CN110934755A

CN110934755A - Preparation method of whitening and moisturizing cream containing bismuth oxychloride

Info

Publication number: CN110934755A
Application number: CN201911330464.8A
Authority: CN
Inventors: 张应贤
Original assignee: Guangzhou Lakel Stem Cell Research Institute
Current assignee: Guangzhou Lakel Stem Cell Research Institute
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-03-31

Abstract

The invention discloses a preparation method of a whitening and moisturizing cream containing bismuth oxychloride, and relates to the technical field of skin care products. Preparing raw materials: 0.5-2% of bismuth oxychloride, 0.1-0.5% of hydroxyapatite, 0.6-1.25% of ultraviolet absorbent, 1.4-4.3% of active additive, 0.01-0.05% of chelating agent, 3.2-9.4% of humectant, 6.2-17.5% of emollient, 0.7-4.8% of thickening agent, 0.5-2% of preservative and 100% of deionized water; according to the preparation method of the whitening and moisturizing cream containing bismuth oxychloride, the moisturizing agent is arranged to easily attract and retain water, so that the good moisturizing effect of the moisturizing cream is improved, the addition of the softening agent forms a good barrier for preventing the water loss of skin, so that the water of skin tissues is not easy to evaporate and lose, and the skin is also protected from being invaded by foreign matters, so that the better skin moisturizing effect is shown, meanwhile, the addition of the carnosine further enhances the antioxidation and anti-aging effects, and meanwhile, the whitening and moisturizing cream containing bismuth oxychloride has excellent anti-glycosylation effect, can protect skin collagen eggs, and further ensures the good using effect of the preparation method of the whitening and moisturizing cream containing bismuth oxychloride.

Description

Preparation method of whitening and moisturizing cream containing bismuth oxychloride

Technical Field

The invention relates to the technical field of skin care products, in particular to a preparation method of a whitening and moisturizing cream containing bismuth oxychloride.

Background

With the development of economy, the living standard of people is improved, more and more people begin to grope the traditional beauty concept of 'one white covering three ugs' on the road of getting beautiful, the pursuit of whitening by Asian women never stops just like the pursuit of brightening by human beings, the blusher powder is almost a necessary product of every adult woman, and is a general powder family of forests such as concealer, foundation make-up, loose powder, makeup powder, powder cake and the like, and the powder decoration is white and is too flat. The skin whitening process is also the process of skin renewal and cleaning, and the removal of aged stratum corneum makes the skin drier, which is easily melanogenesis, so it is necessary to supplement nutrition and moisture in time, and it can be said that moisture retention is the basic lesson for any skin.

How to realize instant whitening and shining people and enable skin to be deeply whitened and moisturized are both topics concerned by people, various whitening products and whitening methods are endless, the pursuit of pure white and flawless white and tender skin is required, the uniform and transparent skin color is required, and the emergence of an effective and safe whitening product is very significant.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a preparation method of a whitening and moisturizing cream containing bismuth oxychloride, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a whitening and moisturizing cream containing bismuth oxychloride comprises the following steps:

s1, preparing raw materials: 0.5-2% of bismuth oxychloride, 0.1-0.5% of hydroxyapatite, 0.6-1.25% of ultraviolet absorbent, 1.4-4.3% of active additive, 0.01-0.05% of chelating agent, 3.2-9.4% of humectant, 6.2-17.5% of emollient, 0.7-4.8% of thickening agent, 0.5-2% of preservative and 100% of deionized water;

s2, weighing the raw materials: weighing the required humectant, deionized water, chelating agent, thickener and deionized water according to the proportion, and adding the weighed materials into a beaker for later use;

s3, preparation of phase A: adding the raw materials in the beaker in the step S2 into an emulsifying pot, carrying out emulsifying operation, stirring and heating to 75-80 ℃, uniformly dispersing the raw materials in the emulsifying pot, and keeping the temperature for later use;

s4, preparing a B phase, namely adding the softening agent into the emulsifying pot in the step S3, stirring and heating to 75-80 ℃, adding bismuth oxychloride after uniform dispersion, and stirring uniformly again to prepare the B phase for later use;

s5, preparation of phase C: adding emulsification homogenization into the phase B in the step S4, emulsifying, uniformly stirring to obtain a phase C, and keeping the temperature for later use;

s6, preparing a D phase, namely sequentially adding hydroxyapatite, an ultraviolet protective agent and an active additive into an ultrasonic dispersion machine for dispersion to prepare the D phase for later use;

s7, preparation of moisturizing cream: cooling the phase C in the step S5 to 43-45 ℃ by stirring, sequentially adding the preservative and the phase D in the step S6, uniformly stirring, and standing to obtain the required moisturizing cream;

s8, subpackaging and warehousing: and (5) subpackaging and packaging the moisturizing cream required in the step S7, and warehousing the finished product.

