CN115887289B

CN115887289B - Moisturizing composition, cosmetic containing moisturizing composition and preparation method of moisturizing composition

Info

Publication number: CN115887289B
Application number: CN202211341383.XA
Authority: CN
Inventors: 陈浩; 陈小飞; 李丹凤
Original assignee: Guangzhou Bafeorii Chemical Co ltd
Current assignee: Guangzhou Bafeorii Chemical Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2024-03-08
Anticipated expiration: 2042-10-27
Also published as: CN115887289A

Abstract

The invention discloses a moisturizing composition, a cosmetic containing the moisturizing composition and a preparation method thereof, belonging to the technical field of cosmetics and comprising the following components: hydroxyethyl urea, a thickener; the mass ratio of the hydroxyethyl urea to the thickener is (5-20.5): (0.1 to 5); the thickener comprises the following components: surfactant, grease, emulsifier and water. The moisturizing composition disclosed by the invention has an excellent moisturizing effect, can effectively soften cutin, is excellent in stability, is small in fluctuation range of pH and conductivity, does not cause stability problems such as ammonia smell or layering and turbidity of a system when being applied to cosmetics, can effectively mask the glass texture of the system when being coated in an emulsifying system, and can form a soft film, so that soft feel and powdery feel of the upper hand can be provided, unique sticky feel and greasy feel of a product when being semi-dried are improved, and the skin after being coated dry becomes soft and elastic is increased.

Description

Moisturizing composition, cosmetic containing moisturizing composition and preparation method of moisturizing composition

Technical Field

The invention relates to the technical field of cosmetics, in particular to a moisturizing composition, a cosmetic containing the moisturizing composition and a preparation method of the moisturizing composition.

Background

Hydroxyethyl urea is a derivative of urea, which is one of the components in Natural Moisturizing Factors (NMF) in human skin, and is often used in cosmetic moisturizing products due to its superior moisturizing and permeation-assisting effects. The hydroxyethyl urea can permeate into the stratum corneum, increase the water content of the skin, solve the problem of skin dryness, improve the skin feel of the product, and has lower cost, thus being a humectant with extremely high cost performance. However, the problem that the ammonia smell is released or the consistency of the system collapses due to the fluctuation of pH and conductivity of the traditional hydroxyethyl urea, so that the wide application of the hydroxyethyl urea is hindered, the adding amount of the hydroxyethyl urea in a product formula is small, particularly the influence of conductivity and pH on a carbomer system is large, the glass feel is obvious when the hydroxyethyl urea is added into an emulsifying system, and the application of the hydroxyethyl urea in cosmetics is seriously influenced.

When the hydroxyethyl urea is used as a humectant and a permeation assisting agent in the traditional cosmetics, the addition amount is generally low, so that the effects of moisturizing and softening cutin are not obvious, but when the addition amount of the hydroxyethyl urea is more than 5%, the system is more difficult to stabilize, especially a carbowave system, the effect is more obvious, and most of commercially available buffers added by the hydroxyethyl urea are not friendly to the skin and have larger irritation; and the product containing hydroxyethyl urea has thicker glass skin feel and less obvious soft feel when being smeared.

Therefore, how to improve the stability of hydroxyethyl urea and the smearing feeling in an emulsifying system is a technical problem to be solved by the person skilled in the art.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a moisturizing composition, a cosmetic containing the moisturizing composition and a preparation method thereof, wherein the moisturizing composition has an excellent moisturizing effect, can effectively soften cutin, and meanwhile, the moisturizing composition has excellent stability, and the smearing feeling is effectively improved in an emulsifying system.

To achieve the above object, in a first aspect of the present invention, there is provided a moisturizing composition comprising the following components: hydroxyethyl urea, a thickener; the mass ratio of the hydroxyethyl urea to the thickener is that: thickener= (5-20.5): (0.1 to 5);

the thickener comprises the following components: surfactant, grease, emulsifier and water;

the surfactant comprises an acrylic polymer having a sulfonic acid group;

the grease is branched isoparaffin.

As a preferred embodiment of the invention, the mass ratio of the hydroxyethyl urea to the thickener is hydroxyethyl urea: thickener= (10-20.5): (0.5 to 5), preferably 20:1.5.

As a preferred embodiment of the present invention, the thickener comprises the following components in parts by mass: 30-50 parts of surfactant, 8-20 parts of grease, 3-8 parts of emulsifier and 20-40 parts of water.

As a preferred embodiment of the present invention, the thickener comprises the following components in parts by mass: 40-50 parts of surfactant, 10-20 parts of grease, 3-7 parts of emulsifier and 25-35 parts of solvent, more preferably 47 parts of surfactant, 16 parts of grease, 6 parts of emulsifier and 31 parts of water.

As a preferred embodiment of the present invention, the sulfonic acid group-containing acrylic polymer includes at least one of sodium polyacryl dimethyl taurate, ammonium polyacryl dimethyl taurate, and polyacrylamide methyl propane sulfonic acid.

As a preferred embodiment of the present invention, the surfactant is an acrylic polymer containing a sulfonic acid group and an amino group; the acrylic polymer containing sulfonic acid groups and amino groups comprises at least one of sodium polyacryl dimethyl taurate and ammonium polyacryl dimethyl taurate.

As a preferred embodiment of the present invention, the branched isoparaffin includes at least one of isododecane and isohexadecane.

