The main difference between Perfume, Eau de Parfum (EDP), and Eau de Toilette (EDT) comes down to the concentration of fragrance oils, which affects how strong the scent is and how long it lasts. Perfume—also called Parfum or Extrait de Parfum—has the highest concentration, usually 20–40%, making it rich, long-lasting, and ideal for special occasions or cooler weather. Eau de Parfum contains slightly less oil, around 15–20%, offering a strong but more wearable scent that typically lasts 6–8 hours, making it a popular everyday choice. Eau de Toilette has a lighter concentration, about 5–15%, giving it a fresher, softer scent that lasts around 3–5 hours—perfect for daytime, warm weather, or those who prefer something subtle. Understanding these levels helps you choose a fragrance that fits your lifestyle, budget, and desired intensity.