As with all essential oils, never use undiluted, in eyes or mucus membranes. Never take internally unless working with a qualified and expert practitioner. Always perform a patch test on an insensitive part of the body (after you have properly diluted theessential oil in an appropriate carrier oil).
There are some risks in using too much peppermint oil, including allergic reaction, heartburn, and headaches.
Children younger than 6 yours old do not tolerate peppermint essential oil well