CN117959212A - Physical sun cream and preparation method thereof - Google Patents
Physical sun cream and preparation method thereof Download PDFInfo
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- CN117959212A CN117959212A CN202410019702.8A CN202410019702A CN117959212A CN 117959212 A CN117959212 A CN 117959212A CN 202410019702 A CN202410019702 A CN 202410019702A CN 117959212 A CN117959212 A CN 117959212A
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- polydimethylsiloxane
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- 239000000516 sunscreening agent Substances 0.000 title claims abstract description 100
- 238000002360 preparation method Methods 0.000 title description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 52
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 46
- TXFPEBPIARQUIG-UHFFFAOYSA-N 4'-hydroxyacetophenone Chemical compound CC(=O)C1=CC=C(O)C=C1 TXFPEBPIARQUIG-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011787 zinc oxide Substances 0.000 claims abstract description 23
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 13
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 13
- 239000003974 emollient agent Substances 0.000 claims abstract description 7
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims abstract description 7
- 239000003906 humectant Substances 0.000 claims abstract description 7
- 239000002562 thickening agent Substances 0.000 claims abstract description 7
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 73
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 73
- -1 polydimethylsiloxane Polymers 0.000 claims description 71
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 27
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 21
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical group [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- MSRJTTSHWYDFIU-UHFFFAOYSA-N octyltriethoxysilane Chemical compound CCCCCCCC[Si](OCC)(OCC)OCC MSRJTTSHWYDFIU-UHFFFAOYSA-N 0.000 claims description 18
- 229960003493 octyltriethoxysilane Drugs 0.000 claims description 18
- 230000001804 emulsifying effect Effects 0.000 claims description 12
- 229940015975 1,2-hexanediol Drugs 0.000 claims description 9
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 claims description 9
- DTPCFIHYWYONMD-UHFFFAOYSA-N decaethylene glycol Chemical compound OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO DTPCFIHYWYONMD-UHFFFAOYSA-N 0.000 claims description 9
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 9
- 235000011187 glycerol Nutrition 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- XJNUECKWDBNFJV-UHFFFAOYSA-N hexadecyl 2-ethylhexanoate Chemical group CCCCCCCCCCCCCCCCOC(=O)C(CC)CCCC XJNUECKWDBNFJV-UHFFFAOYSA-N 0.000 claims description 9
- FHKSXSQHXQEMOK-UHFFFAOYSA-N hexane-1,2-diol Chemical compound CCCCC(O)CO FHKSXSQHXQEMOK-UHFFFAOYSA-N 0.000 claims description 9
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 9
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 9
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- YZUUTMGDONTGTN-UHFFFAOYSA-N nonaethylene glycol Chemical compound OCCOCCOCCOCCOCCOCCOCCOCCOCCO YZUUTMGDONTGTN-UHFFFAOYSA-N 0.000 claims description 7
- IUMSDRXLFWAGNT-UHFFFAOYSA-N Dodecamethylcyclohexasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 IUMSDRXLFWAGNT-UHFFFAOYSA-N 0.000 claims description 6
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000004090 dissolution Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 claims description 3
- YCCILVSKPBXVIP-UHFFFAOYSA-N 2-(4-hydroxyphenyl)ethanol Chemical group OCCC1=CC=C(O)C=C1 YCCILVSKPBXVIP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 18
- 230000037072 sun protection Effects 0.000 abstract description 11
- 239000006071 cream Substances 0.000 abstract description 10
- 230000002195 synergetic effect Effects 0.000 abstract description 5
- 230000002087 whitening effect Effects 0.000 abstract description 4
- 230000000622 irritating effect Effects 0.000 abstract 1
- 230000000475 sunscreen effect Effects 0.000 description 24
- 239000002537 cosmetic Substances 0.000 description 15
- 238000012360 testing method Methods 0.000 description 14
- 239000000126 substance Substances 0.000 description 11
- 235000006708 antioxidants Nutrition 0.000 description 9
- 238000012216 screening Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 230000007794 irritation Effects 0.000 description 5
- 206010015150 Erythema Diseases 0.000 description 4
- 206010040914 Skin reaction Diseases 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 231100000321 erythema Toxicity 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000035483 skin reaction Effects 0.000 description 4
- 231100000430 skin reaction Toxicity 0.000 description 4
