Ingredient Processed / Derived product (加工品 jiā gōng pǐn)

Xiang Mo

Prepared Ink · 香墨

Also known as: Song Yan Mo (松烟墨), Yao Mo (药墨)

Xiang Mo is a traditional Chinese medicine made from pine soot ink and aromatic herbs. It is used to stop bleeding, reduce pain and swelling, and promote healing of wounds and sores. It can be taken internally for internal bleeding and menstrual problems, or applied directly to the skin.

Category Hemostatic herbs (止血药) Blood-invigorating and stasis-dispelling herbs (活血化瘀药) Substances for external application (外用药)
Therapeutic focus Bleeding Wound healing Trauma Skin health

TCM Properties

Temperature

Neutral

Taste

Acrid / Pungent (辛 xīn), Bitter (苦 kǔ), Astringent (涩 sè)

Channels entered

Lungs, Liver

Parts used

Processed / Derived product (加工品 jiā gōng pǐn)

Educational content • Consult qualified TCM practitioners for diagnosis and treatment

What This Ingredient Does

Every ingredient has a specific set of actions — here's what Xiang Mo does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, Xiang Mo is primarily used to support these areas of health:

Bleeding Wound healing Trauma Skin health

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Xiang Mo performs to restore balance in the body:

Stop bleeding Invigorate blood and dispel stasis Regulate menstruation Reduce swelling and promote tissue regeneration Promote urination

How these actions work

Stop bleeding: Xiang Mo strongly astringes and cools the blood, making it effective for various bleeding disorders such as traumatic wounds, nosebleeds, coughing up blood, vomiting blood, and uterine bleeding. It works both internally and topically.

Invigorate blood and dispel stasis: The aromatic and acrid nature of Xiang Mo helps to move blood and break up stasis, which is why it treats blood stasis pain and menstrual irregularities.

Regulate menstruation: By invigorating blood and stopping bleeding, Xiang Mo helps regulate menstrual flow, particularly in cases of heavy or painful periods due to blood stasis.

Reduce swelling and promote tissue regeneration: Xiang Mo can be applied externally to carbuncles, sores, and traumatic injuries to reduce swelling, relieve pain, and encourage new tissue growth.

Promote urination: It has a mild diuretic effect and has been used historically for difficult urination.

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. Xiang Mo is used to help correct these specific patterns.

Why Xiang Mo addresses this pattern

Xiang Mo directly stops bleeding by astringing blood and cooling heat, making it a primary remedy for acute or chronic blood loss. Its astringent taste and neutral temperature help consolidate blood, while its acrid nature prevents stasis from forming after bleeding stops.

A practitioner would look for one or more of these signs

Epistaxis

Nosebleeds due to heat in the blood

Hematuria

Blood in the urine

Menorrhagia

Heavy menstrual bleeding

Commonly Used For

These are conditions where Xiang Mo is frequently used — but only when they arise from the specific patterns it addresses, not in all cases

Arises from: Loss of Blood Blood Stagnation

TCM Interpretation

In TCM, traumatic bleeding is viewed as an acute loss of blood that may be accompanied by blood stasis at the injury site. The body's Qi and blood are disrupted, leading to pain, swelling, and ongoing bleeding.

Why Xiang Mo Helps

Xiang Mo stops bleeding immediately through its astringent action, while its blood-invigorating property prevents stasis from forming. It also reduces swelling and promotes tissue repair, making it ideal for cuts, wounds, and bruises.

Also commonly used for

Epistaxis

Taken internally or applied as powder to stop nosebleeds

Hematuria

Used for blood in the urine caused by heat or stasis

Postpartum Hemorrhage

Stops excessive bleeding after childbirth

Carbuncles

Topical application reduces swelling and resolves pus

Sore

Promotes healing of chronic sores and ulcers

Ingredient Properties

Every ingredient has an inherent temperature, taste, and affinity for specific channels — these properties determine how it interacts with the body

Temperature

Neutral

Taste

Acrid / Pungent (辛 xīn), Bitter (苦 kǔ), Astringent (涩 sè)

Channels Entered

Lungs Liver

Parts Used

Processed / Derived product (加工品 jiā gōng pǐn)

Dosage & Preparation

These are general dosage guidelines for Xiang Mo — always follow your practitioner's recommendation, as dosages vary based on the formula and your individual condition

Standard dosage

0.5–1.5 g per dose (taken as ground powder)

Maximum dosage

Do not exceed 3 g per day. Higher doses may cause digestive upset or, with cinnabar‑containing formulas, cumulative mercury toxicity.

