Assessment of a Cosmetic Product Effect on the Host/Microorganism Relationship in Acneic Subjects

The aim of the study is to understand the structural and functional modifications of the host, the microorganisms, and their interactions (host/microorganism relationship) before and after the RV3278A - ET0943 product application

Inclusion Criteria:Related to the population:- Subject aged between 12 to 25 years includedRelated to diseases:Subject having acne lesions on the face, with GEA (Global Acne Evaluation) score on the face is assessed as 2 (mild) or as 3 (moderate), on a scale ranged from 0 (clear- no lesion) to 5 (very severe)Subject having at least 20 open-comedones of about 1 mm in diameter on the face and possibly extractableSubject having a predominance of non-inflammatory acne lesionsExclusion Criteria:Related to diseases:Subject having comedones only on the nose wingsSubject with any other dermatological disease than acne or skin characteristics (like scar, tatoo) on the face liable to interfere with the study according to the investigator's assessmentSubject with an acute or chronic disease, or history of disease liable to interfere with the study data or considered by the Investigator hazardous for the subject or incompatible with the study requirementsSevere form of acne (Acne conglobata, Acne fulminans or nodulokystic acne) or acneiform induced rashes according to the investigator's assessmentClinical signs of a hormonal dysfunction or of a hyperandrogenismSolar erythema on the face due to excessive UV exposurRelated to the treatments/products:Any previous/concomitant treatment or product considered by the Investigator liable to interfere with the study data or incompatible with the study requirements or hazardous for the subject