Great skin tonics, citrus oils, stimulate the microcirculation, balance skin oil production, and support tissue regeneration. They are wonderful for dull skin. In hair care, citrus oil helps balance the production of sebum. They refresh, invigorate, and cleanse the scalp. Citrus oil brightens and warms your mood, calms, encourages, clears the head, increases mental alertness, improves memory, and reduces stress and headaches.