TWI819161B - Hydrogel mask composition, hydrogel mask prepared by using the same and method for preparing the hydrogel mask - Google Patents

Abstract

The present invention discloses a hydrogel facial mask composition, a hydrogel facial mask prepared using the same, and a method for preparing the same. By applying an emulsified emulsion containing nano-sized particles, it can be different from the existing one. The emulsified particles are released from the hydrogel having a network structure to form an oil-moisturizing film on the skin, thereby improving the skin's moisturizing retention, nutritional feeling, and skin elasticity. The hydrogel mask composition includes a nano-sized emulsified emulsion comprising a water, an emulsifier and at least one of oil and butter; and a gelling agent.

Description

Hydrogel facial mask composition, hydrogel facial mask made using the composition, and method for preparing hydrogel facial mask

The present invention relates to a hydrogel facial mask used as a beauty product, and more specifically to a hydrogel facial mask composition, a hydrogel facial mask made using the composition, and a method for preparing a hydrogel facial mask. , by applying an emulsified lotion containing nano-sized particles, unlike conventional emulsified particles, the emulsified particles can be released from the hydrogel with a network structure to form an oil (oil/butter) moisturizing film on the skin. This can improve the skin's moisture retention, nourishment and skin elasticity.

Cosmetic mask towels are prepared by adding lotion or various well-known functional ingredients to a base sheet of non-woven material. They provide the following effects: relieving skin tension, moisturizing the skin, improving elasticity, and soothing the skin. Fine lines, removal of metabolites and adsorbed pollutants on the skin surface, removal of long-standing cutin, removal of excess sebum, improvement of smoothness, psychological stabilization, and supply of nutrients, etc. This is in line with the desire of people who want to maintain clean and healthy skin, so facial mask towels are on the market. The market is gradually growing, and the risk of skin damage caused by environmental pollution has attracted attention, and its market size has grown more rapidly recently.

However, in the case of a dosage form in which the base sheet of the nonwoven fabric material is moistened with additives such as lotion to induce continuous absorption of the lotion, there is a problem that all the water evaporates after 10 to 15 minutes after use, and the lotion cannot be absorbed. The beauty ingredients contained in it effectively penetrate into the skin, or the tablets easily fall off the face. In addition, in order to prevent the lotion from dripping, a large amount of moisturizing agents such as glycerin should be added to increase the viscosity. However, although this has a moisturizing effect, excessive use will deprive the skin of moisture and hinder skin breathing, and also has the effect of causing irritation. Disadvantages of rough skin and enlarged pores.

Therefore, in order to overcome the above-mentioned shortcomings of the base sheet made of nonwoven fabric, facial mask sheets using hydrogel (Hydrogel) with improved moisture retention capacity have recently attracted a lot of attention. Hydrogel is a substance with a three-dimensional hydrophilic polymer network structure using pure water as the dispersion medium. It contains a large amount of water and exhibits flexibility like natural tissue. Therefore, it is used in various industries such as medicine, beauty, and environmental industries. Active research and development is ongoing in the field. In particular, hydrogels have a similar structure to the human cell matrix and are inert, have excellent elasticity, excellent permeability of oxygen and nutrients, and exhibit excellent biocompatibility, so they are used in the pharmaceutical and beauty industries. got more attention. Among them, in the beauty field, hydrogel masks are being developed that take advantage of the elasticity, skin adhesion, water retention (moisturizing feeling), coolness, and soft touch of hydrogel, and By adjusting the types and contents of ingredients used, various moisturizing and nutrient supplying or exfoliating effects can be enhanced.

As mentioned above, existing hydrogel masks are mixed with natural gums. Coagulants, polysaccharides and various cosmetic compositions are prepared by heating and cooling. Due to the above advantages, the frequency of their use has a tendency to gradually increase. However, existing hydrogel masks have a moist feel but have a reduced moisturizing feel and poor moisturizing retention. Therefore, it is cumbersome to apply essence and cream after use. In order to improve this shortcoming, emulsified hydrogels containing oil have been developed. However, micron-sized oil components are not released from the inside of the hydrogel and are difficult to transmit to the skin, and there are limitations in improving moisturizing retention. Therefore, there is a need to research and develop a new hydrogel mask that can improve the problem of moisturizing retention after use as described above and improve skin health.

