JP7430372B2 - pack agent - Google Patents

Description

The present invention relates to a pack agent. More specifically, the present invention relates to a peel-off type pack agent.

BACKGROUND ART Packing agents for cosmetic or beauty purposes that are applied to the skin surface of the face or body are known.

The purpose of such a pack is to allow moisturizing ingredients, whitening ingredients, medicinal ingredients, etc. to permeate into the skin after a certain period of time has passed when the pack is brought into close contact with the skin surface.

There are two types of packs: the peel-off type, which is applied to the skin surface and then dried to form a film that is peeled off, and the wash type, which is removed by rinsing with water.

Peel-off type packs have a high sealing property against the skin, so they have the advantage of being able to efficiently penetrate moisturizing ingredients by utilizing the perspiration effect.

In addition, since the film-formed pack agent is peeled off from the skin surface in one piece, the user can feel refreshed.

As such a peel-off type pack agent, one has been disclosed that contains a carboxyvinyl polymer and dries to form a film on the skin surface (Patent Document 1).

Japanese Patent Application Publication No. 2018-165266

However, since the pack agent of Patent Document 1 is formed into a film by blending carboxyvinyl polymer, when the pack agent is peeled off from the skin surface, the pack agent remains in close contact with the skin surface, resulting in irritation.

Furthermore, since the pack agent is in close contact with the skin surface, there is a problem that it is difficult to remove because the pack agent may tear or tear during removal, or a portion of the pack agent may remain on the skin surface. Therefore, the pack agent may not provide the refreshing feeling of being peeled off from the skin surface in one piece.

On the other hand, if the amount of carboxyvinyl polymer is reduced in order to provide a pack that is easy to peel off, the problem arises that the viscosity of the pack before application decreases, causing it to fall off the skin surface.

The present invention was made to solve the above-mentioned problems, and after drying the pack agent, water is penetrated to reduce the adhesion between the pack agent and the skin surface, resulting in less irritation. To provide a peel-off type pack that can be easily peeled off from the skin surface in one piece.

A pack agent according to one embodiment of the present invention contains an emulsion consisting of a thickener, an oil, a surfactant, and water, an alkyl acrylate copolymer emulsion, and xanthan gum, and has a viscosity of 3000 mPa·s. It is a peel-off type pack agent with a pressure of ~30,000 mPa・s, and the thickeners include polyacrylic acid amide, (hydroxyethyl acrylate/acryloyl dimethyl taurine Na) copolymer, polyacrylate-13, and (acrylamide/acrylic The alkyl acrylate copolymer emulsion is one or more selected from the group consisting of acrylates copolymer, (acrylates/ethylhexyl acrylate) copolymer, and ammonium acrylates copolymer. The present invention relates to a peel-off type pack containing at least one selected alkyl acrylate copolymer emulsion, wherein the amount of the alkyl acrylate copolymer emulsion is 20% to 50% by weight .

A peel-off type pack agent according to another aspect of the present invention is characterized in that the oil component is one or more selected from the group consisting of light liquid isoparaffin, squalane, polyisobutene, isohexadecane, olive oil, and jojoba oil. Regarding the pack agent.

In the pack agent according to another aspect of the present invention, the surfactant is selected from the group consisting of polyoxyethylene lauryl ether (7 mol), polysorbate 20, polysorbate 60, polysorbate 80, sorbitan oleate, and sorbitan isostearate. The present invention relates to a peel-off type pack agent characterized in that it contains one or more of the following:

Another aspect of the present invention relates to a peel-off type pack, characterized in that the emulsion is blended in an amount of 2% to 5% by weight.

According to the pack agent according to one aspect of the present invention, the pack agent contains an emulsion consisting of a thickener, an oil, a surfactant, and water, an alkyl acrylate copolymer emulsion, and xanthan gum. , the viscosity is 3000 mPa·s to 30000 mPa·s. Therefore, since it has sufficient viscosity, it can be applied without spilling off the skin surface.

