Mild exfoliating scrub cream containing plant cellulose particles and essential oil

Abstract

The invention discloses mild exfoliating scrub cream containing plant cellulose particles and essential oil, and relates to the technical field of cosmetics. The mild exfoliating scrub cream containing plant cellulose particles and essential oil is prepared from the following raw materials: 16 / 18 alcohol, 26 # white oil, monoglyceride, 75A, QS305, lemon yellow, brilliant blue, wrapped plant cellulose particles, peppermint essential oil, chlorphenesin, phenoxyethanol and water. The invention also provides a preparation method of the composition. Compared with the prior art, the prepared mild exfoliating scrub cream containing the plant cellulose particles and the essential oil has the advantages that the physical exfoliating and cleaning capacities of the walnut shells are maintained, the scraping feeling and scorching hot stabbing pain of the hard particles to the skin are reduced, the cutin injury is relieved, the use comfort is improved, the formula is stable, the process is simple, and the mild exfoliating scrub cream is suitable for industrial production. The method is suitable for industrial production and daily mild exfoliating application.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cosmetics, in particular to a mild exfoliating scrub containing plant cellulose particles and essential oil. BACKGROUND

[0002] A scrub is a skin cleansing preparation, taking surfactants, oils or high molecular colloids as the matrix, and dispersing insoluble scrub particles within a certain particle size range in it. When used, mechanical friction is generated by rubbing and massaging, which cooperates with the cleaning system to remove sebum, dirt and makeup on the skin surface and part of the old and waste keratin, so as to achieve the purpose of cleaning and exfoliating.

[0003] In recent years, cleaning cosmetics containing scrub particles have been widely used for daily exfoliating care of the face and body, among which silica is widely used as a scrubbing agent due to its wide source and strong ability to remove old and waste keratin. Such products usually construct a cream base with an oil phase, a surfactant colloid framework, and uniformly disperse a certain particle size range of scrubbing agent in it. Through mechanical friction during the rubbing and massaging process, the stratum corneum is physically exfoliated, and the product has the function of cleaning. However, the existing scrubbing agent often has the problem of pain and easy damage to the skin during use, which affects its performance.

[0004] CN112618444A discloses a multifunctional cleaning scrub, which comprises A-phase component, B-phase component, C-phase component and citric acid; the A-phase component comprises water and surfactant HM60; the B-phase component comprises plant oil, synthetic oil and mineral oil; the C-phase component comprises scrubbing particles from plant sources and mineral sources; the application also discloses a preparation method of the multifunctional cleaning scrub, comprising the following steps: S1 processing the A-phase component; S2 processing the B-phase component; S3 mixing processing; S4 processing the C-phase component; the application provides the components of the scrub and various combination modes thereof, and provides a preparation method of the three components combined with citric acid. The obtained scrub has the functions of bathing, cleansing, removing makeup, scrubbing, moisturizing and shampooing, and has excellent viscosity, strong structure, stable suspension of various scrub particles, high cleaning strength, good stability for various skin types, and good stability; but it is difficult to balance the cleaning strength and skin feeling. SUMMARY

[0005] In view of the above defects of the prior art, the technical problem to be solved by the present application is to reduce the mechanical scraping of hard particles on the skin and the resulting keratin damage and transdermal water loss by modifying the structure and surface environment of the plant cellulose particles, thereby improving the mildness and skin tolerance of the scrub cream, instead of simply relying on reducing the particle amount or sacrificing the cleaning power to obtain mildness.

[0006] To achieve the above object, the present application provides a mild keratolytic scrub cream containing plant cellulose particles and essential oil, comprising the following raw materials: phase A, phase B, phase C, phase D;

[0007] The phase B comprises 16 / 18 alcohol, 26# white oil, monoglyceride, 75A;

[0008] The phase C comprises QS305, lemon yellow, bright blue;

[0009] The phase D comprises plant cellulose particles, peppermint essential oil, chlorphenesin, phenoxyethanol;

[0010] The phase A is water;

[0011] The 75A is a mixture of glyceryl stearate, PEG-40 sorbitan stearate, and potassium cetyl phosphate;

[0012] The QS305 is a mixture of polyacrylamide, C13-14 isoparaffin, and laureth-7;

[0013] Preferably, the mild keratolytic scrub cream containing plant cellulose particles and essential oil comprises the following raw materials: 0.8-2wt% 16 / 18 alcohol, 1-2wt% 26# white oil, 0.3-1wt% monoglyceride, 0.3-0.8wt% 75A, 0.5-1wt% QS305, 0.01-0.03wt% lemon yellow, 0.003-0.02wt% bright blue, 0.3-1wt% plant cellulose particles, 0.1-0.4wt% peppermint essential oil, 0.05-0.2wt% chlorphenesin, 0.2-0.6wt% phenoxyethanol, and the balance is water;

[0014] The 75A is a mixture of glyceryl stearate, PEG-40 sorbitan stearate, and potassium cetyl phosphate in a mass ratio of 45-60:25-40:10-20;

[0015] The QS305 is a mixture of polyacrylamide, C13-14 isoparaffin, and laureth-7 in a mass ratio of 3-5:70-80:15-25;

[0016] The plant cellulose particles are walnut shell particles; the walnut shell particles are obtained by washing, drying, crushing and screening walnut shells as raw materials, and have an average particle size of 150-500 pm.

[0017] The plant cellulose particles are derived from plant hard tissues such as walnut shells and have a certain hardness and irregular microstructure, and are the core carrier for achieving physical exfoliation. After the particle size is controlled and the edge is rounded, the particles mainly mechanically exfoliate the stratum corneum by rolling and mild friction, helping to remove old and waste keratin and attached dirt. The hard particles are easy to cause scratching and micro skin damage.

