Benefits/Features Uni-Pharma Repel Spray Odorless Insect Repellent with Hyaluronic Acid 100ml is an odorless anti-mosquito spray for children and adults. It keeps insects away without smelling and at the same time moisturizes (with hyaluronic acid). The insect repellent action of Repel lasts for 8 hours and gives the skin the necessary protection from insect bites. Its active ingredient is IR 3535, a repellent of natural origin, which is also recommended by the World Health Organization and the European Commission for the prevention of bites from familiar insects and species that one encounters when traveling to tropical countries. Therefore, Repel is ideal for those who plan to travel. IR 3535 is an insect repellent body spray that repels and protects against a wide range of insects: mosquitoes, including the tiger mosquito, gnats, fleas, ticks, flies, bees, wasps. Repel is odorless, preservative-free and paraben-free