Furthermore, since it contains an emulsion consisting of a thickener, oil, surfactant, and water, after the pack dries and forms a film, the emulsion absorbs water and becomes soggy, reducing the adhesion between the pack and the skin surface. This makes it easier to remove.

In the present invention, the thickener is one or more selected from the group consisting of polyacrylic acid amide, (hydroxyethyl acrylate/acryloyl dimethyl taurate Na) copolymer, polyacrylate-13, and (acrylamide/ammonium acrylate) copolymer. There may be. By this aspect, after the pack agent is dried and formed into a film, it is possible to provide a pack agent that has better water absorption properties and is easily softened.

In the present invention, the oil component may be one or more selected from the group consisting of light liquid isoparaffin, squalane, polyisobutene, isohexadecane, olive oil, and jojoba oil. These oils have high permeability into the skin, making it possible to provide a pack that further improves skin moisturizing properties. In addition, increasing moisture retention also makes it possible to reduce irritation when peeling the pack from the skin surface.

In the present invention, the surfactant may be one or more selected from the group consisting of polyoxyethylene lauryl ether (7 mol), polysorbate 20, polysorbate 60, polysorbate 80, sorbitan oleate, and sorbitan isostearate. These substances have an excellent emulsifying effect and solubility, and are extremely less toxic and irritating to the human body, so they can be suitably used.

In the present invention, the alkyl acrylate copolymer emulsion contains one or more selected from the group consisting of acrylates copolymer, (acrylates/ethylhexyl acrylate) copolymer, acrylates copolymer ammonium, and (acrylates/VA) copolymer. Good too. These alkyl acrylate copolymer emulsions act as film-forming agents and enable the formation of flexible films.

In the present invention, the amount of the alkyl acrylate copolymer emulsion blended may be 20% by weight to 50% by weight. By incorporating the amount within this range, it is possible to provide a pack that is not sticky and has appropriate adhesion to the skin surface when formed into a film.

In addition, when water is absorbed in order to remove the pack from the skin surface, if the amount of the pack is within the above range, the pack will soften while maintaining appropriate strength, so it will not tear, tear, or break. This can further reduce the possibility that a portion of the skin will remain on the skin surface.

In the present invention, the amount of emulsion blended is 2% to 5% by weight. By incorporating the amount within this range, the pack absorbs water and becomes soft, thereby further reducing the risk of tearing, tearing, or having a portion of the pack remaining on the skin surface. can.

Hereinafter, the pack agent according to the present invention will be explained in detail.

<1. Emulsion>
The pack according to this embodiment contains an emulsion. This emulsion contains a thickener, oil, surfactant, and water. Preferably, the emulsion consists of a thickener, an oil, a surfactant, and water.

By containing an emulsion, the pack can provide moisture and oil to the skin. In addition, it has moisturizing properties that prevent moisture from evaporating from the skin surface.

Since the emulsion contains a thickener, the viscosity of the pack increases before it dries to form a film, making it cream-like. Therefore, when applying the pack agent to the skin surface, overflowing or dripping can be prevented.

Furthermore, when the pack dries to form a film, this thickener absorbs water, causing the pack to become soggy and reduce its adhesion to the skin surface.

The pack according to this embodiment is applied to the skin surface and then dried to form a film on the skin surface. When the pack is subsequently removed from the skin surface, the pack will absorb water or hot water and will not tear, tear, or leave a portion of the pack on the skin surface.

Therefore, since the pack agent formed into a film can be peeled off from the skin surface in one piece, the user can feel refreshed.

As the emulsion thickener, polyacrylic acid amide, (hydroxyethyl acrylate/Na acryloyl dimethyl taurine) copolymer, (acrylamide/ammonium acrylate) copolymer, (Na acrylate/acryloyl dimethyl taurine/dimethyl acrylamide) crosspolymer, One or more selected from the group consisting of polyacrylate-13 and polyacrylate crosspolymer-6 can be used.