[0018] Preferably, a mild exfoliating scrub containing plant cellulose particles and essential oils includes the following raw materials: phase A, phase B, phase C, phase D;

[0019] The B phase includes 16 / 18 alcohol, 26# white oil, monoglyceride, 75A;

[0020] The C phase includes QS305, lemon yellow, bright blue;

[0021] The D phase includes wrapped plant cellulose particles, peppermint essential oil, chlorphenesin, phenoxyethanol;

[0022] The A phase is water.

[0023] Further preferably, a mild exfoliating scrub containing plant cellulose particles and essential oils includes the following raw materials: 0.8-2wt% 16 / 18 alcohol, 1-2wt% 26# white oil, 0.3-1wt% monoglyceride, 0.3-0.8wt% 75A, 0.5-1wt% QS305, 0.01-0.03wt% lemon yellow, 0.003-0.02wt% bright blue, 0.3-1wt% wrapped plant cellulose particles, 0.1-0.4wt% peppermint essential oil, 0.05-0.2wt% chlorphenesin, 0.2-0.6wt% phenoxyethanol, and the balance is water;

[0024] The preparation method of the wrapped plant cellulose particles includes the following steps:

[0025] S1, control the temperature of 80-100g water at 25-35℃, add 0.5-3g sodium γ-polyglutamate and 0.1-1g sodium hyaluronate, continue to stir for 30-60min, to obtain a mixed solution; add 0.1-3g additive to the above mixed solution and continue to stir for 10-20min, adjust the pH to 6-7, to obtain a composite solution;

[0026] S2. Add 80-100g of plant cellulose particles to the above composite solution and mix evenly. Then, add 0.1-1wt% of metal salt aqueous solution while stirring and continue stirring for 30-90 minutes. The molar ratio of metal ions to carboxyl groups is 0.05-0.2. After the mixture is finished, filter to collect the precipitate, wash and dry it to obtain the coated plant cellulose particles.

[0027] The additive is at least one of silk fibroin hydrolysate and ecoxib. Preferably, the additive is a mixture of silk fibroin hydrolysate and ecoxib in a mass ratio of (3-8):1.

[0028] The metal salt is at least one of CaCl2 and potassium aluminum sulfate.

[0029] Plant cellulose particles, treated with particle size control and rounding passivation, serve as exfoliating carriers. A hydrogel coating layer formed by cross-linking sodium γ-polyglutamate and sodium hyaluronate is constructed on the surface, endowing the particles with elasticity and water retention, buffering the direct impact of the hard core on the skin. Hydrolyzed silk fibroin is introduced into the coating layer to improve film-forming properties and surface smoothness, allowing the particles to roll gently on the skin. Simultaneously, ecoxib is added to reduce the stress response of mechanical friction and instantaneous dryness on the stratum corneum. 2+ The carboxyl groups help maintain a balance between stability and softness in the coating layer, thereby significantly improving the gentleness and comfort of the exfoliation process while ensuring the exfoliation effect.

[0030] The present invention also discloses a method for preparing a mild exfoliating scrub containing plant cellulose particles and essential oils.

[0031] A method for preparing a gentle exfoliating scrub containing plant cellulose particles and essential oils includes the following steps: Step 1: Heat the A phase raw material to 45-50℃, add the B phase raw material, and stir at a stirring rate of 100-300r / min until the mixture is uniform.

[0032] Step 2: Continue heating the mixture of phases A and B to 80-90℃ and homogenize it twice at a stirring rate of 300-800 r / min, each time for 1-10 min, with an interval of 10-20 min between the two homogenizations; then maintain it at 80-90℃ and continue emulsifying at a stirring rate of 300-800 r / min for 60-90 min.

[0033] Step 3: When the system is cooled to 70-80℃, add the C phase raw material, homogenize once at a stirring speed of 300-800 r / min for 5 min, and then continue stirring at a stirring speed of 100-300 r / min for 10-30 min.

[0034] Step 4, continue to cool down, when the temperature drops to 40-50℃, add D phase raw materials as needed, stir at a stirring rate of 100-300 r / min for 10-30 min; after stirring, defoam and discharge to obtain a mild exfoliating scrub containing plant cellulose particles and essential oil.

[0035] Advantages of the present application:

[0036] 1. Compared with the prior art, the present application constructs a hydrogel coating layer on the surface of plant cellulose particles such as walnut shells by cross-linking sodium gamma-polyglutamate, sodium hyaluronate and metal ions, and introduces silk fibroin hydrolysate and ecoloid, so that the outer layer of the particles has certain elasticity and lubricity, effectively weakening the direct impact force of the hard core on the stratum corneum.

[0037] 2. Compared with the prior art, the present application uses 16 / 18 alcohol, 26 # White oil, monoglyceride and 75A to construct the oil phase skeleton, and cooperates with the QS305 thickening suspension system composed of polyacrylamide, C13-14 isoparaffin and laureth-7 to form a stable structure matrix. The matrix has suitable viscosity and rheological property, can effectively suspend and uniformly disperse the plant cellulose particles, avoid obvious settlement or stratification during storage, and at the same time, the application is smooth and does not pull the skin during application, which is conducive to the exertion of the mild exfoliating effect of the coated particles. DETAILED DESCRIPTION

[0038] The endpoints of the ranges and any values disclosed in the present application are not limited to the precise values recited as the exact dimensions are not critical to the present application. The ranges and values should be interpreted as being approximate such that modest variation from the recited values of the endpoints is intended. Individual values within the ranges or endpoints can be combined to form new ranges or subranges and any value within the new ranges or subranges is also contemplated as being disclosed in the present application.

