Oil powered with no ammonia permanent hair color Olia shade 4.15 Dark Soft Mahogany adds cool, reddish tones to your dark brown results for the most brilliant mahagony and provides 100% gray coverage to achieve vivid, radiant long lasting color for all hair textures Best for anyone with natural hair between light brown and black Ammonia free permanent hair color made with a 60% oil blend with natural flower oils to help reverse roughness and dullness to deliver brilliant color and visibly healthier hair that’s hydrated, silky, and up to 3x shinier (than uncolored, unwashed hair) Ammonia Free, Paraben Free, Silicone Free and Phthalates Free Leaping Bunny certified, Cruelty Free and Vegan