Anti-acne essence
A serum and acne-removing technology, used in cosmetics, skin diseases, cosmetic preparations, etc., can solve the problems of insignificant acne-removing effect, high skin irritation, and damage to the skin, so as to restore the skin barrier function and product quality. Stable, easily absorbed effect
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[0028] The preparation method of the white fresh skin extract is as follows: take the dry epidermis of the root of the white fresh root, immerse it in 70-80% ethanol with a solid-liquid ratio of 1:8-12, and reflux at 50-60°C for 3-5 times, each time 1 -2h, combine the extracts, concentrate under reduced pressure; centrifuge at 8000-9000r / min, take the supernatant, inject the supernatant into a macroporous adsorption resin column, elute impurities with 25-50% ethanol, and then use 60-85% Eluted with ethanol, recovered the eluate, and spray-dried to obtain the extract of the Cortex Dictatus.
[0029] The preparation method of the bark extract is as follows: wash and dry the bark and add it to 75-90% ethanol solution, the ratio of solid to liquid (g:ml) is 1:(15-20); the condition is 50-100°C Under reflux extraction for 2-6 hours, repeat twice, and combine the filtrates; leave the obtained filtrates at -5-10°C for 10-24 hours to take the supernatant to obtain the bark extract.
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