[0039] The preparation method of the silk fibroin hydrolysate used in the embodiment is as follows: the silk is placed in a degumming liquid to mix uniformly (the mass ratio of silk to degumming liquid is 1:30), heated to 90 DEG C for 30 min, then centrifuged, washed and dried to obtain pretreated silk; the pretreated silk is cut into 5 mm small pieces, added into a pH 8.5 phosphate buffer to prepare a 5 wt% silk suspension, heated to 45 DEG C for treatment, added with trypsin (the addition amount of trypsin is 1 wt% of the pretreated silk), continuously stirred for 5 h, heated to 90 DEG C for 20 min to inactivate, filtered, concentrated and dried to obtain the silk fibroin hydrolysate; the degumming liquid is obtained by adding sodium carbonate into water to obtain a 0.5 wt% sodium carbonate solution, and then adding 0.1 wt% fatty alcohol polyoxyethylene ether AEO to mix uniformly.

[0040] The other raw materials not mentioned are common raw materials, and the above description is only for the purpose of illustrating the present application and should not be construed as a strict limitation of the present application. Those skilled in the art can directly purchase or prepare the same / similar raw materials.

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the specific embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0042] Embodiment 1

[0043] A mild exfoliating scrub containing plant cellulose particles and essential oils, comprising the following raw materials: phase A, phase B, phase C, phase D; wherein the phase B is composed of 16 / 18 alcohol, 26# white oil, monoglyceride, 75A; the phase C is composed of QS305, lemon yellow, bright blue; the phase D is composed of plant cellulose particles, peppermint essential oil, chlorphenesin, phenoxyethanol; the phase A is water. The specific amount is 1.2wt% 16 / 18 alcohol, 1.5wt% 26# white oil, 0.6wt% monoglyceride, 0.5wt% 75A, 0.75wt% QS305, 0.0145wt% lemon yellow, 0.0067wt% bright blue, 0.5wt% plant cellulose particles, 0.2wt% peppermint essential oil, 0.1wt% chlorphenesin, 0.4wt% phenoxyethanol, and the balance is water.

[0044] The 75A is composed of glyceryl stearate, PEG-40 sorbitan stearate, potassium cetyl phosphate, and mixed according to a mass ratio of 5:3:2;

[0045] The QS305 is composed of polyacrylamide, C13-14 isoparaffin, laureth-7, and mixed according to a mass ratio of 4:74:22;

[0046] The plant cellulose particles are walnut shell particles; the walnut shell particles are obtained by using walnut shell as raw material, cleaning, drying, crushing and sieving, and the average particle size is 150µm.

[0047] A preparation method of a mild exfoliating scrub containing plant cellulose particles and essential oils, comprising the following steps: step 1, heating the phase A raw material to 45℃, adding the phase B raw material, and stirring at a stirring rate of 300r / min until uniform mixing;

[0048] Step 2, continue to heat the mixture of A, B phase to 85℃, homogenize twice at a stirring rate of 500r / min, each for 5min, and interval 10min between the two homogenizations; then maintain at 85℃, continue to emulsify for 90min at a stirring rate of 500r / min;

[0049] Step 3, cool the system to 70℃, add the raw materials of C phase, homogenize once at a stirring rate of 500r / min, for 5min, then continue to stir for 30min at a stirring rate of 300r / min;

[0050] Step 4, continue to cool down, when the temperature drops to 45℃, add the raw materials of D phase as needed, stir for 30min at a stirring rate of 300r / min; after stirring, defoam and discharge, to obtain a mild exfoliating scrub containing plant cellulose particles and essential oil.

[0051] Example 2

[0052] A mild exfoliating scrub containing plant cellulose particles and essential oil, comprising the following raw materials: A phase, B phase, C phase, D phase; wherein the B phase is composed of 16 / 18 alcohol, 26# white oil, monoglyceride, 75A; the C phase is composed of QS305, lemon yellow, bright blue; the D phase is composed of wrapped plant cellulose particles, peppermint essential oil, chlorphenesin, phenoxyethanol; the A phase is water. The specific amount is 1.2wt% 16 / 18 alcohol, 1.5wt% 26# white oil, 0.6wt% monoglyceride, 0.5wt% 75A, 0.75wt% QS305, 0.0145wt% lemon yellow, 0.0067wt% bright blue, 0.5wt% wrapped plant cellulose particles, 0.2wt% peppermint essential oil, 0.1wt% chlorphenesin, 0.4wt% phenoxyethanol, and the balance is water;

[0053] The 75A is composed of glyceryl stearate, PEG-40 sorbitan stearate, potassium cetyl phosphate, mixed in a mass ratio of 5:3:2;

[0054] The QS305 is composed of polyacrylamide, C13-14 isoparaffin, laureth-7, mixed in a mass ratio of 4:74:22;

[0055] The preparation method of the wrapped plant cellulose particles comprises the following steps:

[0056] S1, control the temperature of 100g water at 35℃, add 2g sodium γ-polyglutamate and 0.5g sodium hyaluronate, continue to stir for 30min to obtain a mixed solution; add 1g additive to the above mixed solution, continue to stir for 20min, adjust the pH to 6.5 to obtain a composite solution;

[0057] S2, 90 g of plant cellulose particles are added to the above-mentioned complex solution and mixed uniformly, then 0.5 wt% CaCl2 aqueous solution is added under stirring and stirring is continued for 90 min, Ca 2+ The molar ratio of the carboxyl group is 0.1, and after filtration, the precipitate is washed and dried to obtain the wrapped plant cellulose particles.

