CN114129461A - Sunscreen skin care product containing composite titanium dioxide and preparation method thereof - Google Patents
Sunscreen skin care product containing composite titanium dioxide and preparation method thereof Download PDFInfo
- Publication number
- CN114129461A CN114129461A CN202111428485.0A CN202111428485A CN114129461A CN 114129461 A CN114129461 A CN 114129461A CN 202111428485 A CN202111428485 A CN 202111428485A CN 114129461 A CN114129461 A CN 114129461A
- Authority
- CN
- China
- Prior art keywords
- titanium dioxide
- sunscreen
- skin care
- care product
- composite titanium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000002360 preparation method Methods 0.000 title claims abstract description 9
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Classifications
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- A—HUMAN NECESSITIES
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Abstract
The invention discloses a sunscreen skin care product containing composite titanium dioxide and having the effects of protection, repair and sunscreen and a preparation method thereof, wherein the sunscreen skin care product comprises the following components in percentage by mass: 2-9% of ethylhexyl methoxycinnamate, 1-5% of diethyl-oxybenzoyl-benzoic acid hexyl ester, 1-4% of phenyl benzimidazole sulfonic acid, 0.5-3% of 4-methylbenzylidene camphor, 4-10% of hydrophobization treatment composite titanium dioxide and the balance of conventional cosmetic additives. The invention obtains the sunscreen skin care product by compounding 200-300 nanometer CR-50 AS titanium dioxide and 10-20 nanometer MT-012 titanium dioxide with particle size and matching with a chemical sunscreen agent, a whitening agent and an anti-allergy agent, and has the functions of meeting the development requirement of a high SPF value sunscreen product, refreshing and non-greasy skin, protecting and repairing all wave bands, and screening sun and whitening.
Description
Technical Field
The invention relates to a skin care product and a preparation method thereof, in particular to a sunscreen skin care product composition containing composite titanium dioxide and a preparation method thereof.
Background
With the aggravation of atmospheric pollution and ozone layer destruction, the damage of ultraviolet radiation in sunlight to human skin is increasingly strengthened, and the use of sunscreen cosmetics becomes the basic requirement of healthy life of people.
When human skin is exposed to sunlight, epidermal cells are damaged, pigment synthesis is accelerated, the skin is sunburned and even sunburned, and more serious pigmented skin cancer can be caused. Exposure to solar radiation causes sunburn, the appearance of edema or wrinkles, premature skin aging, telangiectasia, elastosis, muscle relaxation, age spots (lentigo/freckle), seborrheic keratosis, acute keratosis, skin cancer (basal and squamous cell carcinoma, melanoma, etc.). At the cellular level, solar radiation can produce severe structural and functional alterations of intramembrane proteins and lipids, chromosomes, mitochondrial DNA, and immunologically active factors. UV radiation penetrates the skin to different depths, resulting in different biological effects.
The existing sunscreen products in the market mainly adopt physical and chemical sunscreen, and the products with high SPF (specific pathogen free) sunscreen value tend to bring greasy and heavy skin feeling and poor wiping feeling, and meanwhile, fewer products for sunscreen and whitening are available. A sunscreen product with all-band protection and repair, fresh skin feeling, good wiping feeling, sun protection and whitening is an urgent need for consumers.
Disclosure of Invention
The invention aims to provide a sunscreen skin care product containing composite titanium dioxide and having the effects of protection, repair and sunscreen and a preparation method thereof.
The purpose of the invention is realized by the following technical scheme:
the invention provides a sunscreen skin care product containing composite titanium dioxide, which comprises a sunscreen agent and a water phase component, and is characterized in that: the sunscreen agent and the water phase component comprise the following components in percentage by mass:
2-9% of ethylhexyl methoxycinnamate, 1-5% of diethylamino hydroxybenzoyl hexyl benzoate, 1-4% of phenylbenzimidazole sulfonic acid, 0.5-3% of 4-methylbenzylidene camphor, 4-10% of hydrophobization treatment composite titanium dioxide, and the balance of 3-6% of emulsifier, 5-15% of isododecane, 1-5% of C12-15 alcohol benzoate, 1-5% of cyclopenta dimethyl siloxane, 0.2-2% of octyl polymethyl siloxane, 0.2-2% of bentonite, 5-20% of humectant as an aqueous phase component, 0.5-2% of 1, 2-hexanediol, 0.5-2% of whitening agent, 0.5-2% of anti-allergic agent, 0.3-0.8% of phenoxyethanol, and the balance of water.
