For aromatherapy use. For all other uses, carefully dilute with carrier oil prior to use. Please consult an essential oil book or other professional reference source for suggested dilution ratios.
Peppermint blends well with essential oils like Basil, Black Pepper, Eucalyptus, Juniper, Lavender, Lemon, Pine, Tea Tree, etc.
A few drops can be mixed with carrier oils to make a great aromatherapy massage oil.