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Hydrated magnesium silicate mineral (talc). Enters the Bladder, Lung, and Stomach channels. Sweet, bland, and cold, it is the key mineral medicinal for summerheat-dampness and heat strangury. Featured in Zhang Zhongjing's Zhu Ling Tang and the Song-dynasty formula Liu Yi San (talc six parts, gan cao one part).
清热利湿、收湿敛疮，内服外用皆宜
入汤剂宜包煎。外用适量，研末撒或调敷。
Reference range for non-pregnant adults. Not a personalized prescription. Pregnancy, lactation, and pediatric use require specialist supervision.
Protective guidance only — when to avoid or use with caution. This block deliberately omits pregnancy, lactation, and pediatric dosing: any such use must be managed by a qualified TCM practitioner or appropriate specialist.
脾虚气弱，精滑及热病伤津者忌用。孕妇慎用。
本品为含水硅酸镁矿物，不可吸入粉尘。孕妇及脾虚者慎用。现代制剂应注意质量，防止滑石粉污染。
脉洪滑，面赤身热头晕，不恶寒但恶热，舌上黄滑苔，渴欲凉饮，饮不解渴，得水则呕，按之胸下痛，小便短，大便闭者，阳明暑温，水结在胸也，小陷胸汤加枳实主之；热入营中者，加银花滑石之属。
@misc{bencaodian-hua-shi,
author = {{Bencaodian Editorial}},
title = {Huá Shí 滑石 (Talcum) — Talcum},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/hua-shi},
urldate = {2026-04-17},
note = {CC BY-SA 4.0}
}© Bencaodian Editorial · Licensed under CC BY-SA 4.0
滑石为天然含水硅酸镁矿物，内服经肠道吸附水分与毒物、外用形成保护膜，药理示其清热利湿、吸附保护与抗菌辅助作用。
Huashi is natural hydrated magnesium silicate (talc); orally it adsorbs fluid and toxins in the gut, topically it forms a protective film. Actions include clearing heat-damp, adsorbent protection and antibacterial support.
《中国药典》规定滑石不得检出石棉纤维，入煎剂须包煎。
Chinese Pharmacopoeia requires talc to be free of asbestos fibers; decoct in a cloth bag.
六一散（滑石:甘草=6:1）为清暑利湿经典方。
Liu Yi San (talc:gancao = 6:1) is the classical summer-heat damp-resolving formula.
外用含石棉的滑石存在致癌风险；药用滑石须严格检测纤维杂质。
Asbestos-contaminated talc carries carcinogenic risk; medicinal talc must be tested for fibrous impurities.
This section is provided for academic reference only and does not constitute medical advice.