JP2023125283A - Laver extract-containing cosmetics - Google Patents

Abstract

To provide a sheet mask that includes an adhesive layer containing laver extract.SOLUTION: A sheet mask includes a support and an adhesive layer laminated on the support. The adhesive layer contains laver extract as a skin beauty ingredient but is free from fragrances.SELECTED DRAWING: None

Description

The present invention relates to cosmetics containing seaweed extract as a skin beautifying ingredient.

Seaweed extract is expected to have various effects such as sun protection, whitening effect, moisturizing effect, improvement of rough skin, improvement of hair quality, and immune activation effect, and is used as an external preparation for the skin and cosmetics (Patent Documents 1- 5). Further, cosmetic compositions for packs containing seaweed extract have also been studied (Patent Document 6).
However, sheet masks containing seaweed extract in the adhesive layer have not been specifically studied so far.
Regarding gel sheet masks containing adhesive layers, for example, Patent Document 7 discloses cosmetics containing various extracts.

Japanese Patent Application Publication No. 7-242523 Japanese Patent Application Publication No. 2000-212056 Japanese Patent Application Publication No. 2013-133324 Japanese Patent Application Publication No. 2005-336148 Japanese Patent Application Publication No. 2017-19781 Japanese Patent Application Publication No. 2008-255066 JP2019-89730A

The present inventors recognize that when commercializing a sheet mask that includes an adhesive layer containing seaweed extract, the relationship between the seaweed extract and the adhesive layer has not been specifically studied. reached. Therefore, an object of the present invention is to provide a sheet mask including an adhesive layer containing seaweed extract.

In the course of extensive research to solve this problem, the present inventors found that sheet masks containing an adhesive layer contain seaweed extract as a skin beautifying ingredient in the adhesive layer, but do not contain fragrances, which can be stored for a long time. The inventors discovered that it was possible to produce a sheet mask with excellent storage stability, and as a result of further research, they completed the present invention. That is, the present invention relates to the following.

[1] A sheet mask comprising a support and an adhesive layer laminated on the support, wherein the adhesive layer contains seaweed extract as a skin beautifying ingredient and does not contain fragrance.
[2] The sheet mask according to [1] above, containing 0.005% by mass to 0.1% by mass of seaweed extract.

According to the present invention, a sheet mask containing seaweed extract that contains seaweed extract as a skin-beautifying ingredient in the adhesive layer and does not contain fragrances will not deteriorate in quality even after long-term storage and will not reduce the adhesive strength of the adhesive layer. can be provided.

FIG. 1 is a graph showing the change in color of the adhesive layer of the sheet mask of the present invention when stored at 60°C.

The sheet mask of the present invention is a sheet mask comprising a support and an adhesive layer laminated on the support, and the adhesive layer contains seaweed extract as a skin beautifying ingredient and does not contain fragrance.
In the present invention, seaweed extract is used as a skin-beautifying ingredient, and is an extract from Pyropia yezoensis, which is of the order Pyropia, family Pyropidae, and is obtained by extracting fractions containing porphyrans, zinc, iron, etc. with water, alcohol, etc. means the extract obtained.

As a sheet mask using the cosmetic composition of the present invention, a sheet mask comprising a support and an adhesive layer laminated on the support is suitable.
The material of the support is not limited as long as it is commonly used for sheet masks.
Polyolefins such as polyethylene and polypropylene; ethylene-vinyl acetate copolymers, vinyl acetate-vinyl chloride copolymers, polyvinyl chloride, etc.; polyamides such as nylon; polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate, polyethylene naphthalate, etc. ; cellulose derivatives; synthetic resins such as polyurethane, and metals such as aluminum. Examples of the form of the support include films; sheets such as sheets, porous sheets, and foamed sheets; fabrics such as woven fabrics, knitted fabrics, and nonwoven fabrics; foils; and laminates thereof. . Further, the thickness of the support is not particularly limited, but is preferably about 5 to 2000 μm from the viewpoint of ease of work when applying a sheet mask and ease of manufacture.

The adhesive layer may contain partially neutralized polyacrylic acid, gelatin, polyethylene glycol, synthetic aluminum silicate, magnesium aluminate metasilicate, sodium edetate, and water. When the cosmetic of the present invention is used in a sheet mask, seaweed extract as a skin beautifying ingredient is contained in the adhesive layer.

The content of seaweed extract in the adhesive layer is preferably 0.005 to 0.1% by mass, more preferably 0.007 to 0.1% by mass, and even more preferably, It is 0.01% by mass to 0.1% by mass. By setting the amount to 0.005% by mass or more, it is possible to provide a sheet mask that has sufficient effects derived from the seaweed extract and has excellent storage stability without reducing the adhesive strength of the adhesive layer. can.

