing, and provides a smooth skin feeling is desired. ing.
Japanese Patent Laid-Open No. 6-92839 JP-A-11-189526 JP 2001-139457 A

  The object of the present invention is excellent in dispersibility, the effect of clouding hot water, and the stability of hot water cloudiness, the skin does not become sticky during and after bathing, a sufficient smooth feeling of the skin is obtained, and the storage stability is improved. The object is to provide an excellent bath agent.

  The inventors of the present invention have made extensive studies in order to solve the above-mentioned problems, and are obtained by combining at least two kinds of liquid paraffin or liquid isoparaffin having different molecular weights and a nonionic surfactant in a specific ratio. The bathing agent has excellent dispersibility in hot water, the effect of clouding hot water, and the stability of hot water white turbidity, the skin does not become sticky during and after bathing, a sufficient smooth feeling of the skin is obtained, and storage stability As a result, the present invention was completed.

  That is, the bathing agent of the present invention comprises liquid paraffin or liquid isoparaffin (a) having an average molecular weight of 200 to 350, liquid paraffin or liquid isoparaffin (b) having an average molecular weight of 480 to 600, and a nonionic surfactant (c). And a water-soluble magnesium salt (d), and in the composition, the mass ratio (a) / (b) of (a) to (b) is from 4/1 to 30/1. And the total amount of (a) and (b) is 20 to 60% by mass, (c) is 1 to 20% by mass, and (d) is 0.1 to 15% by mass. % Content.

  In preferable embodiment, 0.1-5 mass% of C14-24 monohydric alcohol (e) whose melting | fusing point is 40 degreeC or more is further contained.

  The bathing agent of the present invention is excellent in dispersibility, the effect of making hot water cloudy, and the stability of hot water cloudiness, the skin is not sticky during and after bathing, a sufficient smooth feeling of the skin is obtained, and the storage stability Is excellent.

  The bathing agent of the present invention comprises liquid paraffin or liquid isoparaffin (a) having an average molecular weight of 200 to 350, liquid paraffin or liquid isoparaffin (b) having an average molecular weight of 480 to 600, a nonionic surfactant (c), and It contains water-soluble magnesium salt (d) in a specific ratio, preferably further contains a monohydric alcohol (e) having 14 to 22 carbon atoms having a melting point of 40 ° C. or higher, in a specific ratio. The component (f) may be contained. Hereinafter, each component and bathing agent will be described sequentially.

(Liquid paraffin or liquid isoparaffin: (a) and (b))
One of the essential components of the bath agent of the present invention is liquid paraffin or liquid isoparaffin. Liquid paraffin is a colorless, transparent, tasteless, odorless and highly refined saturated hydrocarbon oil consisting essentially of straight-chain saturated hydrocarbons, such as aromatic hydrocarbons and sulfur contained in petroleum lubricating oil fractions. It can be obtained by removing impurities such as compounds with sulfuric anhydride or fuming sulfuric acid and further purifying it with high purity. Liquid isoparaffin is a hydrocarbon oil consisting essentially of a saturated hydrocarbon having a branched chain, which is colorless and odorless, low in irritation, and excellent in stability over time. For example, a raw material is an olefin having 4 carbon atoms such as isobutene. It is obtained by cationic polymerization and further purification to high purity.

  In the present invention, liquid paraffin or liquid isoparaffin having an average molecular weight of 200 to 350 (hereinafter sometimes referred to as “a” component) and liquid paraffin or liquid isoparaffin having an average molecular weight of 480 to 600 (hereinafter sometimes referred to as “b” component). At least two kinds of liquid paraffin or liquid isoparaffin having different average molecular weights are used. The a component and the b component are not particularly limited as long as each satisfies the above average molecular weight range. These component a and component b may be used alone or in combination of two or more liquid paraffins, or may be used alone or in combination of two or more liquid isoparaffins, or may be fluid. Paraffin and liquid isoparaffin may be used in combination.

