CN112245321A

CN112245321A - Foundation make-up with small color difference and preparation method thereof

Info

Publication number: CN112245321A
Application number: CN202011217392.9A
Authority: CN
Inventors: 刘山; 肖雄; 江玉林; 徐晓庆; 杨明好; 尹全尹
Original assignee: Yachun Guangzhou Biotechnology Co ltd
Current assignee: Yachun Guangzhou Biotechnology Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-01-22
Anticipated expiration: 2040-11-04
Also published as: CN112245321B

Abstract

The invention relates to the field of cosmetics, in particular to a foundation with small chromatic aberration and a preparation method thereof. The foundation with small color difference comprises the following raw materials in percentage by weight: phase A: 0.2-1% of disteardimonium hectorite, 0.5-2% of caprylic/capric triglyceride and 2-5% of ethylhexyl palmitate; phase B: 3-7% of first cyclomethicone, 6-10% of titanium dioxide, 0.2-1.5% of iron oxide yellow, 0.1-1% of iron oxide red, 0.1-3% of iron oxide black and 0.4-0.6% of sorbitan sesquioleate; and C phase: 10-20% of second cyclopolydimethylsiloxane; phase D: 1-4.5% of polymethylsiloxane, 0.05-0.13% of tocopherol acetate, 1.6-2.4% of zinc oxide and 0.25-0.35% of mica; phase E: 7-10.2% of straight-chain alcohol with 3-7 carbon atoms, 0.01-0.05% of thickening agent, 0.6-1% of sodium chloride, 0.2-0.8% of p-hydroxyacetophenone and the balance of water; and (3) phase F: 0.06-0.26% of essence. The foundation prepared by the invention has little color difference, can stably exist for a long time under the conditions of high temperature and low temperature, has no stimulation to skin, and has wide application prospect.

Description

Foundation make-up with small color difference and preparation method thereof

Technical Field

The invention relates to the field of cosmetics, in particular to a foundation with small chromatic aberration and a preparation method thereof.

Background

With the improvement of the quality of life of people, cosmetics are more and more popular in the life of modern people, wherein the color cosmetics can not only impart color to skin but also cover skin defects due to the characteristic of color change, and are more and more favored by general consumers in recent years. The face makeup is one of the most important roles in the makeup market, and researches show that the makeup market in the face makeup is developed more rapidly, and the market scale of the makeup is steadily increasing along with the growth of the makeup market. The base makeup is broadly defined as products including foundation liquid, foundation cream, concealer, face cream, and the like. Among them, foundation can be regarded as the most basic product in the base makeup products, and other base makeup products can be regarded as foundation derived products.

With the increasing demand of market consumers, at present, the way of handling toner in the field of color cosmetics has not only been satisfied with the change of a certain property alone, but also the foundation product combines beauty and skin care into a multifunctional product, such as modifying the color of skin, imparting gloss, elasticity, transparency to skin, covering wrinkles and freckles, sweat stains, preventing dryness of skin, protecting against ultraviolet radiation and other external stimuli, and protecting and conditioning skin. With the increasing development of the color cosmetic market, the toner with the optimal processing mode is selected according to different product development requirements and different formula systems, and the method has important significance for the development of products.

The foundation products sold in the market at present are generally added with titanium dioxide and iron oxide pigments to achieve the effects of regulating skin color and covering skin flaws. However, the density of pigments and other materials in foundation products tends to have a large difference, resulting in a limitation in the stability of emulsion systems. Aiming at the defect, a thickening emulsifier is often added into a foundation emulsion system to achieve the effect of keeping foundation liquid stable for a long time, but the foundation is sticky and not easy to spread and push, so that the use experience is influenced.

Based on the above, preparing a foundation which has the toning function, stability and sensory experience of the foundation is an urgent problem to be solved in the field.

Disclosure of Invention

According to the foundation with small chromatic aberration, the problem that common pigments in the foundation are poor in dispersibility in emulsion and further the stability of foundation emulsion is reduced is solved, the LAB value of the prepared foundation is very close to the PANTONE Skintone color card standard result, the chromatic aberration of the foundation is extremely small, and the foundation can exist stably for a long time under the conditions of high temperature and low temperature; and has no stimulation to skin, and has wide application prospect.

