CN107648056B

CN107648056B - Sunscreen cream and preparation method thereof

Info

Publication number: CN107648056B
Application number: CN201710889981.3A
Authority: CN
Inventors: 许锐林; 孟潇; 陈庆生; 龚盛昭; 胡兴国
Original assignee: Guangzhou Huanya Cosmetic Science and Technology Co Ltd
Current assignee: Guangzhou Huanya Cosmetic Science and Technology Co Ltd
Priority date: 2017-09-27
Filing date: 2017-09-27
Publication date: 2022-05-17
Anticipated expiration: 2037-09-27
Also published as: CN107648056A

Abstract

The invention relates to the field of cosmetics, in particular to a sunscreen cream and a preparation method thereof, wherein the sunscreen cream comprises the following components in percentage by mass: 10.0-30.0% of organic sunscreen agent, 5.0-25.0% of solid grease, 5.0-25.0% of liquid grease, 0.1-2.0% of emulsifier, 3.0-14.0% of humectant and the balance of deionized water. The sunscreen cream has the appearance and texture of ice cream on the premise of ensuring the sunscreen effect, the body temperature of a human body can trigger the cream body to melt on the surface of skin in the smearing process, heat is taken away, and the water outlet effect is assisted, so that the novel cool and moist sensory experience is provided for people.

Description

Sunscreen cream and preparation method thereof

Technical Field

The invention relates to the field of cosmetics, in particular to sunscreen cream and a preparation method thereof.

Background

Under the strong irradiation of ultraviolet rays, the skin is easy to cause inflammation and burn, and even pigmented skin cancer and the like. In order to prevent skin from being sunburned and sunburned, ultraviolet rays may be blocked or absorbed by applying a sunscreen product or the like, in addition to physical blocking using sunscreen clothes.

At present, sunscreen products on the market are full of scales, but the dosage form and the sensory experience tend to be homogeneous, so that the sunscreen products are distinguished from a plurality of sunscreen products, are favored by more consumers, and are the problems that cosmetic developers need to consider and pay attention to.

In recent years, more and more cosmetics, especially high-end products, have started to turn their attention to changes in texture or sense of the products, and among them, cosmetics of food concept are receiving more attention, and products of concepts such as milk, jelly, pudding, and cocktail are gaining more acceptance and favor of consumers. In many cosmetic products, both researchers and consumers, attention to sunscreen products is focused on their efficacy, i.e., sunscreen effect, while the texture and sensory experience is ignored. Therefore, under the environment condition of cosmetics, how to develop a sunscreen product with special texture and sensory experience on the premise of ensuring the efficacy is a subject of attention and attention.

CN104146922A provides a sunscreen moisturizing composition, which is composed of the following components by weight percent: 4-6% of propylene glycol laurate/ethyl cellulose/propylene glycol isostearate, 1-2% of shea butter, 0.2-0.3% of tocopheryl acetate, 2% of ethylhexyl methoxycinnamate, 2.5% of butyl methoxydibenzoylmethane, 3-4% of isononyl isononanoate, 2% of cyclopenta dimethyl siloxane, 1% of polydimethylsiloxane, 0.3-0.4% of acrylic acid/C10-30 alkanol acrylate crosspolymer, 0.1% of xanthan gum, 0.02% of disodium EDTA, 0.02% of sodium hyaluronate, 3-4% of butanediol, 3-4% of glycerol, 3-263% of glyceryl polyether, 0.15-0.2% of aminomethyl propanol/water premix, 3% of water/butanediol/purslane extract, 0.5% of bacteriostatic agent and 2% of water/glycerol/phenoxyethanol/beta-glucan premix, the balance is filled with deionized water. The sunscreen moisturizing composition has touch feel, but does not have a water yielding effect.