- 206010030113 Oedema Diseases 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008591 skin barrier function Effects 0.000 description 3
- PLRXBMPPQBKJQV-UHFFFAOYSA-N 1,3-bis(4-hydroxyphenyl)propan-2-one Chemical compound C1=CC(O)=CC=C1CC(=O)CC1=CC=C(O)C=C1 PLRXBMPPQBKJQV-UHFFFAOYSA-N 0.000 description 2
- MVNVIVWSAFEIII-UHFFFAOYSA-N 1-(4-hydroxyphenyl)ethanone Chemical compound CC(=O)C1=CC=C(O)C=C1.CC(=O)C1=CC=C(O)C=C1 MVNVIVWSAFEIII-UHFFFAOYSA-N 0.000 description 2
- 229940073735 4-hydroxy acetophenone Drugs 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- 206010033733 Papule Diseases 0.000 description 2
- 230000006750 UV protection Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000008406 cosmetic ingredient Substances 0.000 description 2
- 230000002354 daily effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000005808 skin problem Effects 0.000 description 2
- ANZUDYZHSVGBRF-UHFFFAOYSA-N 3-ethylnonane-1,2,3-triol Chemical compound CCCCCCC(O)(CC)C(O)CO ANZUDYZHSVGBRF-UHFFFAOYSA-N 0.000 description 1
- 208000002874 Acne Vulgaris Diseases 0.000 description 1
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 208000012641 Pigmentation disease Diseases 0.000 description 1
- 229930003268 Vitamin C Natural products 0.000 description 1
- 206010000496 acne Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 229940008099 dimethicone Drugs 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000000774 hypoallergenic effect Effects 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
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- 231100000956 nontoxicity Toxicity 0.000 description 1
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- UWJJYHHHVWZFEP-UHFFFAOYSA-N pentane-1,1-diol Chemical compound CCCCC(O)O UWJJYHHHVWZFEP-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 208000017520 skin disease Diseases 0.000 description 1
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- 230000008491 skin homeostasis Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
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Abstract
The invention discloses a physical sun cream which comprises the following components in percentage by mass: 16 to 26 percent of physical sun-screening agent, 14.6 to 38 percent of humectant, 13.9 to 50 percent of emulsifier, 4 to 12 percent of emollient, 1 to 10 percent of thickener, 0.1 to 2 percent of filler, 0.1 to 2 percent of antioxidant and the balance of water. After the physical sun cream zinc oxide and titanium dioxide are combined with the antioxidant p-hydroxyacetophenone, the physical sun cream zinc oxide and titanium dioxide have synergistic effect in sun protection, and unexpected technical effects are generated; the skin feel is very good after the use, and the skin-care cream is fresh, not greasy, not dry and irritative, and has no obvious whitening.
Description
Technical Field
The invention belongs to the technical field of cosmetics, and particularly relates to physical sun cream and a preparation method thereof.
Background
Skin barriers include microbial, physical, chemical, pigment, neural, and immune barriers, the formation of which plays an extremely important role in the maintenance of skin health and homeostasis, skin barrier damage being a key causative and common accompanying symptoms of certain skin disorders.
In daily life, people can contact ultraviolet rays brought by sunlight every day, and a proper amount of ultraviolet rays are beneficial to human health, but skin and eyes can be damaged after long-term exposure to ultraviolet rays, skin problems such as skin relaxation and aging, skin pigmentation, long color spots and the like can be caused when sun is sunk in a daily and monthly manner, and skin inflammation, burn and even canceration can be caused seriously. Therefore, in order to maintain healthy and beautiful skin, people should take sunproof measures.
Common sun protection measures are mainly blocking or absorbing long-wave Ultraviolet (UVA) and medium-wave Ultraviolet (UVB) which are relatively harmful to human skin. In recent years, many sun-screening cosmetics have appeared on the market, and these products are added with physical sun-screening agents capable of blocking, reflecting or scattering ultraviolet rays, or chemical sun-screening agents capable of absorbing ultraviolet rays, so as to achieve the purpose of protecting skin and prevent skin from tanning, damage and aging. The existing sun-proof cosmetics comprise two systems of water-in-oil and oil-in-water, wherein the water-in-oil sun-proof cosmetics have good waterproof effect, but have thick and greasy skin feel and smoldering skin feel. The oil-in-water type sun-proof cosmetic has light and comfortable skin feel, is easy to push away paste, has better use feel, and is easy to clean after use.