The sun-screening skin care product formula of the invention comprises the following functional substances:
ethylhexyl methoxycinnamate: the ultraviolet UVB absorbent with excellent oil solubility can effectively absorb ultraviolet rays with the wavelength of 280-310 nm. And the ultraviolet absorption rate is high, the irritation to skin is small, and the safety is good. The highest addition amount limited by domestic regulations is 10 percent;
diethylamino hydroxybenzoyl hexyl benzoate: the oil-soluble ultraviolet UVA absorbent absorbs ultraviolet rays with the wavelength of 320-400 nm. The sunscreen composition has the advantages of no molecular cracking, good light stability, no need of adding any stabilizer, and good compatibility with other sunscreen components. The highest addition amount limited by domestic regulations is 10 percent;
phenylbenzimidazole sulfonic acid: water-soluble chemical sunscreens, an ultraviolet UVB sunscreen, also absorb a very small portion of the UVA band. Under sunlight, the protective capacity and the protective quality of the sunscreen do not gradually decrease with time, so that the sunscreen can relieve the decomposition of other UVB separants in the sunscreen to some extent. Phenylbenzimidazole sulfonic acid also converts incident ultraviolet radiation into less harmful infrared radiation or thermal energy. When the sunscreen product is applied to the skin, the water solvent is volatilized, some water-soluble components are locked in the film, ultraviolet rays can penetrate through the windows to reach the skin, and the windows can be closed by adding the water-soluble sunscreen agent to the formula, so that the protection of the ultraviolet rays is perfected, and the SPF value is increased. The highest addition amount limited by domestic regulations is 8 percent;
4-methylbenzylidenecamphor: the sun-screening agent mainly used for protecting ultraviolet UVB has good light stability, and the highest addition amount limited by domestic regulations is 4%.
Hydrophobization treatment of the composite titanium dioxide: two types of titanium dioxide with different particle sizes are selected for compounding, reflection and scattering of ultraviolet rays in a long wave region and absorption of ultraviolet rays in a medium wave region are achieved, and formula fusion degree and use skin feeling are improved. The composite titanium dioxide is compounded by CR-50 AS titanium dioxide with the particle size of 200-300 nanometers and MT-012 titanium dioxide with the particle size of 10-20 nanometers, wherein the content of the CR-50 AS titanium dioxide is 10-40 percent, and the content of the MT-012 titanium dioxide is 60-90 percent. Each initial particle of the CR-50 AS titanium dioxide is subjected to surface coating treatment by using 2% triethoxyoctylsilane through an OMC (organic polymer) process, so that excellent hydrophobicity, sweat resistance and grease resistance are highlighted, the surface waterproof performance is higher than that of powder treated by silicone oil, and the powder is easily dispersed in low-polarity grease; the MT-012 titanium dioxide is rutile type, has no whiteness, good oil absorption effect, and has the characteristics of good heat resistance, water resistance, difficult yellowing and light and thin skin feel.
