Randomized Controlled Trial Comparing Efficacy and Tolerance of Four Pediculicides

Inclusion Criteria: * Subject-male or female, child \> 3 years and adult * Pediculosis of scalp, confirmed by the identification of minimum 5 live lice with a fine-tooth comb * Negative urine pregnancy test before inclusion for women of childbearing potential * Use of a contraceptive method by hormonal contraceptives or IUDs or tubal ligation or condoms for women of childbearing potential * Subject agreeing to participate in the study with written informed consent for participation * Written consent of both parents for the minor patients. Exclusion Criteria: * Children under 3 years. * Woman pregnant or lactating or without contraception * Use of a pediculicide or lenticide treatment within 2 weeks before entry into the study * Subject with known hypersensitivity to any component of the tested products * Subject who participated in a clinical study in the 3 months prior to inclusion * Ongoing treatment potentially interacting with the treatment under study (other pediculicide products) * Subject undertreatment susceptible to influence the evaluation of the trial (including trimethoprim-sulfamethoxazole). * Severe medical or psychiatric illness considered by the investigator as potentially dangerous to the subject or incompatible with the conduct of the study * Asthma * Subject unable for linguistic or psychiatric reasons to understand the information and give informed consent * Subject refusing to give written consent * Subject deprived of his liberty by administrative or judicial decision, or guardianship * Patient hospitalized in a medical or social facility for another reason that biomedical research