Neem is considered to be the "miracle herb" and has been used in the Ayurvedic tradition for 5,000 years. The oil is cold pressed from the seeds of the neem trees. No solvents or chemicals are used during extraction. A little goes a long way.  You may also add it to your favorite shampoo, massage oil or lotion, and use for vinegar hair rinse, teeth, even wounds. You can also debug your plants adding it to a mister bottle.