Powdered face pack cosmetics

Abstract

To provide powdery pack cosmetics that contain a water-soluble salt of alginic acid and a divalent metal salt reacting with the salt, are used by mixing with water at the time of use, and are easily spread and hardly drip when applied to the skin.SOLUTION: Provided is a powdery pack cosmetic containing the following components (a) to (e): (a) an alginic acid water-soluble salt; (b) a divalent metal salt capable of reacting with (a); (c) polyphosphate; (d) bentonite; and (e) xanthan gum, the content of component (a) being 6.0 to 12.5 wt.%, the content of component (d) being 5.0 to 9.0 wt.%, the content of component (e) being 0.1 to 1.0 wt.%, the powdery pack cosmetic being a powdery pack cosmetic mixed with water at the time of use, and easily spread and hardly drip when applied to the skin.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a powdery pack cosmetic which contains a water-soluble alginic acid salt and a divalent metal salt that reacts with the salt, is mixed with water when used, and is easily spreadable and less likely to drip when applied to the skin. [Background technology]

[0002] Traditionally, pack cosmetics have been divided into two types: those that are washed off after use and those that are peeled off. The wash-off type typically has a cream-like base that is applied to the skin, left on, and then washed off with water or lukewarm water. The peel-off type has a jelly or paste-like base that is applied to the skin, dried to form a film, and then peeled off. Among the peel-off types are a pack cosmetic in which a powder containing alginate and a divalent or higher metal salt that reacts with the alginate is mixed with water to form a paste before use (Patent Document 1), and a pack cosmetic containing crystalline cellulose to improve dripping resistance and ease of spreading (Patent Document 2).

[0003] However, the above-mentioned pack cosmetics have not been sufficiently improved in terms of resistance to dripping when applied and ease of spreading. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 52-10426 [Patent Document 2] Special Publication No. 58-39608 Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, an object of the present invention is to provide a powdery pack cosmetic that contains a water-soluble salt of alginic acid and a divalent metal salt that reacts with said salt, is mixed with water when used, and is easy to spread on the skin and does not drip easily. [Means for solving the problem]

[0006] The following components (a) to (e) (a) Water-soluble alginic acid salt (b) a divalent metal salt capable of reacting with (a) (c) Polyphosphate (d) Bentonite (e) Xanthan gum The present invention provides a powdery pack cosmetic comprising the above components, wherein the content of component (a) is 6.0 to 12.5 wt %, the content of component (d) is 5.0 to 9.0 wt %, and the content of component (e) is 0.1 to 1.0 wt %, and the pack cosmetic is mixed with water before use.

[0007] The present invention also provides a powdery pack cosmetic according to claim 1, wherein the component (c) is sodium pyrophosphate. [Effects of the Invention]

[0008] The powdered pack cosmetic of the present invention contains a water-soluble alginic acid salt and a divalent metal salt that reacts with the salt, is mixed with water when used, and is a powdered pack cosmetic that is easy to spread on the skin and does not drip easily. BEST MODE FOR CARRYING OUT THE INVENTION

[0009] The content of the water-soluble alginic acid salt (component (a)) of the present invention is 6.0 to 12.5 wt. % of the powder pack cosmetic, and more preferably 8.0 to 11.0 wt. Within these ranges, when mixed with water and applied to the skin, the product provides a good feel in use in terms of ease of spreading and resistance to dripping. If the content of the water-soluble alginic acid salt (component (a)) of the present invention is less than 6.0 wt. %, the product may be prone to dripping upon application, while if it is more than 12.5 wt. %, the product may be difficult to spread upon application.

[0010] Specific examples of the water-soluble alginic acid salt (component (a)) used in the present invention include sodium alginate, potassium alginate, and ammonium alginate, and one or more of these may be contained. Of these, sodium alginate and potassium alginate are more preferred in the present invention.

[0011] The component (a) water-soluble alginic acid salt used in the present invention can be any of those commonly used in cosmetics. As the component (a) water-soluble alginic acid salt, commercially available products can be used, such as the Kimica Algin I series and Kimica Algin K series manufactured by Kimica Co., Ltd., and Snow Algin H manufactured by Fuji Chemical Industry Co., Ltd.

[0012] The content of the divalent metal salt capable of reacting with component (b)(a) of the present invention is not particularly limited relative to the powdery pack cosmetic, but is preferably 6.0 to 15.0% by weight.

[0013] Specific examples of divalent metal salts that can react with component (b)(a) used in the present invention include calcium sulfate, calcium citrate, calcium chloride, zinc sulfate, zinc lactate, etc., and one or more of these can be contained. Of these, calcium sulfate is more preferred in the present invention.

[0014] The divalent metal salt capable of reacting with components (b) and (a) used in the present invention can be any of those used in ordinary cosmetics. Commercially available divalent metal salts capable of reacting with components (b) and (a) can be used, for example, Otafuku brand special calcium sulfate manufactured by Sanpo Chemical Industry Co., Ltd.

