The only difference between these two products is the concentration of essential oils. An Eau de Toilette will have between 8% and 12% concentration of essential oils whereas an Eau de Parfum has between 12 and 18%. An Eau de Cologne generally has a slightly lower concentration of essential oils compared with an Eau de Toilette.
Typically an Eau de Parfum is expected to last up to 5 hours whilst Eau de Toilettes will tend to last around 3-4 hours.
