CN111297699A

CN111297699A - Moisturizing body lotion with good liquid crystal structure and preparation method thereof

Info

Publication number: CN111297699A
Application number: CN202010037356.8A
Authority: CN
Inventors: 李少芸; 林天贤; 陈岱宜; 魏少卿; 辛海钏; 崔凤玲; 黄树聪; 刘锦波
Original assignee: Mingchen Health Co ltd
Current assignee: Mingchen Health Co ltd
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2020-06-19

Abstract

The invention discloses a moisturizing body lotion with a liquid crystal structure and a preparation method thereof. The moisturizing body lotion is prepared from the following components in percentage by weight: 3% -5% of an emulsifier; 1% -2% of an oil phase thickening agent; 10% -20% of grease; 3% -10% of humectant; 0.1 to 2 percent of water-soluble polymer thickener; 0.2 to 0.6 percent of preservative; 0.02% -0.05% of an aromatizer; 0.02% -0.05% of chelating agent; the balance of water. The preparation method is simple, and all the components are mixed in batches and are mixed uniformly in sequence. The body lotion has light spreadability and comfortable skin feel, can form a liquid crystal film with a water retention function on the skin, obviously reduces the percutaneous water loss rate, and has an excellent effect of keeping the skin moisture.

Description

Moisturizing body lotion with good liquid crystal structure and preparation method thereof

Technical Field

The invention relates to a body skin care product, belongs to the technical field of cosmetics, and particularly relates to a moisturizing body lotion with a liquid crystal structure and a preparation method thereof.

Background

Since liquid crystal is a thermodynamically stable phase state between crystalline states and has both anisotropy of crystals and fluidity of liquid, the liquid crystal is considered to be a fourth state other than three states of gas, liquid, and solid. In an O/W system, the emulsifier is arranged in an oil-water interface in an oriented way, a multilayer liquid crystal structure of ordered oil, emulsifier and water can be formed, and a certain amount of water is contained between liquid crystal layers, so that the relative slippage is easy, and the spreading on the surface of skin is facilitated, therefore, the skin feel is comfortable, and the skin-friendly property is good.

In recent years, the tendency to apply liquid crystal emulsification to cosmetics has increased greatly. Liquid crystal emulsification is a unique mechanism that encapsulates the skin cosmetic active ingredients of cosmetics, and its constituent ingredients are similar to skin lipids. Therefore, the intercellular lipid layer of the skin can be compensated and improved, thereby preventing the evaporation of moisture of the skin and preventing the external foreign materials from invading the skin, thereby protecting the skin.

With the continuous improvement of the living standard of the substances, the pursuit of beauty of people is also improved, and the body milk becomes an indispensable part in the skin care of women. However, many body lotions on the market at present have a series of problems of poor spreadability, stickiness, poor moisture retention and the like, and are difficult to meet the requirements of consumers.

Therefore, there is a need for a moisturizing body lotion having a liquid crystal structure with more excellent performance.

Disclosure of Invention

In view of the above-mentioned disadvantages of the prior art, an object of the present invention is to provide a moisturizing body lotion having a good liquid crystal structure, which has light spreadability and comfortable skin feel, and can form a liquid crystal film having a moisturizing function on the skin, significantly reduce the rate of moisture loss through the skin, and have an excellent effect on maintaining the moisture content of the skin.

The invention also aims to provide a preparation method and application of the moisturizing body lotion with a good liquid crystal structure.

The present invention is realized by the following technical means.

A body lotion with liquid crystal structure comprises arachidonol glucoside (and) arachidonol (and) behenyl alcohol, oil phase thickener, oil, water soluble polymer thickener, humectant, antiseptic, perfuming agent, chelating agent and water; the paint comprises the following components in percentage by mass:

arachidyl alcohol glucoside: 0.5 to 1 percent;

arachidyl alcohol: 1.5% -3%;

behenyl alcohol: 0.5 to 1.5 percent;

oil phase thickener: 1.5 percent

Grease: 10% -20%;

humectant: 3% -10%;

water-soluble polymer thickener: 0.1% -2.0%;

preservative: 0.2 to 0.6 percent;

chelating agent: 0.02% -0.05%;

water: and (4) the balance.

