CN113116751A

CN113116751A - Composition of resident mask

Info

Publication number: CN113116751A
Application number: CN201911413588.2A
Authority: CN
Inventors: 王威程
Original assignee: Weima Precision Chemical Technology Co ltd
Current assignee: Weima Precision Chemical Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-07-16
Anticipated expiration: 2039-12-31
Also published as: CN113116751B

Abstract

The present invention relates to a composition of a leave-on facial mask, which comprises a film-forming agent (A), a moisturizing penetrant (B), a rheology modifier (C), a wetting agent (D) and water (E), wherein The film former (A) comprises polyurethane-35 (A-1). By controlling the amount of film-forming agent (A) used and the weight ratio of film-forming agent (A) to moisturizing penetrant (B), the mask thus formed provides a transparent appearance that remains good after a predetermined period of use The comfort, skin fit, peeling ease and moisturizing effect are excellent, and it can effectively isolate makeup and anti-adherent pollutants.

Description

Composition of resident mask

Technical Field

The present invention relates to a composition for a facial mask, and more particularly, to a composition for a leave-on facial mask that is transparent, easily removable, non-tight, and effectively isolates color cosmetics and resists attachment contaminants.

Background

Recently, people pay more attention to the health and beauty of the face, wherein the facial mask has the effects of moisturizing, whitening, cleaning and the like, and becomes a facial product which is popular among the public and is commonly used. Currently, commercially available facial masks include cleansing facial masks, patch facial masks, and peel-off facial masks, wherein the peel-off facial mask generally comprises polyvinyl alcohol (PVA)/polyvinyl pyrrolidone (PVP) as a main component.

While each of the aforementioned facial masks has many advantages, it still has disadvantages. For example, the cleansing mask cannot form a thin and uniform elastic film on the skin, and cannot isolate color cosmetics and anti-attachment contaminants. Moreover, the surface mount type mask has no transparent appearance, cannot be colored on the mask, and cannot isolate the color makeup and resist the attached pollutants. In addition, the PVA/PVP peel-off mask has a transparent appearance, but it is not suitable for long-term use because it has poor air permeability and a tight feeling, and easily causes damage to the keratin when peeled off, and is not resistant to adhering contaminants.

In view of the above, there is a need to develop a leave-on mask composition to improve the above-mentioned disadvantages of the conventional mask.

Disclosure of Invention

Therefore, in one aspect of the present invention, a leave-on mask composition is provided, in which the amount of the film forming agent (a) and the weight ratio of the film forming agent (a) to the moisturizing penetrant (B) are controlled, so that the formed mask provides a transparent appearance, maintains good comfort, skin-attachment degree, easy peeling and moisturizing effect after a predetermined period of use, and is capable of effectively isolating color cosmetics and anti-adhesion pollutants. In addition, the transdermal permeability of the active additive (G) is enhanced by the moisturizing penetrant (B) to enhance the efficacy of the active additive (G).

According to one aspect of the present invention, a leave-on mask composition is provided. The composition of the resident mask comprises a film forming agent (A), a moisturizing penetrating agent (B), a rheology modifying agent (C), a wetting agent (D) and water (E), wherein the film forming agent (A) comprises polyurethane-35 (A-1). The amount of the film forming agent (A) is more than 8 weight percent to less than 22 weight percent based on 100 weight percent of the total usage amount of the composition, and the weight ratio of the film forming agent (A) to the moisture-retention penetrant (B) is 2.4 to 12.

According to an embodiment of the present invention, the film-forming agent (a) is used in an amount of 10 to 20 wt%, based on 100 wt% of the total amount of the composition.

According to another embodiment of the present invention, the moisturizing penetrant (B) comprises polyoxyethyl polyoxypropylene polyoxybutyl glycerin.

According to still another embodiment of the present invention, the aforementioned moisture-retaining penetrant (B) is used in an amount of 0.5 to 5.5 weight percent based on the total used amount of the aforementioned composition being 100 weight percent.

According to still another embodiment of the present invention, the rheology modifier (C) comprises at least one polymer of acrylic acid and/or its derivatives.

According to another embodiment of the present invention, the rheology modifier (C) is used in an amount of 0.1 to 2 weight percent based on 100 weight percent of the total use amount of the composition.

According to another embodiment of the present invention, the wetting agent (D) is selected from the group consisting of liquid polyol, water-soluble alkoxylated nonionic polymer and any combination thereof.

According to another embodiment of the present invention, the wetting agent (D) is used in an amount of 5 to 8% by weight based on 100% by weight of the total amount of the composition.

According to another embodiment of the present invention, the composition of the leave-on mask optionally comprises a functional additive (F) and/or an active additive (G).

According to another embodiment of the present invention, the functional additive (F) is at least one selected from the group consisting of pH adjuster (F1), surfactant (F2), emollient (F3), antimicrobial agent (F4) and ethanol (F5), and the active additive (G) is at least one selected from the group consisting of whitening agent (G1), antioxidant (G2) and soothing agent (G3).

In conclusion, the composition of the leave-on mask is applied to the skin to form the leave-on mask, so that the transparent appearance is provided, after the leave-on mask is used for a preset period of time, the leave-on mask still keeps good comfort, skin-attaching degree, stripping easiness and moisturizing effect, and can effectively isolate color cosmetics and resist attached pollutants.

Drawings

For a more complete understanding of the embodiments of the present invention and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. It must be emphasized that the various features are not drawn to scale and are for illustrative purposes only. The content of the related drawings is as follows:

fig. 1A to 1F are photographs of mask compositions according to an embodiment of the present invention and some comparative examples applied to the face of a subject over 8 hours.

Fig. 2A and 2C are photographs of the stratum corneum of subjects according to an embodiment of the present invention and a comparative example, respectively, before coating with a mask composition.

Fig. 2B and 2D are photographs of the stratum corneum of the subject from fig. 2A and 2C after removing masks formed with one of the compositions of the examples and one of the compositions of the comparative examples, respectively.

