CN115969749A - Sunscreen composition and preparation method thereof - Google Patents
Sunscreen composition and preparation method thereof Download PDFInfo
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- CN115969749A CN115969749A CN202211732910.XA CN202211732910A CN115969749A CN 115969749 A CN115969749 A CN 115969749A CN 202211732910 A CN202211732910 A CN 202211732910A CN 115969749 A CN115969749 A CN 115969749A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a sunscreen composition and a preparation method thereof, the sunscreen composition comprises water, a chemical sunscreen agent, a physical sunscreen agent, an emulsifier, a preservative, a thickening agent, a film forming agent, a plant extract and the like, wherein the chemical sunscreen agent is a compound of ethylhexyl methoxycinnamate, methylene bis-benzotriazolyl tetramethylbutyl phenol, ethylhexyl salicylate, diethylamino hydroxybenzoyl hexyl benzoate, phenyl benzimidazole sulfonic acid and ethylhexyl triazone, the emulsifier is a compound of behenyl PEG-20 esters, potassium cetyl phosphate and cetearyl olive oleate, and the plant extract comprises an extract of caper fruit, an extract of lotus seed and an extract of cedar bud. A preparation method of the sunscreen composition comprises the following steps: and uniformly mixing and emulsifying all the components in the sunscreen composition to obtain the sunscreen composition. The application has the effect of obviously improving the mildness and the stability of the sunscreen composition.
Description
Technical Field
The invention relates to the field of cosmetics, in particular to a sunscreen composition and a preparation method thereof.
Background
Ultraviolet rays are one of the factors causing skin aging. To slow down the aging of the skin, uv protection is essential. In order to achieve the purpose of whitening and resisting aging, more and more people begin to apply sunscreen products such as sunscreen compositions, sunscreen sprays and the like.
The sunscreen products on the market are various in types, the products mainly attacking physical sunscreen contain a large amount of physical sunscreens, the face is easily whitened after the sunscreen products are used, the waterproof and sweat-proof effects are common, and in order to solve the problems that the face is whitened after the physical sunscreens are used and the makeup effect is common, chemical sunscreen products containing a large amount of chemical sunscreens are researched and developed. The chemical sunscreen agent has a good sunscreen effect and a good makeup-holding effect, and the problem that a physical sunscreen agent is easily whitened is solved.
The problem of insufficient stability of the currently used chemical sunscreen agents in chemical sunscreen product systems is common. At least 41 million flag sunscreen products were urgently recalled in 2017 by seniors because the chemical sunscreen agents in the products are separated out and crystallized during storage and transportation, so that the products are precipitated, the skin feels different when the products are used, and the sun protection capability is greatly reduced. Therefore, there is a need for a sunscreen product that is more stable in the system.
Disclosure of Invention
In order to improve the system stability of the sunscreen product, the application provides a sunscreen composition and a preparation method thereof. In the research of the application, the sunscreen composition added with the chemical sunscreen agent compounded by ethylhexyl methoxycinnamate, methylene bis-benzotriazolyl tetramethyl butyl phenol, ethylhexyl salicylate, diethylamino hydroxybenzoyl hexyl benzoate, phenyl benzimidazole sulfonic acid and ethylhexyl triazone and the emulsifier compounded by behenyl PEG-20 esters, potassium cetyl phosphate and cetearyl olive oleate has good stability, the isolation and precipitation of the sunscreen composition are further reduced, and the plant extract compounded by the caper fruit extract, the lotus seed extract and the cedar bud extract can obviously reduce the irritation of the chemical sunscreen agent to the skin and improve the mildness of the sunscreen composition.