More preferably, the emulsion thickener is one selected from the group consisting of polyacrylic acid amide, (hydroxyethyl acrylate/Na acryloyldimethyltaurine) copolymer, polyacrylate-13, and (acrylamide/ammonium acrylate) copolymer. Any above is sufficient.

These thickeners can provide a pack that has better water absorption and is more easily softened after the pack dries and forms a film.

Furthermore, the thickeners exemplified above have little irritation to the skin, and therefore can be suitably used in packs that come into close contact with the skin surface.

Since the emulsion contains oil, it prevents moisture from evaporating from the skin surface to which the pack is applied. Therefore, the pack agent can have moisturizing properties.

As the oil component of the emulsion, one or more selected from the group consisting of light liquid isoparaffin, squalane, polyisobutene, isohexadecane, olive oil, and jojoba oil can be used.

These oils have high permeability into the skin and can provide a pack that further improves skin moisturizing properties. In addition, increasing moisture retention also makes it possible to reduce irritation when peeling the pack from the skin surface.

Since the emulsion contains a surfactant, it can disperse oil throughout the pack and increase its moisturizing properties.

Surfactants for the emulsion include polyoxyethylene lauryl ether (7 mol), polysorbate 20, polysorbate 60, polysorbate 80, sorbitan oleate, sorbitan isostearate, and PEG-7 trimethylolpropane coconut oil alkyl ether. One or more selected ones can be used.

Furthermore, the surfactant of the emulsion is more preferably one or more selected from the group consisting of polyoxyethylene lauryl ether (7 mol), polysorbate 20, polysorbate 60, polysorbate 80, sorbitan oleate, and sorbitan isostearate. .

The surfactants exemplified above have excellent emulsifying effects and solubility, and thus contribute to improving moisture retention. Furthermore, since it is a substance with extremely low toxicity and irritation to the human body, it can be suitably used in packs that come into close contact with the skin surface.

Emulsions contain water in addition to thickeners, oils, and surfactants.

The amount of emulsion to be blended in the entire pack is not limited, but is preferably 2% to 5% by weight.

If the amount of emulsion contained in the entire pack is less than 2% by weight, when the pack dries and forms a film, its water absorption will decrease, so the pack will not be sufficiently softened and will not reach the desired skin surface. No reduction in adhesion can be obtained. In addition, the pack agent cannot provide sufficient moisturizing properties.

If the amount of emulsion contained in the entire pack is more than 5% by weight, when the pack dries and forms a film, the pack will absorb too much water, causing the pack to overflow or drip from the skin surface. There is an increased risk that this will happen.

Therefore, by setting the amount of emulsion to the entire pack within the above range, the pack will absorb water and become soft, which will prevent it from tearing, tearing, or leaving part of the pack on the skin surface. This can further reduce the risk of this happening.

<2. Alkyl acrylate copolymer emulsion>
The pack agent according to this embodiment contains an alkyl acrylate copolymer emulsion.

Alkyl acrylate copolymer emulsions contain two or more monomers of alkyl acrylate (C ₁ -C ₄ and C ₈ ), alkyl methacrylate (C ₁ -C ₄ and C ₈ ), acrylic acid, or methacrylic acid. It is an emulsion of a copolymer mainly composed of.

The alkyl acrylate copolymer emulsion is a film-forming agent that is water-soluble and forms a film when dried. Therefore, the pack agent is applied to the skin surface and then dried to form a film.

The alkyl acrylate copolymer emulsion is selected from the group consisting of acrylates copolymers, (acrylates/ethylhexyl acrylate) copolymers, ammonium acrylates copolymers, (acrylates/VA) copolymers, and (alkyl acrylates/dimethicone) copolymers. One or more can be used.

