DescriptionDiscover Olia by Garnier, the first ammonia-free, oil-activated permanent hair dye. With its ODS technology, 60 percent oil, Olia visibly improves the quality of the hair, hair dye after hair dye. Thanks to a maximum colour power, Olia offers you a long-lasting, rich and vibrant colour. Its wide palette of shades will meet all your colour desires, while preserving the quality of your hair. With Olia, enjoy a real moment of pleasure while dyeing your hair: Enjoy the velvety texture of the blend of the colourant cream and the developer cream, enjoy its delicate floral fragrance during the application and extend this experience when you use the silk and shine conditioner, after you have dyed your hair.