[0058] The additive is mixed by silk fibroin hydrolysate and ecolomide at a mass ratio of 4:1.

[0059] The plant cellulose particles are walnut shell particles; the walnut shell particles are obtained by washing, drying, crushing and screening walnut shells as raw materials, and the average particle size is 150 µm.

[0060] A preparation method of a mild exfoliating scrub containing plant cellulose particles and essential oil, comprising the following steps: step 1, heating the A phase raw material to 45℃, adding the B phase raw material, stirring at a stirring rate of 300 r / min until uniform mixing;

[0061] Step 2, continue to heat the A, B phase mixture to 85℃, and perform two homogenizations at a stirring rate of 500 r / min, each for 5 min, with an interval of 10 min between the two homogenizations; then maintain at 85℃, continue to emulsify at a stirring rate of 500 r / min for 90 min;

[0062] Step 3, cool the system to 70℃, add the C phase raw material, homogenize once at a stirring rate of 500 r / min for 5 min, then continue to stir at a stirring rate of 300 r / min for 30 min;

[0063] Step 4, continue to cool down, when the temperature drops to 45℃, add the D phase raw material as needed, stir at a stirring rate of 300 r / min for 30 min; after stirring, degas and discharge to obtain a mild exfoliating scrub containing plant cellulose particles and essential oil.

[0064] Example 3

[0065] A mild exfoliating scrub containing plant cellulose particles and essential oil, comprising the following raw materials: phase A, phase B, phase C, phase D; wherein the B phase is composed of 16 / 18 alcohol, 26# white oil, monoglyceride, 75A; the C phase is composed of QS305, lemon yellow, bright blue; the D phase is composed of wrapped plant cellulose particles, peppermint essential oil, chlorphenesin, phenoxyethanol; the A phase is water. The specific amount is 1.2wt% 16 / 18 alcohol, 1.5wt% 26# white oil, 0.6wt% monoglyceride, 0.5wt% 75A, 0.75wt% QS305, 0.0145wt% lemon yellow, 0.0067wt% bright blue, 0.5wt% wrapped plant cellulose particles, 0.2wt% peppermint essential oil, 0.1wt% chlorphenesin, 0.4wt% phenoxyethanol, and the balance is water.

[0066] The 75A is composed of glyceryl stearate, PEG-40 sorbitan stearate, potassium cetyl phosphate, mixed in a mass ratio of 5:3:2;

[0067] The QS305 is composed of polyacrylamide, C13-14 isoparaffin, laureth-7, mixed in a mass ratio of 4:74:22;

[0068] The preparation method of the wrapped plant cellulose particles comprises the following steps:

[0069] S1, control the temperature of 100g water at 35℃, add 2g γ-polyglutamic acid sodium, 0.5g sodium hyaluronate, continue to stir for 30min to obtain a mixed solution; add 1g additive to the above mixed solution and continue to stir for 20min, adjust the pH to 6.5 to obtain a composite solution;

[0070] S2, mix 90g plant cellulose particles in the above composite solution uniformly, then add 0.5wt% CaCl2 aqueous solution under stirring and continue to stir for 90min, Ca 2+ The molar ratio of carboxyl groups is 0.1, and after the end, the precipitate is filtered, washed and dried to obtain wrapped plant cellulose particles.

[0071] The additive is silk fibroin hydrolysate.

[0072] The plant cellulose particles are walnut shell particles; the walnut shell particles are obtained by washing, drying, crushing and screening with walnut shell as raw material, and the average particle size is 150µm.

[0073] A preparation method of a mild exfoliating scrub containing plant cellulose particles and essential oil, comprising the following steps: step 1, heat the A phase raw material to 45℃, add the B phase raw material, and stir at a stirring rate of 300r / min until mixed uniformly;

[0074] Step 2, continue to heat the mixture of A, B phase to 85℃, homogenize twice at a stirring rate of 500r / min, each for 5min, and interval 10min between the two homogenizations; then maintain at 85℃, continue to emulsify for 90min at a stirring rate of 500r / min;

[0075] Step 3, cool the system to 70℃, add the raw materials of C phase, homogenize once at a stirring rate of 500r / min, for 5min, then continue to stir for 30min at a stirring rate of 300r / min;

[0076] Step 4, continue to cool down, when the temperature drops to 45℃, add the raw materials of D phase as needed, stir for 30min at a stirring rate of 300r / min; after stirring, defoam and discharge, to obtain a mild exfoliating scrub containing plant cellulose particles and essential oil.

[0077] Example 4

[0078] A mild exfoliating scrub containing plant cellulose particles and essential oil, comprising the following raw materials: A phase, B phase, C phase, D phase; wherein the B phase is composed of 16 / 18 alcohol, 26# white oil, monoglyceride, 75A; the C phase is composed of QS305, lemon yellow, bright blue; the D phase is composed of wrapped plant cellulose particles, peppermint essential oil, chlorphenesin, phenoxyethanol; the A phase is water. The specific amount is 1.2wt% 16 / 18 alcohol, 1.5wt% 26# white oil, 0.6wt% monoglyceride, 0.5wt% 75A, 0.75wt% QS305, 0.0145wt% lemon yellow, 0.0067wt% bright blue, 0.5wt% wrapped plant cellulose particles, 0.2wt% peppermint essential oil, 0.1wt% chlorphenesin, 0.4wt% phenoxyethanol, and the balance is water;

[0079] The 75A is composed of glyceryl stearate, PEG-40 sorbitan stearate, potassium cetyl phosphate, mixed in a mass ratio of 5:3:2;

[0080] The QS305 is composed of polyacrylamide, C13-14 isoparaffin, laureth-7, mixed in a mass ratio of 4:74:22;

[0081] The preparation method of the wrapped plant cellulose particles comprises the following steps:

[0082] S1, control the temperature of 100g water at 35℃, add 2g sodium γ-polyglutamate and 0.5g sodium hyaluronate, continue to stir for 30min to obtain a mixed solution; add 1g additive to the above mixed solution, continue to stir for 20min, adjust the pH to 6.5 to obtain a composite solution;

[0083] S2, 90 g of plant cellulose particles are added to the above composite solution and mixed uniformly, then 0.5 wt% CaCl2 aqueous solution is added under stirring for 90 min, and Ca 2+ The molar ratio of the carboxyl group is 0.1, and after filtration, the precipitate is washed and dried to obtain the plant cellulose particles.

