Hedrin 4% Lotion is a head lice treatment containing dimeticone, a non-pesticide ingredient that works by coating the lice and disrupting their ability to manage water, causing them to dehydrate and die. This physical mode of action means lice are unlikely to develop resistance. The lotion is applied to dry hair, ensuring the scalp and all strands are fully covered, and left for the recommended time before washing out. A second application is usually needed after seven days to kill any newly hatched lice. Hedrin 4% Lotion is suitable for adults and children over 6 months and is gentle on skin and hair.
The active substance is Dimeticone 4% w/w. Dimeticone is not a chemical poison. It works by a physical process which effectively covers and drowns the louse.
The other ingredients are Cyclomethicone 5. Cyclomethicone 5 is a carrier ingredient which evaporates after application leaving the active ingredient to kill the lice.
You should not use Hedrin if you are allergic to either of the ingredients in this medication.
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