An investigation of Essential Oils (Lavender, Tea Tree and Lemon) on human lice showed that Tea Tree was most effective.
In another study, all of these oils were found to be effective (blended with vinegar and water) in vitro against lice....
- Aniseed, Cinnamon leaf, Nutmeg, Peppermint, Tea Tree (Melaleuca alternifolia), Red Thyme
- Cinnamon, Clove, Eucalyptus, Geranium, Lavender, Lemon, Lemongrass, Rosemary, Thyme
In Jane Buckle’s, Clinical Aromatherapy, suffocating agents (carrier oils) such as olive, sunflower or vegetable oil can be effective if used for more than 12 hours.
According to Valerie Ann Worwood, an excellent preventative blend would be equal parts of Rosemary, Lavender, and Lemon. Add 2 drops to the final rinse after shampooing. If lice are present, the following blend should be rubbed well into the scalp and sit overnight: 27 drops each of Rosemary, Geranium and Lavender; add to 1 oz beeswax (melted) and 2 oz of Castor oil.
Please consider these guidelines for blending essential oils safely:
Health Effects of Lindane Exposure
Win the Fight Against Head Lice without Toxic Chemicals
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Resources:Complementary Therapies in Nursing and Midwifery, Volume 2, Issue 4, August 1996, Pages 97-101http://www.ncbi.nlm.nih.gov/pubmed/17662541?itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum&ordinalpos=2http://www.ncbi.nlm.nih.gov/pubmed/20496586
photo resource: flickr.com by albertogp123