At Garnier, we know that oil can do much more than just condition your hair. When concentrated at the heart of the Olia permanent hair dye formula, oil maximises the colour result.Garnier Olia permanent hair dye is a 60% oil-powered formula, with natural flower oils and ammonia free for a pleasant scent. Our hair dye visibly improves the quality of hair, for better shine and 35% smoother hair**. Olia home hair colour will also provide maximum colour performance for lavish, vivid and long-lasting colour. Plus, a unique sensorial application and optimal scalp comfort with our non-drip smooth velvety texture of the colourant cream.** Instrumental test vs before and after colouration.