Method for preparing whitening nanoparticle emulsion with solid phase core
A solid-phase core and nanoparticle technology, which is applied in pharmaceutical formulations, cosmetic preparations, cosmetic preparations, etc., can solve the problems of deterioration during product storage, easy oxidation of mandelic acid, and unstable chemical properties, etc. Increase shelf life, inhibit the formation of melanin, good water dispersibility
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Embodiment 1
[0021] A method for preparing a whitening nanoparticle emulsion with a solid-phase inner core, using the following steps:
[0022] A: Weigh 13.0g glyceryl stearate, 2.60g cetearyl ether-20, 2.60g cetearyl ether-12 according to the mass ratio of 5:1:1 and mix the above three substances as the oil phase , heated to 82°C;
[0023] B: Weigh 2.53g paeonol, 2.53g daisy flower extract, 7.57g black tea seed oil, 2.53g mandelic acid in a mass ratio of 1:1:3:1, and mix the above four substances , to obtain a whitening active composition;
[0024] C: Weigh 18.18g and 15.15g according to the mass ratio of 1.2:1, the oil phase obtained in steps A and B, and mix them uniformly at 82°C to form a uniform oily composition. In the present invention, the oil phase composition has a melting point of 48°C and is solid at room temperature;
[0025] D: Weigh 33.33g of the oily composition obtained in step C and 166.67g of deionized water at a ratio of 1:5, mix evenly at 82°C, and stir with a prop...
Embodiment 2
[0030] A method for preparing a whitening nanoparticle emulsion with a solid-phase inner core, using the following steps:
[0031] A: Weigh 13.90g of glyceryl stearate, 5.56g of cetearyl ether-20, and 2.78g of cetearyl ether-12 according to a mass ratio of 5:2:1, and mix the above three substances as an oil phase , heated to 83°C;
[0032] B: Take by weighing 2.22g paeonol, 4.44g daisy flower extract, 8.89g black tea seed oil, 2.22g mandelic acid in a ratio of 1:2:4:1 by mass, and mix the above four substances mixed to obtain a whitening active composition;
[0033] C: Weigh 22.22g and 17.78g according to the mass ratio of 1.25:1, the oil phase obtained in steps A and B, and mix them uniformly at 83°C to form a uniform oily composition. In the present invention, the oil phase composition has a melting point of 51°C and is solid at room temperature;
[0034] D: Weigh 40.0 g of the oily composition obtained in step C and 160.0 g of deionized water at a ratio of 1.25:5, mix ev...
Embodiment 3
[0039] A method for preparing a whitening nanoparticle emulsion with a solid-phase inner core, using the following steps:
[0040] A: Weigh 12.85g of glyceryl stearate, 7.71g of cetearyl ether-20, and 5.14g of cetearyl ether-12 according to a mass ratio of 5:3:2, and mix the above three substances as an oil phase , heated to 83°C;
[0041] B: Take by weighing 3.95g paeonol, 3.95g daisy flower extract, 9.88g black tea seed oil, 1.976g mandelic acid in the ratio of 2:2:5:1, and mix the above four substances mixed to obtain a whitening active composition;
[0042] C: Weigh 25.69g and 19.76g according to the mass ratio of 1.3:1, the oil phase obtained in steps A and B, and mix them uniformly at 83°C to form a uniform oily composition. In the present invention, the oil phase composition has a melting point of 46°C and is solid at room temperature;
[0043] D: Weigh 45.45g of the oily composition obtained in step C and 154.55g of deionized water at a ratio of 1.5:5, mix evenly at...
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