How does Halley?

  • Halley Insect repellent lotion is formulated with pyrethrins.
  • Pyrethrins are natural compounds that are derived from the dried flowers of the pyrethrum (Chrysantemum cinerariaefolium).
  • Pyrethrins nullify the ability of insects to orient, causing them off into areas that your nervous system working again normally.
  • In the case of mosquitoes, the repellent effect of the pyrethrins is especially relevant since the alteration of the nervous system that may prevent locating a victim that itch to draw blood.



  • The pyrethrins have a long history of use in humans and animals, unique in its effectiveness and repellent qualities.
  • When used in normal patterns of use and in the right proportions, it is safe, and its effectiveness is optimal.


Why do mosquitoes bite?

  • The female mosquito needs the proteins present in human or animal blood in order to complete her reproductive cycle.
  • To locate its target, the mosquito uses a combination of senses: heat detection and chemical detection of certain stimulants such as water vapor and CO2. Heat is detected by the tarsus of the third pair of legs, water vapor and CO2 by the antennae.
  • The need to obtain blood turns mosquitoes into transmitters of diseases such as malaria, dengue fever, yellow fever or encephalitis, since, with successive bites, they inoculate parasites or viruses responsible for these pathologies.