The invention provides a foundation with small color difference, which comprises the following raw materials in percentage by weight:

phase A: 0.2-1% of disteardimonium hectorite, 0.5-2% of caprylic/capric triglyceride and 2-5% of ethylhexyl palmitate;

phase B: 3-7% of first cyclomethicone, 6-10% of titanium dioxide, 0.2-1.5% of iron oxide yellow, 0.1-1% of iron oxide red, 0.1-3% of iron oxide black and 0.4-0.6% of sorbitan sesquioleate;

and C phase: 10-20% of second cyclopolydimethylsiloxane;

phase D: 1-4.5% of polymethylsiloxane, 0.05-0.13% of tocopherol acetate, 1.6-2.4% of zinc oxide and 0.25-0.35% of mica;

phase E: 7-10.2% of straight-chain alcohol with 3-7 carbon atoms, 0.01-0.05% of thickening agent, 0.6-1% of sodium chloride, 0.2-0.8% of p-hydroxyacetophenone and the balance of water;

and (3) phase F: 0.06-0.26% of essence.

Wherein, the sum of the weight percentages of the phase A, the phase B, the phase C, the phase D, the phase E and the phase F is 100 percent.

In a preferred embodiment, the starting material for phase a comprises: 0.4-0.8% of disteardimonium hectorite, 1-1.7% of caprylic/capric triglyceride and 3.2-4.4% of ethylhexyl palmitate.

In a preferred embodiment, the polymethylsiloxane is lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane and/or lauryl PEG-10 tris (trimethylsiloxy) silylethyl polymethylsiloxane.

In a preferred embodiment, the zinc oxide is zinc oxide treated with a first oxysilane.

In a preferred embodiment, the mica is mica treated with a second oxysilane.

In a preferred embodiment, the first and second oxysilanes are each triethoxycaprylylsilane.

In a preferred embodiment, the linear alcohol having 3 to 7 carbon atoms in the E phase includes at least one of glycerol, 1, 2-butanediol, 1, 4-butanediol, and 1, 2-hexanediol.

In a preferred embodiment, the first cyclomethicone and the second cyclomethicone are each selected from at least one of cyclopentadimethicone, cyclotetrasilyl, and cyclotrisilyl.

In a preferred embodiment, the thickener is at least one of starch, gelatin, sodium alginate, casein, guar gum, chitosan, gum arabic, xanthan gum, soy protein gum, natural rubber, agar, and sodium carboxymethylcellulose.

The invention provides a preparation method of foundation with small chromatic aberration, which comprises the following specific steps:

s1, weighing the listed raw materials according to formula amount respectively according to phases, dispersing and stirring the raw material of the phase A to be in a slurry state, dispersing the mixed phase B and the phase A uniformly by using a ball mill, mixing and stirring the processed phase A and the processed phase B uniformly with the processed phase C and the processed phase D, and heating to 70-85 ℃ to obtain an oil phase; synchronously heating and stirring the phase E to 75-85 ℃ to obtain a water phase;

s2, continuously stirring the oil phase obtained in the step S1, slowly adding the water phase obtained in the step S1, continuously stirring at a first rotating speed for 2-5 minutes after the water phase is added, homogenizing at a speed of 3000-5000r/min, continuously stirring at a second rotating speed for cooling, adding the phase F at the temperature of 35-45 ℃, stirring and cooling to 20-30 ℃ to obtain the foundation with small color difference.

In a preferred embodiment, the first rotation speed is 200-.

In a preferred embodiment, the homogenization time is 3 to 7 minutes.

Has the advantages that:

according to the foundation with small chromatic aberration, the problem that common pigments in the foundation are poor in dispersibility in emulsion and further the stability of foundation emulsion is reduced is solved, the LAB value of the prepared foundation is very close to the PANTONE Skintone color card standard result, the chromatic aberration of the foundation is extremely small, and the foundation can exist stably for a long time under the conditions of high temperature and low temperature; and the skin-friendly sense organ has no stimulation to the skin, excellent sensory experience and wide application prospect.