Further, the body lotion with the liquid crystal structure comprises the following components in percentage by mass:

3.5 to 4.5 percent of emulsifier;

1.5 to 1.8 percent of oil phase thickening agent;

12% -18% of grease;

5% -8% of a humectant;

0.5 to 1.5 percent of water-soluble polymer thickening agent;

0.3 to 0.5 percent of preservative;

0.03% -0.05% of an aromatizer;

0.03% -0.05% of chelating agent;

the balance of water.

arachidyl alcohol glucoside: 0.875%;

arachidyl alcohol: 2.7 percent;

behenyl alcohol: 1.4 percent;

oil phase thickener: 1.5 percent;

grease: 15 percent;

water-soluble polymer thickener: 0.8 percent;

humectant: 8.05 percent;

preservative: 0.6 percent;

an aromatizing agent: 0.05 percent;

chelating agent: 0.05 percent;

water: and (4) the balance.

Further, the oil phase thickener is one of glyceryl stearate and cetearyl alcohol.

Further, the oil phase thickener is cetearyl alcohol.

Further, the oil and fat is at least one of caprylic/capric triglyceride, isononyl isononanoate, polydimethylsiloxane, ethylhexyl palmitate, cyclopentadimethylsiloxane, white mineral oil and macadamia nut oil.

Further, the oil and fat is a mixture of caprylic/capric triglyceride, isononyl isononanoate, ethylhexyl palmitate, polydimethylsiloxane and macadamia nut oil.

Further, the water-soluble high-molecular thickening agent is one or a mixture of more than two of sodium acrylate/sodium acryloyldimethyl taurate copolymer (and) isohexadecane (and) polysorbate-80, polyacrylate cross-linked polymer-6, sodium polyacrylate, polyacrylic acid polymer, xanthan gum and hydroxyethyl cellulose.

Further, the water-soluble polymeric thickener is a mixture of sodium acrylate/sodium acryloyldimethyl taurate copolymer (and) isohexadecane (and) polysorbate-80 and xanthan gum.

Further, the humectant is at least one of polyglyceryl ether-26, propylene glycol, glycerin, betaine, polysaccharide and sodium hyaluronate.

Further, the humectant is a mixture of polyglyceryl ether-26, glycerin and sodium hyaluronate.

Further, the preservative is at least one of phenoxyethanol, ethylhexyl glycerol, p-hydroxyacetophenone, glyceryl caprylate and caprylhydroxamic acid.

Further, the preservative is a mixture of phenoxyethanol and ethylhexyl glycerin.

Further, at least one of the chelating agents EDTA-2Na and EDTA-4 Na.

Further, the chelating agent is EDTA-2 Na.

In addition, the invention also provides a preparation method of the moisturizing body lotion with good liquid crystal structure, which comprises the following steps:

s1: mixing water, humectant and part of water-soluble polymer thickener, heating to 80-85 deg.C, stirring for 15 min to obtain water phase;

s2: mixing arachidol glucoside, behenyl alcohol, arachidol, oil phase thickener and emollient oil, heating to 80-85 deg.C, stirring for 15 min under heat preservation, and dissolving completely to obtain oil phase;

s3: adding the water phase into the oil phase under stirring, adding another part of the polymer thickener, stirring and keeping the temperature for 10 minutes, homogenizing for 8 minutes under the condition that the rotating speed is 3000r/min, and keeping the temperature for 10 minutes continuously; and (3) starting to slowly cool down at a stirring speed of 600rpm, cooling to 45 ℃, adding auxiliary materials, stirring for 30 minutes, inspecting, and discharging after the materials are qualified.

Further, in the method for preparing the moisturizing body milk with the liquid crystal structure, in step S1, the part of the water-soluble polymer thickener comprises the following components: 0.2% xanthan gum;

in step S3, another part of the polymeric thickener comprises the following components: 0.21-0.24% of sodium acrylate/sodium acryloyldimethyl taurate copolymer, 0.12-0.15% of isohexadecane, 0.03-0.06% of polysorbate-80, 0.015% of sorbitan oleate and 0.135-0.225% of water.

By means of the technical scheme, the invention has the following beneficial effects:

1) the moisturizing body lotion can form more uniform, bright and complete lamellar liquid crystal structures by reasonably matching the arachidonol glucoside, the higher fatty alcohol, the grease and the high-molecular thickening agent, and the formed liquid crystal structures are stable;

2) the moisturizing body lotion has a good liquid crystal structure, contains bound water, can provide more moisture for the skin, and has an excellent moisturizing function.