Therefore, the object of the present invention is to provide a hydrogel facial mask composition, a hydrogel facial mask made using the composition, and a method for preparing a hydrogel facial mask, by applying an emulsion containing nanoscale particles, thereby Unlike the conventional ones, emulsified particles can be released from the hydrogel with a network structure to form an oil (oil/grease) moisturizing film on the skin, thereby improving the skin's moisture retention, nourishment, and skin elasticity.

In order to achieve the above object, the present invention provides a hydrogel facial mask composition comprising: a nano-sized emulsion containing at least one of oil and grease, water and an emulsifier; and a gelling agent.

In addition, the present invention provides a hydrogel facial mask, which is characterized by comprising: a tablet-type hydrogel with a network structure; and a nano-sized emulsified emulsion loaded with After being inside the hydrogel and adhering to the skin, the nanoemulsified emulsion is released from the inside of the hydrogel to the skin.

In addition, the present invention provides a method for preparing a hydrogel mask, which includes: (a) dissolving an oily component to prepare an oily part; (b) dissolving a watery component and then adding an emulsifier to prepare a watery part. Steps; (c) the step of mixing the prepared oily part and the watery part; (d) the step of emulsifying the mixture of the oily part and the watery part to prepare a nanoemulsion emulsion; (e) After heating the prepared nanoemulsified emulsion, adding a gelling agent and a solvent to prepare a hydrogel solution loaded with the nanoemulsified emulsion; and (f) treating the prepared nanoemulsified emulsion loaded with The emulsion hydrogel solution undergoes a cooling step.

According to the hydrogel facial mask composition of the present invention, the hydrogel facial mask made using the composition and the method of preparing the hydrogel facial mask, by using an emulsified emulsion containing nanoscale particles, different from the existing ones, it is possible to The emulsified particles are released from the hydrogel with a network structure to form an oil (oil/grease) moisturizing film on the skin, which has the advantage of improving the skin's moisture retention, nourishment, and skin elasticity.

Figure 1 shows the structure (A) in which hydrogel and micron emulsified particles are entangled in a normal hydrogel facial mask and the entangled hydrogel and nanoemulsified particles in a hydrogel mask according to an embodiment of the present invention. Schematic diagram of the structure (B).

Figure 2 is a diagram for confirming the use of a hydrogel mask according to one embodiment of the present invention and a comparative example. A graph showing whether the condensate condensed in the hydrogel contains emulsified particles in a hydrogel mask.

Hereinafter, the present invention will be described in detail.

The hydrogel facial mask composition of the present invention includes a nano-sized emulsion containing at least one of oil and grease, water and an emulsifier; and a gelling agent.

The oil is an oil-like component that is used to provide moisturizing and retaining power after the hydrogel mask is attached to the skin of the human body, and is also used to supply nutrients. Common oils used for the same purpose in the corresponding technical fields can be used without any special requirements. limit. Specifically, as the above-mentioned oil, one or more types selected from the group consisting of: hydrogenated poly(C6-14 olefin), squalane, mineral oil, caprylic acid capric triglyceride, triglyceride can be exemplified. Glyceryl isooctanoate, cetyl ethylhexanoate, silicone oil, ester oil, and oils derived from natural sources.

The oil and fat is also an oily component used to provide moisturizing retention and the like and to supply nutrients in the same manner as the oil. Common oils and fats used for the same purpose in the corresponding technical field can be used without particular limitation. Examples of the fats and oils described above include one or more selected from the group consisting of shea butter, cocoa butter, rice fat, almond fat, apricot fat, cupuaçu fat, pistachio fat, and olive oil. Babassu butter, jojoba butter, candlenut butter, cocoa butter, mango butter, soybean butter, grape seed butter and macadamia nut seed butter. The water may also be pure water or the like that is commonly used as aqueous components in the corresponding technical fields without particular limitation.