Further optimizing the technical scheme, the ultraviolet absorbent comprises 0.5-1% of o-cymene-5-alcohol and 0.1-0.25% of benzotriazole group butyl phenol sodium sulfonate.

Further optimizing the technical scheme, the active additive comprises 1-2.5% of nicotinamide, 0.1-0.5% of glutathione, 0.1-0.5% of cysteine, 0.05-0.1% of pentaerythritol tetra (di-tert-butyl hydroxy hydrocinnamic acid) ester, 0.1-0.5% of acetyl chitosamine and 0.05-0.2% of carnosine.

The technical scheme is further optimized, and the humectant comprises 2-4% of glycerin, 0.02-0.05% of sodium hyaluronate, 0.1-0.3% of allantoin and 1-5% of propylene glycol.

Further optimizing the technical scheme, the softening agent comprises 1-6% of ethylhexyl palmitate, 1-3% of hydrogenated polyisobutene, 0.5-1% of petrolatum, 0.5-1% of behenyl behenate, 0.5-1.5% of buckeye difeed resin, 1-1.5% of triglyceride C10-18 fatty acid, 1-1.5% of vinyl dimethyl silicone polymer/polymethyl siloxane silsesquioxane cross-linked polymer, 0.1-0.5% of ethylhexyl hydroxystearate, 0.5-1% of lecithin and-30.01-0.1% of butanol polyether.

The technical scheme is further optimized, and the thickening agent comprises 0.1-0.3% of dextrin, 0.5-1.5% of acrylic acid (ester) copolymer sodium and 0.1-0.25% of starch octenyl aluminum succinate.

The technical scheme is further optimized, and the preservative comprises 0.3-1% of 1, 2-pentanediol, 0.1-0.5% of ethylhexyl glycerol and 0.1-0.5% of 1, 2-hexanediol.

Further optimizing the technical scheme, the chelating agent is 0.01-0.05% of EDTA disodium.

Further optimizing the technical scheme, the emulsification time in the step S5 is 3-4min, the heat preservation stirring time is 4-5min, and the heat preservation temperature is 60-70 ℃.

Further optimizing the technical scheme, in the step S6, the ultrasonic dispersion machine performs ultrasonic treatment for 10min at 20 ℃ and 300 power.

(III) advantageous effects

Compared with the prior art, the invention provides a preparation method of whitening and moisturizing cream containing bismuth oxychloride, which has the following beneficial effects:

1. the preparation method of the whitening and moisturizing cream containing bismuth oxychloride comprises the steps of adding bismuth oxychloride and hydroxyapatite to enable the skin color to be immediately whitened after being smeared, enabling the skin color to be immediately whitened by the synergistic active additive to further provide a natural protective barrier for the skin, enabling the skin to be naturally light-sensitive white, emitting bright light from inside to outside, effectively absorbing and filtering ultraviolet rays by the ultraviolet protective agent, preventing the ultraviolet rays from damaging the skin, inhibiting oxidation, simultaneously absorbing active substances to perfect internal restoration, integrating three layers of mechanisms into one, naturally whitening, protecting the skin from external stimulation from outside to inside, simultaneously carrying the active substances together from inside to outside, really and naturally brightening the skin, and lasting whitening the skin, effectively removing free radicals by the active additive, protecting cells from normal running, fading formed spots, inhibiting tyrosinase, reducing melanin generation and inhibiting melanin transfer, the skin care product has the advantages of achieving an anti-aging effect, repairing the skin by multiple principles, whitening the skin from inside to outside, presenting the white skin, attracting and keeping moisture not to be dissipated, and improving the hydration capability of the skin, thereby achieving the effect of high-efficiency moisture preservation, caring in multiple aspects, and emitting bright white light from the deep layer of the skin.

