From the moment the product is sealed up until the moment it expires, 3 years go by. However, once the packaging is opened, the duration of use (PaO: period after opening) varies. The PaO is indicated on each product and is represented by the shape of an open jar on which the number of months not to be exceeded is printed. It is also advised to always store our products in a clean area, away from any heat sources (radiator, sunlight...). Some products (creams and lotions) are not compatible with temperatures above 25°C.