In a first aspect, the sunscreen composition provided by the present application adopts the following technical scheme:
a sunscreen composition comprises the following components in percentage by mass:
chemical sunscreen agents: 2.55 to 45 percent;
physical sunscreen agents: 1% -10%;
humectant: 0.56 to 14 percent;
emulsifier: 0.6 to 18 percent;
preservative: 0.06% -3%;
thickening agent: 0.11 to 10 percent;
film forming agent: 0.05 to 5 percent;
pH regulator: 0.5 to 5 percent;
plant extracts: 0.15 to 7 percent;
the balance of water;
wherein the chemical sunscreen agent is a compound of ethylhexyl methoxycinnamate, methylene bis-benzotriazolyl tetramethyl butyl phenol, ethylhexyl salicylate, diethyl amino oxybenzoyl hexyl benzoate, phenyl benzimidazole sulfonic acid and ethylhexyl triazone;
wherein the emulsifier is a compound of PEG-20 tribehenate, potassium cetyl phosphate and cetearyl olive oleate;
wherein the thickening agent is the compound of cetostearyl alcohol, hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer and xanthan gum;
wherein the plant extract comprises caper fruit extract, lotus seed extract and cedar bud extract.
In the technical scheme, ethylhexyl methoxycinnamate can effectively prevent 280-310nm ultraviolet rays, the absorption waveband of methylene bis-benzotriazolyl tetramethyl butyl phenol covers UVB and UVA, ethylhexyl salicylate can effectively prevent 290-330nm ultraviolet rays, diethyl amino hydroxy benzoyl benzoic acid hexyl ester can effectively prevent 320-400nm ultraviolet rays, phenyl benzimidazole sulfonic acid can effectively prevent 290-340nm ultraviolet rays, and ethylhexyl triazone can effectively prevent 290-320nm ultraviolet rays; as is well known, the sun protection is mainly against short-wave UVB of 290-320nm and long-wave UVA of 320-400nm, and the compound of the chemical sun protection agent has good effect of blocking ultraviolet rays.
The compounding of the emulsifier compounded by the PEG-20 esters of the behenyl behenate, the potassium cetyl phosphate and the cetearyl olivate and the chemical sun-screening agent can improve the stability of the chemical sun-screening agent in the sun-screening composition and further reduce the occurrence of the segregation and precipitation of the sun-screening composition; and the thickener compounded by cetostearyl alcohol, hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer and xanthan gum can further uniformly disperse all components in the sunscreen composition, further improve the stability of the sunscreen composition system and further improve the use experience of the sunscreen composition.
The caper fruit extract contains flavone, alkaloid and the like, so that the caper fruit extract has the effects of resisting inflammation, easing pain and resisting oxidation; the crowtoe seed extract has the effects of moistening, relieving and repairing skin and avoiding skin dryness; the cedar bud extract has effects of promoting skin tissue structure regeneration, and resisting skin aging.
The compounding of the caper fruit extract, the crowberry seed extract and the cedar bud extract can obviously reduce the self-decomposition reaction of the chemical sunscreen agent after contacting with the sunlight, reduce substances which are irritant and harmful to the skin, such as free radicals and the like, generated by the chemical sunscreen agent, further improve the mildness of the sunscreen composition and further reduce the sensitization risk of the sunscreen composition during use.
Preferably, the ethylhexyl methoxycinnamate accounts for the weight percentage of the sunscreen composition: 0.5 to 8 percent;
the mass percentage of the methylene bis-benzotriazolyl tetramethyl butyl phenol in the sunscreen composition is as follows: 0.5 to 8 percent;
the ethylhexyl salicylate accounts for the weight percentage of the sunscreen composition as follows: 0.5 to 8 percent;
the diethylamino hydroxybenzoyl hexyl benzoate accounts for the mass percent of the sunscreen composition and comprises the following components: 0.5 to 8 percent;
the mass percentage of the phenylbenzimidazole sulfonic acid in the sunscreen composition is as follows: 0.5 to 8 percent;
the ethylhexyl triazone accounts for the weight percentage of the sunscreen composition as follows: 0.05 to 5 percent.
In the technical scheme, the chemical sun-screening agent prepared according to the proportion has a better ultraviolet protection effect, and the sun-screening effect of the sun-screening composition is further improved by the protection effect of the physical sun-screening agent.
