Flatliner - Hair Serum Service 200ml by Schwarzkopf Professional is an innovative serum designed to transform dull and damaged hair. Its lightweight formula intensely nourishes, providing softness and a flawless smooth effect without weighing it down. Enriched with regenerating active ingredients, it protects against external aggressions and prevents frizz, ensuring shine and ease of styling. Ideal for those who desire silky, healthy, and modern hair, it represents the perfect solution for una professional beauty routine at home.