Approved by the Hospital for Tropical Diseases for travellers visiting areas with no known risk of malaria or other insect transmitted diseases. The range contains 20% IR3535, which is an effective chemical repellent, in fact, IR3535 is proven to be at least as effective as DEET in concentrations up to 30%. There are a variety of formats available to suit you every need & they are ideal to be used in the UK & non-tropical areas such as the Europe & the Mediterranean.