At present, most of the sun-screening cosmetics on the market are chemical sun-screening agents and physical sun-screening agents combined to improve sun-screening effect. However, the addition of physical sunscreens to general cosmetics can result in a heavy skin feel, and the skin is whitened and pseudo-whitened after use, and is not easy to be uniformly smeared; in addition, the cleansing agent needs to be cleaned fully after use, otherwise, physical sunscreens may remain on the skin, causing skin problems such as pore blocking, acne growth, and closed mouth growth. The chemical sun-screening agent has strong ultraviolet absorption effect and wider protection range, and can convert the absorbed ultraviolet radiation into infrared radiation or heat energy, so most sun-screening cosmetics are added with the chemical sun-screening agent, but the addition of the chemical sun-screening agent can have a certain influence on the health of a human body. In addition, the skin barrier is damaged, so that the cuticle is dry and fragile, intercellular lipid is reduced, and the use effect of the sun cream on the market is reduced.
To solve various problems of the current sunscreen cosmetics on the market, those skilled in the relevant art are continuously trying to develop new product systems, and there is a need for a physical sunscreen composition with better sunscreen effect.
Disclosure of Invention
In order to overcome various problems of the existing sun cream, the inventor explores different methods, screens different cosmetic ingredients widely, and unexpectedly discovers that after combining physical sun cream zinc oxide and titanium dioxide with antioxidant p-hydroxyacetophenone, the physical sun cream zinc oxide and titanium dioxide have synergistic effect in sun protection, and unexpected technical effects are generated. Based on the findings, the present invention provides the following technical solutions.
The first aspect of the invention provides a physical sun cream, which comprises the following components in percentage by mass:
16 to 26 percent of physical sun-screening agent, 14.6 to 38 percent of humectant, 13.9 to 50 percent of emulsifier, 4 to 12 percent of emollient, 1 to 10 percent of thickener, 0.1 to 2 percent of filler, 0.1 to 2 percent of antioxidant and the balance of water.
In one or more embodiments, the physical sunscreens are a combination of zinc oxide and titanium dioxide.
In one or more embodiments, the humectant is selected from one or more of propylene glycol, glycerin, butylene glycol, and 1, 2-hexanediol.
In one or more embodiments, the emulsifier is selected from one or more of polydimethylsiloxane, PEG-10 polydimethylsiloxane, triethoxy octylsilane, polyglycerol-3 polydimethylsiloxane hydroxyethyl polydimethylsiloxane, cyclopentadimethicone, cyclohexasiloxane, triethoxy octylsilane, PEG-9 polydimethylsiloxane ethyl polydimethylsiloxane, silica, and cetyl PEG/PPG-10/1 polydimethylsiloxane.
In one or more embodiments, the emollient is polydimethylsiloxane.
In one or more embodiments, the thickener is cetyl ethylhexanoate.
In one or more embodiments, the filler is magnesium sulfate.
In one or more embodiments, the antioxidant is p-hydroxyphenylethanol.
Preferably, the physical sun cream disclosed by the invention consists of the following A, B and C components:
The component A comprises the following components in percentage by mass of the physical sun cream: 10-16% of zinc oxide, 10-15% of polydimethylsiloxane, 1-3% of PEG-10 polydimethylsiloxane, 0.1-2% of triethoxy octyl silane, 0.1-2% of polyglycerol-3 polydimethylsiloxane hydroxyethyl polydimethylsiloxane, 4-10% of titanium dioxide, 1-8% of cyclopenta-dimethylsiloxane, 1-5% of cyclohexyl siloxane, 0.1-2% of triethoxy octyl silane, 0.05-4% of PEG-9 polydimethylsiloxane ethyl polydimethylsiloxane, 0.05-3% of silica, 4-12% of polydimethylsiloxane, 1-10% of cetyl ethyl hexanoate and 0.5-6% of cetyl PEG/PPG-10/1 polydimethylsiloxane;
The component B comprises the following components in percentage by mass of the physical sun cream: glycerol 1-10%, propylene glycol 13-20%, magnesium sulfate 0.1-2% and water in balance;
The component C comprises the following components in percentage by mass of the physical sun cream: 0.5 to 6 percent of butanediol, 0.1 to 2 percent of 1, 2-hexanediol and 0.1 to 2 percent of p-hydroxyacetophenone.
A second aspect of the present invention provides a method of preparing the above physical sunblocks, the method comprising the steps of:
(1) Adding the components A into an emulsifying pot according to a proportion, heating to 80-85 ℃, and uniformly stirring for later use after complete dissolution;
(2) The component B is put into a water boiler according to a proportion, stirred and heated to 80-85 ℃ for standby;
(3) Pumping the components in the water pot in the step (2) into the emulsifying pot in the step (1), stirring and homogenizing for 5 minutes, and cooling;
(4) And when the temperature is reduced to 45 ℃, adding the component C in proportion, and uniformly stirring to obtain the physical sun cream.
