The darkest of our henna blocks, Noir is made from fair trade cocoa butter, the finest Iranian henna and deep blue indigo to leave hair soft, glossy and deeply conditioned. Those with dark hair will notice a rich blue-black tint throughout, and the more you use it, the more the color intensifies. After the first use, your hair will turn several shades darker, but to truly release your dark side, apply every 4-6 weeks.