Fig. 3A is a photograph of a permeable adhesive tape-coated lipstick and a foundation according to an embodiment of the present invention and a comparative example.

Fig. 3B is a photograph of a tissue immediately adjacent to the breathable tape of fig. 3A.

Fig. 4A is a photograph of pigskins according to an embodiment of the present invention and a comparative example after a nano powder adhesion resistance test.

FIG. 4B is a photograph of pigskins according to an embodiment of the present invention and a comparative example after being subjected to a carbon black adhesion resistance test.

FIG. 4C is a photograph of the slide glass of one embodiment of the present invention and one comparative example after sea sand adhesion resistance test.

FIG. 5A is a photograph of a cosmetic applied to the skin of an arm of a subject in accordance with one embodiment of the present invention.

Fig. 5B is a photograph of the skin of an arm of the subject according to fig. 5A after removal of the color cosmetic.

Fig. 6A is a photograph of the skin of an arm of a subject of some embodiments of the present invention and some comparative examples after treatment with a dihydroxyacetone solution.

Fig. 6B is a photograph of the skin of an arm of a subject according to fig. 6A, with or without the mask composition of some embodiments of the present invention and some comparative examples applied thereto.

Detailed Description

Applications of embodiments of the present invention are discussed in detail below. It should be appreciated, however, that the embodiments provide many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed are merely illustrative and do not limit the scope of the invention.

The invention provides a resident facial mask composition, which provides a transparent appearance by controlling the using amount of a film forming agent (A) of the composition and the weight ratio of the film forming agent (A) to a moisturizing penetrant (B), and can keep good comfort, skin adhesion, easy stripping and moisturizing effects after being used for a preset period of time, and can effectively isolate color cosmetics and resist attached pollutants. Further, because of good ease of removal, the mask is removed without causing damage to the skin cutin, and after the mask is wetted with a small amount of normal-temperature water, the mask can be removed while removing the color cosmetics on the mask. In addition, the transdermal permeability of the active additive (G) is enhanced by the moisturizing penetrant (B) to enhance the efficacy of the active additive (G).

The composition of the resident mask comprises a film forming agent (A), a moisturizing penetrating agent (B), a rheology modifying agent (C), a wetting agent (D) and water (E). The film-forming agent (A) referred to herein in the present invention means a water-based polymer. In some embodiments, the film former (A) includes, but is not limited to, Polyurethane-35 (Polyurethane-35) (A-1). Polyurethane-35 (A-1) is a commercially available product, for example, an aqueous polyurethane manufactured by Covestro, which is a copolymer synthesized from monomers such as adipic acid (adipic acid), dicyclohexylmethane diisocyanate (dicyclohexylmethane diisocyanate), ethylenediamine (ethylene diamine), hexanediol (hexane diol), neopentyl glycol (neopentyl glycol), and sodium N- (2-aminoethyl) -3-aminoethane sulfonate (sodium N- (2-aminoethyl) -3-aminoethane sulfonate).

According to an embodiment of the present invention, the film forming agent (a) is used in an amount of more than 8 wt% to less than 22 wt% based on 100 wt% of the total amount of the composition. When the amount of the film forming agent (a) used is 8% by weight or less, the mask film thus formed is not good in the ease of peeling. When the film forming agent (a) is used in an amount of 22% by weight or more, the resulting mask may be too thick, easily causing skin tightness and poor comfort. Preferably, the film forming agent (a) is used in an amount of 10 to 20 weight percent. More preferably, the film forming agent (A) is used in an amount of 12 to 15 wt%, so that the formed mask provides better comfort, skin-contacting ability, peeling easiness and moisturizing effect.

In the leave-on mask composition of the present invention, the moisturizing penetrant (B) referred to herein means a moisturizing agent that helps the active additive (G) penetrate into the skin and enhances the efficacy of the active additive (G) by increasing the solubility of the active additive (G) to the skin. In some embodiments, the moisturizing penetrant (B) includes, but is not limited to, polyoxyethylpolyoxypropylpolyoxybutylglycerol. Polyoxyethylated polyoxypropylpolyoxybutylglycerol is a compound obtained by adding polyoxyethylated, polyoxypropylated and polyoxybutylated to the three hydroxyl groups of glycerol. In one embodiment, the polyoxyethylated polyoxypropylene polyoxybutyl glycerol may be PEG/PPG/polybutyldiglycol-8/5/3 glycerol (PEG/PPG/polybutylene glycol-8/5/3 glycerol) (B).

According to an embodiment of the present invention, the weight ratio of the film forming agent (a) to the moisture-retaining penetrant (B) can be 2.4 to 12 based on the total usage amount of the composition being 100 weight percent. When the weight ratio of the film forming agent (A) to the moisturizing penetrant (B) is less than 2.4, the formed mask cannot be peeled off after being wetted by water or has sticky feeling. When the weight ratio of the film-forming agent (a) to the moisturizing penetrant (B) is greater than 12, the resulting mask may cause skin tightness to make the user feel uncomfortable. Preferably, the weight ratio of the film forming agent (A) to the moisture-retaining penetrant (B) is 2.4 to 5.

According to an embodiment of the present invention, when the amount of the film forming agent (a) is greater than 8 wt% and less than 22 wt% and the weight ratio of the film forming agent (a) to the film forming agent (a) is 2.4 to 12 based on 100 wt% of the total amount of the composition, the composition can form a transparent mask on the skin, and is rich in elasticity, thereby providing high skin-contact degree and good air permeability. In addition, after the facial mask is used for a preset period, the formed facial mask still keeps good comfort, skin adhesion degree, stripping easiness and moisturizing effect, and can effectively isolate color cosmetics and pollutants.

According to an embodiment of the present invention, the amount of the moisturizing penetrant (B) may be 0.5 to 5.5 wt% based on 100 wt% of the total amount of the composition. When the moisturizing penetrant (B) is used in an amount of 0.5 to 5.5 weight percent, the mask thus formed has a superior moisturizing effect. Preferably, the amount of the aforementioned moisture-retaining penetrant (B) used is 1 to 5 weight percent, and more preferably 3 weight percent.

