naturcolor haircolor hair dye - light burdock, 4 ounce (5n) naturcolor naturcolor 5n light burdock permanent herbal based haircolor gel utilizes herbs to cover grey as opposed to chemicals. with ingredients such as burdock root and nettle leaf extract along with chamomile flower extract, our formula seeks to achieve a glossy, natural effect. this box contains 4 fl oz of herbal hair color that uses plant extract as its active ingredients.