Dosage notes

Dosage varies based on application. For internal bleeding, the ink is ground with vinegar and the liquid is swallowed. For traumatic wounds and skin infections, a paste is made with water or vinegar and applied externally. For eye conditions (e.g., foreign body in the eye), a drop of diluted ink is instilled. When used in a decoction, the ink should be ground separately and added to the strained liquid to avoid heating the aromatic components.

Preparation

Not used as a conventional crude drug in decoction. It is prepared by rubbing the ink stick on a clean inkstone with a small amount of vinegar or water until a thick, smooth liquid is obtained. This liquid is either taken directly or mixed with other prepared medicines. For topical use, it is applied as a paste. Never boil the ink stick itself; high heat may degrade the aromatic constituents and change the consistency of the glue.

Comparable Ingredients

These ingredients have overlapping uses — here's how to tell them apart

San Qi
Xiang Mo vs San Qi

Both stop bleeding and invigorate blood, but San Qi is stronger for internal bleeding and trauma pain, while Xiang Mo is better for external application and for bleeding due to heat.

Bai Ji
Xiang Mo vs Bai Ji

Both are astringent and stop bleeding, but Bai Ji is better for lung and stomach bleeding, while Xiang Mo is more versatile and also invigorates blood to prevent stasis.

Identity & Adulterants

Related species and common adulterations to be aware of when sourcing Xiang Mo

Ordinary calligraphy ink or cheap charcoal ink is sometimes passed off as medicinal ink. Authentic Xiang Mo is distinguished by its characteristic aromatic herbal fragrance (lacking in plain ink) and by the fact that true medicinal ink is made from pine soot, not industrial carbon black or lampblack. The texture is also smoother and more uniform. Some low‑quality products may replace animal glue with vegetable gums, which alters the hemostatic effect and shelf life. Always purchase from a trusted Chinese medicine source and look for designated medicinal ink (药墨) rather than purely ornamental or calligraphic ink.

Educational content — always consult a qualified healthcare provider or TCM practitioner before using any ingredient.

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for Xiang Mo

Slightly toxic

Medicinal ink is generally safe when properly manufactured and used in appropriate doses. Animal studies (rats) with 24‑week administration showed no drug‑related changes in liver/kidney function, blood glucose, or lipids, and no significant pathological organ changes. However, some formulations contain cinnabar (朱砂, mercuric sulfide), which is potentially toxic with excessive or long‑term use. The addition of animal gallbladders and other potent substances requires strict adherence to classical processing methods. Always ensure the ink is produced by a reputable source and prescribed by a qualified practitioner. Do not use ordinary calligraphy ink as a substitute.

Contraindications

Situations where Xiang Mo should not be used or requires extra caution

Caution

Should be used cautiously during pregnancy, as many medicinal ink formulas contain herbs that invigorate blood (e.g., musk, frankincense, myrrh) and may stimulate the uterus.

Caution

Not suitable for patients with significant blood stasis without active bleeding, as the astringent and hemostatic nature may exacerbate stasis.

Caution

Use with caution in cases of external sores or ulcers in the early stage where drainage is desired; its astringent effect may trap pathogens.

Caution

Patients with known hypersensitivity to animal glue (cowhide, deer, or fish glue) should avoid internal use.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

Not recommended during pregnancy. Most medicinal ink formulas contain blood‑invigorating and strongly aromatic herbs (e.g., musk, frankincense, myrrh) that may stimulate uterine contractions and pose a risk of miscarriage. Even plain pine‑soot ink without these additives is usually avoided due to its prominent blood‑stopping and descending actions, which in traditional theory can disturb the fetus.

Breastfeeding

No specific studies are available on the safety of Xiang Mo during breastfeeding. Use with caution and under professional guidance.

Children

Xiang Mo has been used historically for children’s conditions such as high fever, febrile convulsions, and oral sores (e.g., in preparations like ‘Babao Wanying Ding’). Pediatric dosage should be carefully reduced: typically 0.1–0.3 g per dose. Avoid prolonged use, especially if the formula contains cinnabar. Always consult a qualified practitioner before giving medicinal ink to children.