In the composition of the leave-on mask, the rheology modifier (C) of the present invention is used to adjust the viscosity of the composition so that the composition can be uniformly applied to the face to form a thin and uniform mask, thereby providing a comfortable feeling of air permeability and a good skin-attachment degree when used. In some embodiments, the rheology modifier (C) comprises at least one of a polymer of acrylic acid and/or derivatives thereof. The acrylic acid derivative includes, but is not limited to, acrylic acid ester, salts of acrylic acid ester, alkyl acrylic acid having 10 to 30 carbon atoms, or acrylamide. In some embodiments, the aforementioned polymer may also comprise monomers of vinyl isodecanoate in addition to acrylic acid and/or its derivatives. Further, the aforementioned polymer may be a homopolymer or a copolymer, or the aforementioned polymer may be a crosslinked polymer.

In some embodiments, the rheology modifier (C) includes, but is not limited to, acrylate copolymer (acrylate copolymer), sodium polyacrylate (sodium polyacrylate), acrylic acid/alkyl acrylic acid cross-linked polymer having 10 to 30 carbon atoms (acrylates/C10-30 alkyl acrylate cross-linked polymer), methyl methacrylate cross-linked polymer (methyl methacrylate cross-linked polymer), hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer (hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer), acrylate/vinyl isodecanoate cross-linked polymer (acrylate/vinyl isodecanoate cross-linked polymer), acrylic acid/vinyl isodecanoate cross-linked polymer (acrylate/vinyl isodecanoate cross-linked polymer), or acrylamide/vinyl dimethylsulfonate VP copolymer (ammonium methacrylate/VP copolymer). In other embodiments, the rheology modifier (C) comprises a combination of at least two of the polymers described above.

According to an embodiment of the present invention, the rheology modifier (C) is used in an amount of 0.1 to 2 weight percent based on 100 weight percent of the total amount of the composition. When the rheology modifier (C) is used in an amount of 0.1 to 2 weight%, the mask thus formed is thin and uniform in thickness, and can provide a breathable comfort and good skin-attachment. Preferably, the rheology modifier (C) is used in an amount of 0.4 weight percent.

In the composition of the leave-on mask, the humectant (D) referred to herein of the present invention means a hydrophilic compound which helps to moisturize the mask when it is desired to remove the mask, so that the mask can be easily removed in whole piece. Accordingly, the composition of the leave-on mask of the present invention forms a mask that can be easily peeled off without pulling the skin.

In some embodiments, the wetting agent (D) is selected from the group consisting of liquid polyols, water-soluble alkoxylated nonionic polymers, and any combination thereof. The liquid polyol may include a polyol having 2 to 8 carbon atoms. For example, the liquid polyol can be ethylene glycol, propylene glycol, butylene glycol, pentylene glycol (pentamethylene glycol), 1, 2-hexylene glycol (1,2-hexanediol), octylene glycol (caprylyl glycol), decylene glycol (decylene glycol), glycerol, ethylhexylglycerol (ethylhexylglycerol), sorbitol, methylbenzyl alcohol (methylbenzyl alcohol), and maltitol. The water-soluble alkoxylated nonionic polymer may include, but is not limited to, polyglycerol, dipropylene glycol (dipropylene glycol), ethoxydiglycol (ethoxydiglycol), ethylhexylglycerol (ethylhexylglycerol), and the like. In other embodiments, the humectant (D) may optionally include, but is not limited to, hyaluronic acid, chitosan, trehalose, and β -glucan and sugar derivatives, among others.

According to an embodiment of the present invention, the humectant (D) is used in an amount of 5 to 8% by weight based on 100% by weight of the total amount of the composition. When the wetting agent (D) is used in an amount of 5 to 8 weight%, the mask formed therefrom can be entirely peeled off after being wetted with water to provide convenience in peeling off after use. Preferably, the wetting agent (D) is used in an amount of 5 weight percent.

In the composition of the leave-on mask of the present invention, the composition of the leave-on mask may optionally include a functional additive (F) and/or an active additive (G). The functional additive (F) referred to herein in the present invention means an additive capable of providing pH adjustment, emulsification, dispersion, dissolution, skin-moisturizing or antibacterial functions. In some embodiments, the functional additive (F) is at least one selected from the group consisting of a pH adjuster (F1), a surfactant (F2), an emollient (F3), an antimicrobial agent (F4), and ethanol (F5). The active additive (G) is an additive capable of providing whitening, antioxidant or allergy-relieving functions. In some embodiments, the active additive (G) is at least one selected from the group consisting of a whitening agent (G1), an antioxidant (G2), and a soothing agent (G3).

It is stated that the composition of the leave-on mask of the present invention can enhance the transdermal penetration of the active additive (G) through the moisturizing penetrant (B) to enhance the efficacy of the active additive (G).

The composition of the leave-on mask is applied directly to the facial skin, and the pH of the composition is adjusted to be close to the pH of the skin by using a pH adjusting agent (F1) to avoid irritation to the skin, wherein the pH of the composition may be 5 to 8, preferably 6 to 7. The pH adjusting agent (F1) includes, but is not limited to, small molecule organic amines, weak organic acids, or basic inorganic salts. Organic amines include, but are not limited to, basic amino acids or lower carbon amino alcohols. For example, the pH adjuster (F1) may be arginine (arginine), 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1, 3-propanediol, triethanolamine (triethanolamine), citric acid, or the like. Inorganic base salts include, but are not limited to, alkali metal salts. For example, alkali metal salts include, but are not limited to, sodium hydroxide or potassium hydroxide, and the like.

In the leave-on mask composition of the present invention, the surfactant (F2) can be used as an emulsifier, a solubilizer, a stabilizer, and the like. In some embodiments, the surfactant (F2) comprises an anionic surfactant and a nonionic surfactant.