2. According to the preparation method of the whitening and moisturizing cream containing bismuth oxychloride, the moisturizing agent is arranged to easily attract and retain water, so that the good moisturizing effect of the moisturizing cream is improved, the addition of the softening agent forms a good barrier for preventing the water loss of skin, so that the water of skin tissues is not easy to evaporate and lose, and the skin is also protected from being invaded by foreign matters, so that the better skin moisturizing effect is shown, meanwhile, the addition of the carnosine further enhances the antioxidation and anti-aging effects, and meanwhile, the whitening and moisturizing cream containing bismuth oxychloride has excellent anti-glycosylation effect, can protect skin collagen eggs, and further ensures the good using effect of the preparation method of the whitening and moisturizing cream containing bismuth oxychloride.

Drawings

Fig. 1 is a schematic flow chart of a preparation method of a whitening and moisturizing cream containing bismuth oxychloride provided by the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows: referring to fig. 1, the invention discloses a preparation method of a whitening and moisturizing cream containing bismuth oxychloride, which comprises the following steps:

s3, preparation of phase A: adding the raw materials in the beaker in the step S2 into an emulsifying pot, carrying out emulsifying operation, stirring and heating to 75 ℃, uniformly dispersing in the emulsifying pot, and keeping the temperature for later use;

s4, preparing a B phase, namely adding the softening agent into the emulsifying pot in the step S3, stirring and heating to 75 ℃, adding bismuth oxychloride after uniform dispersion, and stirring uniformly again to prepare the B phase for later use;

s7, preparation of moisturizing cream: cooling the phase C in the step S5 to 43 ℃ by stirring, sequentially adding the preservative and the phase D in the step S6, uniformly stirring, and standing to obtain the required moisturizing cream;

As a specific optimization scheme of the embodiment, the ultraviolet absorbent comprises 0.5% of o-cymene-5-alcohol and 0.1% of sodium benzotriazolyl styrene-butadiene-phenol sulfonate.

As a specific optimization of this example, the active additives include nicotinamide 1%, glutathione 0.1%, cysteine 0.1%, pentaerythritol tetrakis (bis-tert-butyl hydroxyhydrocinnamate) 0.05%, acetyl chitosamine 0.1-0.5%, and carnosine 0.05%.

As a specific optimization scheme of this embodiment, the moisturizer includes 2% of glycerin, 0.02% of sodium hyaluronate, 0.1% of allantoin, and 1% of propylene glycol.

As a specific optimization scheme of this embodiment, the emollient includes 1% ethylhexyl palmitate, 1% hydrogenated polyisobutene, 0.5% petrolatum, 0.5% behenyl behenate, 0.5% horse maclea seed resin, 1% triglyceride C10-18 fatty acid, 1% vinyl dimethicone/methicone silsesquioxane cross-linked polymer, 0.1% ethylhexyl hydroxystearate, 0.5% lecithin, and 30.01% butyl polyether.

As a specific optimization scheme of this embodiment, the thickener comprises 0.1% of dextrin, 0.5% of sodium acrylate copolymer and 0.1% of aluminum starch octenyl succinate.

As a specific optimization scheme of the embodiment, the preservative comprises 0.3-1% of 1, 2-pentanediol, 0.1% of ethylhexyl glycerol and 0.1% of 1, 2-hexanediol.

As a specific optimization scheme of this embodiment, the chelating agent is disodium EDTA 0.01%.

As a specific optimization scheme of this embodiment, the emulsification time in step S5 is 3min, the stirring time is 4min, and the temperature is 60 ℃.

As a specific optimization scheme of this embodiment, in step S6, the ultrasonic disperser performs ultrasonic treatment at 20 ℃ and 300 power for 10 min.

Example two: referring to fig. 1, the invention discloses a preparation method of a whitening and moisturizing cream containing bismuth oxychloride, which comprises the following steps:

s3, preparation of phase A: adding the raw materials in the beaker in the step S2 into an emulsifying pot, carrying out emulsifying operation, stirring and heating to 76 ℃, uniformly dispersing the raw materials in the emulsifying pot, and keeping the temperature for later use;

s4, preparing a B phase, namely adding the softening agent into the emulsifying pot in the step S3, stirring and heating to 76 ℃, adding bismuth oxychloride after uniform dispersion, and stirring uniformly again to prepare the B phase for later use;

s7, preparation of moisturizing cream: cooling the phase C in the step S5 to 43.5 ℃ by stirring, sequentially adding the preservative and the phase D in the step S6, uniformly stirring, and standing to obtain the required moisturizing cream;

As a specific optimization scheme of the embodiment, the ultraviolet absorbent comprises 0.6% of o-cymene-5-alcohol and 0.15% of sodium benzotriazolyl styrene-butadiene-phenol sulfonate.

