The invention discloses a preparation method and an application for an aloe flower extracting solution. The preparation method comprises the following steps: preparation of a crude extracting solution, pretreatment, removal of
sediment through a micro-
filtration membrane, separation through an ultra-
filtration membrane, and concentration through a nano-
filtration membrane. The method is convenientto operate, low in
energy consumption, low in cost, ecological,
environmentally friendly and applicable to industrial production; the active substance, namely
polyphenol, in the aloe flower is reserved in an obtained aloe flower extracting solution to the maximum extent, and interference of macromolecular impurities like
plant pituitous substances is effectively removed, so the quality stabilityof the aloe flower extracting solution is reinforced. 3D
skin model test results show that the aloe flower extracting solution can significantly improve the tissue activity of a model, has an obviousimprovement effect on the phenomena of reduction of the number of living cells, loose arrangement and the like, and significantly reduces the IL-1 alpha
secretion level; and the apparent chromaticityof the model is obviously improved, and the L * value is obviously increased, while the
melanin content is reduced. The aloe flower extracting solution prepared by using the preparation method provided by the invention does not contain any toxic
solvent, is stable in quality and definite in effect, and can be applied to
cosmetics for resisting aging, resisting
allergy, whitening and the like.