The emulsifier is used to form oil in water (O/W, oil in water) emulsion Emulsions, except for anionic surfactants, can be used without special restrictions if they can form an oil-in-water (O/W) emulsion. Here, examples of the anionic surfactant include polyglycerol-3-methylglucose distearate, hydrogenated lecithin, and mixtures thereof.

The emulsified emulsion containing the above ingredients is nanoparticled by ultrahigh pressure emulsification, and the particle size of the nanoemulsified emulsion (or the nanoparticle size of the oil contained in the emulsified emulsion) can be 20 nm to 500 nm, Preferably it is 50nm to 300nm, more preferably 100nm to 150nm. As described above, if the particles of the emulsified emulsion have nanometer size, unlike the conventional ones, the emulsified emulsion can be easily released from the inside of the hydrogel having a network structure after gelation to the outside (that is, towards the skin). Therefore, it is possible to The formation of an oil film on the skin has the following advantages: not only can it improve or improve the low moisturizing retention, nutritious feeling, skin elasticity, etc. that were once the shortcomings of hydrogel masks, but it also does not require the use of hydrogel masks. Maintaining hydration comes with the step of re-applying creams and essences, thereby improving convenience.

The gelling agent is used to gel the facial mask composition and is a component that forms a hydrogel, which is the main component of the facial mask sheet. The gelling agent may include any one or more of water-soluble natural polymers extracted from animals and plants and water-soluble synthetic polymers. Examples of the water-soluble natural polymer extracted from animals and plants include galactomannan (polysaccharide), polyglucomannan (polysaccharide), guar gum, and locust bean gum. (locust bean gum, polysaccharide), pluronic, agar (agar), algin, carrageenan (polysaccharide), xanthan gum (xanthan gum), and gellan gum gum), and examples of the water-soluble synthetic polymer include polyacrylic acid, polyvinyl alcohol, polyvinylpyrrolidone, polyether, and cellulose derivatives.

Relative to the overall weight of the hydrogel facial mask composition, the content of any one or more of the oil and grease may be 1% to 20% by weight, preferably 2% to 10% by weight. The content of the emulsifier may be 0.5% to 5% by weight, preferably 1% to 3% by weight, and the content of the gelling agent may be 0.5% to 5% by weight, preferably 1% to 3% by weight. % by weight, the content of the water may be the remainder except the oil, emulsifier and gelling agent.

On the other hand, the nanoemulsified emulsion may further contain any one or more of a moisturizing agent (or solvent) and a skin conditioning agent if necessary. Examples of the moisturizing agent include compounds commonly used in the corresponding technical fields such as glycerin, polypropylene glycol (PPG), polyethylene glycol (PEG), butylene glycol and other polyols, and the skin conditioning agent may include compounds commonly used in the corresponding technical fields. General in the field.

Next, a hydrogel mask prepared using the hydrogel mask composition described so far will be described. The hydrogel facial mask is characterized by comprising: a tablet-type hydrogel with a network structure; and nanometer-sized emulsified lotion, which is loaded inside the hydrogel and attached to the skin. Rice emulsion emulsion is released into the skin from the interior of the hydrogel.

Since the hydrogel contains a large amount of water, it is excellent in cooling sensation, moisturizing power, adhesion, etc., and is the main component of a facial mask sheet that provides the following effects: it adheres to the skin such as the face to relieve skin tension, moisturizes the skin, and enhances skin elasticity. Elasticity, alleviation of fine lines, removal of metabolites and adsorbed pollutants on the skin surface, removal of long-standing cuticles, removal of excessive It removes excess sebum, promotes smoothness, has psychological stabilizing effects and provides nutrients, etc. The hydrogel is formed by the gelling agent, and the description of the gelling agent is replaced by the above content. On the other hand, the hydrogel may optionally further contain any one or more natural extracts and functional (wrinkle improvement, whitening, etc.) cosmetic ingredients that are commonly used in cosmetics.