The conventional cosmetic additive comprises one or more of the following emulsifiers, humectants, whitening agents and anti-allergic agents:
emulsifier: polyglycerol-3 diisostearate, PEG-10 polydimethylsiloxane, lauryl PEG-8 polydimethylsiloxane, cetyl PEG/PPG-10/1 polydimethylsiloxane, PEG-30 dipolyhydroxystearate, sorbitan sesquioleate;
humectant: glycerin, propylene glycol, sodium hyaluronate, trehalose, erythritol, betaine, methyl glucitol polyether-20, and ALOE vera (ALOE BARBADENSIS) extract;
whitening agent: niacinamide, Tilia CORDATA flower extract, Glycyrrhiza GLABRA (Glycyrrhiza GLABRA) root extract;
nicotinamide: alias vitamin B3 and vitamin PP. Nicotinamide can accelerate cell metabolism, promote the exfoliation of melanocytes containing melanin, and improve skin pigmentation caused by ultraviolet irradiation; in addition, the niacinamide also has the functions of moisturizing, improving the skin barrier function and reducing the damage of ultraviolet rays to the skin;
extract of TILIA europea (TILIA cordiata) flowers: the main functions of the composition in cosmetics and skin care products are sunscreen, antioxidant and whitening agent. Tilia europea (Tilia CorDATA) flower extract has tyrosinase inhibiting effect in melanocyte culture, and has whitening effect on skin darkened by ultraviolet irradiation; inhibition of two metalloproteinases, inhibition of caspase, inhibition of elastase and activation of cathepsin show that it can enhance skin cell metabolism and resist damage of ultraviolet rays to skin; the skin moisturizer can be used for moisturizing dry skin and enabling the skin to be fine and smooth and to be rich in elasticity by combining the excellent moisturizing performance of the skin moisturizer; animal experiments show that it has photoprotective effect and can be used for sunscreen cosmetics;
GLYCYRRHIZA GLABRA (GLYCYRRHIZA GLABRA) root extract: the skin-whitening essence mainly comprises the components of glabrene and glabridin, is called whitening gold, can penetrate into the skin, keeps high activity, effectively inhibits the activity of various enzymes (such as tyrosinase) in the melanin generation process, and is a quick, efficient, safe and green sun-screening, whitening and freckle-removing cosmetic additive;
anti-allergic agent: dipotassium glycyrrhizinate, bisabolol, radix Gentianae (GENTIANA SCABRA) extract, flos Matricariae Chamomillae (CHAMOMILLA RECUTITA) extract, herba Asplenii Incisi (Cardiospermum halicaceum) flower/leaf/vine extract, and herba Portulacae (Portulaca OLERACEA) extract.
Further, the sunscreen skin care product containing the composite titanium dioxide is characterized by comprising 2% of ethylhexyl methoxycinnamate, 1% of diethylamino hydroxybenzoyl hexyl benzoate, 1% of phenyl benzimidazole sulfonic acid, 0.5% of 4-methylbenzylidene camphor, 4% of hydrophobization treatment composite titanium dioxide, and the balance of 3% of an emulsifier, 5% of isododecane, 1% of C12-15 alcohol benzoate, 1% of cyclopenta dimethyl siloxane, 0.2% of octyl methyl siloxane, 0.2% of bentonite, 5% of a water phase component, 0.5% of a whitening agent, 0.5% of 1, 2-hexanediol, 0.5% of an anti-sensitivity agent, 0.3% of phenoxyethanol, and the balance of water.
Further, the sunscreen skin care product containing the composite titanium dioxide is characterized in that the sunscreen skin care product comprises 9% of ethylhexyl methoxycinnamate, 5% of diethylamino hydroxybenzoyl hexyl benzoate, 4% of phenyl benzimidazole sulfonic acid, 3% of 4-methylbenzylidene camphor, 10% of hydrophobization treatment composite titanium dioxide, 6% of emulsifier, 15% of isododecane, 5% of C12-15 alcohol benzoate, 5% of cyclopenta dimethyl siloxane, 2% of octyl methyl siloxane and 2% of bentonite, and the water phase components comprise 20% of humectant, 2% of whitening agent, 2% of 1, 2-hexanediol, 2% of anti-sensitivity agent, 0.8% of phenoxyethanol and the balance of water.
