The invention relates to the technical field of
cosmetics, in particular to a composite
plant extract as well as a preparation method and application thereof. The composite
plant extract is prepared from the following raw materials in percentage by
mass: 0.5 to 1 percent of herba verbenae extract, 4 to 6 percent of herba centellae extract, 1.5 to 2.5 percent of rhizoma polygoni cuspidati root extract, 1.5 to 2.5 percent of radix scutellariae root extract, 0.5 to 1.5 percent of
tea leaf extract, 0.5 to 1.5 percent of
glycyrrhiza glabra extract, 0.1 to 1.0 percent of
chamomilla recutita flower extract, 0.1 to 1.0 percent of rosemary leaf extract, 40 to 60 percent of
butanediol and the balance of water. In the extraction process of the
verbena extract,
sodium selenite, gamma-oryzanol and other components are innovatively added into the culture medium, and the content of total flavonoids in the
verbena extract can be effectively increased through the synergistic effect of
sodium selenite and gamma-oryzanol. Furthermore, the total
flavonoid content in the
verbena extract is increased, so that the
skin repairing
barrier effect of the cosmetic can be effectively enhanced.