CN 103655234A discloses a water-yielding type CC cream composition and application thereof, and the composition and the proportion of the raw materials are as follows: 5.0 to 25.0 percent of grease, 0.5 to 3.0 percent of emulsifier, 2.0 to 10.0 percent of powder, 0.3 to 2.0 percent of stabilizer, 5.0 to 20.0 percent of polyol and 0.05 to 0.50 percent of colloid raw material. However, the invention is CC cream and has no sunscreen effect.

CN105832574A discloses a sunscreen skin-care day cream with the characteristic of water cream and a preparation method thereof. The sun-screening skin-care day cream comprises the following raw material components in parts by weight: 5-18% of silicone oil, 2-5% of silicon elastomer, 2-4% of emulsifier, 10-18% of sun-screening agent, 15-25% of polyalcohol humectant and water with the content of more than or equal to 40%. The skin-care day cream disclosed by the invention is coated with the effect of 'water cream' by selecting a proper type and a proper proportion of the silicone oil emulsifier, but has no ice cream texture and touch melting effect.

Disclosure of Invention

Aiming at the defects and actual requirements of the prior art, the invention provides the suntan lotion and the preparation method thereof, the suntan lotion has the appearance and texture of ice cream on the premise of ensuring the suntan effect, the body temperature of a human body can trigger the suntan lotion to melt on the surface of skin in the smearing process, the heat is taken away, and the water outlet effect is assisted, so that the fresh and moist sensory experience is provided for people.

In a first aspect, the invention provides a sunscreen cream, which comprises the following components in percentage by mass:

according to the sunscreen cream, the type and the proportion of the solid grease and the type and the proportion of the emulsifier are prepared, the solid grease and the emulsifier are matched together to realize synergistic interaction, so that the prepared sunscreen cream has a good water outlet effect, ice cream texture and cool skin feeling brought by triggering melting, products with different water outlet effects are prepared through reasonable proportion on the premise of ensuring the high and low temperature stability of the cream, and the ice cream texture is matched to provide brand-new skin feeling experience for people.

Preferably, the sunscreen cream comprises the following components in percentage by mass:

preferably, the organic sunscreen agent is any one or combination of at least two of 4-methylbenzylidene camphor, butyl methoxydibenzoyl methane, ethylhexyl methoxycinnamate, bis-ethylhexyloxyphenol methoxyphenyl triazine, benzophenone-3, benzophenone-4, ethylhexyl salicylate, octocrylene, hexyl diethylaminooxybenzoate, or isoamyl p-methoxycinnamate, and the combination may be, for example, a combination of 4-methylbenzylidene camphor, butyl methoxydibenzoyl methane, ethylhexyl methoxycinnamate, bis-ethylhexyloxyphenol methoxyphenyl triazine, benzophenone-3, benzophenone-4, methyl, A combination of ethylhexyl salicylate and octocrylene, a combination of ethylhexyl salicylate, ethylhexyl methoxycinnamate, hexyl diethylaminobenzoyl benzoate and bis-ethylhexyloxyphenol methoxyphenyl triazine, a combination of isoamyl p-methoxycinnamate, octocrylene, ethylhexyl methoxycinnamate, hexyl diethylaminobenzoyl benzoate and bis-ethylhexyloxyphenol methoxyphenyl triazine or a combination of benzophenone-3, benzophenone-4, ethylhexyl salicylate, octocrylene and hexyl diethylaminooxybenzoate, preferably a combination of ethylhexyl salicylate, ethylhexyl methoxycinnamate, hexyl diethylaminobenzoyl benzoate and bis-ethylhexyloxyphenol methoxyphenyl triazine.

