What Is a Decant
A decant is basically a small amount of perfume transferred from the original bottle into a smaller spray bottle. They are usually sold in sizes like 3 ml, 5 ml, or 10 ml and are one of the easiest ways to properly try a fragrance without buying a full bottle.
Trying Before Buying
In my opinion, decants are especially useful for expensive niche perfumes. Smelling a fragrance once in a store is not always enough to understand whether you actually like it. With a decant, you can wear the perfume for a few days, test its performance, see how it develops on your skin, and understand whether you would really use it in your daily life.
Carrying It With You
Decants are also useful if you already own the full bottle. Instead of carrying a heavy or expensive bottle with you during the day, you can fill a small decant and use it to refresh your fragrance whenever you need. Of course, the word “decant” does not only refer to the perfume liquid itself. The small empty bottles used for transferring perfume are also commonly called decants, and that is what I mean here.