Preferably, the caper fruit extract accounts for the weight percentage of the sunscreen composition: 0.5 to 2 percent;
the crowtoe seed extract accounts for the weight percentage of the sunscreen composition and comprises the following components: 0.5 to 1.5 percent;
the cedar bud extract accounts for the weight percentage of the sunscreen composition: 0.5 to 1.5 percent.
In the technical scheme, the caper fruit extract, the crowtoe seed extract and the cedar bud extract are compounded according to the proportion, so that the chemical sun-screening agent can be further inhibited from generating harmful substances in the sun, and the mildness of the sun-screening composition is further improved.
Preferably, the sunscreen composition also comprises 2.05-33% of an emollient by mass percentage.
According to the technical scheme, a certain amount of emollient is added into the sunscreen composition, so that the skin feel of the sunscreen composition is further improved, and the sunscreen composition has certain moisturizing and skin-care effects while resisting ultraviolet rays.
Preferably, the sunscreen composition further comprises a skin conditioner which accounts for 0.022% -6.2% of the sunscreen composition by mass, and the skin conditioner comprises bisabolol, glyceryl tridylate choline salt and tetrahydro-methyl pyrimidine carboxylic acid.
In the technical scheme, the combination of the bisabolol, the glyceryl tridylate choline salt and the tetrahydro-methyl pyrimidine carboxylic acid has obvious anti-inflammatory and antibacterial effects, can further improve the anti-allergic property of the skin and further reduce the irritation of the sunscreen composition to the skin.
Preferably, the sunscreen composition further comprises 0.05-5% of tocopherol acetate by mass of the sunscreen composition.
According to the technical scheme, the tocopherol acetate is added into the sunscreen composition, so that the level of free radicals in the skin can be well reduced, a good anti-aging effect is achieved, and the purpose of skin anti-aging can be achieved by the sunscreen composition from the outer edge and the endogenous direction.
Preferably, the plant extract further comprises oregano oil, and the oregano oil accounts for the following mass percent of the sunscreen composition: 0.5 to 2 percent.
In the technical scheme, the main components of the oregano oil comprise terpinene, linalool, methyl-p-allylphenol, eucalyptol, eugenol, terpineol and the like, and the oregano oil has remarkable antibacterial and antioxidant effects.
The compounding of the caper fruit extract, the crowberry seed extract, the cedar bud extract and the origanum oil can further promote the sunscreen composition to be blended with oil and fat naturally secreted by the skin, so that the sunscreen composition can be better and more durably attached to the skin, and the sunscreen composition can be used for long-acting sunscreen.
In a second aspect, the present application provides a method for preparing a sunscreen composition, which adopts the following technical scheme:
a method of preparing a sunscreen composition comprising the steps of:
the method comprises the following steps: uniformly mixing water, humectant, preservative, potassium cetyl phosphate and xanthan gum, and heating to 75-78 ℃ to dissolve to obtain a first mixture; mixing physical sun-screening agent, film-forming agent, ethylhexyl methoxycinnamate, ethylhexyl salicylate, hexyl diethylamino hydroxybenzoyl benzoate, ethylhexyl triazone, cetearyl olive oleate, cetearyl alcohol and PEG-20 tribehenate, heating to 75-78 deg.C, and dissolving to obtain a second mixture;
step two: uniformly mixing the first mixture and the second mixture, emulsifying to obtain a third emulsion, adding a pH regulator and phenylbenzimidazole sulfonic acid into the third emulsion, and homogenizing to obtain a fourth mixture;
step three: and adding the hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer into the fourth mixture, uniformly stirring, cooling to 50-55 ℃, adding the methylene bis-benzotriazolyl tetramethyl butylphenol and the plant extract, and uniformly stirring to obtain the sunscreen composition.
