Comparative Study for the Evaluation of Two Medical Devices on the Treatment of Head Lice Infestation

Inclusion Criteria: Healthy subject; Sex: male or female; Age: 2 years and above; Subject with a slight to moderate lice infestation (according to EU norms); Subjects with various hair type (from 1 to 3C - hair scale) and hair length (from short to mid length hair, not exceeding shoulder); Documented oral informed consent for all subjects, including minors, given freely and expressly before the start of the study; Written informed consent for subjects ≥18 years or legal guardian for subjects < 18 years given freely and expressly before start of the study; Written assent for subjects ≥12 to <18 years; Subject/Subject's legal guardian is psychologically able to understand the study related information and to give written informed consent; Females of childbearing potential must have a negative pregnancy test before the beginning of the study. Exclusion Criteria: Pregnant (confirmed by pregnancy test for women of childbearing potential) or nursing woman or planning a pregnancy during the study; Subject who had been deprived of their freedom by administrative or legal decision or adult subject who is under guardianship; Subject in a social or sanitary establishment; Subject in an exclusion period from a previous study or who is currently participating in another study on hair/scalp or who participated to another clinical study on hair/scalp within 3 months before first visit; Subject suspected to be non-compliant according to the investigator's judgment; Subject with curly or frizzy hair (from 4A to 4C in the hair type scale); Subject with hair length below the shoulder; Subjects with more than 24 lice on the head. In terms of associated pathology Subject suffering from a severe or progressive disease or any other pathology that may interfere with the evaluation of the study results; Subject with a cutaneous disease on the studied zone (scalp and hair); Subject with severe scratches or open wounds/skin damages on the scalp (lice bites allowed however); Subject with a known or suspected allergy to any of the components/materials of the investigational devices, anti-lice comb or post-treatment shampoo; Subject who has diabetes (type 1 or 2); Subject with known or suspected immune deficiency or autoimmune disease. Relating to previous or ongoing treatment Subject undergoing a topical treatment on the test area or a systemic treatment with: anti-inflammatory medication and/or anti-histamines during the previous 2 weeks and during the study; corticosteroids during the 2 previous weeks and during the study; retinoids and/or immunosuppressors during the 3 previous months and during the study; any medication stabilized for less than one month. Subject who received an anti-lice treatment in the previous 2 months.