Fragrance is incredibly misunderstood.
Even the name confuses people. Many think cologne is for men and perfume is for women, but those terms merely refer to the concentration of scent oils in the fragrance, which is itself the basic, gender-neutral term.
Go forth and smell better.
While fragrance never “goes bad,” it will start to smell differently than the perfumer intended.
It’s actually impossible to tell by sniffing a piece of paper how a fragrance will smell when mixed on your skin. Additionally, a fragrance can and will smell slightly differently on different people’s skin.
Apply to naturally warmer body areas like your neck and chest, as this will allow the scent to dissipate evenly throughout the day. Cardinal rule: Don’t overdo it.