Traditional Culture Encyclopedia - Traditional festivals - What dyes were commonly used to dye red in ancient times? What is the principle of dyeing?

What dyes were commonly used to dye red in ancient times? What is the principle of dyeing?

Animal dyes and plant dyes

Plant dyes refer to pigments extracted from flowers, grasses, trees, stems, leaves, fruits, seeds, skins and roots in nature as dyes.

Animal dyes refer to organic substances extracted from animals, which can color fibers and other materials. Such as red dye extracted from cochineal insects.