The average molecular weights of the a component and the b component can be usually determined based on kinematic viscosity at 40 ° C. For example, the kinematic viscosity of the component a at 40 ° C. may specifically be about 2.0 to 20.0 mm ² / s, and the kinematic viscosity of the component b at 40 ° C. may specifically be about It may be 80.0-140.0 mm < ² > / s. In consideration of the storage stability of the obtained bath preparation, the turbidity of hot water, the smooth feeling of the skin during and after bathing, the kinematic viscosity of the component a at 40 ° C. is about 5.0 to 18.0 mm. ² / s is preferable, and the kinematic viscosity of the b component at 40 ° C. is preferably about 90.0 to 130.0 mm ² / s.

(Nonionic surfactant: (c))
Examples of the nonionic surfactant (hereinafter sometimes referred to as component c) used in the bathing agent of the present invention include polyoxyethylene alkyl ether, polyoxypropylene alkyl ether, polyethylene glycol fatty acid ester, and polyoxyethylene curing. Castor oil, polyoxyethylene castor oil, glycerin fatty acid ester, sorbitan fatty acid ester, propylene glycol fatty acid ester, tetraoleic acid polyoxyethylene sorbit, polyglycerin fatty acid ester and the like are used. These nonionic surfactants may be used alone or in combination of two or more.

  The nonionic surfactant is preferably used in combination with a nonionic surfactant having an HLB of 11 to 18 and a nonionic surfactant having an HLB of 2 to 8. Note that the HLB is obtained by the Griffin equation.

  Examples of the nonionic surfactant having an HLB of 11 to 18 include polyoxyethylene (15 mol) cetyl ether, polyoxyethylene (18 mol) stearyl ether, polyoxyethylene (13 mol) oleyl ether and the like. Ethylene alkyl ether type nonionic surfactant; polyethylene glycol monostearate (12 mol); polyethylene glycol monostearate (20 mol); polyethylene glycol monopalmitate (10 mol); polyethylene glycol monooleate (20 mol) Polyoxyethylene (40 mol) hydrogenated castor oil; polyoleic monooleate (20 mol) sorbitan; polyoxyethylene (7 mol) coconut oil fatty acid glycerin and the like. A polyoxyethylene alkyl ether type nonionic surfactant is particularly preferred from the viewpoint of excellent white turbidity and storage stability of the resulting bath water.

  Examples of nonionic surfactants having HLB of 2 to 8 include sorbitan fatty acid esters such as sorbitan monolaurate, sorbitan monomyristate, sorbitan monopalmitate, sorbitan monostearate; glyceryl monopalmitate, glyceryl monostearate And glycerin monofatty acid esters such as glyceryl monoisostearate. A sorbitan fatty acid ester is more preferable in that the bathing agent obtained has excellent dispersibility in hot water and storage stability.

(Water-soluble magnesium salt: (d))
Examples of the water-soluble magnesium salt (hereinafter sometimes referred to as “d component”) used in the bathing agent of the present invention include magnesium chloride, magnesium sulfate, magnesium nitrate, magnesium aluminum silicate, magnesium L-aspartate, and phosphoric acid L. -Ascorbyl magnesium and the like. Magnesium chloride and magnesium sulfate are preferred. Magnesium chloride is particularly preferred from the viewpoint of enhancing the smoothness of the skin during and after bathing. Substances derived from natural products containing water-soluble magnesium, such as bittern, can be used as water-soluble magnesium salts. These water-soluble magnesium salts can be used alone or in combination of two or more.

(Monohydric alcohol: (e))
The bathing agent of the present invention has a melting point of 40 ° C. or higher and a carbon number of 14 to 24, preferably 14 to 18 monohydric alcohol (hereinafter referred to as “e” component) from the viewpoint of further improving the dispersibility in hot water. It is preferable to contain a certain). Such monohydric alcohol (e) is usually obtained by hydrolysis of whale waxes, high-pressure hydrogen reduction or metal sodium reduction of fatty acids, synthesis from petroleum resources, and the like. Specifically, cetyl alcohol (melting point: 50 ° C.), cetostearyl alcohol (melting point: 58 ° C.), behenyl alcohol (melting point: 78 ° C.) and the like are used. Cetostearyl alcohol is preferred. These monohydric alcohols (e) can be used alone or in combination of two or more. When the melting point is less than 40 ° C., when the carbon number is less than 14, or when the carbon number exceeds 24, the storage stability of the obtained bath agent and the stability of white turbidity of hot water may be deteriorated.

