Costus root oil is widely used in the fragrance and perfume industry due to its unique, earthy, and musky aroma. It serves as a base note in many high-end perfumes, adding depth and longevity to the scent. Additionally, it is utilized in aromatherapy for its calming and grounding properties, often helping to reduce stress and anxiety. In traditional medicine, it is applied topically to support skin health and address issues like inflammation or infections. The oil is also incorporated into cosmetic formulations for its potential to enhance skin texture and appearance.