Autan contains a new patented active ingredient bayrepel developed in the laboratories of bayer which belongs to a new generation of insect repellents autan active is effective for up to 8 hours when applied evenly to the skin autan protects you from mosquitoes midges ticks and horseflies autans unique formula is non sticky non greasy has a pleasant fragrance and has been designed to stay effective for longer all the above products are safe for use by adults and children over the