Perfume concentrations refer to the amount of perfume oil mixed with alcohol or water in a fragrance formulation. These concentrations are crucial in determining both the longevity of the scent on the skin and its sillage, which is the trail of scent left in the air when someone wearing the fragrance moves.

Types of Perfume Concentrations:

Eau de Parfum (EdP): Typically contains 15-20% perfume oil. It is one of the most popular and widely used fragrance types, known for lasting about four to five hours and having noticeable sillage without being overwhelming.

Eau de Toilette (EdT): Contains about 5-15% perfume oil. It is lighter than EdP, usually suitable for day wear and warmer weather, with a longevity of about three to four hours and moderate sillage.

Eau de Cologne (EdC): This type has about 2-4% perfume oil and is even lighter, often used for a freshening splash, with a shorter longevity up to two hours and minimal sillage.

Parfum or Perfume: The highest concentration, with 20-30% or even more perfume oil. It offers the longest longevity, typically lasting all day with pronounced sillage that makes it ideal for special occasions and evening wear.

In conclusion, higher concentrations of perfume oil provide longer-lasting scent and greater sillage. Choosing the right perfume concentration depends on personal preference, the occasion, and the desired intensity of the fragrance.