Zhang Hua's "China Black", dye 1, smells pungent. I thought it was natural, but the other two doses were ok.

At present, most hair dyes on the market have added the concepts of "plant hair dyeing" or "natural hair dyeing", but there are only a handful of real plant hair dyes. Dr. Tao's plant hair dye (which has obtained national patent) is a real plant hair dye, mild and non-irritating. The key is to be safe and not allergic. You can learn about it. My friend has been using it.