The thickness of the hydrogel is 0.1mm to 5mm, preferably 0.5mm to 5mm, more preferably 1mm to 4mm. When the thickness of the hydrogel is less than 0.1mm, it may not be easy to load the nanoparticles. Rice emulsified lotion, when it exceeds 5mm, it is difficult for the mask sheet to adhere to the skin, or even if it adheres, there is a risk of falling off the skin in a short period of time. On the other hand, the thickness in the case of containing the nanoemulsified emulsion may be similar to the thickness described above, but may be changed according to the type and properties of the nanoemulsified emulsion, etc., and the thickness of the hydrogel mask may be changed. The thickness is not particularly limited.

The nanoemulsified lotion is used to maintain moisture and provide nutrients to the skin for a second time after using the facial mask. It can be partially included in the inside of the hydrogel or fully and evenly dispersed across the inside. The distribution shape is not particularly limited, but taking into account the aesthetic feeling felt by the user, a shape taking into account additional aesthetics is preferred. In addition, the hydrogel unit area distribution weight of the nanoemulsified emulsion is also not limited.

Different from existing emulsions in which the particle size is in the micron range, the present invention is characterized by applying nano-level emulsification through ultra-high pressure emulsification. Figure 1 shows the structure (A) in which hydrogel and micron emulsified particles are entangled in a normal hydrogel facial mask and the entangled hydrogel and nanoemulsified particles in a hydrogel mask according to an embodiment of the present invention. of Schematic diagram of structure (B).

That is, in the case of the existing hydrogel facial mask using micron emulsified particles, as shown in A of Figure 1 , the emulsified particles are distributed in micron order and cannot escape from the network structure of the hydrogel. On the contrary, when the present invention is applied, In the case of a hydrogel mask containing nanoemulsified particles, as shown in B of Figure 1 , the emulsified particles are distributed at the nanoscale and can be released from the network structure of the hydrogel to the outside when condensed and applied.

On the other hand, in order to reduce damage such as folding or tearing of the hydrogel mask, protect the skin contact surface of the mask, and prevent contamination and disappearance of the nanoemulsified emulsion, one side of the hydrogel mask can be accommodated In the mold tray, a release film can be attached to the other side. In this case, when the user uses the product, the molded box and the release film should be peeled off before use. Therefore, it is preferable to form an indentation according to the size and shape of the facial mask so that the hydrogel facial mask can be stably attached to the molding box.

Examples of materials for the molded box and release film mentioned above include polyethylene terephthalate (PET), polyethylene (PE), polyester (PS), aluminum, nylon, and polypropylene (PP). , oriented polypropylene (Oriented Poly Propylene, OPP), cast polypropylene (Casting Poly Propylene, CPP), high density polyethylene (High Density Polyethylene, HDPE), low density polyethylene (Low Density Polyethylene, LDPE), linear Low density polyethylene (Linear Low Density Polyethylene, LLDPE) and its mixtures. In addition, the molded box and the release film can be transparent to impart aesthetics and ensure transparency of the product.

Next, a method for preparing the hydrogel facial mask of the present invention will be described. The method of preparing the hydrogel facial mask includes: (a) dissolving the oily component to prepare the oily part; The steps of (b) dissolving the water component and then adding an emulsifier to prepare the water part, (c) mixing the prepared oil part and the water part, (d) making the oil (e) heating the prepared nanoemulsified emulsion and adding a gelling agent and a solvent to prepare water loaded with the nanoemulsified emulsion. The step of gelling the solution, and (f) cooling the prepared hydrogel solution loaded with the nanoemulsified emulsion.

The present invention preferably uses ultrahigh-pressure emulsification as a means for nanoparticleizing the oil-in-water emulsion containing oil/grease components (that is, it is preferable to apply ultrahigh-pressure emulsification in the emulsification process of step d). method), thereby maintaining the viscosity caused by the oil/grease component and improving fluidity, so that the nanoemulsified emulsion can be evenly filled on the mask sheet.