Preferably, in the first step, the physical sun-screening agent, the emollient, the film-forming agent, ethylhexyl methoxycinnamate, ethylhexyl salicylate, hexyl diethylamino oxybenzoate, ethylhexyl triazone, cetearyl olivate, cetearyl alcohol, tocopherol acetate, and PEG-20 tribehenate are mixed uniformly and heated to 75-78 ℃ to dissolve to obtain a second mixture;
and in the third step, adding the hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer into the fourth mixture, uniformly stirring, cooling to 50-55 ℃, adding the methylene bis-benzotriazolyl tetramethyl butylphenol, the skin conditioner and the plant extract, and uniformly stirring to obtain the sunscreen composition.
Preferably, in the second step, the pH regulator and the phenylbenzimidazole sulfonic acid are pre-mixed uniformly to be transparent, and then added into the third emulsion.
In the technical scheme, the sunscreen composition is prepared according to the scheme, so that all substances in the sunscreen composition can be dispersed more uniformly, and the stability of the sunscreen composition is further improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the compounding of the emulsifier and the chemical sun-screening agent compounded by the PEG-20 tribehenate, the potassium cetyl phosphate and the cetearyl olivetoleate can improve the stability of the chemical sun-screening agent in the sun-screening composition and further reduce the occurrence of the segregation and precipitation of the sun-screening composition; and the thickener compounded by cetostearyl alcohol, hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer and xanthan gum can further uniformly disperse all components in the sunscreen composition, further improve the stability of the sunscreen composition system and further improve the use experience of the sunscreen composition.
2. The compounding of the caper fruit extract, the lotus seed extract and the cedar bud extract can obviously reduce the self-decomposition reaction of the chemical sun-screening agent after contacting with the sunlight, reduce substances which are irritant and harmful to the skin and generated by the chemical sun-screening agent, such as free radicals and the like, further improve the mildness of the sun-screening composition and further reduce the sensitization risk of the sun-screening composition during use.
3. The compounding of the caper fruit extract, the crowberry seed extract, the cedar bud extract and the origanum oil can further promote the sunscreen composition to be blended with oil and fat naturally secreted by the skin, so that the sunscreen composition can be better and more durably attached to the skin, and the sunscreen composition can be used for long-acting sunscreen.
Detailed Description
The materials in the following examples and comparative examples are commercially available.
Examples 1 to 3
A sunscreen composition comprises solvent, chemical sunscreen agent, physical sunscreen agent, humectant, emollient, emulsifier, skin conditioner, plant extract, antiseptic, thickener, film forming agent, pH regulator, antioxidant, and aromatic.
Wherein the solvent is water.
Wherein the chemical sunscreen agent is a compound of ethylhexyl methoxycinnamate, methylene bis-benzotriazolyl tetramethyl butyl phenol, ethylhexyl salicylate, diethyl amino hydroxy benzoyl benzoate, phenyl benzimidazole sulfonic acid and ethylhexyl triazone.
Wherein, the physical sun-screening agent is the compound of silica and titanium dioxide.
Wherein, the humectant is a compound of butanediol, PEG/PPG-17/6 copolymer and beta-glucan.
Wherein, the emollient is the compound of dioctyl carbonate, octyl polymethylsiloxane, polydimethylsiloxane, isododecane and polymethylsilsesquioxane.
Wherein, the emulsifier is the compound of PEG-20 tribehenate, potassium cetyl phosphate and cetearyl olive oleate.
Wherein, the skin conditioner is a compound of bisabolol, glyceryl tridylate choline salt and tetrahydro-methyl pyrimidine carboxylic acid.
Wherein the plant extract is a compound of caper fruit extract, lotus seed extract and cedar bud extract.
Wherein the preservative is the compound of caprylyl glycol and phenoxyethanol.
Wherein the thickening agent is a compound of cetostearyl alcohol, hydroxyethyl acrylate/acryloyl dimethyl sodium taurate copolymer and xanthan gum.
Wherein the film forming agent is VP/eicosene copolymer.
Wherein the pH regulator is arginine.
Wherein the antioxidant is tocopherol acetate.