As a preferred embodiment of the present invention, the emulsifier is a polyethylene glycol-based nonionic emulsifier;

the polyethylene glycol nonionic emulsifier comprises at least one of PEG-7 glycerol cocoate, fatty alcohol polyoxyethylene ether, stearyl polyether-21, PEG-100 stearate, PEG-10 triisostearate, PEG-10 glycerol isostearate, PEG-10 glycerol stearate and PEG-7 olive sodium carboxylate.

In a second aspect of the invention, the present invention provides the use of a moisturizing composition as described above in cosmetics.

As a preferred embodiment of the present invention, the cosmetic is in the form of an aqueous solution, an emulsion, a cream, a gel, a mask or an essence.

In a third aspect of the invention, the invention provides a cosmetic, comprising the following components in percentage by mass: 0.1 to 1.2 percent of suspending agent, 0.3 to 20 percent of humectant, 0.3 to 30 percent of emollient, 0.3 to 15 percent of emulsifying agent, 5.1 to 25.5 percent of moisturizing composition and the balance of water;

the moisturizing composition is the moisturizing composition.

As a preferred embodiment of the present invention, the cosmetic comprises the following components in mass percent: 0.1 to 1 percent of suspending agent, 3 to 10 percent of humectant, 3 to 18 percent of emollient, 0.3 to 9 percent of emulsifier, 10 to 25.5 percent of moisturizing composition and the balance of water.

As a preferred embodiment of the present invention, the suspending agent comprises at least one of carbomer, xanthan gum, carrageenan, hydrolyzed sclerotium gum, gum arabic, karaya gum, tragacanth gum, carob gum, locust bean gum, guar gum, methylcellulose, ethylcellulose, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose.

As a preferred embodiment of the present invention, the humectant comprises at least one of 1, 3-butanediol, propylene glycol, hexylene glycol, dipropylene glycol, glycerin, polyethylene glycol, xylitol, diglycerin, maltitol, maltose, D-mannitol, pentanediol, dipropylene glycol, polypropylene glycol, ethylene glycol, neopentyl glycol, erythritol, sorbitol, mannitol, xylitol, glucose, lactose, mannose, maltose, fructose, inositol, sorbitol, sorbitan, trehalose, starch hydrolyzing sugar.

As a preferred embodiment of the present invention, the emollient comprises at least one of caprylic/capric triglyceride, isohexadecyl squalane, polydimethylsiloxane, cyclopentadimethicone, diisostearyl malate, dicetyl stearyl dimerized linoleate, hexyl laurate, polyglycerol 2-diisostearate, hydrogenated polyisobutene, pentaerythritol, tetraisostearate, caprylic capric triglyceride, octyldodecanol, dioctyl carbonate, macadamia nut oil, shea butter, jojoba oil, lanolin, white oil, almond oil, olive oil, jojoba oil, castor oil, C12-15 alkyl benzoate, isononyl isononanoate, dioctyl adipate, octyl stearate, hexyl laurate, cocoa caprylate, caprate.

As a preferred embodiment of the present invention, the emulsifier comprises the following components: cetostearyl alcohol (and) PEG-20 stearate, glyceryl stearate (and) PEG-100 stearate, cetostearyl alcohol, the mass ratio of cetostearyl alcohol (and) PEG-20 stearate, glyceryl stearate (and) PEG-100 stearate, cetostearyl alcohol being cetostearyl alcohol (and) PEG-20 stearate: glycerol stearate (and) PEG-100 stearate: cetostearyl alcohol= (0.1-5): (0.1-5): (0.1-5).

As a preferred embodiment of the invention, the mass ratio of cetostearyl alcohol (and) PEG-20 stearate, glyceryl stearate (and) PEG-100 stearate, cetostearyl alcohol is cetostearyl alcohol (and) PEG-20 stearate: glycerol stearate (and) PEG-100 stearate: cetostearyl alcohol= (0.1-3): (0.1-3): (0.1-3).

As a preferred embodiment of the invention, the mass ratio of cetostearyl alcohol (and) PEG-20 stearate, glyceryl stearate (and) PEG-100 stearate, cetostearyl alcohol is cetostearyl alcohol (and) PEG-20 stearate: glycerol stearate (and) PEG-100 stearate: cetostearyl alcohol=1.5: 0.5:1.

The cetostearyl alcohol (and) PEG-20 stearate is commonly used in cosmetics and is called GP200 for short; the glycerol stearate (and) PEG-100 stearate is commonly used in cosmetics and is called A165 for short.

As a preferred embodiment of the present invention, the cosmetic further comprises the following components in mass percent: 0.1-2% of pH regulator and 0.1-0.4% of preservative.

In a fourth aspect of the present invention, the present invention also provides a method for preparing the above-mentioned cosmetic, comprising the steps of:

(1) Uniformly mixing water, a humectant and a preservative to obtain a water phase;

(2) Uniformly mixing an emollient, an emulsifier and a suspending agent to obtain an oil phase;

(3) Adding the water phase into the oil phase, and homogenizing at 80-90 ℃;

(4) Cooling to 40-50 deg.c, adding pH regulator and moisturizing composition, and stirring to obtain the cosmetics.

