Bioequivalence Study for Benzyl Alcohol Lotion 5%.

Inclusion Criteria: * Healthy males or non-pregnant females aged 6 month or over with an upper age limit of 60 years. * Prospective participants upon examination are confirmed to have at least 3 live head lice (defined as lice adults or nymphs) and at least 5 viable appearance louse eggs (nits). * Prospective participants who give written informed consent or, if the participant is under 17 years of age, whose parent/guardian gives written informed consent to participate in the study. * Prospective participants who will be available for follow up visits over the 21 days following first treatment. * Prospective female participants (including female caregivers) of childbearing potential who are willing to provide a urine pregnancy test. * Prospective participants who agree not to shave their hair or use any other pediculicide, nit combing, or louse treatment method during the course of the study. Exclusion Criteria: * Prospective participants with a known sensitivity to any of the ingredients in benzyl alcohol lotion 5% (Hi-Tech Pharmacal Inc) or Ulesfia 5% (Shionogi Inc). * Prospective participants with a known history of irritation or sensitivity to pediculicides or hair care products. * Prospective participants with a secondary bacterial infection of the scalp (eg. impetigo/pyoderma) or have a secondary or long term scalp condition that could make it difficult to evaluate the extent and severity of an infestation or that would present a problem in the evaluation of respons…