Drawings

Fig. 1 is a microphotograph of the moisturizing body milks prepared in examples 1 to 6 and comparative example 7.

Fig. 2 is a photomicrograph of moisturizing body milk prepared using different processes.

Detailed Description

The invention will be further explained and illustrated with reference to specific embodiments, but the invention is not limited to the following embodiments.

The invention discloses a body lotion with a liquid crystal structure, which comprises the following components in percentage by weight: 0.5 to 1 percent of arachidyl alcohol glucoside, 1.5 to 3 percent of arachidyl alcohol, 0.5 to 1.5 percent of behenyl alcohol, 1.5 percent of oil phase thickening agent, 10 to 20 percent of grease, 3 to 10 percent of humectant, 0.1 to 2.0 percent of water-soluble polymer thickening agent, 0.2 to 0.6 percent of preservative, flavoring agent, 0.02 to 0.05 percent of chelating agent and the balance of water.

The source, the effect description and the principle description that the liquid crystal structure can be formed by compounding the main component raw materials are as follows:

1. emulsifier arachidyl glucoside (and) behenyl alcohol (and) arachidyl alcohol, which is a novel emulsifier derived from materials of vegetable origin. It is an accelerator for liquid crystal formation, has soft and light skin feeling, and is an emulsifier with long-acting moisturizing function.

2. The oil phase thickener cetearyl alcohol, which is fatty alcohol from palm and coconut tree, plays a role in thickening and stabilizing in the formula and can be used as a coemulsifier. Multiple tests show that the hexadecanol and octadecanol are used as the co-emulsifier, so that the liquid crystal has more uniform liquid crystal, stable formula and better skin feel.

3. Fat (1): isononyl isononanoate is light synthetic oil, does not feel greasy when being used for skin, has good spreadability, overcomes the defect that natural oil is too greasy, overcomes the defect that mineral oil has poor air permeability, and is relatively ideal oil for cosmetics; multiple tests show that the isononyl isononanoate is favorable for the formulation to form a larger and uniform liquid crystal.

4. Fat (2): caprylic/capric triglyceride, which is a vegetable-derived oil, is an excellent moisturizing oil, has good spreadability, gives the skin a slippery but not greasy feeling, and is easily absorbed by the skin. Multiple tests show that the liquid crystal composition can also synergistically improve the liquid crystal effect of the formula.

5. Oil and fat (3): ethylhexyl palmitate is a synthetic oil, is an excellent skin softening agent, can make skin soft, tender and smooth without oily feeling, and is an ideal emollient.

6. Humectant (1): glycerol, a colorless and odorless viscous liquid, has the effects of moisturizing and locking water. A protective film can be formed on the surface of the skin, so that the skin is protected from being damaged by dust and impurities in the air, the immunity of the skin is improved, and the skin can be kept moist for a long time.

7. Humectant (2): polyglyceryl ether-26, which is a glycerol adduct of 26 moles of ethylene oxide, is used as a humectant and lubricant and has a smooth, fine feel. It has effects of softening and lubricating skin, and improving the sticky feeling of the product in semi-dry state.

8. Humectant (3): sodium hyaluronate is a humectant from plants, and an aqueous solution of sodium hyaluronate has strong viscoelasticity and lubricity, and can form a layer of moisture-preserving breathable film on the surface of skin to lock the moisture of the skin and keep the skin moist and bright.

9. Water-soluble polymer thickener (1): the xanthan gum is a biological gum prepared by taking corn starch as a raw material and utilizing xanthomonas campestris through biological engineering. Is a common thickening stabilizer.

10. Water-soluble polymer thickener (2): sodium acrylate/sodium acryloyldimethyl taurate copolymer (and) isohexadecane (and) polysorbate-80; it can increase the stability of the system, and multiple tests show that the thickener is favorable for the system to form a liquid crystal network structure and reduce the sensitivity of liquid crystal to temperature.

