**Baizhi (Angelica dahurica):** The root of *Angelica dahurica* (Fisch. ex Hoffm.) Benth. et Hook.f., or its variety *Angelica dahurica* var. *formosana* (Boiss.) Shan et Yuan, both plants of the Apiaceae family.
Nature and flavor: Warm, pungent. Meridian tropism: Stomach (ST), Large Intestine (LI), Lung (LU).
【Actions and Indications】Disperses wind and eliminates dampness, unblocks the orifices and relieves pain, reduces swelling and expels pus. It is classified under acrid-warm exterior-releasing medicinals within the category of exterior-releasing medicinals.
【Pharmacological Research】It exhibits a variety of biological activities, including anti-inflammatory, antitumor, antioxidant, analgesic, antiviral, and antibacterial effects, as well as actions on the cardiovascular system, neuroprotection, hepatoprotection, promotion of osteoblast differentiation, and effects on skin diseases. Additionally, it demonstrates antipyretic, analgesic, and anti-inflammatory properties; shortens blood clotting time; dilates coronary blood vessels; and lowers blood pressure.
Baizhi traditional Chinese medicine uses are deeply rooted in its classification as an acrid-warm exterior-releasing herb, derived from the dried root of Angelica dahurica (Fisch. ex Hoffm.) Benth. et Hook.f. or its variety Angelica dahurica var. formosana (Boiss.) Shan et Yuan, both belonging to the Apiaceae family. In traditional Chinese medicine (TCM), Baizhi is characterized by a warm nature and pungent flavor, with meridian tropism targeting the Stomach (ST), Large Intestine (LI), and Lung (LU) channels. Its primary actions include dispersing wind and eliminating dampness, unblocking the orifices and relieving pain, as well as reducing swelling and expelling pus. This herb is frequently prescribed for conditions involving wind-cold or wind-dampness, such as common colds with frontal headaches, sinus congestion, and rheumatic pain. The pharmacological basis for these effects is attributed to its volatile oils, coumarins (e.g., imperatorin, isoimperatorin), and furanocoumarins, which exhibit anti-inflammatory, analgesic, and antimicrobial properties. Importantly, Baizhi is often combined with other herbs like Angelica sinensis or Asarum to enhance its efficacy in treating nasal congestion and facial pain, making it a cornerstone in TCM formulas for respiratory and musculoskeletal disorders.
Angelica dahurica benefits for skin are increasingly recognized in both traditional and modern dermatological contexts. In TCM, Baizhi is valued for its ability to dispel wind-dampness and reduce swelling, which directly addresses skin conditions such as acne, eczema, and furuncles. The herb’s anti-inflammatory and antimicrobial compounds, particularly imperatorin, help inhibit the growth of Propionibacterium acnes and other pathogenic bacteria, while its analgesic properties alleviate pain associated with inflamed lesions. Additionally, Baizhi contains furanocoumarins that promote blood circulation to the skin, enhancing the delivery of oxygen and nutrients to damaged tissues. This circulatory effect not only accelerates wound healing but also improves overall skin tone and texture. Modern studies have further demonstrated that extracts of Angelica dahurica can inhibit melanogenesis by downregulating tyrosinase activity, offering a scientific basis for its traditional use in skin lightening. When applied topically in formulations such as masks or ointments, Baizhi helps reduce hyperpigmentation and brightens the complexion, though caution is advised due to potential photosensitivity from its coumarin content.
Regarding how to use Baizhi for headaches, the herb is particularly effective for frontal headaches associated with wind-cold or wind-dampness patterns, as well as sinus-related pain. In TCM clinical practice, the typical dosage for decoction is 3–10 grams of dried root, often combined with other herbs like Chuanxiong (Ligusticum chuanxiong) or Fangfeng (Saposhnikovia divaricata) to enhance its analgesic and wind-dispersing actions. For acute frontal headaches, a decoction is prepared by simmering the sliced root in water for 20–30 minutes, then consumed warm, repeated 2–3 times daily. Alternatively, Baizhi powder can be taken orally in capsules (0.5–1 gram per dose) for convenience. Externally, a poultice made from the powdered root mixed with vinegar or water can be applied to the temples or forehead to alleviate pain locally. It is crucial to note that Baizhi is contraindicated in cases of yin deficiency with heat signs or in patients with bleeding disorders, as its warm and dispersing nature may exacerbate these conditions. Always consult a qualified TCM practitioner before use, especially for chronic or severe headaches.
Baizhi herb for whitening skin has been a staple in traditional Chinese beauty regimens for centuries, supported by both empirical use and emerging scientific evidence. The herb’s skin-lightening effects are primarily mediated by its furanocoumarins, which inhibit tyrosinase—the key enzyme in melanin synthesis—thereby reducing hyperpigmentation and evening out skin tone. To utilize Baizhi for this purpose, a common method involves grinding the dried root into a fine powder and mixing it with honey, milk, or rose water to form a paste; this mask is applied to the face for 15–20 minutes, then rinsed off with lukewarm water. Regular use (2–3 times per week) is believed to gradually brighten the skin and diminish dark spots. Additionally, Baizhi is often incorporated into herbal decoctions for internal consumption to address systemic factors underlying dull skin, such as dampness or poor circulation. However, due to its photosensitizing properties, it is essential to avoid sun exposure immediately after topical application and to use sunscreen diligently. While Baizhi offers promising benefits for skin whitening, it should be used judiciously and in combination with other gentle skincare practices to prevent irritation or adverse reactions.