Compared with the prior art, the invention has the following advantages:
(1) The formula of the invention is purely physical sun protection, the physical sun protection creams are effective once being smeared, and the chemical sun protection creams have good protection on UVA and UVB rays, and after being smeared on skin, the chemical sun protection creams can reach the deep layer of the skin and take effect after about 20 minutes.
(2) The physical sunscreens of the present invention have higher photostability to uv filters than chemical sunscreens, which means that they retain their protective quality under uv irradiation for a longer period of time.
(3) The physical sunscreens of the present invention are more favored by skin-sensitive individuals because they do not convert ultraviolet radiation into heat and are less likely to cause irritation.
(4) The formula of the invention is a water-in-oil formula, has good waterproof property, light and thin skin feel and is not greasy, and can be refreshing and not greasy after being used.
Detailed Description
In order to overcome various problems of the existing sun cream, the inventor explores different methods, screens different cosmetic ingredients widely, and unexpectedly discovers that after combining physical sun cream zinc oxide and titanium dioxide with antioxidant p-hydroxyacetophenone, the physical sun cream zinc oxide and titanium dioxide have synergistic effect in sun protection, and unexpected technical effects are generated. Based on the findings, the present invention provides the following technical solutions.
Zinc oxide is an important and widely used physical sunscreen agent and the principle of screening ultraviolet light is absorption and scattering. Zinc oxide belongs to an N-type semiconductor, and electrons in the valence band can accept energy in ultraviolet rays to undergo transition, which is also the principle that they absorb ultraviolet rays. The function of scattering ultraviolet rays is related to the particle size of the material, and when the size is far smaller than the wavelength of ultraviolet rays, the particles can scatter the ultraviolet rays acting on the particles in all directions, so that the ultraviolet ray intensity in the irradiation direction is reduced. However, in the actual use, if the particle size of the raw material is too large, unnatural whitening phenomenon occurs when the raw material is applied to the skin.
Titanium dioxide is an inorganic component, has excellent chemical stability, thermal stability, non-migration, strong decolorizing power, strong covering power, low corrosiveness, good dispersivity, no toxicity, no smell, no irritation, safe use and sterilization and deodorization effects. More importantly, the titanium dioxide can absorb ultraviolet rays and emit and scatter the ultraviolet rays, so that the ultraviolet resistance is high, and compared with the organic ultraviolet resistance agent with the same dosage, the titanium dioxide has higher absorption peak in the ultraviolet region; and titanium dioxide has a blocking effect on ultraviolet rays in a medium wave region and a long wave region, unlike an organic anti-ultraviolet agent which only has a shielding effect on ultraviolet rays in a medium wave region or a long wave region. Because of this, titanium dioxide is widely regarded as a physical shielding type ultraviolet inhibitor which is superior in performance in the current sun-screening cosmetics, and gradually replaces some organic ultraviolet inhibitors.
P-hydroxyacetophenone (English name p-Hydroxyacetophenone) is also known as 4-hydroxyacetophenone (4-Hydroxyacetophenone), 4-acetylphenol (4-Acetylphenol), p-acetylphenol (p-Acetylphenol), 4-hydroxyphenylmethyl ketone (4-hydroxyphenyl methyl ketone) and the like, has a certain oxidation resistance because of containing phenolic hydroxyl groups, is usually used as an antioxidant, but has a strong anti-corrosion effect, is also usually used as an anti-corrosion synergist (usually used together with hexanediol, pentanediol, octanediol, ethylhexyl glycerol and the like to replace the traditional preservative), and has excellent stability in high and low pH and temperature ranges.
Some existing physical sun-screening cosmetics have combined zinc oxide and titanium dioxide for use, although sun-screening effects are good, the addition of physical sun-screening agents to general cosmetics can cause thick skin feel, skin is whitened and pseudo-whitened after use, the application is not easy to be uniform, and the use feeling of consumers is seriously affected. The inventor of the present invention has unexpectedly found that, after combining physical sun cream zinc oxide and titanium dioxide with an antioxidant p-hydroxyacetophenone, not only the skin feel problem of the physical sun cream cosmetic after use can be overcome, but also the sun protection effect can be improved, and the combination of the three components can generate a synergistic effect. Based on the above, the invention provides the following specific schemes:
The first aspect of the invention provides a physical sun cream, which comprises the following components in percentage by mass:
16 to 26 percent of physical sun-screening agent, 14.6 to 38 percent of humectant, 13.9 to 50 percent of emulsifier, 4 to 12 percent of emollient, 1 to 10 percent of thickener, 0.1 to 2 percent of filler, 0.1 to 2 percent of antioxidant and the balance of water.