Botanical Description

Physical characteristics and morphology of the Xiang Mo source source material

Xiang Mo is not a plant but a prepared ink used in traditional Chinese medicine. It is made primarily from pine soot (松烟), the fine carbon residue obtained by burning the wood of pine trees (most commonly Pinus massoniana or related species), combined with animal glue (usually cowhide glue), and often enriched with a blend of aromatic herbs such as musk, borneol, frankincense, myrrh, costus root, and others. The resulting ink stick is ground with water, vinegar, or wine on an inkstone before use. Although no living medicinal plant corresponds to this substance, the pine trees that yield the soot are evergreen conifers with needle‑like leaves, rough bark, and woody cones, typical of mountainous regions in southern China.

Sourcing & Harvesting

Where Xiang Mo is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

Pine soot for premium incense‑quality medicinal ink is traditionally collected in winter when the air is dry; the manufactured ink sticks are then aged for several years before use.

Primary growing regions

The finest medicinal ink (Xiang Mo) historically comes from Huizhou (徽州) in modern‑day Anhui Province, especially Shexian County (歙县). This region has been the center of ‘Huimo’ (徽墨) production since the Song Dynasty and is regarded as the 道地药材 (dào dì yào cái) area for high‑quality pine‑soot ink used in medicine.

Quality indicators

High‑quality Xiang Mo should be dense, finely textured, and free of cracks or granular roughness. When ground on an inkstone with a small amount of water, it yields a smooth, glossy black liquid without grittiness. The dry ink stick should emit a pleasant, complex fragrance from the added aromatic herbs (a blend of musk, borneol, costus, etc.) without any musty or scorched odor. Avoid ink that is brittle, has a dull surface, or smells of petroleum — these indicate poor raw materials or improper storage. For medicinal grade, the ink should be clearly labeled as ‘pine‑soot’ (松烟), not ‘oil‑soot’ (油烟), and preferably bear the name of a reputable maker.

Classical Texts

Key passages from the classical Chinese medical texts that describe Xiang Mo and its therapeutic uses

《本草纲目·土部·墨》 (Compendium of Materia Medica, 1578):
“墨，止血，生肌，合金疮。治吐血、衄血、崩中漏下、血痢、小便不通、痈肿发背，醋磨涂之。”
Translation: “Ink stops bleeding, generates flesh, and closes metal‑caused wounds. It treats spitting of blood, nasal bleeding, uterine flooding and leakage, bloody dysentery, urinary retention, welling‑abscesses and flat‑abscesses on the back. Grind it with vinegar and apply topically.”

Also described by Kou Zongshi in 《本草衍义》 (Extended Meanings of Materia Medica, 1116): “墨，松之烟也” (Ink is the smoke of pine). This definition establishes that medicinal ink should be made from pine soot, not oil‑soot or other sources.

《肘后备急方》 (Handbook of Prescriptions for Emergencies) by Ge Hong (Jin Dynasty) records the earliest medicinal use: “姜墨丸” (Ginger‑Ink Pill) made with dried ginger, good ink, and vinegar‑fermented millet liquor (酢浆) for treating red‑and‑white dysentery.

Historical Context

The history and evolution of Xiang Mo's use in Chinese medicine over the centuries

The medicinal use of ink evolved from ancient calligraphy practices. As early as the Western Zhou Dynasty, artificial ink was made from charcoal and plant materials. By the Tang Dynasty, pine‑soot ink production had become a sophisticated craft, and the addition of aromatic herbs to improve fragrance and quality inadvertently gave rise to medicinal ink (药墨).

Ge Hong’s Handbook of Prescriptions for Emergencies (Jin Dynasty) contains the earliest recorded formula, while Li Shizhen’s Compendium of Materia Medica consolidated the therapeutic uses of pine‑soot ink. During the Ming and Qing Dynasties, specialized drug‑houses produced celebrated medicinal ink sticks such as “Eight Treasure Five Gallbladder Medicinal Ink” (八宝五胆药墨), created by the renowned ink‑maker Hu Kaiwen. It incorporated eight precious substances (pearl, musk, borneol, antelope horn, cinnabar, rhinoceros horn — replaced by buffalo horn — bezoar, and toad venom) and five animal gallbladders (pig, snake, bear, black carp, and ox) to powerfully cool blood, clear heat, and stop bleeding. This preparation became a tribute to the imperial court and was hailed as one of China’s three extraordinary medicines alongside Yunnan Baiyao and Pian Zai Huang.

The name “Xiang Mo” (香墨) literally means “fragrant ink,” referring to the aromatic herbs added that give it a distinctive, pleasant scent and enhance its therapeutic actions. Today, medicinal ink is still used in traditional clinical practice, especially for dermatological conditions and certain bleeding disorders.