Lavender: This essential oil has a soothing, sedative effect, which calms nerves, relaxes muscles, eases anxiety and helps promote sleep. Sweet mandarin A sedative and calming essential oil so useful for insomnia, shock, anxiety, stress-related problems Frankincense This relaxing essential oil is useful for anxiety and insomnia, irritability and stress related conditions Roman chamomile A calming sedative so useful for insomnia.