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.