In the present invention, the surfactant (F2) is not particularly limited, and any surfactant can be used as long as it can be added to a composition for a mask pack in a conventional manner. For example, anionic surfactants include, but are not limited to, sodium stearyl glutamate (sodium stearyl glutamate), potassium cetyl phosphate (potassium cetyl phosphate), phosphate salts, and the like. Specific examples of the phosphate ester salt include lecithin (hydrogenated lecithin), hydroxylated lecithin (hydrogenated lecithin), and hydrogenated lecithin (hydrogenated lecithin), which is hydrogenated lecithin and has appropriate skin adhesion and dispersibility in water, so that hydrogenated lecithin can increase the ease of removing a facial mask formed from the composition by hand.

For example, nonionic surfactants include, but are not limited to, sorbitan fatty acid esters, sorbitol fatty acid esters, alkyl ethers, and the like. Specific examples of the fatty acid ester include hydrogenated ethylhexyl oleate and hydrogenated olive oil unsaponifiables. Hydrogenated olive oil ethylhexyl oleate and hydrogenated olive oil unsaponifiables may be used as emulsifiers to aid in the emulsification of the oily molecules added to the composition.

Among the functional additives (F), the emollient (F3) can moisturize the skin, thereby making the skin tender. There are some emollients (F3) that can act as moisture blocking agents. When the emollient (F3) forms a protective film on the outer layer of the stratum corneum of the skin, the protective film prevents water loss, thereby making the skin tender and bright.

In the present invention, the emollient (F3) is not particularly limited, and any emollient known to be added to a composition for a facial mask may be used. In some embodiments, emollients (F3) include, but are not limited to, fatty acids and esters thereof, cholesterol (cholestrol) and ester or amino acid derivatives thereof, hyaluronic acid and salts thereof, and like compounds. In some embodiments, the emollient (F3) includes, but is not limited to, natural extracts of animals and/or plants. For example, the emollient (F3) may be caprylic/capric triglyceride (caprylic/capric triglyceride), jojoba oil, aloe vera extract, sodium hyaluronate, collagen, and the like.

Among the functional additives (F), the antibacterial agent (F4) prevents or reduces the formation of skin blisters, inflammation or redness by killing or inhibiting the growth and/or number of bacteria that cause skin blisters and/or inflammation.

In the present invention, the antibacterial agent (F4) is not particularly limited, and any antibacterial agent that can be added to a composition for a mask in a conventional manner can be used. In some embodiments, the antimicrobial agent (F4) includes, but is not limited to, synthetic compounds and/or natural plant extracts.

For example, the above-mentioned artificially synthesized compound may be benzalkonium chloride, triclocarban, triclosan (triclosan), isopropylmethylphenol (isopropylmethylphenol), benzoyl peroxide, salicylic acid (salicylic acid), 2-bromo-2 nitropropane-1,3 diol, iodopropynyl butylcarbamate, sodium hydroxymethylglycinate, diazolidinyl urea, triclocarban (triclocarban), parachlorometaxylenol (chloroxylenol), climbazole (climbazole), piroctone olamine (piroctone olamine), zinc pyrithione (zinc pyrithione), sulfur (sulfur), and the like. For example, the natural plant extract can be tea tree essential oil, eucalyptus essential oil, mint extract, poplar bark extract (populus tremuloides bark extract), farnesol (farnesol), and yarrow extract.

In some embodiments, the antimicrobial agent (F4) includes, but is not limited to, propolis or leuconostoc/radish root fermentation filtrate (leuconostoc/radish root supplement filtrate) and the like. In other embodiments, a plurality of embodiments of the antimicrobial agent (F4) described above may be used in combination.

Among the active additives (G), the whitening agent (G1) is used to prevent, inhibit and/or reduce the generation and/or precipitation of melanin in the skin, thereby achieving a whitening effect. The whitening effect referred to herein means an evaluated whitening effect in which the skin is treated with 30% dihydroxyacetone (dihydroyacetone) solution for 40 minutes, then the horny layer is sufficiently browned, the composition of the leave-on mask is applied, the composition is peeled off after 8 hours, the skin is continuously processed for 5 days at a frequency of once a day, and then the skin melanin content and L value of the skin are measured using a skin black/red pigment probe and a skin tone probe to obtain Individual Type Angle (ITA), and the melanin content, L value and change rate of ITA are calculated.

In the present invention, the whitening agent (G1) is not particularly limited, and any whitening agent that can be added to a composition for a mask can be used. In some embodiments, the whitening agent (G1) includes, but is not limited to, synthetic compounds and/or natural plant extracts. For example, the whitening agent (G1) may be nicotinamide (nicotinamide), tranexamic acid (tranexamic acid), potassium4-methoxysalicylate (potassium4-methoxysalicylate), and the like.

Among the active additives (G), the antioxidant (G2) can reduce free radicals, thereby preventing skin from being damaged by the free radicals to thereby produce an anti-aging effect and keep the skin young.

In the present invention, the antioxidant (G2) is not particularly limited, and any antioxidant that can be added to a composition for a mask pack in a conventional manner can be used. In some embodiments, the antioxidant (G2) includes, but is not limited to, a synthetic compound and/or a natural plant extract.

For example, the synthetic compound may be retinol (retinol), Butylated Hydroxytoluene (BHT), Butylated Hydroxyanisole (BHA), tocopheryl acetate (tocopheryl acetate), propyl gallate, tocopherol, t-butylhydroquinone, ascorbic acid (vitamin C), dilauryl thiodipropionate, and the like. The natural plant extract can be Coicis semen extract, fructus Pruni Pseudocerasi extract, and grape seed extract.

The soothing agent (G3) is used for relieving skin allergic reaction such as red swelling or stabbing pain caused by irritation. In some embodiments, the soothing agents (G3) include, but are not limited to, bisabolol and ginger root extract, oat meal extract (oat) meal extract, mung bean seed extract (phaseolus radiatus seed extract), and the like.

