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Permethrin is a medication and an insecticide. [6] [7] As a medication, it is used to treat scabies and lice. [8]It is applied to the skin as a cream or lotion. [6] As an insecticide, it can be sprayed onto outer clothing or mosquito nets to kill the insects that touch them.
Insecticides used for the treatment of head lice include lindane, malathion, carbaryl, pyrethrum, piperonyl butoxide, permethrin, phenothrin, bioallethrin, and spinosad. Many of the pediculicides in the market are either not fully effective or are ineffective when they are used according to the instructions.
Phenothrin, also called sumithrin and d-phenothrin, [2] is a synthetic pyrethroid that kills adult fleas and ticks.It has also been used to kill head lice in humans. d-Phenothrin is used as a component of aerosol insecticides for domestic use.
Some differences in the chemistry between pyrethrins and synthetic pyrethroids have the result that synthetic pyrethroids have relatively longer environmental persistence than do pyrethrins. Pyrethrins have shorter environmental persistence than synthetic pyrethroids because their chemical structure is more susceptible to the presence of UV ...
Pyrethrum was a genus of several Old World plants now classified in either Chrysanthemum or Tanacetum which are cultivated as ornamentals for their showy flower heads. Pyrethrum continues to be used as a common name for plants formerly included in the genus Pyrethrum .
An alternative is the combination of pyrethrins and piperonyl butoxide, in a topical application, which include the brands Licide, and A-200, Pronto and RID shampoos. [ 14 ] [ 18 ] These medications are safe and effective when used exactly according to the instructions in the package or on the label. [ 6 ]