Furthermore, the alkyl acrylate copolymer emulsion preferably contains one or more selected from the group consisting of acrylates copolymer, (acrylates/ethylhexyl acrylate) copolymer, acrylates copolymer ammonium, and (acrylates/VA) copolymer. preferable.

When the alkyl acrylate copolymer emulsion contains the components exemplified above, it is possible to form a soft film on the skin surface. Furthermore, since these ingredients have low skin irritation and skin sensitization, they can be suitably used in packs that come into close contact with the skin surface.

The amount of the alkyl acrylate copolymer emulsion blended into the entire pack is not limited, but is preferably 20% to 50% by weight.

If the amount of the alkyl acrylate copolymer emulsion blended in the entire pack agent is less than 20% by weight, the strength of the film will decrease.

The alkyl acrylate copolymer emulsion also acts as a thickener. Therefore, if the amount of the alkyl acrylate copolymer emulsion blended in the entire pack agent is more than 50% by weight, the viscosity of the pack agent becomes excessive, making it difficult to apply the pack agent to the skin surface. Moreover, when it dries to form a film, the surface of the pack agent becomes sticky, resulting in a decrease in the feeling of use.

Therefore, by setting the blending amount of the alkyl acrylate copolymer emulsion within the above range, it is possible to provide a pack that is non-sticky and has appropriate adhesion to the skin surface when formed into a film.

In addition, when water is absorbed in order to remove the pack from the skin surface, if the amount of the pack is within the above range, the pack will soften while maintaining appropriate strength, so it will not tear, tear, or break. This can further reduce the possibility that a portion of the skin will remain on the skin surface.

<3. Xanthan gum>
The pack agent according to this embodiment contains xanthan gum.

Xanthan gum is not toxic to humans and becomes viscous when dissolved in water. Therefore, an appropriate amount is blended in order to adjust the pack agent to a desired viscosity.

The amount of xanthan gum blended is not limited, but is preferably 0.01% by weight to 3.0% by weight. If the amount is less than 0.01% by weight, no improvement in viscosity by xanthan gum can be expected. Even if more than 3.0% by weight is added, the improvement in viscosity due to xanthan gum almost reaches a ceiling.

<4. Other ingredients>
The pack agent according to the present embodiment may contain, in addition to the above-mentioned components, various components that are generally incorporated into cosmetics, if necessary.

The pack according to this embodiment may contain a whitening ingredient. Examples of whitening ingredients include, but are not limited to, vitamin C and its derivatives, arbutin, placenta extract, hydroquinone, ellagic acid, rusinol, linoleic acid, kojic acid, tranexamic acid, and the like.

The pack according to this embodiment may further contain a humectant and/or an emollient. Humectants and/or emollients include, but are not limited to, concentrated glycerin, sodium hyaluronate, hyaluronic acid, collagen, placenta extract, hydrolyzed collagen, 1,3 butylene glycol, 2-ethylhexyl palmitate, and the like.

The pack agent according to this embodiment may contain alcohol. Alcohol has both hydrophilic and hydrophobic properties. Therefore, by containing alcohol, it becomes possible to dissolve hydrophilic and hydrophobic components at the same time. Alcohols include, but are not limited to, ethanol, isopropanol, dipropylene glycol, anhydrous ethanol, and the like.

The pack according to this embodiment may contain an anti-inflammatory agent. Containing anti-inflammatory agents can suppress skin inflammation and prevent skin roughness. By preventing skin inflammation and rough skin, it is possible to reduce irritation when removing the pack. Anti-inflammatory agents include, but are not limited to, dipotassium glycyrrhizinate, allantoin, stearyl glycyrrhetinate, and the like.

In addition, the pack according to the present embodiment may appropriately contain antibacterial agents, detergents, colorants, fragrances, vitamins, plant extracts, and the like.

<4. Viscosity>
The pack agent according to this embodiment has a viscosity of 3000 mPa·s to 30000 mPa·s.

