Kill routine with OSiS Flatliner Iron Serum, an essential tool for giving straightened hair the extra care and protection it needs. With 200°C heat proof ingredients, this serum will provide flawless protection when you use hot styling irons. With OSiS Flatliner Iron Serum you can expect even results without any compromise. Ultra flat control, long lasting ultra flat shiny, silky looking, smooth and frizz-free hair are all guaranteed when you apply it to your hair thanks to the hydrolised silk and wheat proteins. Get inspired and creative with this product from the freshly inspired OSiS range. Flatliner Iron Serum has an OSiS Control Level of 3 for strong control, protection and style. Directions of use: Apply to dry hair prior to use of hot irons.