Wherein the aromatic is essence.
Wherein the caper fruit extract and the crowtoe seed extract are obtained from Shanghai JiaKai Biotech limited.
Wherein the cedar bud extract is purchased from Jiafa lion (Shanghai) trade company Limited.
Wherein, the contents of each component of examples 1 to 3 are shown in Table 1, unit: and (kg).
Table 1:
the preparation method of the embodiment 1-3 comprises the following steps:
the method comprises the following steps: uniformly mixing water, butanediol, potassium cetyl phosphate, PEG/PPG-17/6 copolymer, phenoxyethanol, caprylyl glycol, xanthan gum, tetrahydro-methylpyrimidine carboxylic acid and beta-glucan, heating to 78 ℃ at 220r/min, and dissolving to obtain a first mixture;
step two: mixing ethylhexyl methoxycinnamate, dioctyl carbonate, PEG-20 tribehenate, ethylhexyl salicylate, hexyl diethylamino hydroxybenzoyl benzoate, octyl methicone, polydimethylsiloxane, silica, titanium dioxide, isododecane, cetearyl olive oleate, ethylhexyl triazone, polymethylsilsesquioxane, cetearyl alcohol, VP/eicosene copolymer and tocopherol acetate uniformly, heating to 78 ℃ at 220r/min, and dissolving to obtain a second mixture;
step three: mixing the first mixture and the second mixture, and emulsifying at 78 deg.C for 20min to obtain a third emulsion.
Step four: mixing arginine and phenyl benzimidazole sulfonic acid, stirring at 220r/min until the mixture is transparent, and adding the mixture into the third emulsion to obtain a fourth mixture.
Step five: and adding the hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer into the fourth mixture, stirring at 220r/min for 5min, cooling to 50 ℃, adding methylene bis-benzotriazolyl tetramethyl butylphenol, bisabolol, glyceryl tridylate choline salt, plant extract and essence, and homogenizing at 2200r/min for 5min to obtain the sunscreen composition.
Example 4
A sunscreen composition, different from example 2, the plant extract is a combination of caper fruit extract, lotus seed extract, cedar bud extract and oregano oil.
Wherein the addition amount of oregano oil is 2kg.
The amount of water added was adjusted to 20.665kg.
Among them, origanum oil was purchased from the Biotech company of Mungting, jiangsu.
Example 5
A sunscreen composition was prepared in a manner different from that of example 4 except that the amount of oregano oil was adjusted to 1kg and the amount of water was adjusted to 21.665kg.
Example 6
A sunscreen composition was prepared in a manner different from that of example 4 except that the amount of oregano oil was adjusted to 0.5kg and the amount of water was adjusted to 22.165kg.
Example 7
A sunscreen composition, differing from example 5 in that oregano oil is replaced by sunflower oil in amounts.
Wherein, the sunflower seed oil is from the market.
Comparative example 1
A sunscreen composition, different from that of example 2, wherein PEG-20 tribehenate is replaced with PEG-15 laurate in equal amount.
Comparative example 2
A sunscreen composition differing from that of example 2 in that potassium cetyl phosphate is replaced equally with PEG-15 laurate.
Comparative example 3
A sunscreen composition, differing from example 2 in that cetearyl olivetoleate is replaced equally with PEG-15 laurate.
Comparative example 4
A sunscreen composition, differing from example 2 in that the caper fruit extract is replaced with the passion fruit extract in equal amounts.
Wherein the passion fruit extract is commercially available, extracted by a water extraction method, and the extraction ratio is 10:1.
comparative example 5
A sunscreen composition, different from example 2, is prepared by replacing extract of Lotus japonicus seed with cortex Phellodendri extract.
Wherein the phellodendron extract is commercially available, extracted by a water extraction method, and the extraction ratio is 10:1.
comparative example 6
A sunscreen composition, different from example 2, in which the extract of cedar bud was replaced with an equal amount of centella asiatica extract.