As a specific optimization of this example, the active additives include niacinamide 1.5%, glutathione 0.2%, cysteine 0.2%, pentaerythritol tetrakis (bis-tert-butyl hydroxyhydrocinnamate) 0.06%, acetyl chitosamine 0.2%, and carnosine 0.1%.

As a specific optimization scheme of this embodiment, the moisturizer includes 2.5% of glycerin, 0.03% of sodium hyaluronate, 0.15% of allantoin, and 2% of propylene glycol.

As a specific optimization scheme of this embodiment, the emollient includes 2% ethylhexyl palmitate, 1.5% hydrogenated polyisobutene, 0.6% petrolatum, 0.6% behenyl behenate, 0.7% buckeye bis-seed resin, 1.2% triglyceride C10-18, 1.2% cross-linked polymer of vinyl dimethicone/methicone silsesquioxane, 0.2% ethylhexyl hydroxystearate, 0.6% lecithin, and 30.02% buthanol polyether.

As a specific optimization scheme of this embodiment, the thickener comprises 0.15% of dextrin, 0.7% of sodium acrylate copolymer and 0.15% of aluminum starch octenyl succinate.

As a specific optimization scheme of the embodiment, the preservative comprises 0.5% of 1, 2-pentanediol, 0.2% of ethylhexyl glycerol and 0.2% of 1, 2-hexanediol.

As a specific optimization scheme of this embodiment, the chelating agent is disodium EDTA 0.02%.

As a specific optimization scheme of this embodiment, the emulsification time in step S5 is 3.2min, the stirring time is 4.2min, and the temperature is 62 ℃.

Example three: referring to fig. 1, the invention discloses a preparation method of a whitening and moisturizing cream containing bismuth oxychloride, which comprises the following steps:

s3, preparation of phase A: adding the raw materials in the beaker in the step S2 into an emulsifying pot, carrying out emulsifying operation, stirring and heating to 78 ℃, uniformly dispersing the raw materials in the emulsifying pot, and keeping the temperature for later use;

s4, preparing a B phase, namely adding the softening agent into the emulsifying pot in the step S3, stirring and heating to 78 ℃, adding bismuth oxychloride after uniform dispersion, and stirring uniformly again to prepare the B phase for later use;

s7, preparation of moisturizing cream: cooling the phase C in the step S5 to 44 ℃ by stirring, sequentially adding the preservative and the phase D in the step S6, uniformly stirring, and standing to obtain the required moisturizing cream;

As a specific optimization scheme of the embodiment, the ultraviolet absorbent comprises 0.5-1% of o-cymene-5-alcohol and 0.2% of sodium benzotriazolyl butylphenol sulfonate.

As a specific optimization of this example, the active additives include niacinamide 2%, glutathione 0.4%, cysteine 0.3%, pentaerythritol tetrakis (bis-tert-butyl hydroxyhydrocinnamate) 0.07%, acetyl chitosamine 0.3%, and carnosine 0.15%.

As a specific optimization scheme of this embodiment, the moisturizer includes 3% of glycerin, 0.04% of sodium hyaluronate, 0.2% of allantoin, and 3% of propylene glycol.

As a specific optimization scheme of this embodiment, the emollient includes ethylhexyl palmitate 4%, hydrogenated polyisobutene 2%, petrolatum 0.7%, behenyl behenate 0.8%, buckeye difenoconazole 0.8%, triglyceride C10-18, vinyl dimethicone/methicone silsesquioxane crosspolymer 1.3%, ethylhexyl hydroxystearate 0.3%, lecithin 0.7%, and buthanol polyether-30.05%.

As a specific optimization scheme of this embodiment, the thickener comprises 0.2% of dextrin, 0.9% of sodium acrylate copolymer and 0.2% of aluminum starch octenyl succinate.

As a specific optimization scheme of the embodiment, the preservative comprises 0.7% of 1, 2-pentanediol, 0.4% of ethylhexyl glycerol and 0.3% of 1, 2-hexanediol.

As a specific optimization scheme of this embodiment, the chelating agent is disodium EDTA 0.04%.

As a specific optimization scheme of this embodiment, the emulsification time in step S5 is 3.5min, the stirring time is 4.5min, and the holding temperature is 65 ℃.