If the viscosity is lower than 3000 mPa·s, there is an increased risk that the pack will overflow or drip from the skin surface when applied. Furthermore, if the viscosity is low, it is not possible to apply the pack agent thickly to the skin surface.

Therefore, it is not possible to provide a pack that has sufficient sealing properties against the skin, and when it is removed from the skin surface, the pack may tear or tear due to its thinness, or a part of the pack may remain on the skin surface. There is an increased risk that something will happen.

If the viscosity is higher than 30,000 mPa·s, the resistance increases when applied to the skin surface, resulting in a poor feeling of use. In addition, the thickness may become uneven, which increases the risk of uneven skin tone, for example, when the pack contains whitening ingredients.

Furthermore, when a highly viscous pack absorbs water and becomes soft, its adhesion to the skin does not decrease sufficiently, and it becomes irritating when removed.

Therefore, by setting the viscosity of the pack agent within the above range, after drying the pack agent, water penetrates and reduces the adhesion between the pack agent and the skin surface, thereby providing a pack agent that is less irritating and easy to peel off. It becomes possible to do so.

Hereinafter, preferred embodiments of the present invention will be illustrated, but the present invention should not be understood as being limited to these embodiments.

<Example 1>
Adjustment of pack agent

(Adjustment of prescription examples)
According to the formulation examples shown in Tables 1 to 8 below, packs of formulation examples 1 to 8 according to embodiments of the present invention were obtained. The viscosity of the prepared pack agent was measured, and the measured viscosity is also shown in Tables 1 to 8.

(Prescription example 1)
The amounts of each component in Formulation Example 1 are as shown in Table 1 below. In Formulation Example 1, SIMULGEL NS (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 1 also lists the composition of SIMULGEL NS.

(Prescription example 2)
The blending amounts of each component in Formulation Example 2 are as shown in Table 2 below. In Formulation Example 2, SIMULGEL NS (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 2 also lists the composition of SIMULGEL NS.

(Prescription example 3)
The blending amounts of each component in Formulation Example 3 are as shown in Table 3 below. In Formulation Example 3, SIMULGEL NS (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 3 also lists the composition of SIMULGEL NS.

(Prescription example 4)
The blending amounts of each component in Formulation Example 4 are as shown in Table 4 below. In Formulation Example 4, SIMULGEL NS (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 4 also lists the composition of SIMULGEL NS.

(Prescription example 5)
The blending amounts of each component in Formulation Example 5 are as shown in Table 5 below. In Formulation Example 5, SEPIGEL 305 (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 5 also lists the composition of SEPIGEL 305.

(Prescription example 6)
The blending amounts of each component in Formulation Example 6 are as shown in Table 6 below. In Formulation Example 6, SIMULGEL NS (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 6 also lists the composition of SIMULGEL NS.

(Prescription example 7)
The blending amounts of each component in Formulation Example 7 are as shown in Table 7 below. In Formulation Example 7, SIMULGEL NS (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 7 also lists the composition of SIMULGEL NS.

(Prescription example 8)
The blending amounts of each component in Formulation Example 8 are as shown in Table 8 below. In Formulation Example 8, SEPIPLUS 400 (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 8 also lists the composition of SEPIPLUS 400.

(Adjustment of comparative example)
Packing agents of Comparative Examples 1 to 7 were obtained according to the formulation examples shown in Tables 9 to 15 below. The viscosity of the prepared pack agent was measured, and the measured viscosity is also shown in Tables 9 to 15.

(Comparative example 1)
The blending amounts of each component in Comparative Example 1 are as shown in Table 9 below. In Comparative Example 1, SIMULGEL NS (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 9 also lists the composition of SIMULGEL NS.

(Comparative example 2)
The blending amounts of each component in Comparative Example 2 are as shown in Table 10 below. In Comparative Example 2, SIMULGEL NS (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 10 also lists the composition of SIMULGEL NS.

