Ai Ye / Ai Cao (powder form) – 艾叶粉/ 艾草粉, AKA Mugwort, is a fundamental herb in TCM, particularly known for its use in “moxibustion.” It is considered a warm, bitter herb that is essential for conditions involving “Cold” in the lower part of the body.
Powder Form Benefits:
- Rapid and Maximum Extraction: The powder form has a vastly higher surface-area-to-volume ratio compared to whole leaves. When making hot infusions, teas, or foot soaks, the active constituents, (such as volatile oils, flavonoids, and tannins), extract into the water almost instantly, requiring zero boiling or simmering time.
- Versatility for Topical Pastes and Poultices: For external applications on skin rashes, joint pain, or eczema, the powder can be mixed directly with warm water, vinegar, or honey to create a smooth, easily applicable paste. Regular leaves are too fibrous and coarse to be used topically without complex processing.
- Convenient Oral Consumption: Mugwort powder can be easily mixed into warm water as an instant tea, stirred into wellness smoothies, or encapsulated. This bypasses the traditional, time-consuming process of boiling whole leaves and straining out the debris.
- Enhanced Absorption in Foot and Body Soaks: Ai Ye is highly popular in Asian wellness traditions for detoxifying foot baths to dispel “cold and dampness.” The powder dissolves thoroughly in hot water, ensuring that the skin absorbs the warming properties uniformly without leaving large, floating leaves that clog drains.
- Uniform Dosing: When compiling herbal formulas or preparing precise home remedies, powder allows for exact weight measurements down to the gram. Whole leaves can vary significantly in moisture, stem-to-leaf ratio, and density, making standard dosing less consistent.
- Easier Ingredient Blending: If you are blending Mugwort with other warming or skin-soothing herbs (like ginger or porous mineral powders), the powder form incorporates seamlessly into a homogenous mixture, ensuring balanced synergy in every use.
Product Overview
- Botanical Name: Artemisia argyi
- Taste: Bitter, Acrid
- Temperature: Warm (slightly toxic in large doses)
- Meridians: Liver, Spleen, Kidney
Intended Use & Functions
Ai Ye is primarily used to warm the meridians and stop bleeding. It is unique because most herbs that stop bleeding are cooling, whereas Ai Ye is specifically for bleeding caused by “Cold” and “Deficiency.”
- The primary herb for dispelling “Cold” from the lower Jiao (pelvic region) to regulate menstruation, and add warmth to the uterus.
- Used to support pregnancy and to treat “restless fetus” or vaginal bleeding during pregnancy caused by cold deficiency.
- Assists in alleviating pain caused by cold or damp obstructions, particularly in the joints and abdomen.
- When processed into “moxa wool,” it is burned over acupuncture points to stimulate blood flow and strengthen the body’s Yang energy.
Typical Treatments
- Gynecological Issues: Used for menstrual pain (dysmenorrhea), irregular periods, infertility due to a “Cold Womb,” and excessive uterine bleeding (metrorrhagia).
- Abdominal Pain: Treats cold-type stomach aches or abdominal pain that feels better with the application of heat.
- Skin Conditions: Used as a topical wash for itchy skin rashes, eczema, or fungal infections due to its dampness-clearing and antiseptic properties.


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