Test. Transforms fragrance infused with natural essential oils in to a mist (Air wick essential mist contains natural essential oils that are automatically transformed into a fine mist). Test. 1 refill lasts up to 45 days (based on lowest intensity setting). Nothing but the ingredients you need. Great Fragrance: Contains natural essential oils. Free from sans Phthalates, acetone. What's Inside and What it does: C 13-14 isoperaffin, C 11-13 isoparaffin, PPG-2 methyl ether. Carry the fragrance.