Olia Bold Vivid Permanent Hair Color 9.11 Metallic Silver with natural flower oils and no ammonia, visibly improves hair quality for up to 3x shinier hair and optimal scalp comfort. Olia Midnight permanent no ammonia hair dye delivers maximum color performance for exceptional, ultra-luminous, long-lasting dark hair with beautiful undertones and up to 100% grey coverage. Olia home hair color has a unique sensorial application with our non-drip smooth velvety texture of the colorant cream instrumental test vs before coloration.