(Comparative example 3)
The blending amounts of each component in Comparative Example 3 are as shown in Table 11 below. In Comparative Example 3, SIMULGEL NS (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 11 also lists the composition of SIMULGEL NS.

(Comparative example 4)
The blending amounts of each component in Comparative Example 4 are as shown in Table 12 below. In Comparative Example 4, SIMULGEL NS (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 12 also lists the composition of SIMULGEL NS.

(Comparative example 5)
The blending amounts of each component in Comparative Example 5 are as shown in Table 13 below. In Comparative Example 5, SIMULGEL NS (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 13 also lists the composition of SIMULGEL NS.

(Comparative example 6)
The blending amounts of each component in Comparative Example 6 are as shown in Table 14 below. In Comparative Example 6, SIMULGEL NS (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 14 also lists the composition of SIMULGEL NS.

(Comparative example 7)
The blending amounts of each component in Comparative Example 7 are as shown in Table 15 below. In Comparative Example 7, SEPIPLUS 400 (manufactured by Seiwa Kasei Co., Ltd.) was used as an emulsion. Table 15 also lists the composition of SEPIPLUS 400.

<Example 2>
Pack agent use evaluation test

Three subjects participated in the evaluation test as panelists and evaluated the feeling of use using the packs of Prescription Examples 1 to 8 and Comparative Examples 1 to 7 above.

The method for using the packs in this evaluation test was to take 2 ml of the packs of Formulation Examples 1 to 8 and Comparative Examples 1 to 7 and apply them onto the skin. The applied pack agent was air-dried for 10 minutes to form a film. After confirming that the pack had sufficiently dried to form a film, 100 ml of 40°C hot water was absorbed into the pack, and then the pack was peeled off from the skin surface.

In using the above pack agent, I. Evaluation during application of pack agent, II. Evaluation when the pack agent dries to form a film, and III. We received responses from panelists regarding their evaluation of peeling off the pack from the skin surface. The evaluation results answered by the panelists are shown in Tables 16 to 18 below.

(I. Evaluation during application of pack agent)
When applying the pack agent, evaluate (a) whether the pack agent overflows or drips from the skin surface, and (b) when the pack agent is applied, the hardness and/or the gap between the skin surface and the skin surface. Table 16 shows whether resistance was felt or not, which was evaluated on a three-level scale. The evaluation criteria for (a) and (b) are shown below.

(a) Evaluation criteria for whether the pack overflows or drips from the skin surface 3: Most of the applied pack overflows or drips 2: Some of the applied pack overflows or drips 1: The applied pack did not overflow or drip.

(b) Evaluation criteria for hardness and/or whether you feel any resistance to the skin surface when applying the pack 3: Hardness and/or strong resistance to the skin surface is felt 2: I felt some resistance between the firmness and/or the skin surface. 1: I almost didn't feel any resistance between the firmness and/or the skin surface.

(II. Evaluation when the pack agent dries and forms a film)
As an evaluation when the pack agent dries to form a film, (c) whether it is sticky or not, and (d) whether the pack agent has thickness and adhesion are evaluated in three stages, and shown in Table 17. . The evaluation criteria for (c) and (d) are shown below.

(c) Evaluation criteria for stickiness 3: The surface of the pack agent felt strongly sticky 2: The surface of the pack agent felt a little sticky 1: The surface of the pack agent was not sticky and felt smooth

(d) Evaluation criteria for pack agent thickness and adhesion 3: It is not thick and it is difficult to tell whether a film has been formed 2: It can be seen that a film has been formed, but it is not thick 1: Thickness There was also good adhesion between the pack agent and the skin surface.

(III. Evaluation when peeling the pack from the skin surface)
When the pack agent was peeled off from the skin surface, it was evaluated on a three-point scale for (e) tearing, tearing, or residue on the skin surface, and (f) irritation, as shown in Table 21. The evaluation criteria for (e) and (f) are shown below.

