The hair care for you if you want to maintain superior blonde results

73% less breakage*

Achieves up to 5 levels of lift whilst protecting the bonds of the hair during the service for minimal breakage and damage

Ideal for mobile application

Part of Wella's new Styling Finish Line

OSiS Session Extra Strong Hold Hairspray 500ml latestproducts The hair care for youAllowing you to maintain long lasting styles without compromise, OSiS Session is an extra strong hold hairspray that protects hair against humidity, heat and wind, whilst adding a luxurious finish for shiny hair that can be brushed out easily without leaving a flaky residue.