Similar to our highly scented Soy Candles, Scent Unikue Car Freshener Refills are made from premium fragrance oils and can be used with any Scent Unikue Car Freshener diffuser bottles. The fragrance will slowly diffuse to give long lasting scent and ambiance in car, shoe cupboards or any wardrobes. We have an extensive fragrance range available in Car Freshener Refills. Each Car Freshener Refill is 50ml in size and comes in an easy pour recyclable bottle. Each 50ml refill will fill the Car Freshener bottle up to 3 times! As each fill will last a minimum of 3 months, a single 50ml refill will last in excess of 9 months!