Artificial pigment is a synthetic chemical substance, which is usually used in food, beverage, cosmetics and other products to increase color and attractiveness. Dahongzhe vinegar is a traditional China vinegar, which is made from rice, wheat and bran through fermentation and brewing. Therefore, the red color of red Zhejiang vinegar is not a pigment tone.

In fact, the color of red Zhejiang vinegar comes from the pigment produced in the brewing process, not artificially added.