Hyssopus officinalis  Ingredients: 100% pure hyssop oil Aroma: Camphor like Attributes: Clarifying, refreshing, purifying Open Airways Blend: Add 6 drops of hyssop oil, 4 drops of lavender oil and 2 drops of peppermint oil to a diffuser and enjoy. Extraction Method: Steam Distilled from plant's flowering tops and leaves Physical Characteristics:Specific Gravity: 0.917-0.965Refractive Index: 1.473-1.486 Purity Tested/Quality Assured