Essential oil Oregano has immune-boosting properties and a positive effect on energy. Essential oils are the volatile aromatic compounds of medicinal plants, flowers, fruits, etc. Physalis essential oils are botanically and biochemically defined. They are chemically untreated, unmodified, uncut, undiluted, unrectified, and unreconstituted. How to Use: Oral administration: 1 to 2 drops twice a day. Take diluted in 1 tablespoon of honey or as an herbal infusion. Cutaneous route: massage, bath: 1 to 2 drops per 10 ml of vegetable oil. Diffusion: 2 to 5 drops depending on your preference or the size of the room.