In addition to the above-mentioned components, in some embodiments, the composition of the leave-on mask of the present invention may optionally include, but is not limited to, a preservative, a metal chelator, a pigment or perfume, and the like.

For example, without limiting the scope of the present invention, the preservative may be paraben (paraben), hydroxychloroaniline, phenoxyethanol (phenoxythane), benzyl alcohol (benzyl alcohol), benzoic acid (benzoic acid), sodium benzoate (sodium benzoate), imidazolidinyl urea (imidazolidinyl urea), 1,3-dimethylol-5,5-dimethylhydantoin (1,3-dimethylol-5,5-dimethylhydantoin, DMDM hydantoin), formaldehyde (formaldehyde), sorbic acid, chlorphenesin (chlorophenol), methylchloroisoxazole ketone (methylchlorothiozolinone), 2-bromo-2-nitro-1, 3-propanediol (2-bromopropane-2-nitro-1, 3-diol), potassium hexadiene (potassium hexadimethacrylate), propynodiamide (n-butyl carbamate), and the like. The metal chelating agent may be ethylenediaminetetraacetic acid (EDTA) or the like. The pigments may be synthetic pigments and/or natural pigments, and all legal cosmetic pigments, for example, may be used in the present invention. The perfume may be an artificially synthesized perfume and/or a natural perfume. Specific examples of the perfume include rose essence, lavender essence, lily essence, and the like.

By controlling the usage amount of the film forming agent (A) of the composition within the range of more than 8 weight percent to less than 22 weight percent and the weight ratio of the film forming agent (A) to the moisturizing penetrant (B) within the range of 2.4 to 12, the formed mask has a transparent appearance, after being used for a preset period of time, after evaluation, the mask can really provide good comfort, skin-sticking degree, easy stripping and moisturizing effects, and can effectively isolate color cosmetics and resist attached pollutants.

The aforementioned preset period of the present invention refers to a preset period of time that passes after the composition of the leave-on mask is applied to the face. In some embodiments, the predetermined period may be 6 hours to 12 hours. Preferably, the predetermined period may be 8 hours.

The following examples are provided to illustrate the present invention, but not to limit the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention.

Example 1

In example 1, 0.3% by weight of acrylic acid (ester)/vinyl isodecanoate crosslinked polymer (C-1), 0.1% by weight of acrylic acid/alkyl acrylic acid crosslinked polymer having 10 to 30 carbon atoms (C-2), 5% by weight of dipropylene glycol (D-1), 0.02% by weight of citric acid (F1-2) and 70.3% by weight of water (E) were mixed and stirred to form a uniformly dispersed aqueous solution, and 3% by weight of PEG/PPG/polybutyl glycol-8/5/3glycerin (B) (trade name: S-753, manufactured by Nichikogaku corporation (WILBRIDE)), 2% by weight of nicotinic amide (G1-1), 2% by weight of hyaluronic acid (G1-2), 1% by weight of bisabolol and ginger root extract (G3-1 and G3-2) 0.18 weight percent arginine (F1-1) and 1 weight percent hydrogenated olive oil ethylhexyl oleate/hydrogenated olive oil unsaponifiable matter (F2-1) are added to the stirred aqueous solution and mixed uniformly. On the other hand, 5 weight percent of ethanol (F5) and 0.1 weight percent of isopropyl methyl phenol (F4) were mixed and stirred to form a transparent antibacterial solution, and then, slowly added to the aforementioned aqueous phase solution while stirring. After the uniform mixing, 10 weight% of polyurethane-35 (A-1) (trade name: C1004, manufactured by Cordsura) was added and the stirring was continued until homogeneous to obtain the mask composition of example 1.

Examples 2 to 7 and comparative examples 1 to 5

Examples 2 to 7 and comparative examples 1 to 5 were prepared in the same manner as in example 1. Except that the amount of the polyurethane-35 (A-1) used in examples 2 to 4 and comparative examples 1 to 2 was different from that used in example 1. The amounts of polyurethane-35 (A-1) and PEG/PPG/polybutanediol-8/5/3 glycerin (B) used in examples 5 to 6 and comparative example 4 were different from those in example 1. The amount of polyurethane-35 (A-1) used in example 7 was different from that in example 1, and acrylic acid/vinyl isodecanoate crosslinked polymer (C-1) and acrylic acid/alkyl acrylic acid crosslinked polymer having 10 to 30 carbon atoms (C-2) were replaced with hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer (C-4). The amount of polyurethane-35 (A-1), PEG/PPG/polybutyldiglycol-8/5/3 glycerin (B) and dipropylene glycol (D-1) used in comparative example 3 were different from those in example 1. Comparative example 5 polyurethane-35 (A-1) was replaced with polyvinyl alcohol (A-2) and polyvinylpyrrolidone (A-3). Specific conditions for examples 2 to 7 and comparative examples 1 to 5 are shown in table 1.

Example 8

Example 8 was formulated in the same manner as in example 1. Except that the polyurethane-35 (A-1) of example 8 was used in an amount different from that of example 1, and glycerin (D-2), caprylic/capric triglyceride (F3-1), methyl methacrylate crosspolymer (C-3), retinol (G2-1), hydrogenated lecithin (F2-2), cholesterol (F3-2), butylated hydroxytoluene (G2-2), tocopherol acetate (G2-4), mung bean seed extract (G3-3), butylated hydroxyanisole (G2-3) and oat meal extract (G3-4) were added. Specific conditions for example 8 are shown in table 1.

Examples 9 to 10 and comparative examples 6 to 7

Examples 9 to 10 and comparative examples 6 to 7 were prepared in the same manner as in example 8. Except that the amount of PEG/PPG/polybutyldiglycol-8/5/3 glycerol (B) used in examples 9 to 10 and comparative example 6 was different from that used in example 8. The amount of PEG/PPG/polybutyldiglycol-8/5/3 glycerin (B) and the amount of dipropylene glycol (D-1) used in comparative example 7 were different from those in example 8. Specific conditions for examples 9 to 10 and comparative examples 6 to 7 are shown in table 1.