The invention has the beneficial effects that: the moisturizing composition disclosed by the invention has an excellent moisturizing effect, can effectively soften cutin, is excellent in stability, is small in fluctuation range of pH and conductivity, does not cause stability problems such as ammonia smell or layering and turbidity of a system when being applied to cosmetics, can effectively mask the glass texture of the system when being coated in an emulsifying system, and can form a soft film, so that soft feel and powdery feel of the upper hand can be provided, unique sticky feel and greasy feel of a product when being semi-dried are improved, and the skin after being coated dry becomes soft and elastic is increased.

Drawings

FIG. 1 is a graph showing the moisture retention effect of hydroxyethylurea according to the present invention versus a commercially available humectant;

FIG. 2 is an electron microscope image of the cosmetic product according to example 6;

FIG. 3 is an electron microscopic view of the cosmetic product according to comparative example 1;

FIG. 4 is a diagram before the cosmetics according to example 6 are tried out;

fig. 5 is a graph after the cosmetics described in example 6 were tried out.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the invention, the technical characteristics described in an open mode comprise a closed technical scheme composed of the listed characteristics and also comprise an open technical scheme comprising the listed characteristics.

In the present invention, the numerical ranges are referred to as continuous, and include the minimum and maximum values of the ranges, and each value between the minimum and maximum values, unless otherwise specified. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range description features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to include any and all subranges subsumed therein.

In the present invention, the specific dispersing and stirring treatment method is not particularly limited.

The reagents or apparatus used in the present invention are conventional products commercially available without the manufacturer's knowledge.

In order to solve the problems that in the prior art, the hydroxyethyl urea releases ammonia smell or the consistency of the system collapses due to fluctuation of pH and conductivity, and in an emulsion system containing the hydroxyethyl urea, the glass feel is obvious when the hand is smeared, and the discomfort is generated.

The embodiment of the invention provides a moisturizing composition, which comprises the following components: hydroxyethyl urea, a thickener; the mass ratio of the hydroxyethyl urea to the thickener is that: thickener= (5-20.5): (0.1 to 5);

the surfactant comprises an acrylic polymer having a sulfonic acid group;

the grease is branched isoparaffin.

The present inventors have found in a great deal of research that the moisturizing composition comprising hydroxyethyl urea and a thickener in a specific mass ratio has an excellent moisturizing effect, can effectively soften keratin, is excellent in stability, has small fluctuation range of pH and conductivity, does not cause stability problems such as ammonia smell or layering, turbidity and the like in a system when applied in cosmetics, can effectively mask the glass texture thereof in an emulsion system when applied, can form a soft film, and can provide soft feel and powdery feel of the upper hand, and improve unique sticky feel and greasy feel when the product is semi-dried, so that the skin becomes soft and elastic after being applied dry is increased.

The inventors studied the influence of the mass ratio of the hydroxyethyl urea and the thickener on the effect, and found that when the mass ratio of the hydroxyethyl urea and the thickener is in the above ratio, the effect of moisture retention is excellent, the stability problems such as ammonia smell or delamination and turbidity of the system are not caused, and the texture of the system in an emulsified system can be improved, while when the mass ratio is lower than the above range value (lower than 5:5), the content of the thickener is excessive, resulting in the content of the hydroxyethyl urea being relatively reduced, thereby causing the effect of moisture retention to be reduced, and when the mass ratio is higher than the above range value (higher than 20.5:1), the stability of the system and the smearing feeling in the emulsified system are both remarkably reduced, so that in the present invention, the mass ratio of the two is required to be strictly controlled.

In one embodiment, the mass ratio of the hydroxyethyl urea to the thickener is hydroxyethyl urea: thickener= (10-20.5): (0.5 to 5), preferably 20:1.5. in particular, when the mass ratio of the two is within the above range, the moisture retention property is better, and the smearing feeling in an emulsion system is better.

In one embodiment, the thickener comprises the following components in parts by mass: 30-50 parts of surfactant, 8-20 parts of grease, 3-8 parts of emulsifier and 20-40 parts of water.

In one embodiment, the thickener comprises the following components in parts by mass: 40-50 parts of surfactant, 10-20 parts of grease, 3-7 parts of emulsifier and 25-35 parts of solvent, more preferably 47 parts of surfactant, 16 parts of grease, 6 parts of emulsifier and 31 parts of water.

In one embodiment, the acrylic polymer containing sulfonic acid groups includes at least one of sodium polyacryl dimethyl taurate, ammonium polyacryl dimethyl taurate, and polyacrylamide methyl propane sulfonic acid.

In one embodiment, the surfactant is an acrylic polymer containing sulfonic acid groups and amino groups;

the acrylic polymer containing sulfonic acid groups and amino groups comprises at least one of sodium polyacryl dimethyl taurate and ammonium polyacryl dimethyl taurate.

The inventor of the present invention has found unexpectedly that, due to the unique structure (containing taurine groups) of the acrylic polymer, the acrylic polymer contains rich amino groups and sulfonic acid groups, and the anionic groups in the molecules repel each other, so that the acrylic polymer is completely stretched in water, and meanwhile, the size of the taurine groups (after being stretched in water) is far larger than that of air (nitrogen, oxygen and carbon dioxide) and water molecules, so that gaps among molecular chains are large, and therefore, air molecules can freely enter and exit between the surface layer of skin and the external environment (skin can freely breathe), the air permeability is remarkable, and the smearing feeling can be effectively improved.