(e) Evaluation criteria for whether there are tears, tears, or residue on the skin surface 3: There are many tears and tears, and it is difficult to remove, or it comes off in pieces 2: There are some tears and tears, and some of the pack agent remained on the skin surface 1: There were no tears or tears, and the pack came off with just one piece.

(f) Evaluation criteria for non-irritation 3: Strong irritation when removed 2: Slight irritation when removed 1: Almost no irritation when removed

As shown in Table 16, in Examples 1 to 8, the pack agent did not overflow or drip when applied to the skin surface, and was hard enough to be used without feeling any resistance between it and the skin surface. I understand.

Those with low viscosity like Comparative Examples 1, 4, 6, and 7 had problems in use because they overflowed or dripped. On the other hand, those with high viscosity such as Comparative Example 3 were hard and/or felt resistance to the skin surface, and a decrease in the feeling of use such as uneven application was observed.

As shown in Table 17, in Examples 1 to 8, when the pack agent was formed into a film, there was no stickiness on the surface of the pack agent, and the thickness and adhesion of the pack agent were also sufficient.

On the other hand, in Comparative Examples 1, 2, 3, and 6, stickiness occurred on the surface of the pack agent. It has been found that this causes clothing fibers to stick to the fabric, causing discomfort to the user. Moreover, in Comparative Examples 1, 4, and 7, it was difficult to see where the film-formed pack agent was applied, and it was difficult to get a feeling of use. Furthermore, it was found that it was difficult to determine the position of the pack when rinsing with hot water.

As shown in Table 18, in Examples 1 to 8, the pack agent was not torn or torn when peeled off, and the pack agent was peeled off in one piece. It was also less irritating and easy to peel off. Therefore, when the pack agent is peeled off, the user can feel refreshed and it has been well received.

Comparative Examples 1, 2, and 4 to 7 were difficult to remove because they were torn or torn during removal. Some of the packs fell apart when they were peeled off, making it unpopular because the refreshing feeling of having one pack peeled off cleanly was not achieved. In Comparative Examples 1, 2, and 7, when the pack agent was removed from the skin surface, it could not be removed without rubbing with fingers, which caused irritation and a strong burden on the skin, making the user hesitant to remove it. .

The present invention provides a peel-off type pack that reduces the adhesion between the pack and the skin surface by allowing water to penetrate after drying the pack, causing less irritation and being easy to peel off from the skin surface in one piece. can do.

Claims (4)

An emulsion consisting of a thickener, oil, surfactant, and water,
an alkyl acrylate copolymer emulsion,
Contains xanthan gum,
A peel-off type pack having a viscosity of 3000 mPa·s to 30000 mPa·s,
The thickener is one or more selected from the group consisting of polyacrylic acid amide, (hydroxyethyl acrylate/Na acryloyldimethyltaurine) copolymer, polyacrylate-13, and (acrylamide/ammonium acrylate) copolymer. ,
The alkyl acrylate copolymer emulsion contains one or more selected from the group consisting of acrylates copolymer, (acrylates/ethylhexyl acrylate) copolymer, and acrylates copolymer ammonium ,
A peel-off type pack agent characterized in that the amount of the alkyl acrylate copolymer emulsion blended is 20% to 50% by weight . 2. The peel-off type pack agent according to claim 1, wherein the oil is one or more selected from the group consisting of light liquid isoparaffin, squalane, polyisobutene, isohexadecane, olive oil, and jojoba oil. A claim characterized in that the surfactant is one or more selected from the group consisting of polyoxyethylene lauryl ether (7 mol), polysorbate 20, polysorbate 60, polysorbate 80, sorbitan oleate, and sorbitan isostearate. Item 2. Peel-off type pack agent according to item 1 or 2. 4. The peel-off type pack according to claim 1 , wherein the amount of the emulsion is 2% to 5% by weight.