Buchu Leaf Oil is a yellow to brownish-yellow liquid, oily or somewhat viscous, depending upon the age of the oil and the dryness of the plant material prior to distillation. The odor is very peculiar: strong, bitter-sweet, minty-camphoraceous, rootlike, penetrating and somewhat medicinal, reminiscent of cough preparations. One of the main constituents of the oil is Diosphenol, a terpenoid phenol. It is responsible for the antiseptic effect of Buchu Leaf Oil. A significant percentage of menthone in the oil is probably the cause of the minty odor and somewhat cool flavor of the oil. Buchu leaf oil is occasionally used in chypre bases, certain types of colognes, etc. for its power, diffusion, and freshness.