[0015] The content of the polyphosphate salt (component (c)) of the present invention is not particularly limited relative to the powdery pack cosmetic, but is preferably 0.5 to 3.0% by weight.

[0016] Specific examples of the polyphosphate salt (c) of the present invention include sodium pyrophosphate and sodium tripolyphosphate, and one or more of these may be contained. Of these, sodium pyrophosphate is more preferred in the present invention.

[0017] The polyphosphate (component (c)) used in the present invention can be any polyphosphate commonly used in cosmetics. A commercially available product can be used as the polyphosphate (component (c)), such as tetrasodium pyrophosphate (anhydrous), a food additive manufactured by Taihei Chemical Industry Co., Ltd.

[0018] The content of bentonite (component (d)) used in the present invention is 5.0 to 9.0 wt. % of the powder pack cosmetic, and more preferably 6.0 to 8.0 wt. Within these ranges, when mixed with water and applied to the skin, it provides a good feel in use, with ease of spreading and resistance to dripping. If the content of component (d) of the present invention is less than 5.0 wt. %, it may be prone to dripping upon application, while if it is more than 9.0 wt. %, it may be difficult to spread upon application.

[0019] The component (d) bentonite used in the present invention can be any bentonite commonly used in cosmetics. Component (d) bentonite can be a commercially available product, such as GELWHITE-H XR manufactured by BYK ADDITIVES Inc. or KUNIPIA-F manufactured by Kunimine Industries Co., Ltd.

[0020] The content of component (e) xanthan gum used in the present invention is 0.1 to 1.0 wt. % of the powder pack cosmetic, more preferably 0.5 to 1.0 wt. Within these ranges, when mixed with water and applied to the skin, the xanthan gum provides a good feel in use, with ease of spreading and resistance to dripping. If the content of component (e) xanthan gum in the present invention is less than 0.1 wt. %, the xanthan gum may be prone to dripping upon application, while if it is more than 1.0 wt. %, the xanthan gum may be difficult to spread upon application.

[0021] The xanthan gum (e) used in the present invention can be any xanthan gum commonly used in cosmetics. As the xanthan gum (e), commercially available products can be used, such as Echo Gum SF and Keldent manufactured by DSP Gokyo Food & Chemical Co., Ltd.

[0022] In addition to the above-mentioned essential components, the powdery pack cosmetic of the present invention may contain components commonly used in cosmetics, such as nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, preservatives, antioxidants, ultraviolet absorbers, powders, thickeners, colorants, cosmetic ingredients, etc., within limits that do not impair the effects of the present invention. [Example]

[0023] The present invention will be described in more detail below with reference to examples, but the technical scope of the present invention is not limited to these examples. The contents are expressed in % by weight unless otherwise specified.

[0024] Powdery pack cosmetics having the compositions listed in Tables 1 to 5 were prepared by the following method. (Preparation method) All the ingredients were mixed uniformly in a Henschel mixer to obtain a powdery pack cosmetic. The usability of each of the obtained pack cosmetics was evaluated.

[0025] 30 g of powdered pack cosmetics having the compositions listed in Tables 1 to 5 were mixed with 100 g of purified water to prepare paste-like preparations, and the usability ("ease of spreading when applied" and "absence of dripping") of each cosmetic was evaluated using the following test method. The results are shown in Tables 1 to 5.

[0026] (Evaluation method) Easy to spread when applying A panel (15 people) conducted a usability test and rated the ease of spreading when applying the product on a two-point scale: "easy to spread" and "difficult to spread," according to the following criteria. ◎: More than 12 people rated it as "easy to spread." ○: 8 to 11 people rated it as "easy to spread." △: 4 to 7 people rated it as "easy to spread." ×: Three or fewer people rated it as "easy to spread."

[0027] No dripping A panel (15 people) conducted a usage test and evaluated dripping after application using two levels: "does not drip easily" and "does drip easily" according to the following criteria. ◎: 12 or more people rated it as "less likely to drip." ○: 8 to 11 people rated it as "less likely to drip." △: 4 to 7 people rated it as "not prone to dripping." ×: Three or fewer people rated it as "hard to drip."

[0028] [Table 1] *1 Snow Algin H (Fuji Chemical Industry Co., Ltd.) *2 Kimica Algin K-5-150 (Kimica Co., Ltd.) *3 Kimica Algin NH-3 (Kimica Co., Ltd.) *4 Otafuku brand special calcium sulfate (manufactured by Sanpo Chemical Industry Co., Ltd.) *5 Food additive tetrasodium pyrophosphate (anhydrous) (manufactured by Taihei Chemical Industry Co., Ltd.) *6 GELWHITE-H XR (BYK ADDITIVES Inc.) *7 Echo Gum SF (manufactured by DSP Gokyo Food & Chemical Co., Ltd.) *8 Ceolus FD-101 (Asahi Kasei Chemicals Corporation)

[0029] As shown in Examples 1 to 6 in Table 1, when the water-soluble salt of alginic acid was contained in an amount of 6.0 to 12.5 wt%, satisfactory results were obtained in all the evaluated items. On the other hand, as shown in Comparative Examples 1 and 2, when the water-soluble salt of alginic acid was contained in an amount of less than 6.0 wt%, satisfactory results were not obtained in terms of the absence of dripping, and when the water-soluble salt of alginic acid was contained in an amount of more than 12.5 wt%, satisfactory results were not obtained in terms of the ease of spreading during application.

