The present invention describes compositions and methods for improving the appearance of skin, particularly, treating, preventing, ameliorating, reducing and/or eliminating excess accumulation or production of subcutaneous fat, such as cellulite, or conditions related to excess accumulation, production, or excretion of sebum, such as acne, an oily complexion, oily hair or scalp, or undesirable body odor, by topically applying compositions comprising Alisma orientale constituents, or extracts therefrom.