Further, the sunscreen skin care product containing the composite titanium dioxide is characterized by comprising 7% of ethylhexyl methoxycinnamate, 3% of diethylamino hydroxybenzoyl hexyl benzoate, 2% of phenyl benzimidazole sulfonic acid, 2% of 4-methylbenzylidene camphor, 6% of hydrophobization treatment composite titanium dioxide, 4% of emulsifier, 10% of isododecane, 3% of C12-15 alcohol benzoate, 3% of cyclopenta dimethyl siloxane, 1% of octyl methyl siloxane and 0.2% of bentonite, wherein the water phase components comprise 10% of humectant, 1% of whitening agent, 0.5% of 1, 2-hexanediol, 1% of anti-sensitivity agent, 0.5% of phenoxyethanol and the balance of water.
The sunscreen skin care product can be obtained by mixing the above functional substances with conventional cosmetic additives in the field according to the proportion provided by the invention.
The invention solves another technical problem by providing a preparation method of a sunscreen skin care product containing composite titanium dioxide, which comprises the following steps:
1. mixing C12-15 alcohol benzoate, octyl polymethylsiloxane and composite titanium dioxide, and grinding and dispersing for 3 times by using a three-roller machine to grind uniformly;
2. adding ethylhexyl methoxycinnamate, hexyl diethylamino hydroxybenzoyl benzoate, phenylbenzimidazole sulfonic acid, 4-methylbenzylidene camphor, an emulsifier, isododecane, cyclopentadecyldimethyl siloxane, bentonite and dispersed composite titanium dioxide into an emulsifying pot, stirring and heating to 80 ℃ until a material body is completely dissolved;
3. adding water, humectant and 1, 2-hexanediol into a water kettle, stirring and heating to 80 ℃;
4. quickly stirring the emulsifying pot, starting a homogenizing and dispersing machine (the rotating speed is 45 r/s), slowly pumping the materials in the water pot into the emulsifying pot (a valve is opened 1/3), emulsifying and homogenizing for 5 minutes;
5. cooling by boiling cooling water;
6. cooling to 45 deg.C, adding whitening agent, anti-allergy agent, and phenoxyethanol, homogenizing and dispersing (rotation speed 45 r/s), emulsifying and homogenizing for 2 min;
7. stirring uniformly to obtain the sunscreen skin care product.
The invention has the beneficial effects that: the formula is matched with the two composite titanium dioxide physical sun-screening agents with different particle sizes, so that the ultraviolet rays can be reflected and refracted, and also can be absorbed, and the protection range is enlarged; the method not only can meet the development requirement of high SPF value sunscreen products, but also can provide light, thin and non-greasy skin feeling. And the sunscreen product can provide full-wave-band protection and repair, prevent and treat skin photoaging, improve the darkened skin caused by ultraviolet irradiation, resist the damage of ultraviolet rays to the skin, and has the sunscreen and whitening effects and fresh skin feeling.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1: the sunscreen agent comprises the following components in percentage by mass: 9% of ethylhexyl methoxycinnamate, 1% of diethylamino hydroxybenzoyl hexyl benzoate, 2% of phenylbenzimidazole sulfonic acid, 1% of 4-methylbenzylidene camphor, 10% of hydrophobic treatment composite titanium dioxide, and the balance of emulsifier, 15% of isododecane, 5% of C12-15 alcohol benzoate, 5% of cyclopenta dimethyl siloxane, 0.2% of octyl methyl siloxane, 2% of bentonite, wherein the water phase component comprises 20% of humectant, 0.5% of whitening agent, 1, 2-hexanediol, 2% of anti-sensitivity agent, 0.8% of phenoxyethanol, and the balance of water.
The results (theoretical values) were calculated according to DSM sun protection index simulations: sun protection factor SPF =46.8, PA + + +, UV filtration efficiency (SPF/% UV Filter)2.0, UV protection/attenuation graph from DSM website simulation, as shown in figure 1.