Example four: referring to fig. 1, the invention discloses a preparation method of a whitening and moisturizing cream containing bismuth oxychloride, which comprises the following steps:

s3, preparation of phase A: adding the raw materials in the beaker in the step S2 into an emulsifying pot, carrying out emulsifying operation, stirring and heating to 80 ℃, uniformly dispersing in the emulsifying pot, and keeping the temperature for later use;

s4, preparing a B phase, namely adding the softening agent into the emulsifying pot in the step S3, stirring and heating to 80 ℃, adding bismuth oxychloride after uniform dispersion, and stirring uniformly again to prepare the B phase for later use;

s7, preparation of moisturizing cream: cooling the phase C in the step S5 to 45 ℃ by stirring, sequentially adding the preservative and the phase D in the step S6, uniformly stirring, and standing to obtain the required moisturizing cream;

As a specific optimization scheme of the embodiment, the ultraviolet absorbent comprises 1% of o-cymene-5-alcohol and 0.25% of sodium benzotriazolyl butylphenol sulfonate.

As a specific optimization of this example, the active additives include niacinamide 2.5%, glutathione 0.5%, cysteine 0.5%, pentaerythritol tetrakis (bis-tert-butyl hydroxyhydrocinnamate) 0.1%, acetyl chitosamine 0.5%, and carnosine 0.2%.

As a specific optimization scheme of this embodiment, the moisturizer includes 4% of glycerin, 0.05% of sodium hyaluronate, 0.3% of allantoin, and 5% of propylene glycol.

As a specific optimization scheme of this embodiment, the emollient includes 6% ethylhexyl palmitate, 3% hydrogenated polyisobutene, 1% petrolatum, 1% behenyl behenate, 1.5% buckeye bis-seed resin, 1.5% triglyceride of C10-18 fatty acid, 1.5% cross-linked polymer of vinyl polydimethylsiloxane/polymethylsiloxane silsesquioxane, 0.5% ethylhexyl hydroxystearate, 1% lecithin, and 30.1% butyl polyether.

As a specific optimization scheme of this embodiment, the thickener comprises 0.3% of dextrin, 1.5% of sodium acrylate copolymer and 0.25% of aluminum starch octenyl succinate.

As a specific optimization scheme of the embodiment, the preservative comprises 1, 2-pentanediol, 0.5% of ethylhexylglycerin and 0.5% of 1, 2-hexanediol.

As a specific optimization scheme of this embodiment, the chelating agent is disodium EDTA 0.05%.

As a specific optimization scheme of this embodiment, the emulsification time in step S5 is 4min, the stirring time is 5min, and the temperature is 70 ℃.

Experimental example: moisturizing efficacy verification instrument: medical epidermis moisture content measuring apparatu of mosisturemeter Epi D.

Measuring the moisture content of the epidermis

20 subjects were selected for each group, and the moisture content of the facial skin before application, after 1 minute, after 5 minutes and after 30 days of use was measured at 22 ℃. + -. 1 ℃ and humidity of 50%. + -. 5%, and 3 times of data were measured before and after the same test site, respectively, and the average value was taken for comparative evaluation.

Table 1: moisture content of surface layer of each experimental group

	Before smearing	After 1 minute	After 5 minutes	After 30 days
					Example 1	32.4	68.3	63.8	66.2
Example 2	33.0	60.5	58.4	63.3
					Example 3	32.3	63.1	59.5	62.9
Example 4	32.8	65.3	57.4	59.8
					Comparative example 1	33.5	45.6	36.5	40.3
Comparative example 2	32.7	46.3	39.2	43.3
					Comparative example 3	32.9	39.2	32.6	40.2
Control group	33.3	45.5	35.3	40.6

Skin whitening efficacy verification

Selecting 20 subjects in each group, testing the melanin content of a certain area of the forearm at the temperature of 22 +/-1 ℃ and the humidity of 50 +/-5%, using the test solution 2 times a day for 4 weeks continuously, and detecting the whitening state of the forearm before and after using the test solution.

The instrument comprises the following steps: german CK Mexameter melanin skin detector

Table 2: melanin content in the test area of each experimental group

And (4) judging the standard: through comparison of the four embodiments, the best effect is the first embodiment, and therefore, the first embodiment is selected as the best embodiment, and the specific change of the amount also belongs to the protection scope of the technical scheme.

