Chinese Dittany Bark Cut (Dictamnus dasycarpus), known in Traditional Chinese Medicine (TCM) as Bai Xian Pi (白鲜皮), is a bitter, cooling, and aromatic herb traditionally used to clear heat, dry dampness, and dispel wind toxins. Derived from the bark of the Dictamnus dasycarpus root, this cut form is ideal for decoctions and herbal blends, offering a focused and potent botanical for skin and immune support. In TCM, Bai Xian Pi is most commonly used to address damp-heat conditions, particularly those affecting the skin, joints, and lower body. It is traditionally included in formulas to help with itching, redness, swelling, or oozing skin eruptions, as well as hot-type joint discomfort.