In one or more embodiments, the physical sunscreens are a combination of zinc oxide and titanium dioxide.
In one or more embodiments, the humectant is selected from one or more of propylene glycol, glycerin, butylene glycol, and 1, 2-hexanediol.
In one or more embodiments, the emulsifier is selected from one or more of polydimethylsiloxane, PEG-10 polydimethylsiloxane, triethoxy octylsilane, polyglycerol-3 polydimethylsiloxane hydroxyethyl polydimethylsiloxane, cyclopentadimethicone, cyclohexasiloxane, triethoxy octylsilane, PEG-9 polydimethylsiloxane ethyl polydimethylsiloxane, silica, and cetyl PEG/PPG-10/1 polydimethylsiloxane.
In one or more embodiments, the emollient is polydimethylsiloxane.
In one or more embodiments, the thickener is cetyl ethylhexanoate.
In one or more embodiments, the filler is magnesium sulfate.
In one or more embodiments, the antioxidant is p-hydroxyphenylethanol.
Preferably, the physical sun cream disclosed by the invention consists of the following A, B and C components:
The component A comprises the following components in percentage by mass of the physical sun cream: 10-16% of zinc oxide, 10-15% of polydimethylsiloxane, 1-3% of PEG-10 polydimethylsiloxane, 0.1-2% of triethoxy octyl silane, 0.1-2% of polyglycerol-3 polydimethylsiloxane hydroxyethyl polydimethylsiloxane, 4-10% of titanium dioxide, 1-8% of cyclopenta-dimethylsiloxane, 1-5% of cyclohexyl siloxane, 0.1-2% of triethoxy octyl silane, 0.05-4% of PEG-9 polydimethylsiloxane ethyl polydimethylsiloxane, 0.05-3% of silica, 4-12% of polydimethylsiloxane, 1-10% of cetyl ethyl hexanoate and 0.5-6% of cetyl PEG/PPG-10/1 polydimethylsiloxane;
The component B comprises the following components in percentage by mass of the physical sun cream: glycerol 1-10%, propylene glycol 13-20%, magnesium sulfate 0.1-2% and water in balance;
The component C comprises the following components in percentage by mass of the physical sun cream: 0.5 to 6 percent of butanediol, 0.1 to 2 percent of 1, 2-hexanediol and 0.1 to 2 percent of p-hydroxyacetophenone.
A second aspect of the present invention provides a method of preparing the above physical sunblocks, the method comprising the steps of:
(1) Adding the components A into an emulsifying pot according to a proportion, heating to 80-85 ℃, and uniformly stirring for later use after complete dissolution;
(2) The component B is put into a water boiler according to a proportion, stirred and heated to 80-85 ℃ for standby;
(3) Pumping the components in the water pot in the step (2) into the emulsifying pot in the step (1), stirring and homogenizing for 5 minutes, and cooling;
(4) And when the temperature is reduced to 45 ℃, adding the component C in proportion, and uniformly stirring to obtain the physical sun cream.
Examples
The present invention will be described in further detail with reference to specific examples. It should be understood that the following examples are illustrative of the present invention and are not intended to limit the scope of the present invention.
The experimental methods used in the embodiment of the invention are conventional methods unless otherwise specified.
Materials, reagents, and the like used in the examples of the present invention are commercially available unless otherwise specified.
The examples relate to the amounts, amounts and concentrations of various substances, wherein the percentages refer to percentages by mass unless otherwise specified.
