An example of this is during a co-current flow setup, the product temperature is 10 to 20 °C below the air outlet temperature. Although the droplets could be exposed to high temperature during the drying process, the exposure time is extremely short. It is usually in the range of seconds or even milliseconds. Under such conditions, drug degradation is not anticipated. The spray drying technique was commonly perceived as a dehydration process used to prolong the lifespan of the product. At the same time, it has increasingly attracted the interest of scientists who wants to encapsulate drugs, extracts, aromatic oils, pigments, and flavors within different types of carriers such as polymeric nanoparticles (NPs), microparticles (MPs), and nanocomposite MPs.