Wherein the centella asiatica extract is commercially available, extracted by a water extraction method, and the extraction ratio is 10:1.
comparative example 7
A sunscreen composition, different from example 2, is prepared by replacing caper fruit extract, lotus japonicus seed extract and cedar bud extract with water in equal amount.
The following tests were carried out for each of the sunscreen compositions of the above examples and comparative examples.
Test 1
Stability test
With reference to GB/T29665-2013, stability tests were carried out using more stringent standards than GB/T29665-2013.
(1) Heat resistance: keeping the temperature at 48 deg.C for 20 days, recovering to room temperature, maintaining for more than 8 hr, and observing whether the sunscreen composition has layering, solid precipitation or other inhomogeneous phenomenon.
(2) Cold resistance: freezing at-15 deg.C for 20 days, recovering to room temperature, maintaining for more than 8 hr, and observing whether the sunscreen composition has layering, solid precipitation or other inhomogeneous phenomenon.
Cold and hot alternation: alternately circulating the sun-screening composition at 48 deg.C and-15 deg.C for 24 hr for 20d, recovering to room temperature, maintaining for more than 8 hr, and observing whether the sun-screening composition has layering, solid precipitation or other inhomogeneous phenomenon.
(3) And (4) centrifugal examination: after centrifugation at 2500r/min for 30min, the sunscreen composition was observed for delamination.
The results of the above tests are shown in Table 2.
Table 2:
in the above test, if the sunscreen composition does not delaminate, precipitate solids, or otherwise become heterogeneous in the system, the stability test passes, otherwise the stability test fails.
After testing, the sunscreen compositions of examples 1-7 and comparative examples 4-7 pass the above stability test, which shows that the sunscreen compositions of examples 1-7 and comparative examples 4-7 have high system stability. The sunscreen compositions of comparative examples 1-3 failed the stability test described above, which indicates that the sunscreen compositions of comparative examples 1-3 do not have high system stability.
Comparative examples 1-3 differ from example 2 in that comparative examples 1-3 used PEG-15 laurate instead of PEG-20 tribehenate, potassium cetyl phosphate, and cetearyl olive oleate, respectively, and comparative examples 1-3 were significantly less stable than example 2. Therefore, the emulsifier compounded by the PEG-20 tribehenate, the potassium cetyl phosphate and the cetearyl olive oleate has the effects of unexpectedly improving the system stability of the sunscreen composition and further reducing the occurrence of the isolation and precipitation of the sunscreen composition.
Test 2
Patch test on human skin
Refer to the skin-enclosed patch test on page 542 of the cosmetic hygiene Specification (2015 edition).
150 volunteers aged 18 to 60 years, healthy, free of skin diseases, were randomly selected, and divided into 15 groups on average, 10 persons were randomly assigned to each group, one of the groups was a negative blank control group, and 14 groups were each prepared using the sunscreen compositions of the above examples and comparative examples.
Before the test, 0.025g of the sunscreen composition of each of the above examples and comparative examples was applied to an area of 18mm 2 And in a spot tester with the depth of 1mm, after the spot tester is exposed to natural sunlight for 30min, the spot tester is externally applied to the bent side of the forearm of the testee by a medical adhesive tape, and no substance is placed in the spot tester of the negative blank control group.
After 24 hours, the skin reaction was observed and evaluated at 0.5 hours, 24 hours, and 48 hours after the removal of the skin spot tester according to table 1 (skin closed patch test skin reaction grading standard) on page 542 of "cosmetic hygiene standards" (2015 edition), and the test results are shown in table 3.
Table 3:
tests show that the sunscreen compositions of examples 1-7 and comparative examples 1-3 have no irritation to skin, which indicates that the sunscreen compositions of examples 1-7 and comparative examples 1-3 have good mildness and no irritation to skin. The sunscreen compositions of comparative examples 4-7 are irritating to the skin, which indicates that the sunscreen compositions of comparative examples 4-7 are not mild.
