Ozone friendly aerosol spray with 20% DEET for medium protection. The Insect Repellent Factor is a quick and easy way to choose what repellent you need to protect yourself from mosquitoes midges and other biting insects. The higher the IRF?, the better the protection. Also available in Sensitive Skin (IRF2), Natural (IRF3) and Maximum (IRF4). Features & Benefits Up to 8 hours medium protection. For use in countries with no known risk of malaria or other insects transmitted diseases. Ideal for home and short haul beach holidays. For adults and children from 3 years.