... be used for relaxation or rejuvenation. In general, Lavender oil is inhaled for sadness, depression, anxiety, tension, panic ... , relief from insect bites and inflammatory conditions. Use lavender oil in a bath for muscle spasms, relaxation, and fatigue. ... arthritis and muscle spasms. Whatever ails you, Lavender essential oil can probably help. For: Relaxation Depression Muscle Spasms Headache Sleep ...