Add new scss file

I am trying to add multi language feature in ionic 2 app. I want to load separate scss file when user choose language. I mean i want to create 2 files. first scss file is for left to right direction and second is for right to left direction. But i am confused how should i load these files. As i dont know how and where ionic load these files. Secondly i also wanted to know is that is it good approach to load these files? or there is any other optimise way also?