However, the emulsification process of the present invention is not limited to the ultra-high pressure emulsification method, and in addition to the ultra-high pressure emulsification method, various emulsification methods for nanoparticles can be used, such as the following: full-phase temperature emulsification method, Phase inversion emulsification method, D-phase emulsification method, Micro Porous Glass (MPG) emulsification method, liquid crystal emulsification method, nanoemulsification method, multiple emulsification method, Pickering emulsification method, etc.

In addition, in the steps (a) and (b), the dissolution of the oily component and the aqueous component can be performed by means such as heating to dissolve the oily and aqueous components. In addition, any one or more processes of degassing and cooling may be performed before or after the emulsification process of step (d) is performed.

On the other hand, the method of preparing the hydrogel facial mask may further include the step of packaging the finally prepared hydrogel facial mask into a container to commercialize the facial mask. For packaging The container or packaging method is a common container or method for facial mask sheets that is well known in the corresponding technical field. In addition, the basic description about the hydrogel mask can follow the usual description in the corresponding technical field, and therefore, is omitted in the present invention.

In the following, preferred embodiments are disclosed to help understand the present invention. However, the following embodiments only illustrate the present invention. It is clear to those skilled in the corresponding technical fields that they can be carried out within the scope and technical ideas of the present invention. Various changes and modifications, of course, such changes and modifications also fall within the scope of the accompanying patent application.

[Example 1] Preparation of hydrogel facial mask containing nanoemulsion

First, an oil containing hydrogenated poly(C6-14 olefin) and squalane is heated to about 75° C. and dissolved to prepare an oily part. Next, pure water and glycerol (moisturizing agent) are heated to about 75°C and dissolved, then polyglycerol-3 methylglucose distearate is added as an emulsifier, and the mixture is allowed to dissolve in about ten minutes. It is hydrated to prepare an aqueous portion. Next, the separately prepared oily part and the aqueous part are uniformly mixed for three minutes, and then the mixture is degassed and cooled, and the mixture is passed through the M-110EH-30 Microfluidizer® Processor. (Microfluidics Company) The cooled mixture is emulsified by applying a pressure of 1,000 bar for more than 3 cycles to prepare a nanoemulsified emulsion. Next, after the prepared nanoemulsion emulsion is heated to about 75°C to 85°C, carrageenan and locust bean gum are added thereto as gelling agents, and butylene glycol as solvent, thereby preparing loaded nanoemulsions. Emulsion hydrogel solution, the prepared hydrogel solution loaded with nanoemulsion emulsion was cooled, thereby preparing a hydrogel facial mask having the composition of Table 1 below.

[Table 1]

[Example 2] Preparation of hydrogel facial mask containing nanoemulsion

As shown in the composition of Table 1, the squalane in the oil was changed to dimethyl silicone oil, the emulsifier was changed to hydrogenated lecithin, and disodium ethylenediaminetetraacetic acid (EDTA) was added as a metal chelating agent. , except that the hydrogel mask was prepared in the same manner as in Example 1.

[Example 3] Preparation of hydrogel facial mask containing nanoemulsion

A hydrogel mask was prepared in the same manner as in Example 1, except that as shown in the composition of Table 1, shea butter was added instead of squalane (oil).

[Comparative Example 1] Preparation of hydrogel mask

According to the usual method of preparing an emulsified hydrogel mask, pure water and glycerin (moisturizing agent) are first heated to approximately 75°C to 85°C to dissolve them, and then carrageenan and locust bean gum are added thereto as gelling agents. and butylene glycol as solvent to completely dissolve it. Then, an oil containing hydrogenated poly(C6-14 olefin) and squalane was added thereto, mixed uniformly for three minutes, and allowed to cool to prepare a hydrogel mask.

