ROUGE (" red," from Lat. rubeus), a French name applied to various colouring substances of a brilliant carmine tint, especially when used as cosmetics. The best of these preparations are such as have for their basis carthamine, obtained from the safflower (Carthamus linctorius). The Chinese prepare a rouge, said to be from safflower, which, spread on the cards on which it is sold, has a brilliant metallic green lustre, but when moistened and applied to the skin assumes a delicate carmine tint. Jeweller's rouge for polishing plate is a fine red iron oxide prepared by calcination from ferrous sulphate (green vitriol).