Penetraitt Shampoo by Sebastian Professional is a regenerating treatment of 250 ml, formulated to strengthen and deeply nourish weakened hair. Thanks to the exclusive blend of active ingredients from una, it promotes the regeneration of the hair fiber, leaving hair soft, vital, and visibly healthier. Its lightweight texture gently cleanses without weighing down, ensuring a una lasting feeling of freshness. Ideal for those who wish to regain strength and shine in a professional and long-lasting way.