In addition, the adhesive layer contains 5% to 7% by mass of partially neutralized polyacrylic acid, 1% to 2% by mass of gelatin, and 9% to 11% by mass of polyethylene, based on the total amount of the adhesive layer. glycol, 3% to 5% by weight of synthetic aluminum silicate, 0.3% to 0.5% by weight of magnesium aluminate metasilicate, 0.3% to 0.4% by weight of sodium edetate, and Contains 50% to 80% by weight of water.
The polyethylene glycol is preferably a polyethylene glycol having an average molecular weight of 350 to 450, such as Macrogol 400 (17th edition Japanese Pharmacopoeia).

It is preferable that the adhesive layer further contains a pH adjuster, a preservative, etc. in addition to the above components.

Examples of pH adjusting agents include lactic acid, acetic acid, formic acid, tartaric acid, oxalic acid, benzoic acid, glycolic acid, malic acid, citric acid, and amines. From this point of view, it is particularly preferable to use lactic acid. When a pH adjuster is blended into the adhesive layer according to the present invention, its content is not particularly limited, but the content of lactic acid is 0.01 to 0 based on the total mass of the adhesive layer. The amount is preferably 0.2% by weight, more preferably 0.05-0.15% by weight.

Examples of the preservative include paraoxybenzoic acid ester, 1,2-pentanediol, benzoic acid, benzoate, salicylate, sorbic acid, sorbate, dehydroacetate, benzalkonium chloride, etc., but the present invention From the viewpoint of a good balance between a broad antibacterial spectrum and safety, it is more preferable to use paraoxybenzoic acid ester, and it is particularly preferable to use methyl paraoxybenzoate. When a preservative is added to the adhesive layer according to the present invention, the content is not particularly limited, but the content of methyl paraoxybenzoate is 0.2 based on the total mass of the adhesive layer. The content is preferably 0.3% by mass.

In addition to the above-mentioned components, the adhesive layer may contain a stabilizer, a filler, a pigment, an ultraviolet absorber, a cooling sensation imparting agent, a warming sensation imparting agent, and the like.
Examples of the stabilizer include tocopherol and its ester derivatives, ascorbic acid and its ester derivatives, dibutylhydroxytoluene, butylhydroxyanisole, and the like.
Examples of the filler include titanium oxide, zinc oxide, hydrated silica, magnesium carbonate, calcium hydrogen phosphate, magnesium silicate, hydrated magnesium silicate, diatomaceous earth, silicic anhydride, bentonite, and the like.

Examples of ultraviolet absorbers include para-aminobenzoic acid, para-aminobenzoic acid ester, amyl paradimethylaminobenzoate, salicylic acid ester, menthyl anthranilate, umbelliferone, aesculin, benzyl cinnamate, cinoxate, guaiazulene, urocanic acid, 2-( 2-Hydroxy-5-methylphenyl)benzotriazole, 4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone, dioxybenzone, octabenzone, dihydroxydimethoxybenzophenone, sulisobenzone, benzoresorcinol, octyldimethylparaaminobenzoate, ethylhexylparamethoxycyna Examples include mate.

The pigments are Red No. 2 (Amaranth), Red No. 3 (Erythrosin), Red No. 102 (New Coccin), Red No. 104 (1) (Phloxin B), Red No. 105 (1) (Rose Bengal). , Red No. 106 (Acid Red), Yellow No. 4 (Tartrazine), Yellow No. 5 (Sunset Yellow FCF), Green No. 3 (Fast Green FCF), Blue No. 1 (Brilliant Blue FCF), Blue No. 2 (Indigo Carmine) ) and other legal dyes.

Examples of the cooling sensation imparting agent include terpene hydrocarbon compounds, menthol related compounds, etc., and specifically p-menthanes such as limonene, terpinolene, menthane, and terpinene, and monocyclic monoterpenes derived from these. Hydrocarbon compounds; l-menthol, d-menthol, dl-menthol, isopulegol, 3,l-menthoxypropane-1,2-diol, 1-(2-hydroxyphenyl)-4-(3-nitrophenyl) -1,2,3,6-tetrahydroxypyrimidin-2-one, ethylmenthanecarboxamide, p-menthane-3,8-diol, trialkyl-substituted cyclohexanecarboxamide, and the like.

Warming agents include capsaicin analogs such as capsaicin, capsaicinoid, dihydroxycapsaicin, and capsanthin; components derived from capsicum such as capsicoside, capsicum extract, capsicum tincture, and capsicum powder; benzyl nicotinate; β-butoxyethyl nicotinate; N-acyl Vanillylamide; nonylic acid vanillylamide, etc. are mentioned.
The surface of the adhesive layer may be covered with a releasable film. By being coated, the stability of the sheet mask can be increased.