Detailed Description

The invention will be further understood by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. To the extent that a definition of a particular term disclosed in the prior art is inconsistent with any definitions provided herein, the definition of the term provided herein controls.

As used herein, a feature that does not define a singular or plural form is also intended to include a plural form of the feature unless the context clearly indicates otherwise. It will be further understood that the term "prepared from …," as used herein, is synonymous with "comprising," including, "comprising," "having," "including," and/or "containing," when used in this specification means that the recited composition, step, method, article, or device is present, but does not preclude the presence or addition of one or more other compositions, steps, methods, articles, or devices. Furthermore, the use of "preferred," "preferably," "more preferred," etc., when describing embodiments of the present application, is meant to refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. In addition, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention. In addition, the starting materials for the present invention are commercially available unless otherwise specified.

In order to solve the above problems, a first aspect of the present invention provides a foundation having a small color difference, which comprises the following raw materials by weight:

and C phase: 10-20% of second cyclopolydimethylsiloxane;

and (3) phase F: 0.06-0.26% of essence.

In some preferred embodiments, the present inventors have discovered that when the combination of disteardimonium hectorite, caprylic/capric triglyceride and ethylhexyl palmitate is added to phase A, the LAB value of the formulated foundation closely matches the PANTONE Skintone color chart standard results with minimal color variation of the foundation. The problem of accumulation of foundation make-up hard lumps caused by sinking of inorganic particles and auxiliaries in a system is solved, the distribution uniformity of the foundation make-up paste is improved, and the color difference of the prepared foundation is reduced.

Further preferably, the phase a raw materials include: 0.4-0.8% of disteardimonium hectorite, 1-1.7% of caprylic/capric triglyceride and 3.2-4.4% of ethylhexyl palmitate.

The invention unexpectedly discovers that when 0.4-0.8% of disteardimonium hectorite, 1-1.7% of caprylic/capric triglyceride and 3.2-4.4% of ethylhexyl palmitate are added into a system, the system has good dispersion and suspension effects on the color powder, the prepared material has good affinity with the skin due to the synergistic effect of 1-1.7% of caprylic/capric triglyceride and 3.2-4.4% of ethylhexyl palmitate, zinc oxide, pigment and the like, and the foundation has strong adhesive force when staying on the skin, so that the foundation forms an effective 'barrier' on the surface of the skin, the phenomenon of powder floating of foundation liquid is further solved, and the skin color is more uniform.

In some preferred embodiments, the polymethylsiloxane is lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane and/or lauryl PEG-10 tris (trimethylsiloxy) silylethyl polymethylsiloxane.

Further preferably, the polymethylsiloxanes are lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane and lauryl PEG-10 tris (trimethylsiloxy) silylethyl polymethylsiloxane. The weight ratio of lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane to lauryl PEG-10 tris (trimethylsiloxy) silylethyl polydimethylsiloxane is 1: (1-3).

Still more preferably, the disteardimonium hectorite, the second ring polydimethylsiloxane, the lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane and the lauryl PEG-10 tris (trimethylsiloxy) silylethyl methicone are added in a weight ratio of (0.4-0.8): (12-18): (0.8-1.2): (1.5-2.4).

The present inventors have unexpectedly discovered that when disteardimonium hectorite, a second ring of dimethicone, lauryl PEG-9 dimethiconoethyl dimethicone and lauryl PEG-10 tris (trimethylsiloxy) silicon ethyl methicone are added in a weight ratio of (0.4 to 0.8): (12-18): (0.8-1.2): (1.5-2.4), the stability in the heat and cold resistance test of the prepared foundation in the stability test is kept stable. Presumably, the reason for this is that disteardimonium hectorite, second ring polydimethylsiloxane, lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane and lauryl PEG-10 tris (trimethylsiloxy) silylethyl methicone were added in the weight ratio of (0.4-0.8): (12-18): (0.8-1.2): (1.5-2.4), the lamellar inorganic structure in the system optimizes the dispersion degree of solute in the system to the maximum extent, and inhibits the entanglement and agglomeration of polymer molecular chains, thereby improving the molecular stability of foundation material and widening the application temperature range of foundation solution.