[0030] [Table 2] *9 Calcium chloride dihydrate, food additive (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.)

[0031] As shown in Examples 7 to 11 in Table 2, satisfactory results were obtained in all the items evaluated, regardless of the content of the divalent metal salt capable of reacting with the water-soluble salt of alginic acid.

[0032] [Table 3] *10 Sodium tripolyphosphate Grade 1 (Kanto Chemical Co., Ltd.)

[0033] As shown in Examples 12 to 16 in Table 3, satisfactory results were obtained in all the evaluated items regardless of the content of polyphosphate. On the other hand, as shown in Comparative Example 3, when no polyphosphate was contained, satisfactory results were not obtained in terms of ease of spreading during application.

[0034] [Table 4] *11 Ionite (Mizusawa Industrial Chemicals)

[0035] As shown in Examples 17 to 20 in Table 4, when the bentonite content was 5.0 to 9.0 wt%, satisfactory results were obtained in all evaluated items. On the other hand, as shown in Comparative Examples 4 and 5, when the bentonite content was less than 5.0 wt%, satisfactory results were not obtained in terms of non-dripping, and when the bentonite content was more than 9.0 wt%, satisfactory results were not obtained in terms of ease of spreading during application. Furthermore, as shown in Comparative Example 6, when sodium magnesium silicate was used instead of bentonite, satisfactory results were not obtained in terms of non-dripping.

[0036] [Table 5] *12 Soagina MV201G (Mitsubishi Chemical Foods) *13 Sunrose FJ08HC (manufactured by Nippon Paper Papylia Co., Ltd.)

[0037] As shown in Examples 21 to 23 in Table 5, when xanthan gum was added in the range of 0.1 to 1.0 wt%, satisfactory results were obtained in all evaluated items. On the other hand, as shown in Comparative Examples 7 and 8, when xanthan gum was added less than 0.1 wt%, satisfactory results were not obtained in terms of non-dripping, and when xanthan gum was added more than 1.0 wt%, satisfactory results were not obtained in terms of ease of spreadability upon application. Furthermore, as shown in Comparative Examples 9 and 10, when carrageenan or cellulose gum was added instead of xanthan gum, satisfactory results were not obtained in terms of ease of spreadability upon application or non-dripping.

[0038] Next, other examples of the present invention will be shown. The powdery pack cosmetic of Example 24 also achieved satisfactory results in all of the items evaluated.

[0039] Example 24 (Ingredients) (Weight%) (1) Sodium alginate *1 3.0 (2) Potassium alginate *2 7.0 (3) Calcium sulfate *4 11.5 (4) Sodium pyrophosphate *5 1.8 (5) Bentonite *6 7.0 (6) Xanthan gum *7 0.5 (7) Microcrystalline cellulose *8 residue (8) Betaine *14 1.0 (9) Ceramide 2, ceramide 3, ceramide 6, phytosterols, hydrogenated lecithin *15 0.1 (10) Dipotassium glycyrrhizinate *16 0.05 (11) Sodium hyaluronate *17 0.05 *14 Aminocoat (Asahi Kasei Chemicals Corporation) *15 Phytocompo-C (Nippon Fine Chemicals) *16 Dipotassium glycyrrhizinate (manufactured by Nippon Paper Papylia Co., Ltd.) *17 PEMS-HY (manufactured by Technoble)

[0040] (Preparation method) Components 1 to 11 of Example 24 were mixed uniformly in a Henschel mixer to obtain a powdery pack cosmetic. [Industrial Applicability]

[0041] According to the present invention, it is possible to provide a powdery pack cosmetic which contains a water-soluble alginic acid salt and a divalent metal salt that reacts with said salt, is mixed with water when used, and is easy to spread on the skin and does not drip easily.

Claims

1. The following components (a) to (e): (a) Water-soluble alginic acid salt (b) a divalent metal salt capable of reacting with (a) (c) polyphosphate (d) Bentonite (e) xanthan gum The powdery pack cosmetic contains the above components, wherein the content of component (a) is 6.0 to 12.5% ​​by weight, the content of component (d) is 5.0 to 9.0% by weight, and the content of component (e) is 0.1 to 1.0% by weight, and the powdery pack cosmetic is mixed with water when used.

2. 2. The powdery pack cosmetic according to claim 1, wherein said component (c) is sodium pyrophosphate.

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