Siler root, known botanically as Saposhnikovia divaricata, is a traditional herb widely used in Chinese medicine, where it is called "Fang Feng." In traditional Chinese medicine (TCM), siler root is employed for its reputed abilities to dispel wind, relieve pain, and address various skin conditions. Its use for dandruff is primarily grounded in the TCM theory that dandruff is caused by "wind-damp" or "wind-heat" affecting the scalp, leading to flaking and itching. Fang Feng is often included in herbal formulas designed to treat scalp pruritus, seborrheic dermatitis, and other flaky scalp issues, sometimes in combination with other botanicals like Sophora or Schizonepeta. Despite its traditional use, scientific validation for siler root's efficacy against dandruff is minimal. There are few, if any, clinical trials that specifically evaluate its effects on dandruff or the underlying causes such as Malassezia yeast overgrowth or excess sebum production. Some studies have identified anti-inflammatory and immunomodulatory properties in siler root extracts, which could theoretically ease scalp irritation, but these studies are mostly preclinical or relate to other skin conditions. Overall, the use of siler root for dandruff is justified by tradition rather than robust scientific evidence.