The shelf life of perfume is generally around three to five years from the date of production. You must store perfume properly to ensure quality over a long period of time.
While keeping perfume in the bathroom might seem to make sense in terms of access, the bathroom is actually a bad choice for storage. Perfume lasts longest stored out of direct sunlight, away from heat and at a temperature that remains consistent. When it comes to the scent of a fragrance, body chemistry and the notes present in the perfume determine the length of time that it lasts on one's skin. In general, citrus and fruity fragrances tend to last for a shorter length of time than fragrances with musk notes.