[0084] The additive is ecolamol.

[0085] The plant cellulose particles are walnut shell particles; the walnut shell particles are obtained by washing, drying, crushing and sieving walnut shells as raw materials, and the average particle size is 150 µm.

[0086] A preparation method of a mild exfoliating scrub containing plant cellulose particles and essential oil, comprising the following steps: step 1, heating the A phase raw material to 45℃, adding the B phase raw material, and stirring at a stirring rate of 300 r / min until uniform mixing;

[0087] Step 2, continue to heat the A, B phase mixture to 85℃, and perform two homogenizations at a stirring rate of 500 r / min, each for 5 min, with an interval of 10 min between the two homogenizations; then maintain at 85℃, and continue to emulsify at a stirring rate of 500 r / min for 90 min;

[0088] Step 3, add the C phase raw material when the system is cooled to 70℃, and homogenize once at a stirring rate of 500 r / min for 5 min, then continue to stir at a stirring rate of 300 r / min for 30 min;

[0089] Step 4, continue to cool down, and when the temperature drops to 45℃, add the D phase raw material as needed, and stir at a stirring rate of 300 r / min for 30 min; after stirring, degas and discharge to obtain a mild exfoliating scrub containing plant cellulose particles and essential oil.

[0090] Example 5

[0091] A mild exfoliating scrub containing plant cellulose particles and essential oil, comprising the following raw materials: phase A, phase B, phase C, phase D; wherein the B phase is composed of 16 / 18 alcohol, 26# white oil, monoglyceride, 75A; the C phase is composed of QS305, lemon yellow, bright blue; the D phase is composed of wrapped plant cellulose particles, peppermint essential oil, chlorphenesin, phenoxyethanol; the A phase is water. The specific amount is 1.2wt% 16 / 18 alcohol, 1.5wt% 26# white oil, 0.6wt% monoglyceride, 0.5wt% 75A, 0.75wt% QS305, 0.0145wt% lemon yellow, 0.0067wt% bright blue, 0.5wt% wrapped plant cellulose particles, 0.2wt% peppermint essential oil, 0.1wt% chlorphenesin, 0.4wt% phenoxyethanol, and the balance is water.

[0092] The 75A is composed of glyceryl stearate, PEG-40 sorbitan stearate, potassium cetyl phosphate, mixed in a mass ratio of 5:3:2;

[0093] The QS305 is composed of polyacrylamide, C13-14 isoparaffin, laureth-7, mixed in a mass ratio of 4:74:22;

[0094] The preparation method of the wrapped plant cellulose particles comprises the following steps:

[0095] S1, control the temperature of 100g water at 35℃, add 2g γ-polyglutamic acid sodium, 0.5g sodium hyaluronate, continue to stir for 30min to obtain a mixed solution; add 1g additive to the above mixed solution and continue to stir for 20min, adjust the pH to 6.5 to obtain a composite solution;

[0096] S2, mix 90g plant cellulose particles in the above composite solution uniformly, continue to stir for 90min, filter the precipitate after the end, wash and dry to obtain wrapped plant cellulose particles.

[0097] The additive is composed of silk fibroin hydrolysate and ecolomide, mixed in a mass ratio of 4:1.

[0098] The plant cellulose particles are walnut shell particles; the walnut shell particles are obtained by washing, drying, crushing and screening with walnut shell as raw material, and the average particle size is 150µm.

[0099] A preparation method of a mild exfoliating scrub containing plant cellulose particles and essential oil, comprising the following steps: step 1, heat the A phase raw material to 45℃, add the B phase raw material, and stir at a stirring rate of 300r / min until mixed uniformly;

[0100] Step 2, continue to heat the mixture of A, B phase to 85℃, homogenize twice at a stirring rate of 500r / min, each for 5min, with an interval of 10min between the two homogenizations; then maintain at 85℃, continue to emulsify for 90min at a stirring rate of 500r / min;

[0101] Step 3, when the system is cooled to 70℃, add the raw materials of phase C, homogenize once at a stirring rate of 500r / min for 5min, then continue to stir for 30min at a stirring rate of 300r / min;

[0102] Step 4, continue to cool down, when the temperature drops to 45℃, add the raw materials of phase D as needed, stir for 30min at a stirring rate of 300r / min; after stirring, defoam and discharge to obtain a mild exfoliating scrub containing plant cellulose particles and essential oil.

[0103] Example 6

[0104] Basically the same as Example 2, the only difference is that:

[0105] The preparation method of the wrapped plant cellulose particles comprises the following steps:

[0106] S1, control the temperature of 100g water at 35℃, add 0.2g γ-polyglutamic acid sodium and 0.05g sodium hyaluronate, continue to stir for 30min to obtain a mixed solution; add 1g additive to the above mixed solution and continue to stir for 20min, adjust the pH to 6.5 to obtain a composite solution;

[0107] S2, add 90g plant cellulose particles to the above composite solution and mix uniformly, then add 0.5wt% CaCl2 aqueous solution under stirring and continue to stir for 90min, Ca 2+ The molar ratio of carboxyl groups is 0.1, and after filtration, the precipitate is washed and dried to obtain wrapped plant cellulose particles.

