The invention discloses a
plant composition with the
efficacy of whitening the
skin. The
plant composition is characterized by being prepared from the following raw materials in percentage by weight: 15-50 % of rhizoma
glycyrrhiza glabra, 10-40 % of rhizoma ligustici wallichii, 5-35 % of
fructus hippophae, and 5-35 % of
chrysanthemum morifolium flowers. A preparation method of the
plant composition comprises the following steps: smashing the
plant composition, carrying out screening, carrying out soaking by adopting an extracting
solvent, carrying out room-temperature extracting by adopting a high-pressure homogenizing extractor, carrying out
centrifugal separation on the extracted solution, carrying out membrane concentration, carrying out adsorbing by adopting
macroporous resin, carrying out eluting for a plurality of times by adopting
ethanol solution, collecting the eluate, after membrane concentration, adding with
butanediol with the weight being equal to that of the extracted concentrated solution for dissolving, and carrying out filtering, thus obtaining the
plant composition. The
plant composition obtained by the method has the effects of efficiently inhibiting melanogenesis,
scavenging free radicals and screening the
sunlight, and has the effect of whitening and brightening the
skin after being applied to the
cosmetics. The plant composition has the advantages that the raw materials are easily available, the preparation method is simple and convenient, as well as
pollution-free and safe, and the application prospect and market prospect are very good.