Let the anti-viral and anti-bacterial properties of this special blend of essential oils bolster your immune system against infection. before traveling by air, train, bus or even subway, sheild against airborne bacteria or whenever you feel the start of a cold or flu. Massage the back of your neck & shoulders with the Immune Booster Salve. Organic and wild-crafted essential oils include Lemon, Ravensara, Clove Bud, T-tree, Patchouli and Cinnamon Bark. Salve base is made of organic hemp seed oil, unrefined beeswax and jojoba.