Essential oils in their pure state are very highly concentrated and should not be used neat or directly on the skin. When using essential oil, you should always dilute the oil with a high quality carrier oil for massage or application. For most single applications you will only need one drop of essential oil to 1/5 teaspoon of a carrier oil.
Carrier oils come from three major groups. Vegetable, nut or seeds. Most oils are obtained from the seeds or nuts of the plants and have great nutritional and therapeutic properties. These plant have been grow all over the world. There are hundreds of different plant species found to have oil bearing properties. Within these plants, there are a key few carrier oils that are considered royalty in the world of oils. They are Black Cumin Seed, Grape Seed, Sweet Almond, Pumpkin Seed and Cherry Seed. When used for massage or aromatherapy, you should only use cold pressed oils from a reputable source and should never use oils purchased from grocery store shelves that may be overly processed and contain chemicals used during manufacturing.
The following is a suggested guideline of measurement:
2-5 drops of essential oil to 1 teaspoon of a carrier oil.
4-10 drops of essential oil to 2 teaspoon of a carrier oil.
6-15 drops of essential oil to 1 tablespoon of a carrier oil.
8-20 drops of essential oil to 4 teaspoon of a carrier oil.
10-25 drops of essential oil to 5 teaspoon of a carrier oil.
12-30 drops of essential oil to 2 tablespoon of a carrier oil.