Oriental arborvitae (Platycladus orientalis), also known as Chinese thuja or biota, has a long history of use in traditional Chinese medicine (TCM). In TCM, the seeds (Bai Zi Ren) and other parts of the plant are commonly used for various conditions, especially those related to the skin and mucous membranes. Itching ears, which may be caused by dryness, inflammation, or mild infections, are sometimes addressed using herbal remedies that are thought to nourish Yin, moisten dryness, and reduce irritation. Historical TCM texts mention the use of oriental arborvitae for conditions involving itching or irritation, though these references are more general and often pertain to skin conditions rather than specifically to the ears. There is a lack of modern clinical evidence directly supporting the use of oriental arborvitae for itching ears, and most of the support comes from anecdotal or traditional practices rather than systematic research. The evidence rating is thus low, reflecting the scarcity of clinical trials or pharmacological studies investigating this particular use. In summary, the use of oriental arborvitae for itching ears is rooted primarily in tradition rather than modern scientific validation. If you are considering herbal remedies for ear conditions, it is essential to consult with a qualified healthcare professional, as improper use may lead to adverse effects or mask underlying medical issues.