In some preferred embodiments, the zinc oxide is zinc oxide treated with a first oxysilane.

In some preferred embodiments, the mica is mica treated with a second oxysilane.

It was found that the color difference of the foundation was effectively reduced when zinc oxide and mica in the C phase were subjected to oxysilane treatment. The reason is probably that the addition of the oxysilane in the system establishes a bridge between inorganic materials such as zinc oxide, mica, lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane, lauryl PEG-10 tris (trimethylsiloxy) silicon ethyl polymethylsiloxane and the like, so that the problem of uneven foundation caused by poor compatibility of the zinc oxide and the mica when oil phase and water phase are mixed is solved, the color difference of the foundation is further reduced, and the LAB value of the foundation prepared by the preparation is very close to the standard result of the PANTONE Skintone color card.

The mica treated with the second oxysilane can be commercially available, for example, from Cincha chemical Co., Ltd, Guangzhou.

The zinc oxide treated with the first oxysilane may be commercially available, for example, from SUNJIN, Korea, under the trade name ZnO-NAS.

Further preferably, the first oxysilane and the second oxysilane are each triethoxycaprylylsilane.

The present inventors have unexpectedly discovered that when the oxysilane is triethoxycaprylylsilane, not only is the color difference of the foundation reduced, but also the compatibility of the powder in the formulation is improved. The introduction of triethoxyoctylsilane is guessed to improve the compatibility of all components in the foundation solution, so that the problems of floating powder, powder precipitation, powder banding and the like are inhibited, and the color difference of foundation is improved.

In some preferred embodiments, the linear alcohol having 3 to 7 carbon atoms in the E phase includes at least one of glycerol, 1, 2-butanediol, 1, 4-butanediol, and 1, 2-hexanediol.

In some preferred embodiments, the first cyclomethicone and the second cyclomethicone are each selected from at least one of cyclopentadimethicone, cyclotetrasilyl, and cyclotrisilyl.

Further preferably, the first cyclic polydimethylsiloxane and the second cyclic polydimethylsiloxane are both cyclopentadecyldimethylsiloxanes.

In some preferred embodiments, the amount of p-hydroxyacetophenone added is 0.3 to 0.6%.

The present invention has found that when 0.3-0.6% of p-hydroxyacetophenone is added to the foundation base material, the irritation of the formulated foundation is reduced. The reason is probably that p-hydroxyacetophenone contains a rigid aromatic ring structure, so that the movement and rotation of polymer molecular chains in a system are hindered, and further higher temperature is needed to change the state of the system, so that the temperature resistance of the liquid foundation is improved. The invention unexpectedly discovers that when the mass percent of p-hydroxyacetophenone is 0.4%, the heat resistance of the foundation can be considered, and the skin irritation of the prepared foundation can be reduced, and supposedly, 0.4% of p-hydroxyacetophenone has better compatibility with substances such as glycerin, 1, 2-hexanediol, cyclopenta dimethyl siloxane and the like in a system, so that the nonuniformity of C-O-H structure electron clouds of the p-hydroxyacetophenone is relieved, the protein denaturation and inactivation caused by the contact of the p-hydroxyacetophenone and the skin protein are inhibited, and the skin irritation of the foundation is reduced.

In some preferred embodiments, the thickener is at least one of starch, gelatin, sodium alginate, casein, guar gum, chitosan, gum arabic, xanthan gum, soy protein gum, natural rubber, agar, sodium carboxymethylcellulose.

Further preferably, the thickener is at least one of xanthan gum, soy protein gum and sodium carboxymethyl cellulose.

Still more preferably, the thickener is xanthan gum. Xanthan gum is commercially available, for example from Feng Qing (Shanghai) Biotechnology, Inc. under CAS number 11138-66-2.

