The Penetraitt Hair Mask by Sebastian Professional is a una regenerating mask of 500 ml, specifically formulated for weakened and damaged hair. Thanks to its advanced technology, it deeply nourishes the hair fiber, strengthening and restoring elasticity and vitality. Its intensive action reduces breakage and improves resilience, providing lasting softness and shine. Ideal for those seeking an effective professional treatment, it transforms fragile hair into visibly stronger and healthier locks.