[0108] The additive is a mixture of silk fibroin hydrolysate and ecolomide in a mass ratio of 4:1.

[0109] The plant cellulose particles are walnut shell particles; the walnut shell particles are obtained by washing, drying, crushing and sieving walnut shells, and the average particle size is 150µm.

[0110] Example 7

[0111] Basically the same as Example 2, the only difference is that: the preparation method of the wrapped plant cellulose particles comprises the following steps:

[0112] S1, control the temperature of 100 g of water at 35℃, add 2 g of γ-polyglutamic acid sodium, 0.5 g of sodium hyaluronate, continue to stir for 30 min to obtain a mixed solution; adjust the pH to 6.5 to obtain a composite solution;

[0113] S2, add 90 g of plant cellulose particles to the above composite solution and mix uniformly, then add 0.5 wt% CaCl2 aqueous solution under stirring and continue to stir for 90 min, Ca 2+ The molar ratio of the carboxyl group is 0.1, and after the end, the precipitate is filtered, washed, and dried to obtain the wrapped plant cellulose particles.

[0114] The plant cellulose particles are walnut shell particles; the walnut shell particles are obtained by washing, drying, crushing, and screening walnut shells as raw materials, and the average particle size is 150 µm.

[0115] Example 8

[0116] The difference is only that:

[0117] The preparation method of the wrapped plant cellulose particles comprises the following steps:

[0118] S1, control the temperature of 100 g of water at 35℃, add 2 g of γ-polyglutamic acid sodium, 0.5 g of sodium hyaluronate, continue to stir for 30 min to obtain a mixed solution; add 1 g of an additive to the above mixed solution and continue to stir for 20 min, adjust the pH to 6.5 to obtain a composite solution;

[0119] S2, add 90 g of plant cellulose particles to the above composite solution and mix uniformly, then add 2 wt% CaCl2 aqueous solution under stirring and continue to stir for 90 min, Ca 2+ The molar ratio of the carboxyl group is 0.5, and after the end, the precipitate is filtered, washed, and dried to obtain the wrapped plant cellulose particles.

[0120] The additive is a mixture of silk fibroin hydrolysate and ecolomide in a mass ratio of 4:1.

[0121] The plant cellulose particles are walnut shell particles; the walnut shell particles are obtained by washing, drying, crushing, and screening walnut shells as raw materials, and the average particle size is 150 µm.

[0122] Example 9

[0123] A mild exfoliating scrub containing plant cellulose particles and essential oil, comprising the following raw materials: phase A, phase B, phase C, phase D; wherein the B phase is composed of 16 / 18 alcohol, 26# white oil, monoglyceride, 75A; the C phase is composed of QS305, lemon yellow, bright blue; the D phase is composed of wrapped plant cellulose particles, peppermint essential oil, chlorphenesin, phenoxyethanol; the A phase is water. The specific amount is 1.2wt% 16 / 18 alcohol, 1.5wt% 26# white oil, 0.6wt% monoglyceride, 0.5wt% 75A, 0.75wt% QS305, 0.0145wt% lemon yellow, 0.0067wt% bright blue, 0.5wt% wrapped plant cellulose particles, 0.2wt% peppermint essential oil, 0.1wt% chlorphenesin, 0.4wt% phenoxyethanol, and the balance is water.

[0124] The 75A is composed of glyceryl stearate, PEG-40 sorbitan stearate, potassium cetyl phosphate, mixed in a mass ratio of 5:3:2;

[0125] The QS305 is composed of polyacrylamide, C13-14 isoparaffin, laureth-7, mixed in a mass ratio of 4:74:22;

[0126] The preparation method of the wrapped plant cellulose particles comprises the following steps:

[0127] S1, control the temperature of 100g water at 35℃, add 2g γ-polyglutamic acid sodium, 0.5g sodium hyaluronate, continue to stir for 30min to obtain a mixed solution; add 1g additive to the above mixed solution and continue to stir for 20min, adjust the pH to 6.5 to obtain a composite solution;

[0128] S2, mix 90g plant cellulose particles in the above composite solution uniformly, then add 0.5wt% potassium aluminum sulfate aqueous solution under stirring and continue to stir for 90min, Al 3+ The molar ratio of carboxyl group to aluminum ion is 0.1, after filtering, the precipitate is obtained, washed and dried to obtain wrapped plant cellulose particles.

[0129] The additive is composed of silk fibroin hydrolysate and ecolomide, mixed in a mass ratio of 4:1.

[0130] The plant cellulose particles are walnut shell particles; the walnut shell particles are obtained by washing, drying, crushing and screening with walnut shell as raw material, and the average particle size is 150µm.

[0131] A preparation method of a mild exfoliating scrub containing plant cellulose particles and essential oil, comprising the following steps: step 1, heat the A phase raw material to 45℃, add the B phase raw material, and stir at a stirring rate of 300r / min until mixed uniformly;

[0132] Step 2, continue to heat the mixture of A, B phase to 85℃, homogenize twice at a stirring rate of 500 r / min, each for 5 min, with an interval of 10 min between the two homogenizations; then maintain at 85℃, continue to emulsify for 90 min at a stirring rate of 500 r / min;

[0133] Step 3, cool the system to 70℃, add the raw materials of phase C, homogenize once at a stirring rate of 500 r / min for 5 min, then continue to stir for 30 min at a stirring rate of 300 r / min;

[0134] Step 4, continue to cool down, when the temperature drops to 45℃, add the raw materials of phase D as needed, stir for 30 min at a stirring rate of 300 r / min; after stirring, defoam and discharge to obtain a mild exfoliating scrub containing plant cellulose particles and essential oil.