Example 2: the sunscreen agent comprises the following components in percentage by mass: 5% of ethylhexyl methoxycinnamate, 3% of diethylamino hydroxybenzoyl hexyl benzoate, 4% of phenylbenzimidazole sulfonic acid, 3% of 4-methylbenzylidene camphor, 4% of hydrophobization treatment composite titanium dioxide, and the balance of 3% of emulsifier, 5% of isododecane, 1% of C12-15 alcohol benzoate, 1% of cyclopenta dimethyl siloxane, 2% of octyl methyl siloxane and 1% of bentonite, wherein the water phase component comprises 5% of humectant, 1% of whitening agent, 2% of 1, 2-hexanediol, 0.2% of anti-sensitivity agent, 0.5% of phenoxyethanol and the balance of water.
The results (theoretical values) were calculated according to DSM sun protection index simulations: sun protection factor SPF =45.1, PA + + +, UV filtration efficiency (SPF/% UV Filter)2.4, UV protection/attenuation graph from DSM website simulation, as shown in fig. 2.
Example 3: the sunscreen agent comprises the following components in percentage by mass: 8% of ethylhexyl methoxycinnamate, 2% of diethylamino hydroxybenzoyl hexyl benzoate, 3% of phenyl benzimidazole sulfonic acid, 2% of 4-methylbenzylidene camphor, 6% of hydrophobization treatment composite titanium dioxide, and the balance of emulsifier 4%, isododecane 14%, C12-15 alcohol benzoate 4%, cyclopenta dimethyl siloxane 4%, octyl methyl siloxane 1%, and bentonite 0.3%, wherein the water phase component comprises 10% of humectant, 2% of whitening agent, 0.5% of 1, 2-hexanediol, 1% of anti-sensitivity agent, 0.4% of phenoxyethanol, and the balance of water.
The results (theoretical values) were calculated according to DSM sun protection index simulations: sun protection factor SPF =45.7, PA + + +, UV filtration efficiency (SPF/% UV Filter)2.2, UV protection/attenuation graph simulated by DSM website, as shown in fig. 3.
Uv filtration efficiency is the ratio of SPF to total uv filtration concentration (expressed as a percentage). The higher this value, the less sunscreen agent is used to achieve the desired SPF value. The UV protection/attenuation chart obtained by DSM website simulation can show that the efficiency of different sun-screening agents collocated before and after sunlight irradiation has no large change, and the sun-screening agent has better protection effect.
Test sample sunscreen efficacy testing:
the test method comprises the following steps: the samples of examples 1,2 and 3 were tested according to the sun protection cosmetic sun protection factor (SPF value) measurement method and the sun protection cosmetic long-wave ultraviolet protection factor (PFA value) measurement method in the test method for evaluating efficacy of human body in technical specification for safety of cosmetics (2015 edition).
The subject claims: selecting 30 healthy volunteers of 20-40 years old, and dividing into 3 groups of 10 persons; no history of the photosensitive disease is required, and medicines influencing the photosensitivity are not used in the near term; the skin of the subject should be free of pigmentation, inflammation, scarring, pigmented nevi, hirsutism, and the like.
SPF value determination: selecting a normal skin area on the back of a subject, irradiating 5 points with different doses of ultraviolet rays, observing the skin condition after 24 hours, and taking the lowest irradiation dose of erythema on the skin as the Minimum Erythema Dose (MED) value of the normal skin of the subject. Selecting a normal skin area of not less than 30cm on the back of the subject, uniformly smearing the experimental sample and the standard control in the test area according to the sample dosage of (2.00 ± 0.05) mg/cm, selecting an appropriate ultraviolet irradiation dose, irradiating in three cases: the skin of the subject is not coated with the sample, the skin of the subject is coated with the standard sample, and the skin of the subject is coated with the sample to be detected. The standard control is a high SPF standard (P2), and the SPF is 16.1 ± 2.4. And observing the skin condition of the test area of the test subject after 24h of irradiation, respectively recording the MED value of each test subject, and calculating the SPF value. Individual SPF ═ MED value of sample protected skin/MED value of unprotected skin. The SPF values of the test samples are the average of 10 subjects.
