The perfume is very long lasting because it is light and stays in the air. Other air fresheners are based on water which makes the perfume heavy and fall down and makes the car dirty. The pumps are also designed to spread the perfume in a very long range. Special designed formula for sprays so that it can be used inside the car, as it doesn’t contain solvents. Solvents are present on water based perfumes which could cause damages to the car. The duration of sprays depends on the use but can stay for one hour. Spray products allows the maximum control on the regulation of the perfume, it is the user that decides the amount of perfume in the car. Each individual bottle is labeled.