Yes, lavender oil can help to suffocate and repel these parasites (but not their eggs). The mixture of oils gets stuffed into the adult lice breathing tubes, preventing them from breathing, and they die. Keep in mind that this is not 100% effective, of course, just like many other treatments and remedies.
Essential oils for lice and persistent management of the hair and scalp combine to. 3 ounces of extra virgin olive oil; 5 drops eucalyptus essential oil; 5 drops. If you are killing lice on a child under age 3 replace peppermint with geranium.. and your child miserable, I promise, and they aren't as effective in removing nits.