Mix together 2 drops of thyme essential oil, 3 drops of lavender oil, 3 drops of rosemary oil, 3 teaspoons of jojoba oil, and 20 ml of rapeseed oil. Massage your scalp with this hair tonic for at least half an hour and wrap a warm towel so that the oil is nicely absorbed into the scalp. Regular massage with this oil improves blood circulation in the scalp and imparts luster to hair.