Preparation method and application of kudzu vine root extract nano suspension for eye care

The invention discloses a preparation method of a kudzu vine root extract nano suspension for eye care. The preparation method comprises the following key steps: crushing and sieving a dried kudzu vine root medicinal material, adding deionized water in proportion, transferring into a pressurized extractor, and extracting for a certain time while keeping the temperature and pressure; and after the extraction is finished, directly spraying the extract into a beaker to obtain the kudzu vine root extract nano suspension. The extraction of the medicinal components of kudzu vine and the preparation of the nano suspension are completed in one step, and the preparation method is simple, convenient, green and safe. Compared with a kudzu vine root extract prepared by a traditional extraction method, the kudzu vine root extract nano suspension has good transdermal absorption performance and effects of promoting blood circulation and removing blood stasis. The nano suspension is directly added into eye care cosmetics suc