Antifog additives are primarily used in food packaging and agricultural greenhouse films. Fog formation on polymer films can reduce sunlight penetration in greenhouses, hindering plant growth. Additionally, water droplets formed on the film can act as lenses, focusing sunlight on plant leaves and causing burn damage. In food packaging, fogging reduces product visibility and can lead to food spoilage. Antifog masterbatches are used to prevent fog formation in these applications.