The present invention provides an external preparation for skin which contains, as a major ingredient, oleaginous substances extracted from sporoderm-broken spores from Ganoderma lucidum. The spores are preferably being treated with germination activation. The oleaginous substances are preferred to be extracted by a supercritical fluid-carbon dioxide (SCF-CO.sub.2) method. The oleaginous substances prepared by SCF-CO.sub.2 is transparent and odorless. They also demonstrates effects on skin smoothening, wrinkles reduction, aging defiance, inflammation lessening, pigmentation lightening, and irritation alleviation. The external preparation can be a cosmetic or a therapeutic composition.