[0135] Test Example 1

[0136] Select 20 healthy volunteers, male and female, aged 18-45 years, with no obvious skin lesions and skin disease history on the forearm skin. 24 hours before the test, other exfoliating products and external use drugs are prohibited. The scrub paste obtained in Examples 1-9 is respectively recorded as samples 1-9. In each subject, 9 non-overlapping test areas are marked on the flexor side of the double forearms, each area is about 16 cm 2 , and the samples 1-9 are corresponded by using random coding method to ensure single-blind of the subjects. About 0.5 g of the corresponding sample is taken each time and evenly applied to the designated test area. Circle and massage according to the unified operation specification, massage time is 1 min, and after 1 min, wash clean with warm water and dry with a paper towel. The operation is completed by the same trained operator to reduce human differences.

[0137] The subjects make subjective scores on each test area immediately after treatment (0 min) and 30 min, respectively. The scoring items include:

[0138] Scratch feeling: 0 points, none; 1 point, slight; 2 points, moderate; 3 points, obvious; 4 points, severe discomfort;

[0139] Burning and stinging: 0-4 points, the higher the score, the more severe the irritation;

[0140] Overall comfort: 0 points, very comfortable; 1 point, relatively comfortable; 2 points, general; 3 points, slightly uncomfortable; 4 points, obviously uncomfortable.

[0141] Record the scores of each sample at each time point by each subject. The average scores of each sample at 30 min are as follows (n=20):

[0142] Table 1 Sensory evaluation of scrub paste

[0143] Scratchiness score Burning, stinging sensation Overall comfort score Example 1 3.1 2.8 3.2 Example 2 1.0 0.8 1.0 Example 3 1.4 1.1 1.3 Example 4 1.6 1.3 1.5 Example 5 2.0 1.8 2.0 Example 6 2.3 2.1 2.2 Example 7 1.8 1.5 1.8 Example 8 2.6 2.3 2.5 Example 9 0.7 0.5 0.8

[0144] Test Example 2

[0145] Twenty healthy volunteers were selected, with inclusion criteria the same as in Test Case 1. The experiment was conducted in a constant temperature and humidity environment (temperature 22±2℃, relative humidity 50%±10%), and the subjects were allowed to remain seated and balanced for at least 20 minutes before the test began.

[0146] Nine test areas were marked on the flexor surfaces of both forearms of each subject, corresponding to samples 1-9. Baseline transepidermal water loss (TEWL, g / m²·h) was measured in each area using a TEWL meter.

[0147] Then, following the procedure in Test Example 1, the corresponding samples were applied to each area. After treatment, the areas were rinsed with warm water and gently dried. The TEWL value was measured again 2 hours after treatment.

[0148] TEWL value change rate = (TEWL value after product use - TEWL value before use) / TEWL value before use × 100%;

[0149] The average TEWL change rate for each sample 2 hours after treatment is as follows:

[0150] Table 2 Results of transdermal water loss test

[0151] TEWL value change rate / % Example 1 -2.0 Example 2 -7.2 Example 3 -6.5 Example 4 -5.8 Example 5 -4.2 Example 6 -3.5 Example 7 -5.0 Example 8 -2.8 Example 9 -8.0

[0152] Example 1 uses walnut shell particles directly. The subjective scores for scratching sensation, burning sensation, stinging sensation and overall comfort are the highest among all samples, reflecting that the hard particles have a greater instantaneous mechanical stimulation to the skin.

[0153] Example 2: Introducing sodium γ-polyglutamate and sodium hyaluronate onto the surface of walnut shell particles and then... 2+ Cross-linking occurs under the action of [a specific agent / component], introducing silk fibroin hydrolysate and ecdysin, which essentially form a flexible, water-rich, and somewhat lubricating hydrogel coating layer outside the hard core. During exfoliation, the flexible coating layer is the first to contact the skin, with the walnut shell kernel embedded in the gel. The contact pressure and shear force are dispersed and buffered by the hydrogel and protein or small molecule layer. In Example 2, the scores for scratching, burning, and stinging sensations were lower, and the overall comfort was relatively better. The TEWL value decreased significantly compared to before use, with a large absolute value of change, indicating a more significant reduction in transdermal water loss. The coating layer reduced the hard-on-hard contact between the hard core and the stratum corneum, reducing the occurrence of microcracks and microdefects, thereby reducing passive water loss and inflammatory response in a chain reaction.

[0154] The performance of Example 2 is better than that of Examples 3-4, and the possible reason is that the introduction of silk fibroin hydrolysate and ecolomide in Example 2 not only improves the flexibility and lubricity of the coating layer, but also adjusts the osmotic pressure and hydration state of the microenvironment through ecolomide, so that the coating layer is not prone to local dehydration or brittle fracture under mechanical stress; at the same time, the silk fibroin hydrolysate improves the slip interface between the particles and the skin, reducing local high shear points. Therefore, under the same scrubbing intensity, Example 2 is better than Examples 3-4 in both subjective comfort and objective barrier indicators.

[0155] Example 5 only relies on the physical adsorption and partial winding of γ-polyglutamic acid sodium, sodium hyaluronate and additives on the surface of the particles to form a coating. This coating layer is a non-crosslinked, weakly attached polymer film that is prone to migration or local shedding when subjected to shear or rinsing, making it difficult to stably cover the particle surface for a long time. This results in the effect of Example 2 being better than that of Example 5.