Comparative example 8

Comparative example 8 was a patch-type mask using a product name of the skin research PHOTO super-moist perfect high moisturizing multi-effect mask manufactured by Manxiella corporation (or as a Hadalab moisturizing gel mask, https:// jp.rohto. com/hadaro/rich-gokujun-perfect-mask /), and was a skin patch-type mask.

TABLE 1

1. Comfort feeling

The comfort referred to herein is the application of the mask compositions of examples 1 to 7 and comparative examples 1 to 5 to the face of a subject, 50 subjects of each of the examples and comparative examples were subjected to a comfort test. After the lapse of eight hours, evaluation was performed according to the subjective feeling of the facial skin of the above subjects, and specific evaluation criteria are as follows, and the results thereof are shown in table 2.

And 5, point: very high comfort

And 4, point: high comfort

And 3, point: general purpose

And 2, point: low comfort

Point 1: very low comfort

2. Degree of skin adherence

The mask compositions of examples 1 to 7 and comparative examples 1 to 5 were applied to the face of a subject, and 50 subjects of each of the examples and comparative examples were subjected to a skin-contact test. After the lapse of eight hours, the degree of adhesion of the mask to the skin was observed for evaluation, and specific evaluation criteria thereof were as follows, and the results thereof are shown in table 2 and fig. 1A to 1F.

And 5, point: the adhesive force is very high, and the edge of the mask does not have any tilting

And 4, point: high adhesion, slight edge turning and warping of facial mask

And 3, point: the adhesion degree is normal, and the mask is partially peeled off

And 2, point: low adhesion and obvious peeling off of the mask

Point 1: very low adhesion and complete exfoliation of the mask

3. Ease of stripping

The ease of peeling referred to in the present invention is a test in which the mask compositions of examples 1 to 7 and comparative examples 1 to 5, each of which has 50 subjects, were applied to the face of the subjects. After eight hours had elapsed and was wetted with water, the mask film was peeled off by hand, and evaluated according to the easiness of peeling off the mask film, the completeness of peeling off the mask film, and the presence or absence of residue after peeling off the mask film, and specific evaluation criteria thereof are as follows, and the results thereof are shown in table 2.

And 5, point: when the mask is peeled off, the mask is not broken and can be peeled off in one piece

And 4, point: when the mask is peeled off, the mask is slightly broken but still can be peeled off in one piece

And 3, point: when the film is peeled off, the film is broken and needs to be torn off for many times

And 2, point: when the mask is stripped, the mask is broken and the residue of crumbles is generated, and the mask needs to be stripped for many times

Point 1: when the mask is peeled off, the mask is broken into crumbs which remain on the face and cannot be removed in a sheet shape

4. Moisturizing effect

The moisturizing effect of the invention is tested by 12 subjects and a double-blind test method is adopted. After the subjects washed their faces with clean water, the skin was acclimatized in a room of controlled temperature (24 ℃ to 26 ℃) and humidity (50% to 60%) for 30 minutes, and then the moisture content of the stratum corneum on both sides of the subject's cheek was measured using an epidermal moisture meter (Corneometer CM825, Courage-Khazaka electronic GmbH, germany) in arbitrary capacitance units (a.c.u). Next, the composition of example 2 was applied to the face of the subject to form a mask having a thickness of about 0.2 mm. After eight hours, the mask was removed after wetting with water. After acclimatizing the skin in the acclimatization manner described above, the water content of the stratum corneum on both sides of the cheek of the subject was measured again. Then, the percentage (%) increase in the moisture content of the horny layer with respect to the amount before the application of the above-mentioned composition was calculated, and the moisturizing effect was expressed as the percentage increase in the moisture content, and the moisturizing effects of the compositions of example 5, example 6, comparative example 3 and comparative example 4 were measured in the same manner, and the results are shown in table 2.

TABLE 2

Referring to table 2 and fig. 1A to 1F, table 2 shows the results of the above-described evaluation tests of comfort, skin-fit, peeling easiness and moisturizing effect, and fig. 1A to 1B, 1C to 1D and 1E to 1F are photographs of the mask compositions of example 2, comparative example 3 and comparative example 5 of the present invention applied to the face of a subject over 8 hours, respectively.

Table 2 shows: the composition of example 2, which was 12 weight percent polyurethane-35 (A-1), formed a mask having better ease of peeling than the composition of comparative example 1, which was 8 weight percent polyurethane-35 (A-1). The composition of example 2, 12 weight percent polyurethane-35 (A-1), provided a mask with better comfort than the composition of comparative example 2, 22 weight percent polyurethane-35 (A-1). Compared with the compositions of comparative examples 3 and 4 without PEG/PPG/polybutyl glycol-8/5/3glycerin (B), the compositions of examples 2, 5 and 6 with PEG/PPG/polybutyl glycol-8/5/3glycerin (B) have better comfort, skin-close, peeling-off and moisture-keeping effects, wherein the effect of using 3 weight percent of example 2 is better overall.

5. Degree of damage to stratum corneum

The degree of cutin damage referred to herein is that the mask compositions of example 2 and comparative example 5 were applied to the face of a subject, and after eight hours, the mask formed from the mask composition of example 2 was wetted with water, and then was manually peeled off, and the mask formed from the mask composition of comparative example 5 was directly peeled off by hand. The stratum corneum on the skin surface before application of the mask composition and after removal of the mask was observed under a microscope and evaluated according to the appearance of the stratum corneum, and specific evaluation criteria are as follows, and the results are shown in table 3 and fig. 2A to 2D.

