Contains no ammonia, resorcinol or parabens Available in 31 colors, each color can be used alone or blended to create personalized hair colors Fast and easy, complete application takes less than an hour Safe to use over color treated or permed hair. Gives natural looking color variation, will not fade like other hair products. Herbaceuticals naturcolor sienna chestnut permanent haircolor gel effectively covers gray hairs and gently tints your strands a warm brown hue. We make this hair dye with herbal-based ingredients and never add parabens or ammonia resorcinol, so you can color with confidence. We also don't test on animals to ensure that your beauty routine is cruelty-free. This 4 fl oz box provides enough haircolor gel for a single application on long hair or two applications on short hair.