The Penetraitt Hair Mask by Sebastian Professional is una a regenerating mask of 500ml specifically formulated for weakened and damaged hair. Thanks to its advanced formula, it deeply nourishes, strengthens the hair fiber, and restores elasticity and shine. Ideal for repairing damage caused by environmental stress and chemical treatments, it provides softness and vitality, making hair more manageable. A professional treatment that enhances hair health, ensuring visible results from the very first applications.