This determines the longevity and intensity of the scent.
- Parfum (Extrait de Parfum): The highest concentration (20–30% oil). It is the most expensive, has a rich scent, and can last up to 24 hours.
- Eau de Parfum (EDP): The most popular choice (15–20% oil). It provides a deep scent that lasts 6 to 8 hours, making it ideal for evenings or cold weather.
- Eau de Toilette (EDT): A lighter concentration (5–15% oil). It is refreshing and lasts 3 to 5 hours. Best for daily office wear or summer days.
- Eau de Cologne (EDC): Very light (2–4% oil). It usually features citrusy notes and lasts only around 2 hours.