Example 1: preparation of sunscreen cream #1
A physical sun cream is prepared from the following A, B and C:
The component A comprises the following components in percentage by mass of the physical sun cream: 10% of zinc oxide, 10% of polydimethylsiloxane, 3% of PEG-10 polydimethylsiloxane, 2% of triethoxyoctylsilane, 0.1% of polyglycerol-3-polydimethylsiloxane hydroxyethyl polydimethylsiloxane, 4% of titanium dioxide, 1% of cyclopenta-dimethicone, 5% of cyclohexasiloxane, 0.1% of triethoxyoctylsilane, 4% of PEG-9-polydimethylsiloxane ethyl polydimethylsiloxane, 0.05% of silica, 4% of polydimethylsiloxane, 10% of cetyl ethyl hexanoate and 0.5% of cetyl PEG/PPG-10/1 polydimethylsiloxane;
The component B comprises the following components in percentage by mass of the physical sun cream: glycerol 1%, propylene glycol 13%, magnesium sulfate 0.1%, and water the balance;
The component C comprises the following components in percentage by mass of the physical sun cream: 0.5% of butanediol, 0.1% of 1, 2-hexanediol and 0.1% of p-hydroxyacetophenone.
The preparation method of the physical sun cream comprises the following steps:
(1) Adding the components A into an emulsifying pot according to a proportion, heating to 80 ℃, and uniformly stirring for later use after complete dissolution;
(2) Proportionally adding the components B into a water pot, stirring and heating to 80 ℃ for later use;
(3) Pumping the components in the water pot in the step (2) into the emulsifying pot in the step (1), stirring and homogenizing for 5 minutes, and cooling;
(4) And when the temperature is reduced to 45 ℃, adding the component C in proportion, and stirring uniformly to obtain the physical sun cream #11.
Example 2: preparation of sunscreen cream #2
A physical sun cream is prepared from the following A, B and C:
The component A comprises the following components in percentage by mass of the physical sun cream: 13% of zinc oxide, 12% of polydimethylsiloxane, 2% of PEG-10 polydimethylsiloxane, 1% of triethoxyoctylsilane, 1% of polyglycerin-3-polydimethylsiloxane hydroxyethyl polydimethylsiloxane, 6% of titanium dioxide, 5% of cyclopentadimethicone, 3% of cyclohexasiloxane, 1% of triethoxyoctylsilane, 2% of PEG-9-polydimethylsiloxane ethyl polydimethylsiloxane, 2% of silica, 8% of polydimethylsiloxane, 6% of cetyl ethylhexanoate and 3% of cetyl PEG/PPG-10/1 polydimethylsiloxane;
the component B comprises the following components in percentage by mass of the physical sun cream: 5% of glycerin, 17% of propylene glycol, 1% of magnesium sulfate and the balance of water;
the component C comprises the following components in percentage by mass of the physical sun cream: 3% of butanediol, 1, 2-hexanediol, 1% of p-hydroxyacetophenone.
The preparation method of the physical sun cream comprises the following steps:
(1) Adding the components A into an emulsifying pot according to a proportion, heating to 82 ℃, and uniformly stirring for later use after complete dissolution;
(2) Proportionally adding the components B into a water boiler, stirring and heating to 83 ℃ for later use;
(3) Pumping the components in the water pot in the step (2) into the emulsifying pot in the step (1), stirring and homogenizing for 5 minutes, and cooling;
(4) And when the temperature is reduced to 45 ℃, adding the component C in proportion, and uniformly stirring to obtain the physical sun cream #2.
Example 3: preparation of sunscreen cream #3
A physical sun cream is prepared from the following A, B and C:
The component A comprises the following components in percentage by mass of the physical sun cream: 16% of zinc oxide, 15% of polydimethylsiloxane, 3% of PEG-10 polydimethylsiloxane, 0.1% of triethoxyoctylsilane, 2% of polyglycerol-3 polydimethylsiloxane hydroxyethyl polydimethylsiloxane, 10% of titanium dioxide, 1% of cyclopentadimethicone, 1% of cyclohexasiloxane, 0.1% of triethoxyoctylsilane, 4% of PEG-9 polydimethylsiloxane ethyl polydimethylsiloxane, 0.05% of silica, 4% of polydimethylsiloxane, 10% of cetyl ethyl hexanoate and 6% of cetyl PEG/PPG-10/1 polydimethylsiloxane;
the component B comprises the following components in percentage by mass of the physical sun cream: 10% of glycerin, 20% of propylene glycol, 0.1% of magnesium sulfate and the balance of water;
the component C comprises the following components in percentage by mass of the physical sun cream: 6% of butanediol, 2% of 1, 2-hexanediol and 2% of p-hydroxyacetophenone.
The preparation method of the physical sun cream comprises the following steps:
(1) Adding the components A into an emulsifying pot according to a proportion, heating to 85 ℃, and uniformly stirring for later use after complete dissolution;
(2) Proportionally adding the components B into a water boiler, stirring and heating to 85 ℃ for later use;
(3) Pumping the components in the water pot in the step (2) into the emulsifying pot in the step (1), stirring and homogenizing for 5 minutes, and cooling;
(4) And when the temperature is reduced to 45 ℃, adding the component C in proportion, and uniformly stirring to obtain the physical sun cream #3.