Example 1

A moisturizing body lotion with a liquid crystal structure comprises the following raw materials in the following table 1:

table 1 composition table of raw materials of body lotion for moisturizing with liquid crystal structure

Example 2

A moisturizing body lotion with a liquid crystal structure comprises the following raw materials in percentage by weight as shown in the following table 2:

table 2 composition table of raw materials of body lotion for moisturizing with liquid crystal structure

Example 3

A moisturizing body lotion with a liquid crystal structure comprises the following raw materials in percentage by weight as shown in the following table 3:

table 3 composition table of raw materials of body lotion for moisturizing with liquid crystal structure

Example 4

A moisturizing body lotion with a liquid crystal structure comprises the following raw materials in percentage by weight as shown in the following table 4:

TABLE 4A moisturizing body lotion with liquid crystal structure

Example 5

A moisturizing body lotion with a liquid crystal structure comprises the following raw materials in percentage by weight as shown in the following table 5:

TABLE 5 composition table of raw materials of body lotion for moisturizing with liquid crystal structure

Example 6

A moisturizing body lotion with a liquid crystal structure comprises the following raw materials in the following table 6:

table 6 composition table of raw materials of body lotion for moisturizing with liquid crystal structure

The method for preparing the moisturizing body milk with good liquid crystal structure of the above examples 1 to 6 comprises the following steps:

s1: mixing water, humectant and part of water-soluble polymer thickener xanthan gum, heating to 80-85 deg.C, stirring for 15 min to obtain water phase;

s3: adding the water phase into the oil phase under stirring, adding another part of the polymer thickener sodium acrylate/sodium acryloyldimethyl taurate copolymer (and) isohexadecane (and) polysorbate-80, stirring, maintaining the temperature for 10 min, homogenizing at 3000r/min for 8 min, and maintaining the temperature for 10 min; and (3) starting to slowly cool down at a stirring speed of 600rpm, cooling to 45 ℃, adding auxiliary materials, stirring for 30 minutes, inspecting, and discharging after the materials are qualified.

Comparative example 1

A general body lotion for moisturizing comprises the following raw materials in Table 7:

table 7 raw material composition table of general body lotion for moisturizing

Test example 1

1. Evaluation of liquid Crystal Effect

The test method comprises the following steps: the moisturizing body milks of examples 1 to 6 and the ordinary moisturizing body milk of comparative example 1 were placed on glass slides, the glass slides were covered, the glass slides were lightly pressed to form a uniformly spread thin layer, and the morphology of the sample was observed with a 59XC-PC type transflective polarizing microscope (eyepiece magnification: 10X, objective magnification: 20X; Shanghai optical Instrument Co., Ltd.).

The results show that: examples 1-3 and 5 all formed liquid crystal structures. The liquid crystal profile formed in the embodiment 5 is quite unclear, the number of the liquid crystals formed in the embodiment 1 is less than that formed in the embodiment 2, and the liquid crystal structure obtained by observation in the embodiment 3 is large in quantity, large in volume, clear in cross profile and optimal in effect. Whereas the moisturizing body milks of example 4, example 6 and comparative example 1 hardly observed a liquid crystal structure, as shown in fig. 1 to 2.

Therefore, the present invention further explains and explains the preparation process by selecting the best liquid crystal effect in combination with example 3.

The preparation process of the present invention is further explained and illustrated below with reference to example 3.

The first preparation process comprises the following steps:

the preparation method of the moisturizing body lotion with the liquid crystal structure comprises the following steps:

1) mixing arachidyl glucoside, arachidyl alcohol, behenyl alcohol, cetostearyl alcohol and grease, heating to 80-85 ℃, stirring for dissolving, and keeping the temperature for 15 minutes to obtain an oil phase;

2) adding the humectant, the chelating agent, part of the polymer thickener and water into a water kettle, heating to 80-85 ℃, stirring for dissolving, and keeping the temperature for 15 minutes to obtain a water phase;

3) adding the oil phase obtained in the step 1) into an emulsifying pot, adding the water phase into the emulsifying pot under stirring, adding the other part of the polymer thickener, keeping the temperature at 80-85 ℃, continuing stirring for 10 minutes, and starting homogenizing for 8 minutes; stirring and cooling at the rotating speed of 1200rpm, rapidly cooling with ice water to 40-50 ℃, adding auxiliary materials, stirring for 30 minutes, inspecting, and discharging after the auxiliary materials are qualified.

