One of the primary advantages of using wine toppers is their ability to preserve the freshness of an opened bottle. As soon as a bottle of wine is exposed to oxygen, it begins to oxidize, which can alter its taste and aroma. However, by using a wine topper, you can significantly slow down this process. Toppers create an airtight seal, preventing excessive air from entering the bottle and reducing the risk of spoilage. This means you can enjoy your favorite wine over multiple sittings without worrying about its quality deteriorating.