(Other ingredients: (f))
Other components that can be used in the bath agent of the present invention are additives usually used by those skilled in the art for the bath agent, and can be contained within a range not impairing the performance of the bath agent of the present invention. For example, lower alcohols such as ethanol and isopropyl alcohol, polyhydric alcohols such as propylene glycol and dipropylene glycol, moisturizing ingredients such as sugars, amino acids and proteins, natural fats and oils such as beef tallow, pork fat and fish oil, tourmaline, viscosity Mineral substances such as minerals, synthetic triglycerides such as glyceryl tri-2-ethylhexanoate, ester oils such as oleyl oleate and octyldodecyl myristate, waxes such as beeswax and carnauba wax, polyether-modified dimethylpolysiloxane, amino-modified dimethylpoly Silicone derivatives such as siloxane, lanolin, lanolin derivatives, oily bases such as lecithin, anionic surfactants such as soap, acylmethyl taurate, amide ether sulfate, amidopropyldimethylamino vinegar Amphoteric surfactants such as betaine and alkyliminodiacetate, semipolar surfactants such as alkylamine oxide and polyoxyethylene alkylamine oxide, cationic surfactants such as alkyltrimethylammonium chloride and dialkyldimethylammonium chloride, Natural pigments such as chlorophyll and β-carotene, synthetic pigments such as tar pigments, water-soluble polymers such as alginic acid and carboxyvinyl polymer, inorganic or organic salts such as borax and sodium citrate, pH adjusters such as acids and alkalis , Fungicides, preservatives, chelating agents, antioxidants, ultraviolet absorbers, natural extracts derived from animals and plants, vitamins, whitening ingredients, skin protecting ingredients, dechlorinating agents, active oxygen removing ingredients, and fragrances.

(Bath additive)
The bathing agent of the present invention comprises liquid paraffin or liquid isoparaffin (a) having an average molecular weight of 200 to 350, liquid paraffin or liquid isoparaffin (b) having an average molecular weight of 480 to 600, a nonionic surfactant (c), and The water-soluble magnesium salt (d) is contained in a specific ratio, and if necessary, it may contain a monohydric alcohol (e) having 14 to 22 carbon atoms having a melting point of 40 ° C. or higher and other components (f). The bathing agent of the present invention may be a cloudy emulsion type bathing agent.

  The content of component a and component b in the bath agent of the present invention is such that the mass ratio (a) / (b) between component a and component b is 4/1 to 30/1, preferably 6/1 to 20 /. 1 and the total amount of component a and component b is 20 to 60% by mass, preferably 30 to 50% by mass.

  When the mass ratio of the component a and component b is less than 4/1, the dispersibility in hot water and the stability of the white turbidity of the hot water are poor, the skin feels sticky during and after bathing, and the storage stability of the bath agent Also worse. When it exceeds 30/1, the turbidity of hot water using a bath agent and the smooth feeling of the skin during and after bathing are insufficient.

  When the total amount of component a and component b is less than 20% by mass, the turbidity of hot water using a bath agent, the stability of the turbidity of hot water, and the smoothness of the skin during and after bathing are insufficient. is there. Furthermore, the storage stability of the bath agent is also deteriorated. When it exceeds 60% by mass, the dispersibility in hot water and the stability of the white turbidity of the hot water are poor, and the skin feels sticky during and after bathing. Furthermore, the storage stability of the bath agent is also deteriorated.

  Content of c component in the bath agent of this invention is 1-20 mass%, Preferably it is 3-15 mass%. When the amount is less than 1% by mass, the dispersibility in hot water, the turbidity of hot water, and the stability of the white turbidity of the hot water are insufficient, the skin feels sticky during and after bathing, and the smoothness of the skin is insufficient. is there. Furthermore, the storage stability of the bath agent is also deteriorated. When it exceeds 20% by mass, the turbidity of hot water and the smooth feeling of the skin during and after bathing are insufficient.