In one embodiment, the branched isoparaffin comprises at least one of isododecane, isohexadecane.

The branched isoparaffin contains abundant branched chains, and when the branched isoparaffin is fully crosslinked with each other, a spherical cage structure with space containing capacity is easy to form, and the structure shows unique powder feel in a product, has excellent stability and effectively improves the texture of the product.

In one embodiment, the emulsifier is a polyethylene glycol based nonionic emulsifier;

The specific thickener containing the sulfonic acid group-containing acrylic polymer, branched isoparaffin and polyethylene glycol nonionic emulsifier has good powder feel and air permeability, is spherical in structure, is combined with hydroxyethyl urea, has small fluctuation range of pH and conductivity, does not cause the stability problems of ammonia smell, layering, turbidity and the like of a system, can effectively mask the glass texture of the system in an emulsifying system when being coated, can form a soft film, can provide soft feel and powder feel of hands, improves unique sticky feel and greasy feel when a product is semi-dried, and enables skin after being coated to become soft and elastic to be increased.

The method for preparing the thickener is not particularly limited in the present invention, and one skilled in the art can prepare the thickener according to conventional methods.

Illustratively, the thickener is prepared by: adding surfactant, grease and emulsifier into water, homogenizing at high temperature, and obtaining the thickener.

An embodiment of the present invention provides the use of the moisturizing composition described above in cosmetics.

In one embodiment, the cosmetic is in the form of an aqueous solution, an emulsion, a cream, a gel, a mask or an essence.

An embodiment of the invention provides a cosmetic, which comprises the following components in percentage by mass: 0.1 to 1.2 percent of suspending agent, 0.3 to 20 percent of humectant, 0.3 to 30 percent of emollient, 0.3 to 15 percent of emulsifying agent, 5.1 to 25.5 percent of moisturizing composition and the balance of water;

the moisturizing composition is the moisturizing composition.

In one embodiment, the cosmetic comprises the following components in percentage by mass: 0.1 to 1 percent of suspending agent, 3 to 10 percent of humectant, 3 to 18 percent of emollient, 0.3 to 9 percent of emulsifier, 10 to 25.5 percent of moisturizing composition and the balance of water.

In one embodiment, the suspending agent comprises at least one of carbomer, xanthan gum, carrageenan, hydrolyzed ringlet gum, gum arabic, karaya gum, tragacanth gum, carob gum, locust bean gum, guar gum, methylcellulose, ethylcellulose, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose.

In one embodiment, the humectant comprises at least one of 1, 3-butanediol, propylene glycol, hexylene glycol, dipropylene glycol, glycerol, polyethylene glycol, xylitol, diglycerol, maltitol, maltose, D-mannitol, pentanediol, dipropylene glycol, polypropylene glycol, ethylene glycol, neopentyl glycol, erythritol, sorbitol, mannitol, xylitol, glucose, lactose, mannose, maltose, fructose, inositol, sorbitol, sorbitan, trehalose, starch hydrolyzing sugar.

It should be noted that, a person skilled in the art may select a specific type of the humectant according to actual needs, so long as a corresponding moisturizing effect is achieved.

In one embodiment, the emollient comprises at least one of caprylic/capric triglyceride, isohexadecane, squalane, polydimethylsiloxane, cyclopentadimethicone, diisostearyl malate, dicetyl stearyl dimer linoleate, hexyl laurate, polyglycerol 2-diisostearate, hydrogenated polyisobutene, pentaerythritol, tetraisostearate, caprylic capric triglyceride, octyldodecanol, dioctyl carbonate, macadamia nut oil, shea butter, jojoba oil, lanolin, white oil, almond oil, olive oil, jojoba oil, castor oil, C12-15 alkyl benzoate, isononyl isononanoate, dioctyl adipate, octyl stearate, hexyl laurate, cocoa butter, caprate.

It should be noted that, a person skilled in the art may select a specific type of the emollient according to actual needs, so long as a corresponding emollient effect is achieved.

In one embodiment, the emulsifier comprises the following components: cetostearyl alcohol (and) PEG-20 stearate, glyceryl stearate (and) PEG-100 stearate, cetostearyl alcohol, the mass ratio of cetostearyl alcohol (and) PEG-20 stearate, glyceryl stearate (and) PEG-100 stearate, cetostearyl alcohol being cetostearyl alcohol (and) PEG-20 stearate: glycerol stearate (and) PEG-100 stearate: cetostearyl alcohol= (0.1-5): (0.1-5): (0.1-5).

In the above-mentioned emulsification system, the glass texture of the moisturizing composition at the time of application is improved to the maximum extent.

In one embodiment, the mass ratio of cetostearyl alcohol (and) PEG-20 stearate, glyceryl stearate (and) PEG-100 stearate, cetostearyl alcohol is cetostearyl alcohol (and) PEG-20 stearate: glycerol stearate (and) PEG-100 stearate: cetostearyl alcohol= (0.1-3): (0.1-3): (0.1-3).

In one embodiment, the mass ratio of cetostearyl alcohol (and) PEG-20 stearate, glyceryl stearate (and) PEG-100 stearate, cetostearyl alcohol is cetostearyl alcohol (and) PEG-20 stearate: glycerol stearate (and) PEG-100 stearate: cetostearyl alcohol=1.5: 0.5:1.

