Because it is a product that can turn white hair into black hair, it is the result of many years' research in Nanjing Tongrentang. The ingredients in it are all natural plants, so it's very good.

Tongrentang is a famous time-honored brand in Chinese medicine industry. Founded in 1669 (the eighth year of Emperor Kangxi in Qing Dynasty), it devoted itself to imperial doctors from 1723, and experienced eight emperors 188.