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281 results about "Skin pigmentations" patented technology

Preparation method for glabrous greenbrier rhizome extract and use of glabrous greenbrier rhizome extract for skin whitening

The invention relates to a preparation method for glabrous greenbrier rhizome extract. The method comprises the following steps of adding coarse powder into an organic solvent-aqueous solution, performing refluxing extraction, and performing standing, filtering and concentration to obtain glabrous greenbrier rhizome crude extract; dispersing the extract by using water, performing separation and purification by using a macroporous adsorption resin column, performing elution sequentially by using water, a 40 to 80 percent organic solvent-aqueous solution and an 85 to 95 percent organic solvent-aqueous solution, and concentrating and drying eluent of each part to obtain extract of each part, wherein the glabrous greenbrier rhizome extract is obtained by performing concentration and drying on the part eluted by water or the 40 to 80 percent organic solvent-aqueous solution, and is used for inhibiting the activity of tyrosinase and the synthesis of melanin, and a composition comprises 0.01 to 15 mass percent of glabrous greenbrier rhizome extract. The preparation method has the advantages that various whitening effect tests show that the glabrous greenbrier rhizome extract can be used for effectively inhibiting the activity of the tyrosinase and the synthesis of the melanin, can be used for an external skin product as an active whitening raw material, and is high in safety, and the effects of improving skin pigmentation and whitening skin can be achieved.
Owner:SHANGHAI INOHERB COSMETIC
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