The difference between Parfum, EDT, EDP, EDC and Eau Fraiche is related to the concentration of perfume essentials. The more concentrated a perfume is, the more it will last on your skin
It is the strongest fragrance available. Also known as Extrait de Parfum or pure perfume consists of a 15-40% concentration of perfume essence however concentration is generally between 20% to 30% for most parfums. This means that not only do you need to use less, but also that the fragrance lasts longer, typically for up to 6 to 8 hours, depending on skin type. People with sensitive skin may do better with parfums as they have far less alcohol than other fragrance types and therefore are not as likely to dry out the skin.
EDP (Eau de Parfum)
It is lighter than Perfume, with an 15-20% concentration, but still has long lasting characteristics, from 4 to 5 hours. It is less expensive than pure perfume. Eau de Parfum is one of the most common fragrance types and is suitable for everyday wear. I like my fragrances to be bold and last so I will buy EDP or above. I find that if I buy an EDT, I have to spray too often and typically will only last me 2 to 3 weeks per bottle.
EDT (Eau de Toilette)
It is lighter than EDP, with a 5-15% concentration of the essence. It usually lasts for 2 to 4 hours. It is cheaper than Eau de Parfum and is one of the most popular types of fragrance available. Eau de Toilette is considered by some to be for day wear while Eau de Parfum is considered night wear.
EDC (Eau De Cologne)
It is lighter than EDT, often referred to just as Cologne and has the greatest dilution of fragrances with a 2-6% concentration of perfume essence. It usually lasts for 2 hours. EDC generally comes in larger bottles and more of the fragrance needs to be used.
Eau Fraiche on the other hand will last for the shortest duration. It usually lasts for 1 to 2 hours. While Eau Fraiche has a low fragrance concentration, it does not contain a high amount of alcohol. Along with the fragrance, the remainder of Eau Fraiche is mostly water.