[0156] Example 6 reduces the amount of γ-polyglutamic acid sodium and sodium hyaluronate. On the same particle surface area, the polymer layer becomes thinner or even presents a partially coated and partially exposed state. According to the test results in Tables 1-2, insufficient polymer dosage leads to a coating layer that exists macroscopically but is difficult to achieve full coverage and sufficient thickness for each particle microscopically. Local hard points still have the opportunity to directly act on the stratum corneum, and the overall buffering capacity decreases.

[0157] Example 7 retains the crosslinking conditions of γ-polyglutamic acid sodium, sodium hyaluronate and Ca 2+ , but does not add silk fibroin hydrolysate and ecolomide. The coating layer is mainly formed by anionic polymers and Ca 2+ , which has a certain elasticity and hydrophilicity in structure, but the interface lubricity, film forming flexibility and local microenvironment adjustment ability are weaker than Example 2.

[0158] Example 8 improves the molar ratio of Ca 2+ to carboxyl, resulting in a significant increase in the crosslinking point density in the coating layer. High crosslinking density makes the hydrogel network tend to be tight, the water content decreases, and the elastic modulus increases, resulting in a harder and more brittle shell.

[0159] In Example 9, potassium aluminum sulfate is used instead of calcium chloride. The trivalent aluminum ions released by potassium aluminum sulfate have stronger crosslinking ability than the divalent Ca 2+ , and can form a more dense and stable hydrogel network with γ-polyglutamic acid sodium and sodium hyaluronate, making the plant cellulose particle surface coating layer thicker and smoother, and reducing the mechanical friction on the stratum corneum; at the same time, alum has astringent and soothing effect, which can reduce the stinging sensation, so it is more conducive to improving the mildness and skin feel of the exfoliating scrub in the same dosage.

[0160] The preferred embodiments of the present application have been described above in detail. It should be understood that modifications and variations to the present application can be affected by those skilled in the art without departing from the scope of the application. Accordingly, it is intended that all possible modifications and alterations be included within the scope of the present application as defined by the following claims.

Claims

1. A gentle exfoliating scrub containing plant cellulose particles and essential oils, characterized in that: The raw materials include the following phases: A phase, B phase, C phase, and D phase. Phase B comprises 16 / 18 alcohol, 26# white oil, monoglyceride, and 75A; The C phase includes QS305, lemon yellow, and brilliant blue; The D phase includes plant cellulose particles or encapsulated plant cellulose particles, peppermint oil, chlorphenesin, and phenoxyethanol; Phase A is water.

2. The gentle exfoliating scrub containing plant cellulose particles and essential oils as described in claim 1, characterized in that: It includes the following raw materials: 0.8-2wt% 16 / 18 alcohol, 1-2wt% 26# white oil, 0.3-1wt% monoglyceride, 0.3-0.8wt% 75A, 0.5-1wt% QS305, 0.01-0.03wt% lemon yellow, 0.003-0.02wt% brilliant blue, 0.3-1wt% plant cellulose granules or encapsulated plant cellulose granules, 0.1-0.4wt% peppermint oil, 0.05-0.2wt% chlorphenesin, 0.2-0.6wt% phenoxyethanol, and the balance being water.

3. The gentle exfoliating scrub containing plant cellulose particles and essential oils as described in claim 1 or 2, characterized in that: The 75A is a mixture of glyceryl stearate, PEG-40 dehydrated sorbitan stearate, and cetyl phosphate potassium.

4. The gentle exfoliating scrub containing plant cellulose particles and essential oils as described in claim 1 or 2, characterized in that: The QS305 is a mixture of polyacrylamide, C13-14 isoparaffins, and lauryl alcohol polyether-7.

5. The gentle exfoliating scrub containing plant cellulose particles and essential oils as described in claim 1, characterized in that: The plant cellulose particles are walnut shell particles; the walnut shell particles are obtained by washing, drying, crushing and sieving walnut shells as raw materials, with an average particle size of 150-500µm.

6. The gentle exfoliating scrub containing plant cellulose particles and essential oils as described in claim 2, characterized in that: The method for preparing the encapsulated plant cellulose particles includes the following steps: S1. Add sodium γ-polyglutamate and sodium hyaluronate to water and stir to obtain a mixed solution; add additives to the above mixed solution and continue stirring to adjust the pH to obtain a composite solution; S2. Add the plant cellulose particles to the above composite solution and mix evenly. Then, add the metal salt aqueous solution while stirring and continue stirring. After the mixture is finished, filter to collect the precipitate, wash and dry it to obtain the coated plant cellulose particles.

7. A method for preparing a mild exfoliating scrub containing plant cellulose particles and essential oils as described in any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Heat phase A raw material to 45-50℃, add phase B raw material, and stir at a stirring speed of 100-300r / min until the mixture is uniform. Step 2: Continue heating the mixture of phases A and B to 80-90℃, and homogenize it twice at a stirring rate of 300-800r / min, each time for 1-10min, with an interval of 10-20min between the two homogenizations. Then maintain the temperature at 80-90℃ and continue emulsification for 60-90 minutes at a stirring rate of 300-800 r / min. Step 3: When the system is cooled to 70-80℃, add the C phase raw material, homogenize once at a stirring speed of 300-800 r / min for 5 min, and then continue stirring at a stirring speed of 100-300 r / min for 10-30 min. Step 4: Continue cooling. When the temperature drops to 40-50℃, add the D phase raw material as needed and stir for 10-30 minutes at a stirring speed of 100-300 r / min. After stirring, degas and discharge the material to obtain a mild exfoliating scrub containing plant cellulose particles and essential oils.