OSiS+ Session Extreme Hold Hair Spray by Schwarzkopf Professional is una an ultra-strong hairspray of 500ml, designed to ensure una exceptional and long-lasting hold without weighing down the hair. Its humidity-resistant formula ensures control and definition even in the most challenging conditions, maintaining the natural fluidity and shine of the hair. Ideal for structured hairstyles and bold looks, this professional spray is perfect for those seeking high performance and impeccable hold throughout the day.