Drug delivery system for preventing and treating hair loss, preparation method thereof and microneedle patch
A drug delivery system and a hair loss technology, which can be used in pharmaceutical formulations, medical preparations with non-active ingredients, and medical preparations containing active ingredients, etc. Metabolism, reducing oxidative failure, and promoting healing effects
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preparation example 1- preparation example 10
[0090] Since the selection of anti-hair loss small molecule substances is only to adapt to the hair loss symptoms of different causes, and seborrheic alopecia accounts for the largest proportion in the cause of hair loss, minoxidil is selected as the anti-hair loss small molecule substances in the following preparation examples.
[0091] The preparation process of the anti-hair loss component in Preparation Example 1-Preparation Example 10 is the same, and all comprises the following process steps:
[0092] Step 1. Organic phase configuration, put lecithin, anti-hair loss small molecular substances, half of cholesterol and antioxidants into absolute ethanol according to the ratio, heat to 35±1°C, disperse evenly, and maintain a nitrogen atmosphere to remove oxygen throughout the process , to obtain the organic phase.
[0093] Step 2, preparation of coated vesicles, put the remaining half of the cholesterol into the organic phase in step 1, disperse evenly, and obtain coated ve...
preparation example 11
[0098] The difference between Preparation Example 11 and Preparation Example 10 is that Tween-80 of equal mass is used instead of lysine as a dispersant.
preparation example 12
[0100] The difference between Preparation Example 12 and Preparation Example 10 is that the anti-hair loss component is prepared by the following method:
[0101] Step 1, organic phase configuration, put lecithin, anti-hair loss small molecular substances, cholesterol and antioxidants into absolute ethanol according to the ratio, heat to 35±1°C, disperse evenly, keep nitrogen atmosphere to deoxygenate during the whole process, and get The organic phase.
[0102] Step 2, material preparation, dissolve the dispersant in excess deionized water to obtain a dispersant solution, then put the organic phase obtained in step 1 into the dispersant solution, keep stirring during the addition process, continue to stir for 1 hour after the addition is completed, and stir The speed is 350r / min. After the stirring is completed, the material is cooled to room temperature to obtain the anti-hair loss component suspension, the absolute ethanol is evaporated, and the anti-hair loss component is...
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