This blend of Cinnamon Leaf, Clove Bud, Eucalyptus radiata, Cold-Pressed Lemon & Rosemary Moroccan Essential Oils said to strengthen the immune system and fight respiratory infections, while smelling wonderful. The Highwaymen Blend is a great Blend to use in an Essential Oil Diffuser. It natural-like scent reminds one of the outdoors. It is both warm & comforting.