[Experimental Example 1] Evaluating whether the condensate of the hydrogel mask contains emulsified particles

In each of the hydrogel facial masks prepared in Examples 1 to 3 and Comparative Example 1, it was evaluated whether emulsified particles were contained in the condensed liquid in the hydrogel. 2 is a graph for confirming whether emulsified particles are contained in the condensation liquid condensed in the hydrogel in the hydrogel mask according to one embodiment of the present invention and the hydrogel mask according to the comparative example. The results of confirming whether emulsified particles were contained in the condensed liquid condensed in the hydrogel in each of the hydrogel facial masks of Examples 1 to 3 and Comparative Example 1 are shown in Figure 2. The nanoemulsified emulsion was used. In Examples 1 to 3, the diameter of the emulsified particles in the condensate of Example 1 and Example 2 showed an average particle size distribution of 133 nm, and the diameter of the emulsified particles in the condensate of Example 3 showed an average particle size distribution of 68 nm. On the contrary, in the case of Comparative Example 1, no nanoscale particles were observed at all. Thereby, according to the composition and preparation method of the hydrogel facial mask of the present invention, the particles of the emulsified emulsion can be formed into nanoscale and released from the hydrogel with a network structure, and ultimately oil can be formed on the skin ( Oil/grease) moisturizing film to improve skin health.

Claims (11)

A hydrogel facial mask composition includes: nanometer-sized emulsified emulsion, including oil, grease, water and emulsifier; and a gelling agent. The hydrogel facial mask composition according to claim 1, wherein the particle size of the nano-sized emulsion is 20 nm to 500 nm. The hydrogel facial mask composition according to claim 1, wherein the emulsifier is an anionic surfactant. The hydrogel facial mask composition according to claim 3, wherein the anionic surfactant is selected from the group consisting of polyglyceryl-3 methylglucose distearate, hydrogenated lecithin and mixtures thereof. The hydrogel facial mask composition according to claim 1, wherein the gelling agent is any one or more of water-soluble natural polymers extracted from animals and plants and water-soluble synthetic polymers, and the water-soluble natural polymer extracted from animals and plants is The molecule is selected from the group consisting of galactomannan, polyglucomannan, guar gum, locust bean gum, pluronic, agar, algin, carrageenan, xanthan gum, and gellan gum. The water-soluble synthetic polymer is selected from the group consisting of polyacrylic acid, polyvinyl alcohol, polyvinylpyrrolidone, polyether and cellulose derivatives. The hydrogel facial mask composition according to claim 1, wherein the oil is one or more selected from the group consisting of: hydrogenated poly(C6-14 olefin), squalane, mineral oil, decanoic acid Triglyceride, glyceryl triisooctanoate, cetyl ethylhexanoate, silicone oil, ester oil, and oils derived from natural sources. The hydrogel facial mask composition according to claim 1, wherein the oil The fat is one or more selected from the group consisting of: shea butter, cocoa butter, rice fat, almond fat, apricot fat, cupuaçu fat, pistachio fat, olive oil, babassu fat, jojoba Oils, butter, cocoa butter, mango butter, soybean oil, grape seed oil and macadamia nut seed oil. The hydrogel facial mask composition according to claim 1, wherein the nano-sized emulsified lotion further contains any one or more of a moisturizing agent and a skin conditioning agent. A hydrogel facial mask made from the hydrogel facial mask composition as described in claim 1, characterized by comprising: a tablet-type hydrogel with a network structure; and a nanometer-sized emulsion loaded with After the inside of the hydrogel is attached to the skin, the nano-sized emulsion is released from the inside of the hydrogel to the skin. A method of preparing a hydrogel facial mask, comprising: (a) dissolving an oily component to prepare an oily part; (b) dissolving a watery component and then adding an emulsifier to prepare a watery part; (c) the step of mixing the prepared oily part and the watery part; (d) the step of emulsifying the mixture of the oily part and the watery part to prepare a nanoemulsion emulsion; (e) After heating the prepared nanoemulsified emulsion, adding a gelling agent and a solvent to prepare a hydrogel solution loaded with the nanoemulsified emulsion; and (f) having the prepared load as described The hydrogel solution of the nanoemulsion emulsion is cooled, The oily component includes oil and grease. The method of preparing a hydrogel facial mask according to claim 10, wherein the emulsification in step (d) is performed by ultra-high pressure emulsification.