O: the horny layer has smooth appearance and is not damaged

Gamma rays: the stratum corneum has rough appearance and damaged stratum corneum

6. Isolation effect

The isolation effect referred to in the present invention is to simulate skin having capillary pores with a breathable tape (manufactured by taiwan minnesota mining manufacturing company, and named 3M breathable tape), coat the mask composition of example 2 and the mask covering comparative example 8 on one side of the breathable tape, and leave the area not coated with the mask composition as a blank group. After the mask was formed, lipstick and foundation were coated on the mask and the tape not coated with the mask composition, and the mask formed with the mask composition of example 2 and the mask of comparative example 8 were evaluated for the effect of separating color cosmetics according to the penetration of lipstick and foundation from the air permeable tape to the paper towel after 90 minutes, and the results are shown in table 3 and fig. 3A to 3B.

O: after application, the lipstick and foundation did not penetrate into the paper towel

Gamma rays: after application, the lipstick and foundation penetrated into the paper towel

7. Resistance to adhesion

The anti-adhesion property of the present invention is to apply the mask composition of example 2, the mask of comparative example 8 and the oil-in-water emulsion on the pigskin simulating human skin, then apply silica nanopowder and carbon black on the pigskin, remove the non-adhered nanopowder by shaking and remove the non-adhered carbon black by a blower, and evaluate the anti-adhesion property of the mask formed by the mask composition of example 2 and the mask of comparative example 8 on the nanopowder and the carbon black according to the amount of the nanopowder and the carbon black adhered on the pigskin. The aforementioned emulsion-coated pigskin represents skin coated with emulsion only and is indicated in the emulsion group. In addition, the anti-adhesion property of the facial mask formed from the facial mask composition of example 2 and the facial mask of comparative example 8 to sea sand was evaluated by using a glass slide instead of pig skin and sea sand instead of nano powder, and specific evaluation criteria thereof are as follows, and the results thereof are shown in table 3 and fig. 4A to 4C.

O: the nano powder, the carbon black or the sea sand are not easy to be attached to the pigskin or the glass slide, and almost no nano powder, the carbon black or the sea sand are attached to the pigskin or the glass slide

Gamma rays: the nanometer powder, carbon black or sea sand is easy to be attached on the pigskin or the glass slide, and a large amount of the nanometer powder, carbon black or sea sand is attached on the pigskin or the glass slide

8. Ease of removal of color cosmetics

The ease of removal of the color cosmetic as referred to herein is the application of the mask composition of example 2 to the skin of the arm of the subject. After the mask was formed, color cosmetics were applied to the formed mask and the uncoated skin (representing blank group). After the treatment of removing the makeup, the easiness of removing the makeup was evaluated according to the residue of the makeup, in which example 2a little water at normal temperature was sprayed on the mask, after the mask was wetted, the mask was peeled off and the makeup was removed by hand, and the blank group used a large amount of water to clean the makeup. Specific evaluation criteria are as follows, and the results are shown in table 3 and fig. 5A to 5B.

O: has no color cosmetic residue

Gamma rays: the color cosmetics are still remained and are hardly removed

TABLE 3

Evaluation test	Example 2	Comparative example 5	Comparative example 8	Blank group	Emulsion group
						Degree of damage to keratin	○	╳
Isolation effect	○		╳	╳
						Adhesion resistance of nanopowders	○		╳	╳
Resistance to adhesion of carbon black	○		╳		╳
						Of sea sandResistance to adhesion	○		╳	╳
Ease of removal of color cosmetics	○			╳

Referring to table 3 and fig. 2A to 2D, fig. 2A and 2C are photographs of the horny layer of the subjects of example 2 and comparative example 5 before applying the mask composition, respectively, and fig. 2B and 2D are photographs of the horny layer of the subjects of fig. 2A and 2C after peeling off the masks formed by the mask compositions of example 2 and comparative example 5, respectively. The results show that: the composition of polyurethane-35 (A-1) of example 2 formed a mask having a lower degree of damage to the stratum corneum than the polyvinyl alcohol/polyvinylpyrrolidone composition of comparative example 5.

Referring to table 3 and fig. 3A to 3B, fig. 3A is a photograph of the air-permeable tape-coated lipstick (upper block) and the foundation (lower block) of example 2 and comparative example 8, and fig. 3B is a photograph of the paper towel adjacent to the air-permeable tape of fig. 3A absorbing the lipstick and the foundation permeated from the air-permeable tape. The tissue portion of example 2 did not allow penetration of lipstick and foundation, while the tissue portion of comparative example 8 showed penetration of lipstick and foundation, and the results showed that: the composition of polyurethane-35 (a-1) of example 2 formed a mask having effective makeup-removing efficacy compared to the patch mask of comparative example 8.

Please refer to table 3 and fig. 4A to 4C, wherein fig. 4A is a photograph of the pigskins of example 2 and comparative example 8 after the nano powder adhesion resistance test, fig. 4B is a photograph of the pigskins of example 2 and comparative example 8 after the carbon black adhesion resistance test, and fig. 4C is a photograph of the glass slides of example 2 and comparative example 8 after the sea sand adhesion resistance test. In fig. 4A to 4C, the pigskin of example 2 adheres less nano-powder and carbon black, and the glass slide of example 2 adheres less sea sand.

The foregoing results show that: compared with the patch type facial mask of comparative example 8, the facial mask formed by the leave-on facial mask composition of example 2 has good anti-adhesion effect on nano powder, carbon black and sea sand.

Please refer to table 3 and fig. 5A to 5B, wherein fig. 5A is a photograph of arm skin of the subject of example 2 with color makeup (left side) and an arm skin without a mask (right side). FIG. 5B is a photograph of the cosmetic composition of FIG. 5A after removal. Fig. 5A shows that a color cosmetic was applied to the mask formed by the mask composition of example 2 without tingling, and the color cosmetic on the mask had the same cosmetic feel as the color cosmetic on the skin. In addition, the color cosmetics on the mask can be removed while the mask is removed after the mask is wetted with a little water at normal temperature. As described above, since the mask of example 2 has good ease of removal and can effectively isolate the color cosmetics, the color cosmetics can be easily and completely removed while the mask is removed. The skin without the mask was washed with water, but the color cosmetics could not be removed by washing with a large amount of water. The foregoing results show that: the mask composition of example 2 formed a mask with good ease of removal of color cosmetics.