Comparative examples 4 to 7 are different from example 2 in that comparative examples 4 to 6 use different substances instead of caper fruit extract, lotus corniculatus seed extract, and cedar bud extract, respectively, comparative example 7 does not add a plant extract, and comparative examples 4 to 7 are significantly more irritating than example 2. Therefore, the plant extract compounded by the caper fruit extract, the lotus japonicus seed extract and the cedar bud extract has the unexpected effect of improving the mildness of the sunscreen composition, and further reduces the sensitization risk of the sunscreen composition when in use.
Test 3
Durability test
The test is carried out by adopting an SPF sun protection factor analyzer SPF-290AS of the American Solar Light.
140 volunteers aged 18-60 years, healthy, free of skin diseases, were randomly selected, and divided into 14 groups of 10 individuals randomly. 1g of the sunscreen composition of each of the above examples and comparative examples was uniformly applied to the back of the left hand of a volunteer at a distance of 4cm 2 After waiting for 5 minutes for the sunscreen composition to completely dry, the sun protection factor analyzer measures the sun protection factor and records the result as the SPF value, and the test results are shown in table 4.
After the volunteers finish the steps, the backs of the left hands are respectively immersed into the wash basins filled with clear water of the same type, the left hands are swung back and forth for 30s, then the left hands are taken out and naturally dried, after the backs of the hands are completely dried, the sun protection factor analyzer is used for measuring, the measurement result is recorded as the SPF value after soaking, and the test result is shown in table 4.
Table 4:
tests show that the sunscreen compositions of the examples and the comparative examples have good SPF values, and the sunscreen compositions of the examples 4 to 6 have good water resistance.
The difference between examples 4-6 and example 2 is that the plant extracts of examples 4-6 are a combination of caper fruit extract, lotus seed extract, cedar bud extract and oregano oil, and compared with example 2, the new addition of oregano oil in examples 4-6 has a significantly higher water resistance than example 2, so that the plant extracts of caper fruit extract, lotus seed extract, cedar bud extract and oregano oil have an unexpected effect of promoting the combination of the sunscreen composition and oil naturally secreted by the skin, and can further improve the adhesion of the sunscreen composition to the skin, and only improve the water resistance of the sunscreen composition, so that the sunscreen composition can be used for long-term sunscreen.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. The sun-screening composition is characterized by comprising the following components in percentage by mass:
chemical sunscreen agents: 2.55% -45%;
physical sunscreens: 1% -10%;
humectant: 0.56% -14%;
emulsifier: 0.6% -18%;
preservative: 0.06% -3%;
thickening agent: 0.11% -10%;
film-forming agent: 0.05% -5%;
pH regulator: 0.5% -5%;
plant extracts: 1.5% -7%;
the balance of water;
wherein the chemical sun-screening agent is a compound of ethylhexyl methoxycinnamate, methylene bis-benzotriazolyl tetramethyl butyl phenol, ethylhexyl salicylate, diethylamino benzoyl benzoic acid hexyl ester, phenyl benzimidazole sulfonic acid and ethylhexyl triazone;
wherein the emulsifier is a compound of PEG-20 tribehenate, potassium cetyl phosphate and cetearyl olive oleate;
wherein the thickening agent is the compound of cetostearyl alcohol, hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer and xanthan gum;
wherein the plant extract comprises caper fruit extract, lotus corniculatus seed extract and cedar bud extract.
2. The sunscreen composition according to claim 1, wherein the ethylhexyl methoxycinnamate comprises, by mass: 0.5% -8%;
the mass percentage of the methylene bis-benzotriazolyl tetramethyl butyl phenol in the sunscreen composition is as follows: 0.5% -8%;
the ethylhexyl salicylate accounts for the mass percent of the sunscreen composition and comprises the following components: 0.5% -8%;
the mass percentage of the diethylamino hydroxybenzoyl hexyl benzoate in the sunscreen composition is as follows: 0.5% -8%;
the mass percentage of the phenylbenzimidazole sulfonic acid in the sunscreen composition is as follows: 0.5% -8%;
the ethylhexyl triazone accounts for the weight percentage of the sunscreen composition as follows: 0.05% -5%.
