The active ingredient in Mosi-guard Natural is Citriodiol, a naturally occurring extract of lemon eucalyptus oil distilled from the eucalyptus citriodora tree (corymbia citriodora), which is a renewable resource. Leading authorities worldwide now recognise Citriodiol’s first-rate efficacy making it the only plant-based repellent with this level of accreditation. Mosi-guard Extra has been extensively tested and under field conditions in Tanzania, Malaysia, Bolivia and against biting midges in Scotland. For use by all the family. Use Mosi-guard Extra in high and low risk areas where malaria is present. Kind to your skin. The active ingredient in Mosi-guard Extra provides powerful and effective protection for over 10 hours. Unlike chemical based repellents, Mosi-guard Extra can be used on all members of the family including small children over 3 months and will not damage plastics or synthetic fabrics.