Spikenard oil can be used in aromatherapy by diffusing it in a room or adding a few drops to a warm bath. It can also be applied topically to the skin when diluted with a carrier oil, such as coconut or jojoba oil. Spikenard oil is believed to have calming and grounding properties, and can be used as a natural remedy for stress, anxiety, and insomnia. It is also used in some traditional medicines for its antibacterial and anti-inflammatory properties.