In one embodiment, the cosmetic further comprises the following components in percentage by mass: 0.1-2% of pH regulator and 0.1-0.4% of preservative.

In addition, the above-mentioned cosmetics may be blended with auxiliary materials such as antioxidants, ultraviolet absorbers, fragrances, antibacterial agents and the like which are commonly used in usual cosmetic compositions, if necessary.

An embodiment of the present invention provides a method for preparing the above-mentioned cosmetic, comprising the steps of:

(3) Adding the water phase into the oil phase, and homogenizing at 80-90 ℃;

The invention is further illustrated by the following specific examples:

example 1

A moisturizing composition comprising the following components: hydroxyethyl urea, a thickener; the mass ratio of the hydroxyethyl urea to the thickener is that: thickener = 20:1.5.

the thickener comprises the following components: 47 parts of surfactant, 16 parts of grease, 6 parts of emulsifier and 31 parts of water.

The surfactant is an acrylic polymer containing sulfonic acid groups and amino groups, and specifically is sodium polyacryl dimethyl taurate in the embodiment.

The oil is branched isoparaffin, in this example isohexadecane.

The emulsifier is a polyethylene glycol nonionic emulsifier, and in the embodiment is specifically PEG-7 glycerol cocoate.

The preparation method of the thickener comprises the following steps: adding surfactant, oil and emulsifier into water, homogenizing at 75deg.C to obtain the thickener.

Example 2

A moisturizing composition comprising the following components: hydroxyethyl urea, a thickener; the mass ratio of the hydroxyethyl urea to the thickener is that: thickener = 5:0.1.

the thickener comprises the following components in parts by mass: 32 surfactant, 20 parts of grease, 8 parts of emulsifier and 40 parts of water.

The oil is branched isoparaffin, in this example isohexadecane.

Example 3

A moisturizing composition comprising the following components: hydroxyethyl urea, a thickener; the mass ratio of the hydroxyethyl urea to the thickener is that: thickener = 20.5:5.

the thickener comprises the following components: 50 parts of surfactant, 8 parts of grease, 3 parts of emulsifier and 39 parts of water.

The oil is branched isoparaffin, in this example isohexadecane.

Example 4

The surfactant is an acrylic polymer containing sulfonic acid groups and amino groups, and specifically is ammonium polyacryl dimethyl taurate in the embodiment.

The grease is branched isoparaffin, and in this embodiment is isododecane.

The emulsifier is a polyethylene glycol nonionic emulsifier, and in the embodiment is PEG-10 glycerol stearate.

Example 5

A cosmetic comprises the following components in percentage by mass: 0.2% methylparaben (preservative), 0.3% carbomer 980, 0.36% arginine (pH adjuster), 2%1, 2-hexanediol, 4% glycerol, 4%1, 3-butanediol, 2% polydimethylsiloxane (DC-200), 3% caprylic/capric triglyceride, 5% isohexadecane, 3% emulsifier, 21.5% moisturizing composition, 54.64% water.

The moisturizing composition is the moisturizing composition described in example 1.

The emulsifier comprises cetostearyl alcohol (sum) and PEG-20 stearate, glycerol stearate (sum) and PEG-100 stearate, and the mass ratio of the cetostearyl alcohol is 1.5:0.5:1.

The preparation method of the cosmetic comprises the following steps:

(1) Uniformly mixing water, 1, 2-hexanediol, glycerol, 1, 3-butanediol and methylparaben at 80 ℃ to obtain a water phase;

(2) Uniformly mixing caprylic/capric triglyceride, isohexadecane, polydimethylsiloxane, an emulsifier and carbomer 980 to obtain an oil phase;

(3) Adding the water phase into the oil phase, and homogenizing at 80-90 ℃;

(4) Cooling to 40-50 ℃, adding arginine and moisturizing composition, and stirring uniformly to obtain the cosmetic.

Example 6

A cosmetic comprises the following components in percentage by mass: 0.15% methylparaben (preservative), 0.1% carbomer 980, 0.2% arginine (pH adjuster), 1%1, 2-hexanediol, 1% glycerol, 1%1, 3-butanediol, 1% polydimethylsiloxane (DC-200), 1% caprylic/capric triglyceride, 1% isohexadecane, 1% emulsifier, 5.1% moisturizing composition, 87.45% water.

The moisturizing composition is the moisturizing composition described in example 2.

The emulsifier comprises cetostearyl alcohol (sum) PEG-20 stearate, glycerol stearate (sum) PEG-100 stearate, and the mass ratio of cetostearyl alcohol is 1:0.5:0.5.

the preparation method of the cosmetic comprises the following steps:

(3) Adding the water phase into the oil phase, and homogenizing at 80-90 ℃;

Example 7

A cosmetic comprises the following components in percentage by mass: 0.2% methylparaben (preservative), 0.4% carbomer 980, 0.2% arginine (pH adjuster), 1%1, 2-hexanediol, 5% glycerol, 6%1, 3-butanediol, 3% polydimethylsiloxane (DC-200), 4% caprylic/capric triglyceride, 5% isohexadecane, 4% emulsifier, 12.75% moisturizing composition, 58.45% water.

The moisturizing composition is the moisturizing composition of example 3.

