Alpha-arbutin co-conveying nanometer composition and preparation method and application thereof
A nano-composite, arbutin technology, applied in the directions of pharmaceutical formulations, cosmetic preparations, cosmetic preparations, etc., can solve the problems of poor α-arbutin transdermal performance, insufficient whitening effect, poor stability and the like , to achieve the effect of improving skin retention, increasing drug loading and structural stability
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[0090] The present invention also provides a method for preparing the α-arbutin co-delivery nano composition described in the above technical solution, comprising the following steps:
[0091] A. Dissolving α-arbutin, other water-insoluble whitening active ingredients, emulsifiers, and co-emulsifiers in oil to obtain an oil phase;
[0092] B. Dissolving other water-soluble whitening active ingredients with water to obtain an aqueous phase;
[0093] C. Mix and emulsify the oil phase obtained in step A with the water phase obtained in step B, and micronize to obtain a micron-scale dispersion;
[0094] D, the micron-scale dispersion obtained in step C is subjected to nano-processing to obtain a nano-scale dispersion, which is a co-delivery nano composition of α-arbutin;
[0095] There is no sequence between the steps A and B.
[0096] According to the water solubility of other whitening active ingredients, the present invention is divided into water-soluble other whitening acti...
Embodiment 1
[0115] 0.01% glabridin, 5% vitamin E, 0.01% glycyrrhetinic acid, 0.1% carnosine, 25.0% polyoxyethylene sorbitan fatty acid ester, 7.0% sorbitan fatty acid ester, 5.0% polyoxyethylene Sorbitan fatty acid ester, 5.0% isopropyl myristate, 0.5% glyceryl laurate, 2.0% palmityl palmitate, 7.0% polyethylene glycol 400 and 8.0% propylene glycol were mixed and stirred in a water bath at 65°C , to obtain the oil phase and set aside;
[0116] Add 5.0% α-arbutin, 8.0% nicotinamide, and 2.0% vitamin C ethyl ether into 20.38% water, mix well in a water bath at 65°C to obtain a water phase, and set aside;
[0117] Add the oil phase solution to the water phase dropwise at a rate of 3 drops / second, and stir evenly at 65°C. After the dropwise addition, high-speed shear emulsification at 10,000 rpm for 1 min to produce a micron-sized dispersion of 2.8 μm;
[0118] The micron-scale dispersion is subjected to high-pressure homogenization treatment under the condition of a pressure of 1200 bar, an...
Embodiment 2
[0121] 3.0% phenylethyl resorcinol, 0.01% vitamin C tetraisopalmitate, 0.05% dipotassium glycyrrhizinate, 0.5% phloretin, 10.0% sorbitan fatty acid ester, 15.0% polyoxyethylene Sorbitan fatty acid ester, 13.0% polyoxyethylene fatty acid ester, 2.0% glyceryl laurate, 1.0% palmityl palmitate, 2.0% isopropyl palmitate, 13.0% propylene glycol, 5.0% glycerin and 1.0% 1, Mix and stir 3-butanediol in a water bath at 65°C to obtain an oil phase, which is set aside;
[0122] Add 0.05% α-arbutin, 17.0% nicotinamide, and 3.0% vitamin C glucoside into 14.39% water, mix well in a water bath at 65°C to obtain a water phase, and set aside;
[0123] Add the oil phase solution to the water phase dropwise at a rate of 3 drops / second, and stir evenly at 65°C. After the dropwise addition, high-speed shear emulsification at 8000rpm for 3min to make a micron-sized dispersion of 8.9μm;
[0124] The micron-scale dispersion is subjected to high-pressure homogenization treatment under the condition of...
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