Summary of the invention
Nanotechnology is more a kind of technology of immediate development, and application is arranged in the time of in cosmetics.Using this technology can be the effective ingredient deep layer that successfully penetrates to the skin, and better brings into play its effect; The interpolation that simultaneously can effectively save active quantities in the prescription.Microemulsion is transparent or semitransparent, the isotropic thermodynamic stable system that is formed under proper proportion by water, oil, surfactant (surfactant) and cosurfactant (cosurfactant), and the technology of preparation microemulsion is referred to as micro-emulsion technology.Not only particle diameter is less for the nano-particle of application micro-emulsion technology preparation, and has good thermodynamic stability.
The present invention uses micro-emulsion technology the emollient in the astringent is made granule less than 200nm, strengthen its absorption, to remedy the deficiency that can't add a large amount of emollient skin cares because of the dosage form restriction, can successfully replace traditional astringent and milky lotion, emollient cream, " skin protection trilogy " is reduced to " skin protection duo " saves time, efficient is provided for user.
The object of the present invention is to provide a kind of effectively astringent of skin moistening, simplify the skin protection step.
Another object of the present invention is at the deficiency that does not reach desirable skin moistening effect owing to emollient levels is few, provide a kind of emollient particle diameter that contains, increase skin absorbs, make a small amount of oils and fats can satisfy daily skin moistening requirement all less than the astringent of 200nm.
Another object of the present invention provides a kind of preparation method that contains the greasy astringent of nanometer skin moistening.
The present invention adopts micro-emulsion technology to make the particle diameter of emollient in astringent all less than 200nm, and concrete technical scheme is as follows:
A kind of astringent is grouped into by following one-tenth by weight percentage:
Surfactant 0.1-20%, preferred 0.5-10%, more preferably 1-6%;
Polyhydric alcohol 0.1-30%, preferred 1-20%, more preferably 1.5-10%;
Emollient 0.1-20%, preferred 0.2%-15%, more preferably 0.5-10%;
Wetting agent 0.1-30%, preferred 0.5-20%, more preferably 1-10%;
Antiseptic 0.001-3%, preferred 0.005-2.5%, more preferably 0.01-2%;
Other additive 0.01-15%, preferred 0.05-10%, more preferably 0.1-5%;
Water 50-98%, preferred 65-95%, more preferably 75-95%;
Described surfactant is for meeting the non-ionic surface active agent that " cosmetics health standard " requires, and includes but not limited to one or more the mixture in polyglycereol-2 oleate, Span60, sorbitan laurate, dimethicone copolyol, 16 octadecyl glucose esters, polysorbate, the sorbitan fatty acid ester;
Described emollient is for meeting the composition with skin care effect that " cosmetics health standard " requires, and includes but not limited to one or more the mixture in lecithin, hydrolecithin, shea butter, carbonic acid dibutyl ester, Jojoba oil, dimethicone, caprylic/capric triglyceride, isooctyl acid hexadecanol ester, natural squalane, the octyl methoxycinnamate;
Described antiseptic includes, but are not limited to one or more mixture in methyl hydroxybenzoate, propylparaben, DMDM Hydantoin, imidazolidinyl urea, phenoxyethanol, the sodium methyl phydroxybenzoate salt for the composition that having of meeting that " cosmetics health standard " require postpones the corrupt effect that growth of microorganism or chemical change cause.
In a preferred embodiment of the present invention, the particle diameter of the effective ingredient in the described astringent is nanoscale.
In a preferred embodiment of the present invention, the polyhydric alcohol that is adopted in the described astringent is one or more the mixture in propylene glycol, glycerol, 1,3 butylene glycol, mannitol, ethanol, the sorbitol.
In a preferred embodiment of the present invention, the wetting agent that is adopted in the described astringent is one or more the mixture in allantoin, hyaluronic acid, the Sargassum extract.
In a preferred embodiment of the present invention, other additive that is adopted in the described astringent is one or more mixture in Vitamin E acetate, butylated hydroxytoluene, EDTA-2Na, EDTA-4Na, the α-bisabolol
The invention still further relates to a kind of preparation method of astringent, may further comprise the steps:
1) be 0.1-20% with mass percent, preferred 0.5-10%, the more preferably surfactant of 1-6%; 0.1-30%, preferred 1-20%, the more preferably polyhydric alcohol of 1.5-10%; 0.1-20%, preferred 0.2%-15%, the more preferably emollient of 0.5-10%; 0.001-3%, preferred 0.005-2.5%, the more preferably antiseptic of 0.01-2%; 0.01-15%, preferred 0.05-10%, more preferably other additives of 0.1-5% form mixed solution A 50-80 ℃ of stirring and dissolving;
2) be 0.1-30% with mass percent, preferred 0.5-20%, the more preferably wetting agent of 1-10%; The polyhydric alcohol of 0-10%, the antiseptic of 0-2%, other additives of 0-5% are 50-98% at mass percent, preferred 65-95%, more preferably dissolving forms mixed solution B in the water of 75-95%;
3) be 30-60 ℃ in temperature, mixing speed is under the 500-2000 commentaries on classics/min condition, and the mixed solution B of 0.1-10% is joined in the mixed solution A, obtains a kind of transparent or semitransparent mixed solution C;
4) mixed solution C leaves standstill among the mixed solution B that joins surplus after 2 hours, obtains a kind of astringent.