The emulsifier comprises cetostearyl alcohol (sum) and PEG-20 stearate, glycerol stearate (sum) and PEG-100 stearate, wherein the mass ratio of the cetostearyl alcohol to the PEG-100 stearate is 2:1.5:0.5.

the preparation method of the cosmetic comprises the following steps:

(3) Adding the water phase into the oil phase, and homogenizing at 80-90 ℃;

Example 8

A cosmetic comprises the following components in percentage by mass: 0.2% methylparaben (preservative), 0.3% hydrolyzed ringlet gum, 0.36% arginine (pH adjuster), 2% erythritol, 4% trehalose, 4%1, 3-butanediol, 2% cyclopentadimethicone, 3% jojoba oil, 5% squalane, 3% emulsifier, 21.5% moisturizing composition, 54.64% water.

the preparation method of the cosmetic comprises the following steps:

(1) Mixing water, erythritol, trehalose, 1, 3-butanediol and methylparaben at 80deg.C to obtain water phase;

(2) Uniformly mixing cyclopentadimethicone, jojoba oil, squalane, an emulsifying agent and hydrolyzed small nuclear fungus glue to obtain an oil phase;

(3) Adding the water phase into the oil phase, and homogenizing at 80-90 ℃;

Comparative example 1

Comparative example 1 differs from example 5 in that comparative example 1 does not contain a thickener, all other things being equal.

A cosmetic comprises the following components in percentage by mass: 0.2% methylparaben (preservative), 0.3% carbomer 980, 0.36% arginine (pH adjuster), 2%1, 2-hexanediol, 4% glycerol, 4%1, 3-butanediol, 2% polydimethylsiloxane (DC-200), 3% caprylic/capric triglyceride, 5% isohexadecane, 3% emulsifier, 21.5% hydroxyethyl urea, 54.64% water.

Comparative example 2

Comparative example 2 differs from example 5 in that the composition of the thickener described in comparative example 2 is different from that of example 1, and all others are the same.

The surfactant is an acrylic polymer containing sulfonic acid groups and amino groups, and the surfactant is specifically acrylic acid (ester) or C10-30 alkanol acrylate crosslinked polymer in the comparative example.

The grease is synthesized squalane.

The emulsifier is a polyethylene glycol nonionic emulsifier, and the comparative example is specifically PEG-7 glycerol cocoate.

Comparative example 3

Comparative example 3 differs from example 5 in that the mass ratio of hydroxyethyl urea and thickener is different, and the other are the same.

In the comparative example, the mass ratio of the hydroxyethyl urea to the thickener is hydroxyethyl urea: thickener = 2:5.

comparative example 4

Comparative example 4 differs from example 5 in that the mass ratio of hydroxyethyl urea and thickener is different, and the other are the same.

In the comparative example, the mass ratio of the hydroxyethyl urea to the thickener is hydroxyethyl urea: thickener = 25:0.1.

comparative example 5

Comparative example 5 differs from example 5 in that the emulsifier was selected differently and the others were all the same.

In this comparative example, the emulsifier included cetostearyl alcohol (and) PEG-20 stearate, tween 60, hydrogenated lecithin in a mass ratio of 1.5:0.5:1.

test example 1

Hydroxyethyl urea is compared with the moisturizing effect of the common moisturizing agents on the market.

After dilution of hydroxyethyl urea with deionized water in a 1:1 ratio, the resulting mixture was designated HV50.

Levan (bafeorii AML), glycerol, luba gum (Luba-gel), trimethylglycine, β -glucan, HV50, luba oil (Luba-gel), and propylene glycol were each formulated as 10% aqueous solutions, and HA was formulated as 0.1% aqueous solutions.

The testing method comprises the following steps: the method comprises the steps of cleaning two arms by using a designated facial cleanser before testing under the environment of 20 ℃ and 50% relative humidity, sitting still for 20 minutes in a laboratory, dividing the inner sides of forearms of two hands of a volunteer into symmetrical 4 small chambers (8 of the two hands) with the area of 4cm multiplied by 3cm by using a marker pen, carrying out data acquisition by using a skin tester before and after using a product, only vertically pressing a moisture testing probe on the surface of tested skin, pressing the top of the probe back for a certain distance, keeping the pressure of 0.16N on the top of the probe on the surface of the skin by using a spring in the probe, displaying a result on a host computer in one second, and simultaneously giving a prompt sound, wherein the water loss rate of the skin is tested by using CK-MPA4, and the test result is shown in figure 1.

As can be seen from fig. 1, hydroxyethyl urea has a better moisturizing effect than the moisturizer commonly used in the market.

Test example 2

By adopting a scanning electron microscope (the electron microscope is Regulus8100, the freezing transmission is quorum PP 3010T), and observing the cosmetics described in the example 5 and the comparative example 1, as shown in the figures 2 and 3 respectively, it can be seen that the specific thickener (figure 3) is not added into the moisturizing composition, the cosmetics still have heavy glass feel and can not change the skin feel, and after the thickener is added (figure 2), obvious spheres can be seen, the smearing texture of hydroxyethyl urea can be effectively improved, the soft feel of skin during smearing is improved, and the glass feel brought by hydroxyethyl urea is well covered.

Test example 3

A female volunteer with no skin allergy history is selected, the cosmetic described in the example 5 is tried out, and the cosmetics are respectively applied for 1 time (the application amount is about 2g each time and the soybean size) in the morning and evening, and the cosmetics are continuously tried out for 30 days, wherein the picture before use is shown in figure 4, and the picture at the same position after use is shown in figure 5.

