Another potent chemical is ketones. A ketone is a chemical that can cause neurotoxic reaction. In high doses it can cause convulsions or a reverse of the desired therapeutic effect. Essential oils that contain higher levels of ketones are Cedar leaf, Hyssop, Cyprus, Caraway, Clove, Ginger. If you are allergic to any plant, herb it is only sensible to avoid that particular essential oil.
Some essential oils can be toxic to cats even when diffused.
Keep children and pets away from diffusers. For dry skin in winter -mix 3 drops of your favorite essential oils to 2 tablespoons of carrier oil, massage into your damp skin or mix it with lotion and apply liberally over body. Essential oils are oils or essences derived from parts of plants. They contain hundreds of biochemical. The oils are collected by either steam or water distillation extraction methods from leaves, petals, stem, bark , nut kernels, stalk, gum , resin and roots.