Is it illegal to hand-paint henna in Chinese painting?

It is not illegal for henna to be hand-painted in Chinese painting.

According to Chinese laws, it is not illegal for individuals to tattoo or hand-draw on their bodies. Hand-painted henna is a traditional art form, which is common in India and the Middle East, and gradually becomes popular in China. Although there is no special law in China to stipulate the legality of henna hand-painting, there is no provision explicitly prohibiting individuals from hand-painting henna. Therefore, it can be concluded that it is not illegal for henna to be hand-painted in Chinese painting.