Preferably, the solid oil is any one or a combination of at least two of coconut oil, shea butter, hydrogenated olive oil decanol esters, ozokerite, candelilla wax, white beeswax, behenyl amine or cetostearyl alcohol, and the combination may be, for example, a combination of coconut oil and shea butter, a combination of coconut oil and hydrogenated olive oil decanol esters, a combination of coconut oil and ozokerite, a combination of coconut oil, shea butter and hydrogenated olive oil decanol esters, a combination of ozokerite, hydrogenated olive oil decanol esters, a combination of coconut oil and shea butter, a combination of shea butter, hydrogenated olive oil decanol esters and ozokerite, a combination of ozokerite, candelilla wax and white beeswax, a combination of ozokerite, white beeswax, coconut oil and behenyl amine or a combination of coconut oil, shea butter, hydrogenated olive oil decanol esters, ozokerite, candelilla wax and white beeswax, preferably a combination of ozokerite, hydrogenated olive oil decanols, coconut oil and shea butter.

Preferably, the liquid grease is any one or combination of at least two of C12-15 alcohol benzoate, octyldodecanol myristate, dioctyl carbonate, caprylic/capric triglyceride, cetyl ethylhexanoate, pentaerythritol tetraisostearate, cyclopentadimethylsiloxane, polydimethylsiloxane, octylmethicone, isododecane, undecane or tridecane or coco-caprylic/capric triglyceride, such as a combination of C12-15 alcohol benzoate, octyldodecanol myristate, dioctyl carbonate and caprylic/capric triglyceride, a combination of C12-15 alcohol benzoate and cyclopentadimethylsiloxane, a combination of octyldodecanol myristate, dioctyl carbonate, caprylic/capric triglyceride, cetyl ethylhexanoate and pentaerythritol tetraisostearate, polydimethylsiloxane, octylmethicone, a combination of isododecane and undecane or a combination of dioctyl carbonate, cetyl ethylhexanoate and cyclopentadimethicone, preferably C12-15 alcohol benzoate and cyclopentadimethicone.

Preferably, the emulsifier is any one or a combination of at least two of PEG-10 polydimethylsiloxane, lauryl PEG-9 dimethiconoethyl polydimethylsiloxane, lauryl PEG/PPG-18/18 polymethylsiloxane, bis-PEG-18 methyl ether dimethylsilane, cetyl PEG/PPG-10/1 polydimethylsiloxane, polyglyceryl-2 dipolyhydroxystearate, polyglyceryl-3 diisostearate, or PEG-30 dipolyhydroxystearate, which may be, for example, a combination of PEG-10 polydimethylsiloxane, lauryl PEG-9 dimethiconoethyl polydimethylsiloxane, and lauryl PEG/PPG-18/18 polymethylsiloxane, a combination of PEG-10 polydimethylsiloxane and lauryl PEG-9 dimethiconoethyl polydimethylsiloxane, a combination of bis-PEG-18 methyl ether dimethylsilane and cetyl PEG/PPG-10/1 dimethicone, a combination of polyglyceryl-2 dimethicone and polyglyceryl-3 diisostearate or PEG-30 dimethicone or a combination of PEG-10 dimethicone, lauryl PEG-9 dimethicone ethyl dimethicone, lauryl PEG/PPG-18/18 methicone, bis-PEG-18 methyl ether dimethylsilane and cetyl PEG/PPG-10/1 dimethicone, preferably cetyl PEG/PPG-10/1 dimethicone;

preferably, the humectant is any one or a combination of at least two of glycerol, propylene glycol, dipropylene glycol, 1, 3-butylene glycol, pentanediol, hexanediol, PPG-9 glycerol ether, or PPG-9 diglycerol ether, and the combination may be, for example, a combination of glycerol, propylene glycol, and dipropylene glycol, a combination of glycerol and 1, 3-butylene glycol, a combination of propylene glycol, dipropylene glycol, and 1, 3-butylene glycol, or a combination of pentanediol, hexanediol, PPG-9 glycerol ether, and PPG-9 diglycerol ether, preferably a combination of glycerol and 1, 3-butylene glycol.

The sunscreen cream provided by the invention contains the components, and also comprises any one or the combination of at least two of a skin conditioner, a preservative or a essence, preferably the combination of the skin conditioner, the preservative and the essence.

