The scientific name of "magenta" in the general population is "cochineal red", which is named after an HOMOPTERA insect called cochineal. Fuchsin acid extracted from mature worms is the main component of fuchsin. "Carmine" is non-toxic and very bright and beautiful. Because of its good dyeability, magenta has been widely used in various industries, but the stability of natural magenta is poor, and it will fade whether it is scattered or directly illuminated. Moreover, pure magenta can not be dyed directly, and it needs to be used together with metal salt mordants such as iron and aluminum. Dyes made of natural fuchsin are non-toxic and edible, but the price is relatively expensive. Inferior "magenta" pigment contains a lot of chemical raw materials such as mercury, cadmium and selenium. If ingested too much, it will cause heavy metal poisoning.