9. Whitening effect

Whitening effect test whitening effects of the compositions of examples 8 to 10, and comparative examples 6 to 7, with or without coating, were evaluated with 4 subjects. The skin of the arm of the subject was washed with 12% Sodium Lauryl Ether Sulfate (SLES) foam cleanser and then applied to an area of 2cm²Applying 30% dihydroxyacetone solution to the skin of the arm for 40 minutes, rinsing with clear water, and waiting for 24 hours to allow the skin to standThe cutin of (a) was sufficiently browned to simulate a tanned condition of the skin, the appearance of which is shown in figure 6A. Then, the epidermal melanin content and L value of the skin of the subject were measured with a skin black/red pigment probe (Mexameter MX18, Courage-Khazaka electronic GmbH, Germany) and a skin tone probe (Colorimeter CL400, Courage-Khazaka electronic GmbH, Germany), and the Individual Type Angle (ITA) was calculated as the data of "before treatment" of the skin.

The skin black/red pigment probe measures the amount of light reflected by the skin after light of a known amount of light of a specific wavelength is irradiated on the skin to obtain the amount of light absorbed by the skin, and expresses the melanin content as it is in arbitrary colorimeter units (arbitrary mexmeter units).

ITA is a skin color measurement index established based on CIE (international commission on illumination) L a b color space, wherein the higher the ITA is, the better the whitening effect is, and the ITA can be calculated by the following formula (I): ITA (degree) { Arc Tangnt [ (L-50)/b ] } × 180/pi (I)

The value of L represents the lightness and darkness, and the value is from 0 (black) to 100 (white)

b value represents yellow/blue luminosity

Then, the compositions of examples 8 to 10 and comparative examples 6 to 7 were applied to the skin of the subject to form a mask, wherein the amount of the composition applied was 120mg, and the mask was peeled off after 8 hours. After continuously performing the treatment once a day for 5 days, the epidermal melanin content and L value of the skin of the subjects with and without the applied mask were measured, and ITA was calculated as data of "after treatment" of the skin, and the change rates of the melanin content, L value, and ITA were calculated to evaluate the whitening effects of the examples and comparative examples. The results are shown in table 4, while the appearance of the treated skin is shown in fig. 6B.

Regarding the melanin content, the L value and the change rate of ITA, the calculation method is shown in formula (II):

please refer to table 4, fig. 6A and fig. 6B, wherein table 4 is the results of the above whitening effect test, fig. 6A is a photograph of the arm skin of the subject after being treated with dihydroxyacetone solution, and fig. 6B is a photograph of the arm skin of the subject according to fig. 6A after being coated or not coated with the compositions of example 8 to example 10 and comparative example 6 to comparative example 7.

TABLE 4

Table 4, fig. 6A and fig. 6B show: the compositions of examples 8, 9 and 10 to which PEG/PPG/polybutyldiglycol-8/5/3 glycerin (B) were added had better whitening effects on the skin of the arm of the subject than the compositions of comparative examples 6 and 7 to which PEG/PPG/polybutyldiglycol-8/5/3 glycerin (B) was not added, wherein the whitening effect was more preferable at the amount of 3 wt% of example 8. This shows that PEG/PPG/polybutyl glycol-8/5/3glycerin (B) can enhance the whitening effect of tranexamic acid (G1-2) and retinol (G2-1) in the composition of the leave-on mask of the present invention.

In summary, by controlling the usage amount of the film forming agent (a) and the weight ratio of the film forming agent (a) to the moisturizing penetrant (B), the resident mask formed by the composition of the resident mask of the present invention can provide good comfort, skin-adhering degree, easy peeling and moisturizing effect after being used for a predetermined period of time, and can effectively isolate color cosmetics and resist adhering pollutants. Further, because of good ease of removal, the mask is removed without causing damage to the skin cutin, and after the mask is wetted with a small amount of water at normal temperature, the mask can be removed while removing the color cosmetics on the mask. In addition, the composition of the leave-on mask of the present invention can enhance the transdermal penetration of the active additive (G) through the moisturizing penetrant (B), thereby contributing to the enhancement of the efficacy of the active additive (G).

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A leave-on mask composition comprising:

a film former, wherein the film former comprises polyurethane-35;

a moisture-retaining penetrant;

a rheology modifier;

a wetting agent; and

water, and

wherein the total usage amount of the composition is 100 weight percent, the usage amount of the film forming agent is more than 8 weight percent to less than 22 weight percent, and the weight ratio of the film forming agent to the moisturizing penetrant is 2.4 to 12.

2. The composition of claim 1, wherein the film-forming agent is used in an amount of 10 to 20 weight percent, based on 100 weight percent of the total composition.

3. The composition of claim 1, wherein the moisturizing penetrant comprises polyoxyethyl polyoxypropylene polyoxybutyl glycerin.

4. The composition of claim 1, wherein the amount of the moisturizing penetrant is 0.5 to 5.5 weight percent based on 100 weight percent of the total usage of the composition.

5. The composition of claim 1, wherein the rheology modifier comprises at least one of a polymer of acrylic acid and/or derivatives thereof.

6. The composition of claim 1, wherein the rheology modifier is used in an amount of 0.1 to 2 weight percent based on 100 weight percent of the total composition.

7. The composition of claim 1, wherein the wetting agent is selected from the group consisting of liquid polyols, water-soluble alkoxylated nonionic polymers, and any combination thereof.

8. The composition of claim 1, wherein the humectant is used in an amount of 5 to 8 weight percent, based on 100 weight percent of the total composition.

9. The composition of claim 1, further comprising a functional additive and/or an active additive.

10. The composition of claim 9, wherein the functional additive is selected from at least one of the group consisting of a pH adjuster, a surfactant, an emollient, an antimicrobial, and ethanol, and the active additive is selected from at least one of the group consisting of a whitening agent, an antioxidant, and a soothing agent.