Comparative example 1: preparation of sunscreen cream #4
A physical sun cream is prepared from the following A, B and C components, and compared with example 2, the physical sun cream is characterized in that the same amount of oxidant vitamin C is used for replacing p-hydroxyacetophenone, and other components are identical. The preparation method of the physical sunblock is exactly the same as that of the example 2, and physical sunblock #4 is obtained.
Comparative example 2: preparation of sunscreen cream #5
A physical sun cream is prepared from the following A, B and C components, and is different from example 2 in that the same amount of zinc oxide is used for replacing titanium dioxide (i.e. the formula does not contain titanium dioxide), and other components are identical. The preparation method of the physical sunblock is exactly the same as that of the example 2, and physical sunblock #5 is obtained.
Comparative example 3: preparation of sunscreen cream #6
A physical sun cream is prepared from the following A, B and C components, and compared with example 2, the physical sun cream is characterized in that equal amount of titanium dioxide is used for replacing zinc oxide (namely, the formula does not contain zinc oxide), and other components are identical. The preparation method of the physical sunblock is exactly the same as that of the example 2, and physical sunblock #6 is obtained.
Detection example 1: product skin feel detection
The physical sunscreens #1, #2, #3 obtained in examples 1-3 and the physical sunscreens #4, #5, #6 obtained in comparative examples were used as samples for blind scoring.
The test items comprise fresh feel, greasy feel, dry feel, whitening feel and irritation feel, and each item is provided with a score of 1-10 points, wherein 1 point represents the worst effect and 10 points represent the best effect. And selecting 10 professionals to test skin feel of the samples, scoring each item, and finally taking average score.
The test results are shown in Table 1.
TABLE 1 skin feel test results for products
| Test item | Sample #1 | Sample #2 | Sample #3 | Sample #4 | Sample #5 | Sample #6 |
| Refreshing feeling | 9.8 | 9.9 | 9.6 | 9.5 | 9.6 | 9.6 |
| Greasy feel | 9.0 | 8.9 | 8.8 | 9.0 | 8.8 | 8.8 |
| Dry feel | 9.8 | 9.8 | 9.7 | 9.6 | 9.8 | 9.7 |
| Graying feel | 9.4 | 9.7 | 9.5 | 7.7 | 6.1 | 6.4 |
| Irritation feeling | 9.1 | 9.3 | 9.3 | 9.2 | 9.2 | 9.3 |
From the data, the physical sun cream disclosed by the invention has very good skin feel after being used, is fresh, is not greasy, is free from dryness and irritation, and has no obvious whitening feel compared with a comparative example.
Detection example 2: product sun-screening capability detection
Physical sunscreens #1, #2, #3 obtained in examples 1 to 3 and physical sunscreens #4, #5, #6 obtained in comparative examples were used AS samples, and were tested by reference to the human body method test of the cosmetic safety Specification, and the SPF value of the sunscreens was measured by a sun protection index tester (model: SPF 290 AS), and the higher the SPF value, the better the sun protection effect of the product was represented. The results are shown in Table 2.
Table 2 results of testing the sunscreen ability of the products
| Product(s) | Sample #1 | Sample #2 | Sample #3 | Sample #4 | Sample #5 | Sample #6 |
| SPF value | 45.2 | 46.4 | 46.1 | 38.3 | 31.8 | 32.3 |
The data show that the physical sun cream disclosed by the invention has excellent sun-proof effect, and zinc oxide and titanium dioxide have synergistic effect in sun-proof after being combined with the antioxidant p-hydroxyacetophenone, so that unexpected technical effects are generated.
Detection example 3: product safety evaluation
Safety evaluations were carried out using physical sunscreens #1, #2, #3 obtained in examples 1 to 3 and physical sunscreens #4, #5, #6 obtained in comparative examples as samples.
The subjects were 60 individuals in total from 20 to 30 year old females, and were divided into 6 groups of 10 individuals each. Selecting qualified plaque test equipment, placing about 0.030g-0.040g of a test object in a plaque tester by a closed plaque test method, applying a hypoallergenic tape to the back of a subject by external application, removing the test object after 24 hours, observing skin reactions after 0.5, 24 and 48 hours respectively, and recording the results according to skin reaction grading standards in cosmetic safety technical Specification (2015 edition).
