Car Air Freshener - 5 BOOSTER Aromatherapy Blend Refills of 100% Pure Sweet Basil, Lavender & Rosemary Essential Oils 5 refill Aromatherapy blend of 100% pure essential oils: BOOSTER - Sweet Basil, Rosemary and Lavender Using essential oils is a natural alternative to common synthetic air fresheners No toxins, chemicals, additives or artificial fragrances Blended for a balanced and invigorating air freshener experience Naturally eliminates all types of odors: pet, smoke, mildew, food and more