The invention has the beneficial effects that: the skin color is whitened immediately after being smeared by adding bismuth oxychloride and hydroxyapatite, the synergistic active additive can also provide a natural protective barrier for the skin, the skin presents natural light whiteness, and shines bright color from inside to outside, the ultraviolet protective agent can effectively absorb and filter ultraviolet rays, prevent the ultraviolet rays from damaging the skin, has the effect of inhibiting oxidation, can absorb active substances to perfect internal repair, has three-layer mechanism and multiple-effect integration, presents natural whitening, protects the skin from external stimulation from outside to inside, and simultaneously cooperates with hands from inside to outside to really naturally brighten and brighten the skin, effectively removes free radicals by the active additive, protects cells from normal running, lightens formed spots, inhibits neuraminidase, reduces melanin generation, inhibits melanin transfer, achieves the effect of resisting aging, and repairs the skin according to a multiple principle, whitening from inside to outside, presenting fair and white skin, attracting and keeping moisture not to dissipate and improving the hydration capability of the skin, thereby achieving the effect of high-efficiency moisture preservation, realizing multi-aspect care and penetrating bright white light from the deep layer of the skin; according to the preparation method of the whitening and moisturizing cream containing bismuth oxychloride, the moisturizing agent is arranged to easily attract and retain water, so that the good moisturizing effect of the moisturizing cream is improved, the addition of the softening agent forms a good barrier for preventing the water loss of skin, so that the water of skin tissues is not easy to evaporate and lose, and the skin is also protected from being invaded by foreign matters, so that the better skin moisturizing effect is shown, meanwhile, the addition of the carnosine further enhances the antioxidation and anti-aging effects, and meanwhile, the whitening and moisturizing cream containing bismuth oxychloride has excellent anti-glycosylation effect, can protect skin collagen eggs, and further ensures the good using effect of the preparation method of the whitening and moisturizing cream containing bismuth oxychloride.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A preparation method of a whitening and moisturizing cream containing bismuth oxychloride is characterized by comprising the following steps:

2. The method for preparing the whitening and moisturizing cream containing the bismuth oxychloride as claimed in claim 1, wherein the ultraviolet absorbent comprises 0.5-1% of o-cymene-5-ol and 0.1-0.25% of sodium benzotriazolyl butylphenol sulfonate.

3. The method for preparing a whitening and moisturizing cream containing bismuth oxychloride as claimed in claim 1, wherein the active additives comprise nicotinamide 1-2.5%, glutathione 0.1-0.5%, cysteine 0.1-0.5%, pentaerythritol tetrakis (bis-tert-butyl hydroxyhydrocinnamate) 0.05-0.1%, acetyl chitosamine 0.1-0.5% and carnosine 0.05-0.2%.

4. The method for preparing a whitening and moisturizing cream containing bismuth oxychloride as claimed in claim 1, wherein the moisturizing agent comprises 2-4% of glycerin, 0.02-0.05% of sodium hyaluronate, 0.1-0.3% of allantoin and 1-5% of propylene glycol.

5. The method for preparing the whitening and moisturizing cream containing bismuth oxychloride as claimed in claim 1, wherein the emollient comprises 1-6% of ethylhexyl palmitate, 1-3% of hydrogenated polyisobutene, 0.5-1% of petrolatum, 0.5-1% of behenyl behenate, 0.5-1.5% of buckeye double seed resin, 1-1.5% of triglyceride C10-18 fatty acid, 1-1.5% of vinyl dimethyl siloxane/polymethyl siloxane silsesquioxane cross-linked polymer, 0.1-0.5% of ethylhexyl hydroxystearate, 0.5-1% of lecithin and 30.01-0.1% of buthanol polyether.

6. The method for preparing the whitening and moisturizing cream containing the bismuth oxychloride as claimed in claim 1, wherein the thickener comprises 0.1-0.3% of dextrin, 0.5-1.5% of sodium acrylate copolymer and 0.1-0.25% of aluminum starch octenyl succinate.

7. The method for preparing a whitening and moisturizing cream containing bismuth oxychloride as claimed in claim 1, wherein the preservative comprises 0.3-1% of 1, 2-pentanediol, 0.1-0.5% of ethylhexylglycerin and 0.1-0.5% of 1, 2-hexanediol.

8. The method for preparing the whitening and moisturizing cream containing bismuth oxychloride as claimed in claim 1, wherein the chelating agent is disodium EDTA 0.01-0.05%.

9. The method for preparing the whitening and moisturizing cream containing bismuth oxychloride according to claim 1, wherein the emulsifying time in the step S5 is 3-4min, the stirring time is 4-5min, and the temperature is 60-70 ℃.

10. The method for preparing a whitening and moisturizing cream containing bismuth oxychloride as claimed in claim 1, wherein the ultrasonic dispersion machine performs ultrasonic treatment at 20 ℃ and 300 power for 10min in step S6.