naturcolor haircolor hair dye - burdock, 4 fl oz (4n) naturcolor herbaceuticals naturcolor permanent burdock haircolor gel gently infuses your hair with herbal extracts and plant-based ingredients for a rich dark brown finish. our formula covers one application for long hair and two applications for short hair. go guilt-free in your haircolor routine knowing that our product is not tested on animals. this box contains 4 fl oz of herbaceuticals naturcolor permanent burdock haircolor gel and uses zero parabens or ammonia.