LiftActiv B3 in Post Inflammatory Hyperpigmentation (PIHP)

Inclusion Criteria: * Multiethnic subjects * 18 to 50 YO * Phototype III-VI * All skin types * 50% with sensitive skin (declarative) * Symmetrical mild to moderate facial post-acne PIHP lesions with IGA scale * Mild active acne (less than 10 retention and 5 inflammatory lesions) * Agreeing not to change their lifestyle during the study period. * Capable of reading the documents presented to them, of adhering to the study regulations and accepting the limitations. * Available to follow the study * Agreeing to participate and having signed the informed consent Exclusion Criteria: * Moderate to severe active acne * Patients under topical or systemic retinoids * Patients under systemic immunosuppressants * Patients under active treatment of PIHP (including topicals or procedures) within the last 3 months * Patients treated with facial procedures within the last 3 months * Pregnancy * Patient with a recent change in contraception (since less than 6 months) * Known allergy to any component of tested product * Not presenting with the conditions needed to comply with the protocol. * Unable to give their informed consent * Not available to follow the study in its entirety