Test example 4

The cosmetics of example 5 and comparative examples 1 to 5 were respectively tested for initial conductivity, and the cosmetics were placed at 50 c, and the conductivity was again tested on day 7 and day 21, and the search was tested for ammonia smell (test period 3 weeks, statistical once per week) and the test results are shown in table 1.

TABLE 1

As can be seen from Table 1, the cosmetic containing the moisturizing composition of the present invention has excellent stability, and little fluctuation in conductivity, and does not cause the system to have ammonia smell.

Comparative example 5 and comparative example 1 show that the combination of the thickener according to the present invention with hydroxyethylurea can effectively improve the stability of the system, avoid the occurrence of ammonia smell, and have small fluctuation in conductivity.

As is clear from comparative example 5 and comparative example 4, the mass ratio of the hydroxyethyl urea and the thickener can affect the stability of the system, and the stability can be effectively improved, the fluctuation of the conductivity is small, and the ammonia smell of the system is avoided by controlling the mass ratio of the hydroxyethyl urea and the thickener within the range of the invention.

Test example 5

Test object: 40 female volunteers (between 20 and 25 years of age) with no skin allergy history were divided into 8 groups of 5 persons each.

Test area: the skin inside the arm was 5cm in area.

Test sample: the cosmetics described in examples 5 to 7 and comparative examples 1 to 5.

The testing method comprises the following steps: the volunteers clean the arms, after the arms are completely dried, the cosmetics are respectively smeared on the test areas, the smearing method is unified to be used for back and forth, the smearing test is unified for 10 times, the smearing feeling is scored, the scoring standard is that the skin moisture content of the test areas is respectively measured by a skin moisture tester before the test, for 1h and for 4h, the scoring standard is that the skin moisture content is shown in table 2, wherein the scoring standard is that the skin moisture tester is 5 min, the skin moisture content is soft, and the scoring standard is that the skin moisture content is 4 min, the skin moisture content is not soft, and the glass is not good, the glass is weaker, the glass is strong, and the skin moisture content is 1 min.

TABLE 2

	Initial moisture content/%	1h moisture content/%	4h moisture content/%	Score/score of smear
					Example 5	32.3	49.6	46.9	5
Example 6	32.5	49.2	45.2	4.6
					Example 7	32.4	49.5	45.6	4.8
Comparative example 1	32.5	48.5	45.3	1.4
					Comparative example 2	32.5	45.2	41	3.6
Comparative example 3	32.3	37.8	35.2	4.2
					Comparative example 4	32	48.6	45	1.8
Comparative example 5	32.1	49	45.1	4.6

As can be seen from table 2, the cosmetic containing the moisturizing composition of the present invention has excellent moisturizing effect and can effectively improve the feeling of application of hydroxyethyl urea.

As is clear from comparative examples 5 to 7, the moisturizing effect and the smear feeling can be affected to some extent by different raw material ratios, and example 5 is the best embodiment and has the best moisturizing effect and smear feeling.

Comparative example 5 and comparative example 1 show that the addition of the thickener is effective in improving the smear feeling.

Comparative example 5 and comparative example 2 show that the acrylic polymer containing sulfonic acid groups and amino groups according to the present invention effectively improves the moisturizing effect and the smear feeling.

Comparative example 5 and comparative examples 3 to 4 show that the mass ratio of the hydroxyethyl urea and the thickener can affect the smearing feeling and the moisturizing effect of the system, and the ratio of the hydroxyethyl urea and the thickener needs to be strictly controlled within the scope of the present invention.

Test example 6

The cosmetics described in examples 4 to 8 and comparative examples 1 to 5 were subjected to stability tests, respectively.

The test criteria are shown in table 3.

TABLE 3 Table 3

The test results are shown in Table 4

TABLE 4 Table 4

	Normal temperature	48℃	Cycle test	-15℃
					Example 5	Normal state	Normal state	Normal state	Normal state
Example 6	Normal state	Normal state	Normal state	Normal state
					Example 7	Normal state	Normal state	Normal state	Normal state
Example 8	Normal state	Normal state	Normal state	Normal state
					Comparative example 1	Normal state	Thinning of	Demulsification	Normal state
Comparative example 2	Normal state	Normal state	Normal state	Normal state
					Comparative example 3	Normal state	Normal state	Normal state	Normal state
Comparative example 4	Normal state	Thinning of	Normal state	Normal state
					Comparative example 5	Normal state	Thinning of	Demulsification	Normal state

As can be seen from table 4, the cosmetics containing the moisturizing composition of the present invention have excellent stability, and all pass the stability test.

As is evident from comparative example 5 and comparative example 1, the combination of the thickener according to the present invention with hydroxyethylurea is effective in improving stability.

