Chinese herbal oil from dried rhizomes of Curcuma zedoaria / C. phaeocaulis (Zingiberaceae); origins Guangxi, Guangdong, Sichuan and Wenzhou Zhejiang; one of the Curcuma Trio with Yujin and Jianghuang.

Blends with woods (sandalwood, patchouli, vetiver), spices (ginger, black pepper, cardamom), resins (frankincense), citrus and small floral accents; use 1:5-10 ratio, blend matures in 2 weeks.

Fixed Dao-di sourcing, standardised distillation and full HPLC release testing; fingerprint similarity ≥0.95 locks composition; internal tolerances tighter than pharmacopoeia minimums.

Warm grounding oil: diffuse 1-3 drops, massage at 1-3% in carrier; TCM external use for muscle/joint discomfort; patch test first, avoid ingestion/pregnancy without professional guidance.

Intense camphoraceous-curcuma top with warm ginger-pepper spice and dry bitter woody-medicinal base; penetrating, long-lasting; hotter and drier than turmeric, deeper and more medicinal than ginger.

Fragrance grade: clear to pale yellow oily liquid, density 0.950-1.020; pharmacopoeia grade: light to dark brown clear liquid, density 0.970-0.990, RI 1.500-1.510; colour deepens naturally with age.