Melaleuca alternifolia Ingredients: 100% pure tea tree oil Aroma: Potent, warm, spicy Attributes: Cleansing, purifying, renewing Extraction Method: Steam Distilled from leaves and twigs Purifying Room Blend: Add 1 drop each of tea tree oil and grapefruit oil, along with 10 drops of lemon oil to a diffuser and enjoy. Physical Characteristics: Specific Gravity: 0.888-0.909 Refractive Index: 1.475-1.482 NOTE: Dropper insert is not included with the 16 oz. size bottles. NOW® Essential Oils are analytically tested for identity, purity and adulteration to assure the highest quality. For aromatherapy use. For all other uses, carefully dilute with a carrier oil such as jojoba, grapeseed, olive, or almond oil prior to use. Please consult an essential oil book or other professional reference source for suggested dilution ratios. Natural essential oils are highly concentrated and should be used with care.