  Content of d component in the bath agent of this invention is 0.1-15 mass%, Preferably it is 1-10 mass%. When it is less than 0.1% by mass, the smooth feeling of the skin during and after bathing is insufficient. When it exceeds 15% by mass, the stability of the white turbidity of hot water and the storage stability of the bath agent are deteriorated.

  When e component contains in the bath agent of this invention, content of e component becomes like this. Preferably it is 0.1-5 mass%, More preferably, it is 0.3-3 mass%. If it is less than 0.1% by mass, the storage stability and the stability of hot water cloudiness may deteriorate. When the amount exceeds 5.0% by mass, the bathing agent gels and becomes difficult to use, and dispersibility in hot water deteriorates, and the smooth feeling of the skin during and after bathing becomes insufficient. There is. Furthermore, the storage stability of the bath agent itself may be deteriorated.

  When e component contains in the bath agent of this invention, mass ratio (a) / (e) of a component and e component becomes like this. Preferably it is 10 / 1-100 / 1, More preferably, it is 8 / 1-80. / 1. If it is less than 10/1, the bathing agent gels and becomes difficult to use, and the dispersibility in hot water is poor, and the smooth feeling of the skin during and after bathing may be insufficient. Furthermore, the storage stability of the bath agent itself may be deteriorated. When it exceeds 100/1, the storage stability of the preparation and the stability of the white turbidity of hot water may be insufficient.

  The bath agent of the present invention can be obtained by appropriately mixing and emulsifying the above components a to f in the above proportions. For the mixing, for example, a mixture of liquid paraffin and / or liquid isoparaffin such as component a and component b is prepared in advance, and a nonionic surfactant of component c and a water-soluble magnesium salt of component d, and if necessary , E component and f component are added. The emulsification is carried out by using an emulsifying apparatus usually used by those skilled in the art, such as a homomixer and a high-pressure morphogenizer.

In the above mixing it, in the case of pre-preparing a mixture of a component and the b component, kinematic viscosity at 40 ° C. of the mixture is 4~24mm ² / s are preferred, 12 to 20 mm ² / s Is more preferable. In the case of less than 4 mm ² / s, the turbidity of hot water using a bath agent and the smooth feeling of the skin during and after bathing may be insufficient. When it exceeds 24 mm ² / s, the dispersibility in hot water is poor, the skin feels sticky during and after bathing, and the storage stability of the preparation and the stability of the white turbidity of hot water may deteriorate.

  Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to the following examples.

  Each bath preparation prepared in the following Examples and Comparative Examples was evaluated by the following methods (1) to (6).

(1) Dispersibility A total of 20 men, including 12 men (27-45 years old) and 8 women (23-58 years old), are panelists, and 50 mL in a bath containing 180 liters of hot water (about 40 ° C). Put a bath agent and let it bathe. The dispersibility in the bath tub is scored according to the following criteria:
2 points: Disperse quickly after adding bathing agent, and disperse uniformly.
1 point: It takes time to disperse after adding the bathing agent, but it disperses uniformly.
0 point: Even if a bath agent is added, it does not disperse.
If the total score obtained is 30 points or more, the dispersibility is good (◯), and if it is less than 30 points, the dispersibility is insufficient (x).

(2) Hot water turbidity A total of 20 men, including 12 men (27-45 years old) and 8 women (23-58 years old), are panelists in a bathtub containing 180 liters of hot water (about 40 ° C). The following criteria are used to score for the white turbidity when 50 mL of the additive is added:
2 points: Sufficiently cloudy.
1 point: Although it is cloudy, there is a sense of transparency.
0 point: It is almost transparent and white turbidity is insufficient.
If the total score obtained is 30 points or more, the cloudiness is good (◯), and if it is less than 30 points, the cloudiness is evaluated as insufficient (x).