The invention selects a planetary ball mill as dispersing equipment. The ball mill mainly relies on the strong impact force and shearing force generated by the grinding media during impact and mutual rolling (or sliding) for dispersion, and has the advantages of high dispersion efficiency, high yield and the like. In some preferred embodiments, the ball milling beads in the ball mill comprise at least one of 304 stainless steel ball milling beads, zirconia ball milling beads, alumina ball milling beads, agate ball milling beads. Further preferably, the ball milling beads in the ball mill are zirconia ball milling beads. The zirconia ball grinding bead has the characteristics of high strength, high toughness, high density, good wear resistance, high temperature resistance, corrosion resistance, high rigidity, no magnetic conduction, electric insulation, thermal expansion coefficient close to that of steel and the like at normal temperature, and has the characteristics of high grinding efficiency, good fluidity, impact resistance, low wear, low use cost and the like. The zirconia is selected as the grinding medium in the system, so that larger shearing force can be generated, the grinding efficiency is improved, and the particles are more uniform and fine.

The present inventors have unexpectedly discovered that when phase B and slurried phase a are first uniformly dispersed using a ball mill and then subsequently mixed with C, D, a foundation performs better than when A, B, C, D is mixed directly. The guess is that the ball mill contains ball milling beads made of various materials such as zirconia, steel balls and agate, and the dispersing effect of the sorbitan sesquioleate on titanium dioxide, cyclopentadimethylsiloxane, ethylhexyl palmitate and other substances in the body system is improved to the maximum extent; avoided traditional three-roller machine when grinding the material, the material is subject to and will influence whole mill base's dispersion effect by the mill base uneven color paste of local dispersion that leads to of roller edge grinding limitation, thereby the problem of pigment agglomeration agglutination in the stirring process has been suppressed, thereby the dispersion stability of pigment among other looks has been promoted, further prevent the powder inter combination of dispersion, make the particle size more even meticulous, thereby the stability of making the foundation make has been improved, the LAB value of the foundation make that the allotment obtained is very close with PANTONE Skintone color card standard result, foundation make-up colour difference and skin irritation have been reduced.

In some preferred embodiments, the grinding speed of the ball mill is 560-.

In some preferred embodiments, the first rotation speed is 200-.

In some preferred embodiments, the homogenization time is 3 to 7 minutes.

Examples

Example 1.

The embodiment provides a foundation with small color difference, which comprises the following raw materials in percentage by weight:

phase A: disteardimonium hectorite 0.6%, caprylic/capric triglyceride 1.5%, ethylhexyl palmitate 4%;

phase B: 5% of cyclopentasiloxane, 10% of titanium dioxide, 0.6% of iron oxide yellow, 0.3% of iron oxide red, 0.12% of iron oxide black and 0.5% of sorbitan sesquioleate;

and C phase: 10-20% of cyclomethicone;

phase D: lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane 1%, lauryl PEG-10 tris (trimethylsiloxy) silylethyl polysiloxane 2%, tocopheryl acetate 0.1%, zinc oxide 2%, mica 0.3%;

phase E: 5% of glycerin, 3% of butanediol, 0.02% of thickening agent, 0.85% of sodium chloride, 0.5% of 1, 2-hexanediol, 0.4% of p-hydroxyacetophenone and the balance of water;

and (3) phase F: 0.1 percent of essence.

The zinc oxide is treated by a first oxysilane.

The mica is treated by the second oxygen silane.

The first and second oxysilanes are each triethoxycaprylylsilane.

The zinc oxide treated with the first oxysilane was purchased from Korea under the trade name ZnO-NAS.

The mica treated with the second oxysilane was purchased from Xinya chemical Co., Ltd, Guangzhou, model HS8306 AS.

The titanium dioxide was purchased from the company K.S Pearl, Korea, model TiO2 CR-50 AS;

the Iron Oxide Yellow was purchased from K.S Pearl, Korea, and was Iron Oxide Yellow 3 AS;

the Iron Oxide Red was purchased from K.S Pearl corporation, korea, and was Iron Oxide Red 3 AS;

the Iron Oxide Black was purchased from K.S Pearl, Korea, and is Iron Oxide Black 3 AS;

the cyclopentasiloxane was purchased from shin-Etsu chemical industries, Japan, and has a model number of KF-995;

the ethylhexyl palmitate is purchased from Croda, Inc. under the model CRODAMOL OP;

the cyclic polydimethylsiloxane was purchased from Dow Corning, USA, and has the model DC-345;

the lauryl PEG-10 tris (trimethylsiloxy) silylethyl methicone is available from Dow Corning, USA under model number ES-5300;

the lauryl PEG-9 dimethiconoethyl dimethicone was purchased from shin-Etsu chemical industries, Japan, and is designated KF-6038.

