Costus Root Pure Essential Oil. Costus Root Essential Oil — Breath of the Sacred Earth. One drop carries the gravity of centuries, grounding the spirit and awakening inner calm. Plant Part: root. High in the remote folds of theTibetan Himalayas, where wind prayers rise like incense to the sky, the roots ofCostus (Saussurea lappa) lie hidden — ancient, resilient, steeped in mountain silence.
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