The sheet mask of the present invention may further include a release liner for protecting the adhesive layer.

The liner is not particularly limited as long as it can protect the pressure-sensitive adhesive layer, but any liner known as a liner (release liner) for sheet masks can be used as appropriate. Materials for the liner according to the present invention include, for example, polyolefins such as polyethylene and polypropylene; ethylene-vinyl acetate copolymers, vinyl acetate-vinyl chloride copolymers, polyvinyl chloride, etc.; polyamides such as nylon; polyethylene terephthalate, etc. Examples include polyester; cellulose derivatives; synthetic resins such as polyurethane; films and sheets made of materials such as aluminum and paper; and laminates thereof. Such a liner is one that has been subjected to a release treatment such as a silicone-containing compound coat or a fluorine-containing compound coat on the side that contacts the adhesive layer so that it can be easily peeled off from the adhesive layer. It is preferable.

The method for manufacturing a sheet mask using the cosmetic of the present invention can employ a conventional method for manufacturing sheet masks, such as uniformly mixing and/or dissolving each component of the adhesive layer in a stirrer, This can be obtained by spreading this on a support and cutting it into a desired shape.
The sheet mask of the present invention can be applied to areas such as the face, chin, neck, elbows, and heels.

Hereinafter, the present invention will be specifically explained with reference to Examples. However, the present invention is not limited to the following examples.

1. Production of Sheet Mask A sheet mask having the composition shown in Table 1 was produced by a conventional method to obtain a sheet mask containing seaweed extract.

2. Storage stability test (1) Color of adhesive layer (a) Type of extract The sheet masks of Example 1 and Reference Example 2 were sealed in aluminum packaging bags and stored at 60°C for 3 weeks, then the packaging bags were opened. A change in the color of the adhesive layer was visually observed.
In Example 1, slight greenish brown coloring was observed. On the other hand, in Reference Example 2, the color was the same as that of the adhesive layer before storage, and no fading or discoloration was observed.

(b) Concentration of extract Next, the sheet masks of Examples 1, 2, and 3 were sealed in aluminum packaging bags and stored at 60°C for 2 to 4 weeks, and the packaging bags were opened every week. Regarding the change in color of the adhesive layer, the color difference ΔE was measured according to the following procedure.

[Measurement procedure]
(I) Using a spectrophotometric colorimeter (measuring device: CM-700d, manufactured by Konica Minolta Optics Co., Ltd.), the L ^* value, a ^* value, and b ^* value of each sheet mask immediately after manufacture were determined, and each L0 ^* , a0 ^* and b0 ^* .
(II) Using the spectrophotometer, the L ^* value, a ^* value, and b ^* value of each sheet mask opened every week was determined.
(III) The following formula:
ΔE ^* ab = {(L ^* - L0 ^* ) ² + (a ^{* -} a0 ^* ) ² + (b ^{* -} b0 ^* ) ² } ^1/2
The color difference (ΔE) from that immediately after manufacture was calculated.

The results are shown in Figure 1.
Examples 1 and 2 had a slightly greenish brown color. In Example 3, the color change was almost invisible. In all of Examples 1 to 3, the color difference ΔE was 5 or less, and it was evaluated that the products did not have any coloring problems, indicating that they had excellent storage stability.

(2) Adhesive strength The adhesive strength of the sheet masks of Example 2, Reference Example 1, and Reference Example 2 sealed in an aluminum packaging bag and stored at 60° C. was evaluated according to the following procedure.
(Rolling ball tack test)
It was measured by the Nichiban Rolling Ball method ("Adhesion Handbook" 14th edition, published by Kobunshi Kankokai, 1985). That is, the adhesive layer of the sheet mask from which the release liner layer has been removed is placed on the horizontal bottom under the sine-curved slope, and a No. 20 steel ball (20/32 in diameter) is placed on the inclined surface of the slope. The distance at which the ball stopped on the adhesive layer was measured, and this was defined as the ball stopping distance. Note that sheet masks with short ball stopping distances (mm) are recognized to have excellent adhesion.
The results are shown in Table 2.

(3) Summary The sheet mask of Example 2 was shown to have high storage stability since the adhesive strength did not decrease relatively even after the 4-week test at 60°C.

Claims (2)

A sheet mask comprising a support and an adhesive layer laminated on the support, wherein the adhesive layer contains seaweed extract as a skin beautifying ingredient and does not contain fragrance. The sheet mask according to claim 1, comprising 0.005% to 0.1% by mass of seaweed extract.