The astringent that the present invention discloses can remedy the effectively deficiency of skin moistening of common astringent, can realize the common skin care item shortcoming of moisturizing rapidly again, and characteristics such as it is simple to have preparation technology, and the skin sense is salubrious, can be user simplification skin protection step.
The specific embodiment
Below preferred embodiment of the present invention is described in detail, thereby protection scope of the present invention is made more explicit defining so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that.In embodiments of the present invention, proportional quantity is with the mass percent example.
In preferred embodiment of the present invention, the particle diameter of emollient is all less than 200nm in the astringent.
Embodiment 1:
Take by weighing mass percent respectively and be 1.5% polydimethylsiloxanecopolymer copolymer, 1.5% sorbitan fatty acid ester, 2% dicaprylyl carbonate, 0.5% lecithin, 1% hydrolecithin, 1% shea butter, 2% propylene glycol, α-bisabolol of 0.1% place 80 ℃ of water-bath dissolvings to form mixed solution A; Take by weighing mass percent respectively and be 3% Sargassum extract, 0.1%EDTA-2Na, 2% glycerol, 0.4% imidazolidinyl urea join in 85.9% the water, and dissolving forms mixed solution B; At 40 ℃, mixing speed is under the 800 commentaries on classics/min conditions, the mixed solution B of 0.5% (prescription total amount) is joined in the mixed solution A, obtain a kind of clear solution C, leave standstill 2h, mixed solution C is joined among the mixed solution B of surplus, stirring forms the astringent that contains nanometer skin moistening composition.
Embodiment 2:
Take by weighing mass percent respectively and be 1% polysorbate, 2% polyglycereol-2 oleate, 2% sorbitan fatty acid ester, 1.5% shea butter, 2% natural squalane, 1% different monooctyl ester hexadecanol ester, 2.5% ethanol, 0.4% phenoxyethanol places 60 ℃ of water-bath dissolvings to form mixed solution A; Take by weighing mass percent respectively and be 0.2% allantoin, 3% glycerol, 0.1%EDTA-4Na joins in 84.3% the water, places 80 ℃ water-bath dissolving to form mixed solution B; At 40 ℃, mixing speed is under the 800 commentaries on classics/min conditions, and the mixed solution B of 1% (prescription total amount) is joined in the mixed solution A, obtain a kind of clear solution C, leave standstill 2h, mixed solution C is joined among the mixed solution B of surplus, stirring forms the astringent that contains nanometer skin moistening composition.
Embodiment 3:
Take by weighing mass percent respectively and be 2% sorbitan laurate, 2% 16 octadecyl glucose esters, 2% hydrolecithin, 1.5% dimethicone, 2% lecithin, 2% octyl methoxycinnamate, 2% sorbitol, 1.5% ethanol places 80 ℃ of water-bath dissolvings to form mixed solution A; Take by weighing mass percent respectively and be 0.15% hyaluronic acid, 1% Sargassum extract, 0.4% imidazolidinyl urea joins in 83.45% the water, places 80 ℃ water-bath dissolving to form mixed solution B; At 40 ℃, mixing speed is under the 800 commentaries on classics/min conditions, the mixed solution B of 0.8% (prescription total amount) is joined in the mixed solution A, obtain a kind of clear solution C, leave standstill 2h, mixed solution C is joined among the mixed solution B of surplus, stirring forms the astringent that contains nanometer skin moistening composition.
Embodiment 4:
Take by weighing mass percent respectively and be 3% polydimethylsiloxanecopolymer copolymer, 1.5% sorbitan fatty acid ester, 1% dicaprylyl carbonate, 2% lecithin, 1% shea butter, 3% 1, the 3-butanediol, 0.1% propylparaben places 80 ℃ of water-bath dissolvings to form mixed solution A; Take by weighing mass percent respectively and be 0.15% hyaluronic acid, 0.15% methyl hydroxybenzoate, 0.1%EDTA-2Na, 2% glycerol joins in 86% the water, places 80 ℃ water-bath dissolving to form mixed solution B; At 40 ℃, mixing speed is under the 800 commentaries on classics/min conditions, the mixed solution B of 0.5% (prescription total amount) is joined in the mixed solution A, obtain a kind of clear solution C, leave standstill 2h, mixed solution C is joined among the mixed solution B of surplus, stirring forms the astringent that contains nanometer skin moistening composition.
Embodiment 5:
Take by weighing mass percent respectively and be 3% polysorbate, 3% sorbitan fatty acid ester, 0.5% lecithin, 1% Vitamin E acetate, 0.5% caprylic/capric triglyceride, 3% glycerol, 0.4% phenoxyethanol places 60 ℃ of water-bath dissolvings to form mixed solution A; Take by weighing mass percent respectively and be 0.2% allantoin, 0.1%EDTA-4Na, 2% propylene glycol joins in 86.3% the water, places 80 ℃ water-bath dissolving to form mixed solution B; At 40 ℃, mixing speed is under the 800 commentaries on classics/min conditions, the mixed solution B of 0.8% (prescription total amount) is joined in the mixed solution A, obtain a kind of clear solution C, leave standstill 2h, mixed solution C is joined among the mixed solution B of surplus, stirring forms the astringent that contains nanometer skin moistening composition.
Above embodiment; it only is the specific embodiment of the present invention; to being further elaborated and illustrating in the scope of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.