Flatliner - Hair Serum Service 200ml by Schwarzkopf Professional is an innovative serum designed to protect and enhance hair during aggressive treatments. Its advanced formula creates a una protective barrier that significantly reduces damage from heat and chemicals, improving the resilience and shine of the hair fiber. Ideal for professionals and haircare enthusiasts, it ensures a una healthier, softer, and easier-to-comb mane, highlighting natural beauty with lasting and visible results.