Comparative example 5 and comparative example 4 show that the mass ratio of hydroxyethyl urea and thickener can affect the stability of the system, and the stability can be effectively improved by controlling the mass ratio of hydroxyethyl urea and thickener within the scope of the present invention.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A moisturizing composition comprising the following components: hydroxyethyl urea, a thickener; the mass ratio of the hydroxyethyl urea to the thickener is that: thickener= (5-20.5): (0.1 to 5);

the thickener comprises the following components in parts by mass: 30-50 parts of surfactant, 8-20 parts of grease, 3-8 parts of emulsifier and 20-40 parts of water;

the surfactant is an acrylic polymer containing sulfonic acid groups and amino groups; the acrylic polymer containing sulfonic acid groups and amino groups is sodium polyacryl dimethyl taurate;

the grease is branched isoparaffin, and the branched isoparaffin is isohexadecane;

the emulsifier is polyethylene glycol nonionic emulsifier, and the polyethylene glycol nonionic emulsifier is at least one of PEG-7 glycerol cocoate and PEG-10 glycerol stearate.

2. The moisturizing composition of claim 1, wherein the mass ratio of the hydroxyethyl urea to the thickener is hydroxyethyl urea: thickener= (10-20.5): (0.5 to 5).

3. The moisturizing composition of claim 2, wherein the mass ratio of the hydroxyethyl urea to the thickener is hydroxyethyl urea: thickener = 20:1.5.

4. The moisturizing composition of claim 1, wherein the thickener comprises the following components in parts by mass: 40-50 parts of surfactant, 10-20 parts of grease, 3-7 parts of emulsifier and 25-35 parts of water.

5. The moisturizing composition of claim 4, wherein the thickener comprises the following components in parts by mass: 47 parts of surfactant, 16 parts of grease, 6 parts of emulsifier and 31 parts of water.

6. Use of the moisturizing composition of any one of claims 1-5 in the preparation of cosmetics.

7. The use according to claim 6, wherein the cosmetic is in the form of an aqueous solution, an emulsion, a cream, a gel or a mask.

8. The cosmetic is characterized by comprising the following components in percentage by mass: 0.1-1.2% of suspending agent, 0.3-20% of humectant, 0.3-30% of emollient, 0.3-15% of emulsifier, 5.1-25.5% of moisturizing composition, 0.1-2% of pH regulator, 0.1-0.4% of preservative and the balance of water;

the moisturizing composition is the moisturizing composition of any one of claims 1 to 5.

9. The cosmetic according to claim 8, characterized by comprising the following components in percentage by mass: 0.1-1% of suspending agent, 3-10% of humectant, 3-18% of emollient, 0.3-9% of emulsifier, 10-25.5% of moisturizing composition, 0.1-2% of pH regulator, 0.1-0.4% of preservative and the balance of water.

10. The cosmetic product of claim 8, wherein the suspending agent comprises at least one of carbomer, xanthan gum, carrageenan, hydrolyzed sclerotium gum, gum arabic, karaya gum, tragacanth gum, carob gum, locust bean gum, guar gum, methylcellulose, ethylcellulose, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose;

and/or the humectant comprises at least one of 1, 3-butanediol, propylene glycol, hexylene glycol, dipropylene glycol, glycerol, polyethylene glycol, diglycerol, maltitol, D-mannitol, pentanediol, dipropylene glycol, polypropylene glycol, ethylene glycol, neopentyl glycol, erythritol, sorbitol, xylitol, glucose, lactose, mannose, maltose, fructose, inositol, sorbitan, trehalose, starch hydrolyzing sugar;

and/or the emollient comprises at least one of caprylic/capric triglyceride, isohexadecane, squalane, polydimethylsiloxane, cyclopentadimethicone, diisostearyl malate, dicetyl stearyl dimer linoleate, hexyl laurate, polyglycerol 2-diisostearate, hydrogenated polyisobutene, pentaerythritol, tetraisostearate, caprylic capric triglyceride, octyldodecanol, dioctyl carbonate, macadamia nut oil, shea butter, jojoba oil, lanolin, white oil, almond oil, olive oil, castor oil, C12-15 alkyl benzoate, isononyl isononanoate, dioctyl adipate, octyl stearate, hexyl laurate, cocoa butter, caprate.

11. The cosmetic product according to claim 8, wherein the emulsifier comprises the following components: cetyl stearyl alcohol and PEG-20 stearate, glycerol stearate and PEG-100 stearate, cetostearyl alcohol, the mass ratio of cetostearyl alcohol to PEG-20 stearate, glycerol stearate to PEG-100 stearate, cetostearyl alcohol being cetostearyl alcohol and PEG-20 stearate: glycerol stearate and PEG-100 stearate: cetostearyl alcohol= (0.1-5): (0.1 to 5): (0.1 to 5).

12. The cosmetic product according to claim 11, wherein the mass ratio of cetostearyl alcohol to PEG-20 stearate, glycerol stearate to PEG-100 stearate, cetostearyl alcohol is cetostearyl alcohol to PEG-20 stearate: glycerol stearate and PEG-100 stearate: cetostearyl alcohol= (0.1-3): (0.1 to 3): (0.1 to 3).

13. The cosmetic product according to claim 11, wherein the mass ratio of cetostearyl alcohol to PEG-20 stearate, glycerol stearate to PEG-100 stearate, cetostearyl alcohol is cetostearyl alcohol to PEG-20 stearate: glycerol stearate and PEG-100 stearate: cetostearyl alcohol=1.5: 0.5:1.

14. The method for preparing the cosmetic according to any one of claims 8 to 9, characterized by comprising the steps of:

(3) Adding the water phase into the oil phase, and homogenizing at 80-90 ℃;

(4) And cooling to 40-50 ℃, adding the pH regulator and the moisturizing composition, and uniformly stirring to obtain the cosmetic.