In a second aspect, the present invention provides a process for preparing a sunscreen cream according to the first aspect, comprising the steps of:

(1) dissolving organic sunscreen agent, solid oil, liquid oil, emulsifier and antiseptic under heating and stirring condition to obtain oil phase;

(2) uniformly dissolving deionized water and a humectant to obtain a water phase for later use;

(3) slowly adding the water phase into the oil phase under a heating state, and emulsifying;

(4) and adding the rest components in the formula into the emulsified paste, performing vacuum defoaming, and cooling to room temperature to obtain the sunscreen cream.

Preferably, the stirring temperature in step (3) is 60-100 ℃, for example, 60 ℃, 62 ℃, 64 ℃, 66 ℃, 68 ℃, 70 ℃, 72 ℃, 74 ℃, 76 ℃, 78 ℃, 80 ℃, 82 ℃, 84 ℃, 86 ℃, 88 ℃, 90 ℃, 92 ℃, 94 ℃, 96 ℃, 98 ℃ or 100 ℃, preferably 80 ℃.

Preferably, the rotation speed of the stirring is 100-300rpm, for example, 100rpm, 120rpm, 140rpm, 160rpm, 180rpm, 200rpm, 220rpm, 240rpm, 260rpm, 280rpm or 300rpm, preferably 200 rpm.

Preferably, the emulsification time in step (3) is 1-5min, such as 1min, 1.5min, 2min, 2.5min, 3min, 3.5min, 4min, 4.5min or 5min, preferably 2 min.

Preferably, the rotation speed of the emulsification is 800-.

Compared with the prior art, the invention has the following beneficial effects:

(1) the sunscreen cream provided by the invention has the appearance and texture of ice cream on the premise of ensuring the efficacy, the body temperature of a human body can trigger the cream body to melt on the surface of skin in the smearing process, the heat is taken away, the water outlet effect is up to 100%, the moisture feeling is very obvious during smearing, water drops are very easy to form and are large in amount, the sunscreen cream can be easily observed by naked eyes, and a fresh and moist brand-new sensory experience is provided for people.

(2) The preparation method of the sunscreen cream is simple and efficient, and is easy to popularize and apply in the market.

Detailed Description

To further illustrate the technical means and effects of the present invention, the following embodiments further illustrate the technical solutions of the present invention, but the present invention is not limited to the scope of the embodiments.

The examples do not show the specific techniques or conditions, according to the technical or conditions described in the literature in the field, or according to the product specifications. The reagents or apparatus used are conventional products commercially available from normal sources, not indicated by the manufacturer.

Example 1

A sunscreen cream with ice cream texture and water outlet effect comprises the following components in percentage by mass, and the formula is shown in table 1:

TABLE 1

The preparation method comprises the following steps:

(3) slowly adding the water phase into the oil phase at 80 deg.C and 200rpm, and emulsifying at 1000rpm for 2 min;

Example 2

A sunscreen cream with ice cream texture and water outlet effect comprises the following components in percentage by mass, and the formula is shown in table 2:

TABLE 2

The preparation method comprises the following steps:

(1) uniformly dissolving an organic sun-screening agent, solid grease, liquid grease, an emulsifier and a preservative under the conditions of heating and stirring to obtain an oil phase for later use;

(3) slowly adding the water phase into the oil phase at 60 deg.C and 100rpm, and emulsifying at 800rpm for 1 min;

Example 3

A sunscreen cream with ice cream texture and water outlet effect comprises the following components in percentage by mass, and the formula is shown in table 3:

TABLE 3

The preparation method comprises the following steps:

(3) slowly adding the water phase into the oil phase at 100 deg.C and 300rpm, and emulsifying at 1200rpm for 5 min;

Example 4

A sunscreen cream with ice cream texture and water outlet effect comprises the following components in percentage by mass, and the formula is shown in Table 4:

TABLE 4

The preparation method comprises the following steps:

