Garnier Olia 7.0 – Dark Blonde baks Garnier August 18, 2015 Garnier Olia 7.0 – Dark Blonde : This is my favorite hair color. If your hair is brown? Do you want a different hair shade? Do you want to end your hair blond glow? You can use this hair dye. If your hair light brown hair color is as follows. 7.0