3. The sunscreen composition according to claim 2, wherein the caper fruit extract comprises the following components in percentage by mass: 0.5% -2%;
the crowtoe seed extract accounts for the weight percentage of the sunscreen composition and comprises the following components: 0.5% -1.5%;
the cedar bud extract accounts for the weight percentage of the sunscreen composition: 0.5% -1.5%.
4. The sunscreen composition of claim 3, further comprising 2.05% to 33% by weight of an emollient.
5. The sunscreen composition of claim 4, further comprising a skin conditioner in an amount of 0.022% to 6.2% by weight of the sunscreen composition, wherein the skin conditioner comprises bisabolol, glyceryl tridylate choline salt, and tetrahydro methyl pyrimidine carboxylic acid.
6. The sunscreen composition of claim 5, further comprising tocopherol acetate in an amount of 0.05% to 5% by weight of the sunscreen composition.
7. The sunscreen composition according to claim 1, wherein the plant extract further comprises oregano oil, and the oregano oil comprises the following components in percentage by mass of the sunscreen composition: 0.5% -2%.
8. A process for the preparation of a sunscreen composition according to claim 1 comprising the steps of:
the method comprises the following steps: uniformly mixing water, a humectant, a preservative, potassium cetyl phosphate and xanthan gum, and heating to 75-78 ℃ to dissolve to obtain a first mixture; mixing a physical sun-screening agent, a film-forming agent, ethylhexyl methoxycinnamate, ethylhexyl salicylate, hexyl diethylamino benzoyl benzoate, ethylhexyl triazone, cetearyl olive oleate, cetearyl alcohol and PEG-20 tribehenate uniformly, and heating to 75-78 ℃ to dissolve to obtain a second mixture;
step two: uniformly mixing the first mixture and the second mixture, emulsifying to obtain a third emulsion, adding a pH regulator and phenylbenzimidazole sulfonic acid into the third emulsion, and homogenizing to obtain a fourth mixture;
step three: and adding the hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer into the fourth mixture, uniformly stirring, cooling to 50-55 ℃, adding methylene bis-benzotriazolyl tetramethyl butylphenol and the plant extract, and uniformly stirring to obtain the sunscreen composition.
9. The method for preparing the sunscreen composition according to claim 8, wherein in the first step, the physical sunscreen agent, the emollient, the film-forming agent, ethylhexyl methoxycinnamate, ethylhexyl salicylate, hexyl diethylaminobenzoyl benzoate, ethylhexyl triazone, cetearyl olivate, cetearyl alcohol, tocopheryl acetate, and PEG-20 behenate are mixed and heated to 75 to 78 ℃ to dissolve them to obtain a second mixture;
and in the third step, adding the hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer into the fourth mixture, uniformly stirring, cooling to 50-55 ℃, adding the methylene bis-benzotriazolyl tetramethyl butylphenol, the skin conditioner and the plant extract, and uniformly stirring to obtain the sunscreen composition.
10. The method for preparing a sunscreen composition according to claim 8, wherein in the second step, the pH adjusting agent and the phenylbenzimidazole sulfonic acid are mixed uniformly in advance to be transparent, and then added into the third emulsion.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117598932A (en) * | 2023-11-29 | 2024-02-27 | 追光生物科技有限公司 | Sun-screening synergistic composition, water-in-oil type high-power sun-screening composition and preparation method thereof |
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| CN117598932A (en) * | 2023-11-29 | 2024-02-27 | 追光生物科技有限公司 | Sun-screening synergistic composition, water-in-oil type high-power sun-screening composition and preparation method thereof |
| CN117598932B (en) * | 2023-11-29 | 2024-05-10 | 追光生物科技有限公司 | Sun-screening synergistic composition, water-in-oil type high-power sun-screening composition and preparation method thereof |
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