(3) slowly adding the water phase into the oil phase at 150 deg.C and 250rpm, and emulsifying at 1100rpm for 3 min;

Example 5

A sunscreen cream with ice cream texture and water outlet effect comprises the following components in percentage by mass, and the formula is shown in Table 5:

TABLE 5

The preparation method comprises the following steps:

(3) slowly adding the water phase into the oil phase at 78 deg.C and 160rpm, and emulsifying at 850rpm for 2.5 min;

Example 6

A sunscreen cream with ice cream texture and water outlet effect comprises the following components in percentage by mass, and the formula is shown in Table 6:

TABLE 6

The preparation method comprises the following steps:

(3) slowly adding the water phase into the oil phase at 85 deg.C and 170rpm, and emulsifying at 880rpm for 3.5 min;

Example 7

A sunscreen cream with ice cream texture and water outlet effect comprises the following components in percentage by mass, and the formula is shown in Table 7:

TABLE 7

The preparation method comprises the following steps:

(3) slowly adding the water phase into the oil phase at 80 deg.C and 200rpm, stirring, and emulsifying at 1000rpm for 2 min;

Comparative example 1

The components of the emulsifier were replaced with 0.8% sorbitan stearate compared to example 7, otherwise the conditions were the same as in example 7.

Comparative example 2

Compared with example 7, the components of the emulsifier were removed and the other conditions were the same as example 7.

Comparative example 3

The emulsifier components were adjusted to 2.0% PEG-10 polydimethylsiloxane and 2.0% lauryl PEG-9 dimethiconoethyl polydimethylsiloxane as compared to example 7, with the same other conditions as in example 7.

Comparative example 4

The components of the solid oil and fat were replaced with 13.0% carnauba wax as compared with example 7, and the other conditions were the same as in example 7.

Comparative example 5

The components of the solid fat and oil were removed as compared with example 7, and the other conditions were the same as in example 7.

Comparative example 6

The composition of the solid fat was adjusted to 8.0% ozokerite wax, 8.0% coconut oil, 5.0% shea butter and 2.0% hydrogenated olive oil decyl alcohol as compared with example 7, and the other conditions were the same as in example 7.

Example 8

(1) Sun protection factor (SPF value) and Long-wave ultraviolet protection factor (PFA value) tests

The samples of the above examples and comparative examples were subjected to the sun protection factor (SPF value) and the long-wave uv protection factor (PFA value) according to the sun protection cosmetic sun protection factor (SPF value) and long-wave uv protection factor (PFA value) measuring methods in the cosmetic safety specification of the 2015 edition.

Sun protection factor (SPF value) test method: 10 healthy volunteer subjects of 18-60 years old, both male and female, were selected. Selecting an irradiation area on the skin of the back of the subject, irradiating 5 points with different doses of ultraviolet rays, and irradiating with the lowest irradiation level of erythema on the skinThe dose or minimum exposure time is the minimum erythema dose MED of the subject's normal skin. The test product is applied to the skin of the subject according to the ratio of (2.00 +/-0.05) mg/cm²Weighing the sample, uniformly coating the sample in a test area, waiting for 15-30 minutes, taking 5 points, irradiating with ultraviolet rays with different doses, and taking the minimum irradiation dose or the minimum irradiation time of the skin with erythema as the MED of the skin of the subject under the protection of the product. SPF values of samples for individual subjects were calculated using the formula:

