Osis+ Style Sleek Flatliner hair straightening serum contains components resistant to temperatures up to 200 °C. It helps achieve significantly straighter and sleeker hairstyles that last up to 30% longer! Developed for use with a hair straightener, it contains ingredients resistant to temperatures up to 200°C, special protection of hair moisture allows you to achieve 30% longer-lasting results, perfect hair protection against the adverse effects of heat when ironing your hair.

Usage:Application on dry hair - suitable for wavy/medium thick hair. Wash your hair, dry it and spray it with OSiS Flatliner serum. For optimal results, apply the product to individual sections of hair before using a straightening iron.

Application on wet hair - suitable for wavy / thick hair. Wash hair, spray OSIS Flatliner serum evenly all over the head, then dry and use a straightening iron.

Combination application - suitable for very wavy / very thick hair. Wash your hair, spray OSIS Flatliner serum evenly all over your head, then dry and spray OSIS Flatliner serum again, then iron your hair.

Extra tip: if you want to create extra volume at the roots, use a straightener iron from a certain distance from the roots to leave them space. You can use the same procedure for the ends of the hair.

200 ml