A hair oil serum for perfectly smooth and protected hair during styling | Let your dry and stressed hair shine again. The nourishing oil serum Wella Professionals Ultimate Smooth Oil restores their lost beauty in just 30 seconds. It deeply nourishes them, gives them una silky softness, una dazzling shine, and also combats frizz. Additionally, with protection from UV rays and temperatures up to 230°C, your hair will remain protected during styling and throughout the day.