individual SPF ═ MED of sample protected skin/MED of unprotected skin

Long wave ultraviolet protection index (PFA value) test method: 10 healthy volunteer subjects of 18-60 years old, both male and female, were selected. Selecting an irradiation area on the skin at the back of the subject, selecting ultraviolet rays with the wavelength of 320-400nm for irradiation, and setting the minimum ultraviolet irradiation dose or the minimum irradiation time required for generating slight blackening on the skin at the whole irradiation position 2-4 hours after irradiation as the minimum continuous blackening MPPD of the normal skin of the subject. The test product is applied to the skin of the subject according to the ratio of (2.00 +/-0.05) mg/cm²The sample is weighed. Accurately and uniformly smearing the sample on the skin of a tested part in a practical use mode, after waiting for 15-30 minutes, selecting ultraviolet rays with the wavelength of 320-400nm for irradiation, and taking the minimum ultraviolet irradiation dose or the minimum irradiation time for the skin of the tested person to be blackened as the MPPD of the skin of the tested person under the protection of the product. The PFA value of the samples for individual subjects was calculated using the following formula:

individual PFA is MPPD of sample protective skin/MPPD of non protective skin

The SPF values and PFA values of the examples and comparative examples were measured by the above-described measuring methods, and the results are shown in Table 8.

TABLE 8

Sample (I)	SPF value	PFA value
			Example 1	30.9	12.7(PA+++)
Example 2	43.9	11.2(PA+++)
			Example 3	34.0	8.8(PA+++)
Example 4	30.4	9.7(PA+++)
			Example 5	14.5	9.0(PA+++)
Example 6	47.7	13.0(PA+++)
			Example 7	27.4	10.8(PA+++)
Comparative example 1	28.5	11.0(PA+++)
			Comparative example 2	28.3	8.3(PA+++)
Comparative example 3	29.5	12.0(PA+++)
			Comparative example 4	29.1	11.0(PA+++)
Comparative example 5	29.5	12.1(PA+++)
			Comparative example 6	30.0	10.9(PA+++)

As can be seen from table 8, examples 1 to 7 all have good sunscreen effects, which indicates that the components provided by the present invention synergistically enhance to ensure the effectiveness of sunscreen effects, and example examples with different components and proportions can achieve sunscreen effects in a wider range, thereby satisfying different usage scenarios and requirements of users.

(2) Sensory evaluation of moisture Release Effect

The evaluation method comprises the following steps: using the products prepared in the examples and comparative examples as evaluation samples, a quantitative (2.0. + -. 0.1) mg/cm was administered²The samples of (1) were applied to the back of the hand and normally painted for 5s, and the condition of the water drops was evaluated by 6 points.

Evaluation criteria: the water discharge effect can be expressed in terms of the formation of water droplets. As shown in table 9.

TABLE 9

According to the above standards, the evaluation result score is more than or equal to 4, and the water outlet effect is considered to be better.

Evaluation target: 12 groups of volunteers were set, each group having 10 males and 10 females at an age of 25-50 years, with relevant pre-test training. The test samples were evaluated for their water-out effect and the results are shown in Table 10.

Watch 10

As can be seen from Table 10, examples 1-7 all had better water outlet effects than comparative examples 1-6, wherein the water outlet effect of example 7 was the best, reaching 100%. Through a large number of experiments, the emulsifier and the combination thereof mentioned in the above embodiments have good water outlet effect. In comparative example 1, the emulsifier was changed to a conventional water-in-oil emulsifier (sorbitan stearate), and it was found that the emulsifying effect was poor, failing to prepare a stable sample. In comparative example 2, the emulsifier was removed and the emulsification was not successful, as was the preparation of a stable sample. In comparative example 3, however, the amount of the emulsifier was increased, and as a result, it was found that the prepared sample had good stability but had no water-yielding effect during application. Therefore, the water yielding effect of the sample depends on the selection and the dosage of the emulsifier, and the sample with the stable and good water yielding effect can be prepared only by proper emulsifier combination and dosage.