The essence is rosemary essence which is purchased from Wuhan La Na pharmaceutical chemical Co., Ltd, and the model is DA 104593.

The thickener is xanthan gum which is purchased from Fengqing (Shanghai) biotechnology limited and has the CAS number of 11138-66-2.

The foundation with small color difference is prepared by the specific steps of:

s1, weighing the listed raw materials according to formula amount respectively according to phases, dispersing and stirring the raw material of the phase A to be in a slurry state, dispersing the mixed phase B and the phase A uniformly by using a ball mill, mixing and stirring the processed phase A and the processed phase B uniformly with the processed phase C and the processed phase D, and heating to 75 +/-2 ℃ to obtain an oil phase; synchronously heating and stirring the phase E to 78 +/-2 ℃ to obtain a water phase;

s2, continuously stirring the oil phase prepared in the step S1, slowly adding the water phase prepared in the step S1, continuously stirring for 3 minutes at a first rotating speed after the water phase is added, homogenizing at a speed of 4000r/min, continuously stirring at a second rotating speed for cooling, adding the phase F at the temperature of 40 +/-2 ℃, stirring and cooling to 26 ℃ to obtain foundation with small color difference.

The first rotating speed is 300r/min, and the second rotating speed is 500 r/min.

The homogenization time was 5 minutes.

The ball mill in the S1 is a vertical planetary ball mill produced by Changsha Tianchu powder technology company Limited, and the model is XQM-2. The ball milling beads of the ball mill are zirconia ball milling beads, the milling speed of the ball mill is 670r/s, the milling mode is that the grinding is carried out alternately in the positive direction and the negative direction, and the ball milling time is 2.5 hours.

Example 2.

A foundation having a small color difference was prepared in the same manner as in example 1. Except that 0.4% by weight of disteardimonium hectorite was added.

Example 3.

A foundation having a small color difference was prepared in the same manner as in example 1. Except that 0.8% by weight of disteardimonium hectorite was added.

Example 4.

A foundation having a small color difference was prepared in the same manner as in example 1. Except that the amount of cyclomethicone added was 18% by weight.

Example 5.

A foundation having a small color difference was prepared in the same manner as in example 1. Except that the weight percentage of added zinc oxide was 2.4%.

Example 6.

A foundation having a small color difference was prepared in the same manner as in example 1. The difference is that the weight percentage of the p-hydroxyacetophenone is 0.8 percent.

Comparative example 1.

A foundation having a small color difference was prepared in the same manner as in example 1. Except that no disteardimonium hectorite was added.

Comparative example 2.

A foundation having a small color difference was prepared in the same manner as in example 1. Except that 2% by weight of disteardimonium hectorite was added.

Comparative example 3.

A foundation having a small color difference was prepared in the same manner as in example 1. Except that the amount of cyclomethicone added was 24% by weight.

Comparative example 4.

A foundation having a small color difference was prepared in the same manner as in example 1. Except that the zinc oxide was not treated with a peroxy silane and was purchased from bio-engineering ltd, spacious, west.

Comparative example 5.

A foundation having a small color difference was prepared in the same manner as in example 1. The difference is that the weight percentage of the p-hydroxyacetophenone is 2 percent.

Comparative example 6.

A foundation having a small color difference was prepared in the same manner as in example 1. The difference is that a three-roller grinding mill is used for replacing a ball mill; the manufacturer of the three-roller grinding machine is Wu Ching industry mechanical equipment company Limited.

Performance test method

Heat and cold resistance stability rating:

the foundation samples prepared in examples and comparative examples were divided into 2 parts in parallel, and left to stand in a closed measuring vessel at 48. + -. 1 ℃ and-15. + -. 1 ℃ for 63 days, respectively, and the shape of the foundation was observed every 24 hours during the product inspection to evaluate the stability grade.