Evaluation criteria: level 0: a negative reaction; stage 1: suspicious reactions, only weak erythema; 2 stages: weak positive response, erythema, infiltration, edema, and possibly papules; 3 stages: strong positive reaction, erythema, infiltration, edema, papule, and reaction beyond the test area; 4 stages: very strong positive response, marked erythema, severe infiltration, edema, blepharospermia, and response beyond the test area.
Each group of subjects observe skin reactions of the subjects at 0.5, 24h and 48h after the test through the patch test, and the skin reactions of all the subjects are negative, which indicates that the physical sun cream prepared by the invention is safe and has no stimulation.
The above examples merely represent a few embodiments of the present invention, which facilitate a specific and detailed understanding of the technical solutions of the present invention, but are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (10)
1. The physical sun cream is characterized by comprising the following components in percentage by mass:
16 to 26 percent of physical sun-screening agent, 14.6 to 38 percent of humectant, 13.9 to 50 percent of emulsifier, 4 to 12 percent of emollient, 1 to 10 percent of thickener, 0.1 to 2 percent of filler, 0.1 to 2 percent of antioxidant and the balance of water.
2. The physical sunblock of claim 1, wherein the physical sunblock is a combination of zinc oxide and titanium dioxide.
3. The physical sun cream of claim 1, wherein the humectant is selected from one or more of propylene glycol, glycerin, butylene glycol, and 1, 2-hexanediol.
4. The physical sun cream of claim 1, wherein the emulsifier is selected from one or more of polydimethylsiloxane, PEG-10 polydimethylsiloxane, triethoxyoctylsilane, polyglycerol-3 polydimethylsiloxane hydroxyethyl polydimethylsiloxane, cyclopentadimethylsiloxane, cyclohexasiloxane, triethoxyoctylsilane, PEG-9 polydimethylsiloxane ethyl polydimethylsiloxane, silica, and cetyl PEG/PPG-10/1 polydimethylsiloxane.
5. The physical sun cream of claim 1, wherein said emollient is polydimethylsiloxane.
6. The physical sun cream of claim 1, wherein the thickener is cetyl ethylhexanoate.
7. The physical sun block of claim 1, wherein the filler is magnesium sulfate.
8. The physical sun cream of claim 1, wherein the antioxidant is p-hydroxyphenylethanol.
9. A physical sun cream according to claim 1, consisting of the following A, B and C components:
The component A comprises the following components in percentage by mass of the physical sun cream: 10-16% of zinc oxide, 10-15% of polydimethylsiloxane, 1-3% of PEG-10 polydimethylsiloxane, 0.1-2% of triethoxy octyl silane, 0.1-2% of polyglycerol-3 polydimethylsiloxane hydroxyethyl polydimethylsiloxane, 4-10% of titanium dioxide, 1-8% of cyclopenta-dimethylsiloxane, 1-5% of cyclohexyl siloxane, 0.1-2% of triethoxy octyl silane, 0.05-4% of PEG-9 polydimethylsiloxane ethyl polydimethylsiloxane, 0.05-3% of silica, 4-12% of polydimethylsiloxane, 1-10% of cetyl ethyl hexanoate and 0.5-6% of cetyl PEG/PPG-10/1 polydimethylsiloxane;
The component B comprises the following components in percentage by mass of the physical sun cream: glycerol 1-10%, propylene glycol 13-20%, magnesium sulfate 0.1-2% and water in balance;
The component C comprises the following components in percentage by mass of the physical sun cream: 0.5 to 6 percent of butanediol, 0.1 to 2 percent of 1, 2-hexanediol and 0.1 to 2 percent of p-hydroxyacetophenone.
10. A method of preparing a physical sunblock as claimed in claim 9, comprising the steps of:
(1) Adding the components A into an emulsifying pot according to a proportion, heating to 80-85 ℃, and uniformly stirring for later use after complete dissolution;
(2) The component B is put into a water boiler according to a proportion, stirred and heated to 80-85 ℃ for standby;
(3) Pumping the components in the water pot in the step (2) into the emulsifying pot in the step (1), stirring and homogenizing for 5 minutes, and cooling;
(4) And when the temperature is reduced to 45 ℃, adding the component C in proportion, and uniformly stirring to obtain the physical sun cream.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410019702.8A CN117959212A (en) | 2024-01-05 | 2024-01-05 | Physical sun cream and preparation method thereof |
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