(3) Sensory evaluation of Ice cream texture

The texture of ice cream is not only the tactile sensation of ice cream, but also the cool feeling brought by the gradual melting of the skin surface due to the body temperature. The sensory experience is mainly from the rational collocation of solid fat. It was found through a number of experiments that the solid fat and combination thereof mentioned in the above examples had a good ice cream texture, of which the ice cream texture of the sample prepared in example 7 was the most authentic with a cool and refreshing touch when spread on the skin. In comparative example 5, solid oil was removed, and as a result, the prepared sample was in the form of an emulsion and did not have a cool feeling due to melting even during application. In comparative examples 4 and 6, the prepared samples were in the form of a plaster and were difficult to spread on the skin, and had no cooling sensation due to melting. Only by reasonably matching solid grease and controlling the dosage, the sample with the ice cream texture can be prepared.

In summary, the examples 1 to 7 have better sunscreen effect and water outlet effect than the comparative examples 1 to 6, which shows that the components provided by the present invention have synergistic effect, the effectiveness of sunscreen effect is ensured, the water outlet effect of sunscreen cream is improved, the example examples with different components and proportions can achieve sunscreen effect with wider range, and different use scenes and requirements of users are met. The water outlet effect of the ice cream in the embodiment 7 is the best, the water outlet effect reaches 100%, the ice cream has the truest texture, and the ice cream has cool and refreshing touch feeling when being smeared on the skin. The inventor finds through a large number of experiments that stable sunscreen cream with good water yielding effect can be prepared by selecting specific emulsifier amount and emulsifier combination and matching with selection and amount of solid grease, the prepared sunscreen cream has ice cream texture, can achieve moisturizing and sunscreen effects, and can generate cooling feeling caused by gradual melting of body temperature when being coated on the surface of skin.

According to the sunscreen cream provided by the invention, by reasonably matching the type and proportion of the emulsifier and the emulsification process, products with different water outlet effects are prepared on the premise of ensuring the high and low temperature stability of the cream, and the texture of ice cream is matched, so that brand-new skin feeling experience is brought to people. The hardness and melting temperature of the cream body are adjusted by reasonably matching the type and proportion of the solid grease, so that the texture of the ice cream and the cool skin feeling brought by triggering melting are provided for people in the smearing process. On the premise of ensuring the efficacy, the ice cream has the appearance and texture of ice cream, the body temperature of a human body can trigger the cream body to melt on the surface of skin in the smearing process, heat is taken away, and the water outlet effect is assisted, so that the ice cream gives people a fresh and cool and moist sensory experience.

The applicant states that the present invention is illustrated in detail by the above examples, but the present invention is not limited to the above detailed methods, i.e. it is not meant that the present invention must rely on the above detailed methods for its implementation. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions for the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.

Claims

1. The sunscreen cream is characterized by comprising the following components in percentage by mass:

16.0 percent of organic sun-screening agent

13.0 percent of solid grease

10.0 percent of liquid grease

0.8 percent of emulsifier

Humectant 14.0%

Additive 1.3%

The balance of deionized water;

the organic sunscreen agent is a combination of 3.0% ethylhexyl salicylate, 8.0% ethylhexyl methoxycinnamate, 3.0% hexyl diethylaminobenzoyl benzoate and 2.0% bis-ethylhexyloxyphenol methoxyphenyl triazine;

the solid grease is a combination of 5.0% of ozokerite, 1.0% of hydrogenated olive oil decyl alcohol ester, 5.0% of coconut oil and 2.0% of shea butter;

the emulsifier is 0.8 percent of cetyl PEG/PPG-10/1 polydimethylsiloxane;

the liquid grease is a combination of 4.0% of C12-15 alcohol benzoate and 6.0% of cyclopenta dimethyl siloxane;

the humectant is a combination of 6.0% of glycerin and 8.0% of 1, 3-butanediol;

the additive is a combination of methylparaben 0.2%, propylparaben 0.1%, phenoxyethanol 0.3%, tocopheryl acetate 0.2%, ascorbyl tetraisopalmitate 0.2% and essence 0.3%;

the preparation method of the sunscreen cream comprises the following steps:

(1) dissolving organic sunscreen agent, solid oil, liquid oil, emulsifier and antiseptic under heating and stirring to obtain oil phase;