The present invention relates to novel uses of compounds from Antrodia cinnamomea mycelia and mixtures comprising the compounds. The novel uses comprise whitening skin, combating skin ageing, reducing scar formation, inducing or enhancing liver regeneration, or treating fibrosis or a fibrosis-associated disorder in a subject in need thereof. The compounds have the formulaand preferably are selected from3-isobutyl-4-[4-(3-methyl-2-butenyloxy)phenyl]furan-2,5-dione,3-isobutyl-4-[4-(3-methyl-2-butenyloxy)phenyl]-1H-pyrrol-2,5-dione,3-isobutyl-4-[4-(3-methyl-2-butenyloxy)phenyl]-1H-pyrrol-1-ol-2,5-dione,3R*,4S*-1-hydroxy-3-isobutyl-4-[4-(3-methyl-2-butenyloxy)phenyl]pyrrolidine-2,5-dione, and3R*,4R*-1-hydroxy-3-isobutyl-4-[4-(3-methyl-2-butenyloxy)phenyl]pyrrolidine-2,5-dione.