(3) Skin stickiness during and after bathing A total of 20 people of 12 men (27-45 years old) and 8 women (23-58 years old) are panelists and 180 liters of hot water (about 40 ° C) Put 50 mL of the additive into the bath containing, and let it bathe. Scoring the skin during and after bathing is scored according to the following criteria:
2 points: There is no stickiness of the skin during and after bathing.
1 point: The skin feels sticky during and after bathing, but it is within the allowable range.
0 point: The skin feels very sticky during and after bathing.
If the total score obtained is 30 points or more, there is no skin stickiness during and after bathing (○), and if it is less than 30 points, there is skin feeling during and after bathing (×). Evaluate as

(4) Smooth feeling of skin during and after bathing A total of 20 people of 12 men (27-45 years old) and 8 women (23-58 years old) are panelists and 180 liters of hot water (about 40 ° C) Put 50 mL of the additive into the bath containing, and let it bathe. The smoothness of the skin during and after bathing is scored according to the following criteria:
2 points: Sufficient smooth skin feeling can be obtained during and after bathing.
1 point: The skin feels tolerable within and after bathing.
0 point: The skin does not feel smooth during or after bathing.
If the total score obtained is 30 points or more, the smooth feeling of the skin after bathing and after bathing is sufficient (○), and if it is less than 30 points, the smooth feeling of the skin during and after bathing is insufficient. It is evaluated as (×).

(5) Storage stability The bathing agent is stored for 4 weeks under each condition of 5 ° C, 25 ° C and 45 ° C. After completion of storage, the appearance of the bath agent is observed and evaluated according to the following criteria. In addition, if the evaluation is ◎ or ○, the storage stability has no practical problem:
A: Separation and creaming do not occur at any temperature condition.
○: Some separation or creaming occurs at any temperature condition.
X: Separation or creaming is remarkable in any temperature condition.

(6) Stability of cloudiness at the time of use A bathing agent is diluted with ion-exchanged water to prepare an aqueous solution containing 0.05% by mass of the bathing agent. This aqueous solution is placed in a 100 mL screw tube and stored at 45 ° C. for 24 hours. After storage, the appearance of the aqueous solution is observed and evaluated according to the following criteria. In addition, if it is evaluated as ◎ or ○, it has stability that is not problematic in practice:
A: Separation and creaming do not occur.
○: Some separation or creaming occurs.
X: Separation or creaming is remarkable.

(Examples 1-5)
Each component shown in Table 1 was mixed at a ratio shown in Table 1 to obtain a bath agent (bath agents 1 to 5). Using the obtained bathing agents 1 to 5, the dispersibility, the turbidity of hot water, and the stickiness and smoothness of the skin during and after bathing were evaluated by the above test methods (1) to (4). did. The results are shown in Table 1.

(Comparative Examples 1-9)
Each component shown in Table 1 was mixed in the ratio shown in Table 1 to obtain a bath agent (bath agents 6 to 14). Using the obtained bathing agents 6 to 14, the dispersibility, the turbidity of hot water, and the feeling of skin stickiness and smoothness during and after bathing were evaluated by the above test methods (1) to (4). did. The results are also shown in Table 1.

  From the results of Table 1, all of the bath agents of Examples 1 to 5 were highly dispersible and highly effective in causing white turbidity of the hot water. The skin did not become sticky during and after bathing, and a sufficient smooth feeling of the skin was obtained. In Examples 3 and 5, since cetostearyl alcohol (e component) was contained, the dispersibility was particularly good.

