Many essential oils may be beneficial for mental health. The most effective include:  lavender oil bergamot essential oil lemon essential oil peppermint oil rose oil ylang ylang oil orange essential oil frankincense essential oil  However, more peer-reviewed research or government-funded research investigating the efficacy of essential oils for mental health is needed. Other essential oils that are good for mental health include jasmine essential oil, lemon oil, sweet orange essential oil, and chamomile oil.