PFA value determination: selecting a normal skin area on the back of the subject for irradiation, predicting the minimum blackening amount (MPPD value) of the skin of the subject to ultraviolet irradiation 24h before the sample test, and adjusting the ultraviolet irradiation amount according to the prediction result for testing the sample. Selecting a normal skin area of not less than 30cm on the back of the subject, uniformly smearing the experimental sample and the standard control in the test area according to the sample dosage of (2.00 ± 0.05) mg/cm, selecting an appropriate ultraviolet irradiation dose, irradiating in three cases: the skin of the subject is not coated with the sample, the skin of the subject is coated with the standard sample, and the skin of the subject is coated with the sample to be detected. The PFA value of the standard was 4.4. + -. 0.6. After 30 minutes of irradiation, the skin condition of the test area of the subject was observed, the MPPD value of each subject was recorded, and the PFA value was calculated. PFA-MPPD value of skin protected by the test product/MPPD value of unprotected skin. The PFA values of the test samples were the average of 10 subjects.
And (3) testing results: the sunscreen efficacy test results are shown in figure 4.
As can be seen from fig. 4, the sunscreen skin care products with different matching proportions can meet daily sunscreen or high-power sunscreen requirements, and the SPF value and PFA value of examples 1,2, and 3 both show good sunscreen efficacy, which is higher than the theoretical calculation value and far better than the SPF value and PFA value of the standard.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (8)
1. The sunscreen skin care product containing the composite titanium dioxide comprises a sunscreen agent and a water phase component, and is characterized in that: the sunscreen agent and the water phase component comprise the following components in percentage by mass:
2-9% of ethylhexyl methoxycinnamate, 1-5% of diethylamino hydroxybenzoyl hexyl benzoate, 1-4% of phenylbenzimidazole sulfonic acid, 0.5-3% of 4-methylbenzylidene camphor, 4-10% of hydrophobization treatment composite titanium dioxide, 3-6% of an emulsifier, 5-15% of isododecane, 1-5% of C12-15 alcohol benzoate, 1-5% of cyclopenta dimethyl siloxane, 0.2-2% of octyl polymethyl siloxane and 0.2-2% of bentonite, wherein the water phase component comprises 5-20% of a humectant, 0.5-2% of 1, 2-hexanediol, 0.5-2% of a whitening agent, 0.5-2% of an anti-allergic agent, 0.3-0.8% of phenoxyethanol and the balance of water.
2. The sun-screening skin care product containing the composite titanium dioxide according to claim 1, characterized in that:
the hydrophobization treatment composite titanium dioxide is compounded by CR-50 AS titanium dioxide with the particle size of 200-300 nanometers and MT-012 titanium dioxide with the particle size of 10-20 nanometers, wherein the content of the CR-50 AS titanium dioxide is 10-40 percent, and the content of the MT-012 titanium dioxide is 60-90 percent.
3. The sun-screening skin care product containing the composite titanium dioxide according to claim 1, characterized in that:
the components are one or a mixture of more of an emulsifier, a humectant, a whitening agent and an anti-allergy agent:
emulsifier: polyglycerol-3 diisostearate, PEG-10 polydimethylsiloxane, lauryl PEG-8 polydimethylsiloxane, cetyl PEG/PPG-10/1 polydimethylsiloxane, PEG-30 dipolyhydroxystearate, sorbitan sesquioleate;
humectant: glycerin, propylene glycol, sodium hyaluronate, trehalose, erythritol, betaine, methyl glucitol polyether-20, and ALOE vera (ALOE BARBADENSIS) extract;
whitening agent: niacinamide, Tilia CORDATA flower extract, Glycyrrhiza GLABRA (Glycyrrhiza GLABRA) root extract;
anti-allergic agent: dipotassium glycyrrhizinate, bisabolol, radix Gentianae (GENTIANA SCABRA) extract, flos Matricariae Chamomillae (CHAMOMILLA RECUTITA) extract, herba Asplenii Incisi (Cardiospermum halicaceum) flower/leaf/vine extract, and herba Portulacae (Portulaca OLERACEA) extract.