II, preparation process II

3) adding the oil phase obtained in the step 1) into an emulsifying pot, adding the water phase into the emulsifying pot under stirring, adding the other part of the polymer thickener, keeping the temperature at 80-85 ℃, continuing stirring for 10 minutes, and starting homogenizing for 8 minutes; stirring and cooling at the rotating speed of 600rpm, rapidly cooling with ice water to 40-50 ℃, adding auxiliary materials, stirring for 30 minutes, inspecting, and discharging after the materials are qualified.

III, preparation process III

3) adding the oil phase obtained in the step 1) into an emulsifying pot, adding the water phase into the emulsifying pot under stirring, adding the other part of the polymer thickener, keeping the temperature at 80-85 ℃, continuing stirring for 10 minutes, and starting homogenizing for 8 minutes; and (3) starting stirring at the rotating speed of 600rpm for cooling (medium-speed cooling), cooling to 40-50 ℃, adding auxiliary materials, stirring for 30 minutes, inspecting, and discharging after the materials are qualified.

Fourthly, preparation process IV

3) adding the oil phase obtained in the step 1) into an emulsifying pot, adding the water phase into the emulsifying pot under stirring, adding the other part of the polymer thickener, keeping the temperature at 80-85 ℃, continuing stirring for 10 minutes, and starting homogenizing for 8 minutes; stirring and cooling (slow cooling) at the rotating speed of 600rpm, cooling to 40-50 ℃, adding auxiliary materials, stirring for 30 minutes, inspecting, and discharging after the materials are qualified.

2. Preparation process test example:

the test method comprises the following steps: the moisturizing body creams prepared by the 4 different processes are respectively placed on a glass slide, the glass slide is covered, the glass slide is lightly covered to enable the sample to form a uniformly spread thin layer, and then a 59XC-PC type transmission-reflection polarizing microscope (the magnification of an ocular lens is 10 x, the magnification of an objective lens is 20 x; Shanghai optical instrument factory) is used for observing the shape of the sample.

The results show that: stirring at 600rpm and slow cooling resulted in the largest amount of liquid crystal, while stirring at 1200rpm or fast cooling resulted in adverse and destructive liquid crystal formation.

In conclusion, the moisturizing body lotion with a good liquid crystal structure provided by the invention can form more uniform, bright and complete lamellar liquid crystal structures by reasonably matching the emulsifier, the higher fatty alcohol, the grease and the high-molecular thickener and adjusting the interface accumulation parameters through a reasonable preparation process, and the formed liquid crystal structures are stable.

3. And (3) moisture retention efficacy evaluation:

according to the evaluation guidance of the moisturizing efficacy of the cosmetics in the light industry standard QB/T4256-.

4. The test method comprises the following steps:

selecting 70 healthy volunteers (30 males and 30 females with age of 25-50 years), dividing into 7 groups, resting for 1h in an environment with temperature of 20-22 ℃ and relative humidity of 50 +/-10%, testing initial skin moisture content by using an MC960 skin multifunctional measuring instrument (Courage + khazaka, Germany), and enabling 7 groups of volunteers to respectively use the moisturizing body milk of examples 1-6 and the comparative example according to the ratio of 2mg/cm²The amount was applied to the inner forearm area (5 cm. times.5 cm) of the volunteer, the volunteer was allowed to sit still, the moisture content of the skin was measured after 0.5h, 1h, 1.5h, 2h, and 4h, respectively, and the MMV growth rate (. DELTA.MMV) was calculated by the following formula:

Δ MMV ═ MMVn-MMV0)/MMV0 × 100%, where MMVn is the skin moisture content after sample application and MMV0 is the initial skin moisture content.

The calculated Δ MMV data is shown in the following table:

table 8 Δ MMV data (%)'s of moisturizing body milks of examples 1 to 6 and comparative example

As can be seen from Table 8: in 4h of the test, the skin moisture content value of the volunteers who applied the moisturizing body milks of examples 1 to 6 had a higher growth rate than the volunteers who applied the moisturizing body milks of the comparative example, and the skin moisture content value of the volunteers who applied the moisturizing body milks of example 3 had the highest growth rate. Namely, the moisturizing performance of the moisturizing body milk with the liquid crystal structure of the invention is better than that of the ordinary moisturizing body milk of the comparative example.

