Although fragrance is a little bit outside the boundaries of clothing, I am coming up on two years of owning two bottles of Channel n 5- one is a spray of eau do toilet (a lower concentration of fragrant oil, thus less expensive); the other is pure perfume (expensive!).
Perfume is to be kept out of direct sunlight in a dry environment, so not the bathroom or on top of your dresser- and even under the best of conditions, they only really last two years.
(I have been called an old lady because of my affection for Channel n 5, but I just can’t help the love! This is the fragrance that launched the modern perfume and to this day, the flowers are grown on one particular farm, harvested and refined all in small town France. Love.)