4. The sunscreen skin care product containing composite titanium dioxide according to claim 1, wherein the sunscreen skin care product comprises 2% ethylhexyl methoxycinnamate, 1% hexyl diethylamino hydroxybenzoyl benzoate, 1% phenylbenzimidazole sulfonic acid, 0.5% 4-methylbenzylidene camphor, 4% hydrophobized composite titanium dioxide, 3% emulsifier, 5% isododecane, 1% C12-15 alcohol benzoate, 1% cyclopenta dimethyl siloxane, 0.2% octyl methyl siloxane, 0.2% bentonite, 5% humectant in aqueous phase, 0.5% whitening agent, 0.5% 1, 2-hexanediol, 0.5% anti-sensitivity agent, 0.3% phenoxyethanol, and the balance of water.
5. The sunscreen skin care product containing composite titanium dioxide according to claim 1, wherein the sunscreen skin care product comprises ethylhexyl methoxycinnamate 9%, diethyl aminooxybenzoyl hexyl benzoate 5%, phenylbenzimidazole sulfonic acid 4%, 4-methylbenzylidene camphor 3%, hydrophobized composite titanium dioxide 10%, the balance of emulsifier 6%, isododecane 15%, C12-15 alcohol benzoate 5%, cyclopenta dimethyl siloxane 5%, octyl methyl siloxane 2%, bentonite 2%, the water phase component comprises humectant 20%, whitening agent 2%, 1, 2-hexanediol 2%, anti-sensitivity agent 2%, phenoxyethanol 0.8%, and the balance of water.
6. The sunscreen skin care product containing composite titanium dioxide according to claim 1, wherein the sunscreen skin care product comprises ethylhexyl methoxycinnamate 7%, hexyl diethylamino hydroxybenzoyl benzoate 3%, phenylbenzimidazole sulfonic acid 2%, 4-methylbenzylidene camphor 2%, hydrophobized composite titanium dioxide 6%, the balance of emulsifier 4%, isododecane 10%, C12-15 alcohol benzoate 3%, cyclopenta dimethyl siloxane 3%, octyl methyl siloxane 1%, bentonite 0.2%, the water phase component comprises humectant 10%, whitening agent 1%, 1, 2-hexanediol 0.5%, anti-sensitivity agent 1%, phenoxyethanol 0.5%, and the balance of water.
7. A preparation method of a sunscreen skin care product containing composite titanium dioxide comprises the following steps:
(1) mixing C12-15 alcohol benzoate, octyl polymethylsiloxane and composite titanium dioxide;
(2) adding ethylhexyl methoxycinnamate, hexyl diethylamino hydroxybenzoyl benzoate, phenylbenzimidazole sulfonic acid, 4-methylbenzylidene camphor, an emulsifier, isododecane, cyclopentadimethylsiloxane, bentonite and dispersed composite titanium dioxide into an emulsifying pot, and stirring and heating until the materials are completely dissolved;
(3) adding water, humectant and 1, 2-hexanediol into a water kettle, stirring and heating;
(4) quickly stirring in an emulsifying pot, and slowly pumping the materials in the water pot into the emulsifying pot for emulsification;
(5) cooling by boiling cooling water;
(6) cooling, adding whitening agent, anti-allergy agent, and phenoxyethanol, and emulsifying;
(7) stirring uniformly to obtain the sunscreen skin care product.
8. The preparation method of the sunscreen skin care product containing the composite titanium dioxide according to claim 7 is characterized in that:
the mixing in the step (1) is to use a three-roller machine to grind and disperse for 3 times and grind evenly;
the dissolving condition in the step (2) is that the mixture is stirred and heated to 80 ℃ until the material body is completely dissolved;
the emulsification condition in the step (4) is to start homogenizing and dispersing (the rotating speed is 45 r/s), slowly pump the water pot material into an emulsification pot (a valve is opened 1/3), emulsify and homogenize for 5 minutes;
and (4) the emulsification condition in the step (6) is that the temperature is reduced to 45 ℃, the mixture is opened to be homogenized and dispersed (the rotating speed is 45 r/s), and the emulsification and homogenization are carried out for 2 minutes.
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