Schwarzkopf Professional OSiS+ Flatliner Iron Serum is the perfect styling product for straightening hair, as it protects against heat damage from irons and keeps the hair straight, smooth and shiny.
This amazing formula features 200°C heat-proof ingredients, prolonging the period in which ironed hair stays straight and smooth, protected against humidity. OSiS+ Flatliner Iron Serum features hydrolyzed silk and wheat proteins, which provide a smooth silky finish, smoothing and reducing frizz from curly and wavy hair.
Direction of use
- On dry hair : Dry hair then spray over individual sections prior to use of hot irons
- On damp hair : Spray evenly over whole hair prior to blow-drying then iron the dry hair
- Slight wavy/medium thick hair : Dry or wet application
- Curly/coarse hair : Damp application
- Very curly/very coarse hair : Damp application, followed by dry application