  On the other hand, the bathing agents of Comparative Examples 1 to 9 do not satisfy the scope of the present invention, and it is understood that sufficient performance as a bathing agent is not obtained. That is, in Comparative Example 1, since the total amount of component a and component b was low, the white turbidity of hot water was insufficient, and the smooth feeling of the skin during and after bathing was insufficient. In Comparative Example 2, since the total amount of the component a and the component b was high, the dispersibility was poor, and the skin was sticky during and after bathing. In Comparative Example 3, since a / b was low, the dispersibility was poor, and the skin was sticky during and after bathing. In Comparative Example 4, since a / b was high, the white turbidity of hot water was insufficient, and the smooth feeling of the skin during and after bathing was insufficient. In Comparative Example 5, the oil component (n-dodecane) which does not contain the components a and b and has a low average molecular weight is used, so that the white turbidity of hot water is insufficient, and the skin during and after bathing The smooth feeling was insufficient. In Comparative Example 6, since the oil component (liquid isoparaffin) which does not contain the component a and component b and has a high average molecular weight is used, the dispersibility is poor, and the white turbidity of the hot water is insufficient. There was a feeling of stickiness of the skin after bathing, and also the feeling of skin smoothness during and after bathing was insufficient. In Comparative Example 7, since the content of component c is low, the dispersibility is poor, the white turbidity of hot water is insufficient, the skin feels sticky during and after bathing, and the skin after bathing and after bathing The smooth feeling was insufficient. In addition, the oil floated in the bathtub, and the appearance was bad. In Comparative Example 8, since the content of the component c is high, the dispersibility in hot water and the feeling of skin stickiness are acceptable, but the white turbidity of hot water and the feeling of smooth skin during and after bathing are insufficient. there were. In Comparative Example 9, since the d component was not contained, the smooth feeling of the skin during and after bathing was insufficient.

(Examples 6 and 7)
Each component shown in Table 2 was mixed at the ratio shown in Table 2 to obtain bath additives (bath agents 15 and 16). Using the obtained bathing agents 15 and 16, the storage stability and the stability of cloudiness during use were evaluated by the test methods (5) and (6). The results are shown in Table 2.

(Comparative Examples 10-14)
Each component shown in Table 2 was mixed at a ratio shown in Table 2 to obtain a bath agent (bath agents 17 to 21). Using the obtained bathing agents 17 to 21, the storage stability and the stability of cloudiness during use were evaluated by the test methods (5) and (6). The results are shown in Table 2.

  From the results of Table 2, the bathing agents (baths 15 and 16) containing the components a to c of Examples 6 and 7 within the scope of the present invention have both storage stability and stability of cloudiness during use. Are better. Since Example 6 contained the e component, it was particularly excellent in the stability of cloudiness during use.

  On the other hand, in Comparative Examples 10 to 14, sufficient storage stability and white turbidity stability were not obtained. That is, in Comparative Example 10, since the total amount of component a and component b was high, both the storage stability and the stability of cloudiness during use were poor. In Comparative Example 11, since the total amount of component a and component b was low, both the storage stability and the stability of cloudiness during use were poor. In Comparative Example 12, since the ratio of the component a and the component b was low, both the storage stability and the stability of cloudiness during use were poor. In Comparative Example 13, since the content of component c was low, both the storage stability and the stability of cloudiness during use were poor. In Comparative Example 14, since the content of the d component was high, gelation occurred during blending, and both storage stability and stability of cloudiness during use were poor.

  According to the present invention, the dispersibility, the effect of making hot water cloudy, and the stability of hot water cloudiness are excellent, the skin does not become sticky during and after bathing, a sufficient smooth feeling of the skin is obtained, and the formulation is preserved. A bath agent excellent in stability is provided. The bath agent of the present invention is used as an emulsified white cloudy bath agent.

Claims (2)

Liquid paraffin or liquid isoparaffin (a) having an average molecular weight of 200 to 350, liquid paraffin or liquid isoparaffin (b) having an average molecular weight of 480 to 600, a nonionic surfactant (c), and a water-soluble magnesium salt (d) A bath containing
In the composition, the mass ratio (a) / (b) of (a) to (b) is contained in a ratio of 4/1 to 30/1, and the (a) and the The total amount with (b) is 20 to 60% by mass, (c) is 1 to 20% by mass, and (d) is 0.1 to 15% by mass,
Bath additive.   Furthermore, the bath agent of Claim 1 which contains 0.1-5 mass% of C14-24 monohydric alcohol (e) whose melting | fusing point is 40 degreeC or more.