Safety and Efficacy Study to Compare a 4% Dimethicone Foam and Nix Cream Rinse (1% Permethrin) in the Control of Head Lice

Inclusion Criteria: * 4 - 85 years of age * active head lice infestation of at least ≥ 10 live lice * short hair (hair no longer than 2 inches below the neck) or long hair (hair 2 inches below the neck to mid back) Exclusion Criteria: * had received or used an investigational new drug within the 30 days immediately preceding the study * used any form of head lice treatment whether prescription, over-the-counter, or a home remedy for at least fourteen days prior to their study visit * used topical medication of any kind on the hair for a period of 48 hours prior to the visit * had a history of allergy to rag weed, permethrin, or mineral oil, or had taken trimethoprim or cotrimoxazole at evaluation or during the previous four weeks * Female subjects that were pregnant or breast feeding