A blend for a diffuser: 2 drops of Lemon, 2 drops of Rosemary, 2 drops of Lavender. For use in a cold-air diffuser which requires a small amount of water added and 4-6 drops of essential oils. Never pour essential oils direct or undiluted in water or to your skin: mix a few drops of essential oil in a base oil, whole milk or cream, and add it to bath water, or a shower gel. 5 to 10 drops of essential oil are sufficient per 10ml of base oil.