The stability ratings were 6 ratings, 0-5 ratings, each as follows:

level 0: the product inspection process has no abnormal phenomenon.

Level 1: the product testing process showed slight consistency, color, heat resistance or alternate odor changes.

And 2, stage: slight coarseness and penetration change appear in the product inspection process.

And 3, level: the product inspection process has the phenomena of non-normal-temperature moderate change of thin consistency, color, smell and transparency, and slight breakage of foundation.

4, level: the product is checked to have obvious changes of normal temperature, such as thin consistency, color, smell, penetrability, coarseness and the like within 14 days of standing.

And 5, stage: the product is checked to have obvious phenomena of layering, demulsification, uneven color, impurity precipitation and the like within 14 days of standing.

Skin patch test:

according to the closed spot test method, 0.025g of a test object is placed in a spot tester, a low-sensitivity adhesive tape is externally applied to the back of the test object, the test object is removed after 24 hours, skin reaction is observed after 48 hours after removal, and the result is recorded according to the skin reaction grading standard in technical Specification for cosmetic safety (2015 edition).

Performance test data:

TABLE 1 results of Performance test of examples and comparative examples

	Heat resistance rating	Grade of cold resistance	Patch test
				Example 1	Level 0	Level 0	Has no irritation
Example 2	Level 0	Level 0	Has no irritation
				Example 3	Level 0	Level 0	Has no irritation
Example 4	Level 0	Level 0	Has no irritation
				Example 5	Level 0	Level 0	Has no irritation
Example 6	Level 0	Level 0	Has no irritation
				Comparative example 1	Stage 2	Level 0	Has no irritation
Comparative example 2	Level 0	Level 0	Has no irritation
				Comparative example 3	Level 1	Level 1	No thorn
Comparative example 4	Level 0	Level 0	Level 1 stimulation
				Comparative example 5	Level 1	Level 1	Level 1 stimulation
Comparative example 6	Level 1	Stage 2	Level 1 stimulation

Finally, it is pointed out that the foregoing examples are illustrative only, serving to explain some of the characteristics of the process according to the invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.

Claims

1. A foundation with small color difference is characterized by comprising the following raw materials in percentage by weight:

and C phase: 10-20% of second cyclopolydimethylsiloxane;

and (3) phase F: 0.06-0.26% of essence;

2. A foundation having a small color difference according to claim 1, wherein said a phase raw material comprises: 0.4-0.8% of disteardimonium hectorite, 1-1.7% of caprylic/capric triglyceride and 3.2-4.4% of ethylhexyl palmitate.

3. A foundation according to claim 1, wherein the polymethylsiloxane is lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane and/or lauryl PEG-10 tris (trimethylsiloxy) silylethyl polymethylsiloxane.

4. A foundation having a small color difference according to claim 1, wherein said zinc oxide is zinc oxide treated with a first oxysilane; the mica is treated by the second oxygen silane.

5. A foundation having low color variation as claimed in claim 4 wherein the first and second oxysilanes are each triethoxycaprylylsilane.

6. A foundation having a small color difference according to claim 1, wherein the linear alcohol having 3 to 7 carbon atoms in the E phase comprises at least one of glycerin, 1, 2-butanediol, 1, 4-butanediol, and 1, 2-hexanediol.

7. A low color shifting foundation according to claim 1 wherein said first cyclomethicone and said second cyclomethicone are each selected from the group consisting of at least one of cyclopentadimethicone, cyclotetrasilyl and cyclotrisilyl.

8. A foundation having a low color difference according to claim 1, wherein said thickener is at least one of starch, gelatin, sodium alginate, casein, guar gum, chitosan, gum arabic, xanthan gum, soy protein gum, natural rubber, agar, and sodium carboxymethylcellulose.

9. A method for producing a foundation having a small color difference according to any one of claims 1 to 8, which comprises the steps of:

10. The method as claimed in claim 9, wherein the first rotation speed is 200-400r/min and the second rotation speed is 400-560 r/min; the homogenization time is 3-7 minutes.