Discover Garnier Olia Permanent Hair Dye. Now with an Improved Formula with No Ammonia, No Silicone and 60% oils to propel colour deep inside the hair for maximum colour and up to 100% grey coverage. It's time to make an appointment with Olia. Discover Olia Oil-powered hair colour in a pure, dark blonde shade without other reflects-allowing your natural tones to show through. The 1st permanent home hair colour is powered by oil, not ammonia, to reduce damage. To keep your hair visibly healthy and for optimal experience during the process, our formula is: AMMONIA FREE SILICONE FREE The Olia hair colour range is: Vegan** Approved by Cruelty Free International Under the Leaping Bunny Programme AN EASY APPLICATION KIT With our easy application kit and non-drip velvety formula, everyone can create great hair colour looks, just like a pro.