Find out everything you need to know about checking for head lice
Hedrin 4% is a medicine containing dimeticone and is available as a lotion and a spray from pharmacies nationwide. Always read the label
Keep hair away from sources of ignition, especially naked flames and burning cigarettes, whilst being treated with Hedrin 4% lotion. Treated hair can readily burn if ignited. Take care if accidentally spilled as Hedrin may cause a slip hazard.
Hedrin Liquid Gel is slippery. Baths, shower cubicles etc may become slippery when using or washing the hair. Take care. Wash any residues away with detergent and warm water.
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Head lice have a unique strategy of water management. Instead of producing urine they eliminate excess water via tiny passages in their exoskeleton called spiracles. The active ingredient dimeticone, a silicone oil, disrupts this process of water management by coating the lice, causing them to become permanently immobile, and blocking the spiracles preventing them from getting rid of excess water. As a result, any lice that have recently fed suffer from death by gut rupture and, the ones that haven’t, die of starvation.
Like all insects, head lice are covered by a waxy protective coating. It is this waxy layer that helps the louse maintain its delicate internal water balance, preventing too much water from evaporating.
The Activdiol® in Hedrin Treat & Go and Protect & Go works dissolving away this waxy cuticle, causing death by dehydration.
Activdiol is available in treatment strength (5%) or protection strength (1%).
Treatment of head louse infestation with 4% dimeticone lotion: randomised controlled equivalence trial
Randomised, Controlled, Assessor Blind Trial Comparing 4% dimeticone Lotion with 0.5% Malathion Liquid for Head Louse Infestation
The mode of action of dimeticone 4% lotion against head lice, Pediculus capitis
Treatment of head lice with dimeticone 4% lotion: comparison of two formulations in a randomised controlled trial in rural Turkey
Dimeticone 4% liquid gel found to kill all lice and eggs with a single 15 minute application
1,2-Octanediol, a Novel Surfactant, for Treating Head Louse Infestation: Identification of Activity, Formulation, and Randomised, Controlled Trials
Single application of 4% dimeticone liquid gel versus two applications of 1% permethrin crème rinse for treatment of head louse infestation: a randomised controlled trial
Prevention of head louse infestation: a randomised, double-blind, cross-over study of a novel concept product,1% 1,2-octanediol spray versus placebo