In conclusion: the emulsifier molecules in the moisturizing body milk with the liquid crystal structure can form the liquid crystal structure, are arranged orderly, can combine more water, can increase the water content of the horny layer, and along with the water loss, the original ordered structure can be converted into a disordered lamellar liquid crystal structure, a compact liquid crystal water-containing oil film can be formed on the surface of the skin, the percutaneous water loss can be prevented for a long time, and the moisturizing effect can be enhanced.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A moisturizing body lotion with a liquid crystal structure, which is characterized in that: the moisturizing body lotion is prepared from the following components in percentage by weight:

3% -5% of an emulsifier;

1% -2% of an oil phase thickening agent;

10% -20% of grease;

3% -10% of humectant;

0.1 to 2 percent of water-soluble polymer thickener;

0.2 to 0.6 percent of preservative;

0.02% -0.05% of an aromatizer;

0.02% -0.05% of chelating agent;

the balance of water.

2. The moisturizing body lotion with liquid crystal structure of claim 1, wherein: the moisturizing body lotion is prepared from the following components in percentage by weight:

3.5 to 4.5 percent of emulsifier;

1.5 to 1.8 percent of oil phase thickening agent;

12% -18% of grease;

5% -8% of a humectant;

0.5 to 1.5 percent of water-soluble polymer thickening agent;

0.3 to 0.5 percent of preservative;

0.03% -0.05% of an aromatizer;

0.03% -0.05% of chelating agent;

the balance of water.

3. The moisturizing body lotion with liquid crystal structure of claim 1, wherein: the composite material comprises the following components in percentage by weight:

5% of an emulsifier;

1.5% of an oil phase thickening agent;

15% of grease;

8.05 percent of humectant;

0.8 percent of water-soluble polymer thickener;

0.6 percent of preservative;

0.05% of an aromatizing agent;

0.05% of chelating agent;

the balance of water.

4. The moisturizing body lotion with liquid crystal structure of any one of claims 1 to 3, wherein:

the emulsifier is arachidyl alcohol glucoside (and) behenyl alcohol (and) arachidyl alcohol;

the oil phase thickening agent is one or a mixture of cetostearyl alcohol and glyceryl stearate;

the oil ester is one or a mixture of more than two of caprylic/capric triglyceride, polydimethylsiloxane, isononyl isononanoate, ethylhexyl palmitate and white oil, and the vegetable oil is macadamia nut oil.

5. The moisturizing body lotion with liquid crystal structure of any one of claims 1 to 3, wherein:

the humectant is one or more selected from glycerol, 1, 3-propylene glycol, polyglyceryl ether-26, sodium hyaluronate, betaine, and polysaccharide humectant.

6. The moisturizing body lotion with liquid crystal structure of any one of claims 1 to 3, wherein:

the water-soluble high-molecular thickening agent is one or more than two of sodium acrylate/sodium acryloyldimethyl taurate copolymer (and) isohexadecane (and) polysorbate-80, polyacrylate cross-linked polymer-6, sodium polyacrylate, polyacrylic acid polymer, xanthan gum and hydroxyethyl cellulose.

7. The moisturizing body lotion with liquid crystal structure of any of claims 1 to 3, wherein: the preservative is at least one of phenoxyethanol, ethylhexyl glycerol, p-hydroxyacetophenone, glyceryl caprylate and caprylhydroxamic acid.

8. The moisturizing body lotion with liquid crystal structure of any of claims 1 to 3, wherein: the chelating agent is disodium ethylene diamine tetraacetate.

9. A method for preparing the moisturizing body milk with liquid crystal structure of any one of claims 1 to 8, comprising the steps of:

s3: adding the water phase into the oil phase under stirring, adding another part of the polymer thickener, stirring and keeping the temperature for 10 minutes, homogenizing for 8 minutes under the condition that the rotating speed is 3000r/min, and keeping the temperature for 10 minutes continuously; and starting cooling, stirring and cooling, cooling to 45 ℃, adding auxiliary materials, stirring for 30 minutes, inspecting, and discharging after the materials are qualified.

10. The method for preparing the moisturizing body lotion with liquid crystal structure of claim 9, wherein: in step S1, the partial water-soluble polymer thickener comprises the following components: 0.2% xanthan gum;