How does First Defence Nasal spray work?

When used at the 1st signs of a cold, First Defence nasal spray acts at the back of the nose directly where the cold virus takes hold and starts to develop (that's why it is a nasal spray). It traps, inactivates, and helps your body naturally remove the cold viruses, to reduce the risk of the initial infection developing into a full-blown cold. When used at the first sign of cold symptoms, Vicks First Defence nasal spray has been clinically proven to help stop a cold ini its tracks and not develop into a full-blown cold. It can also reduce symptom severity and duration.