From the Manufacturer:
For aromatherapy use. For all other uses, carefully dilute with a carrier oil such as jojoba, grapeseed, olive, or almond oil prior to use. Please consult an essential oil book or other professional reference source for suggested dilution ratios. Natural essential oils are highly concentrated and should be used with care.
Mixes Well with basil oil, lavender oil, lemon oil, and marjoram oil.