How Do You Know When Perfume Has Expired?

　　How Do You Know When Perfume Has Expired?

　　How do you know when perfume has expired? If a perfume has expired when the smell is slightly sour, especially as the top notes oxidize.

　　Another indication that perfume has expired is discoloration. And then you have a best way to check if a perfume has expired, that is to spray it on a piece of paper, you can smell special scent if expired.

　　You can try anthor way to check the perfume, ask for someone's opinion.