#BlumeaBalsamifera

Nestled in the heart of Thai villages and lush herb gardens across Southeast Asia, the “หนาด” leaf—known scientifically as Blumea balsamifera—has quietly maintained its reputation as a household remedy for generations. Revered under a bouquet of local names such as คำพอง, หนาดหลวง, ผักชีช้าง, and พิมเสน, this member of the Asteraceae family is woven into the tapestry of Thai self-care traditions. But what does modern science say about the plant that grandmothers once crushed and applied to wounds, or steeped into herbal compresses for aches and pains? As the world rediscovers natural therapies, the story of หนาด is coming full circle—inviting health-conscious Thais to examine old beliefs with fresh scientific eyes.

Few remedies possess the allure and complexity of “pimsen”—a fragrant resin and essential compound embedded in centuries of traditional healing across Southeast Asia. Known variously as พิมเสน, พิมเสนเกล็ด, พิมเสนตรังกานู, and พรมเสน, pimsen is both a substance and a legacy, with roots extending from the forests of Sumatra and Borneo to the heart of Thai herbal pharmacopoeia. Extracted primarily from Dryobalanops aromatica (Sumatran camphor), but also sourced from Blumea balsamifera (หนาดหลวง, sambong) and Pogostemon cablin (patchouli, พิมเสนต้น), pimsen bridges the worlds of traditional medicine, cultural symbolism, and modern pharmacological research. Thai wellness enthusiasts, practitioners of traditional medicine, and the scientifically curious alike have much to discover in the evolving story of pimsen.