Rouge, a powder used to give artificial colour to the cheeks. For commoner purposes vermillion rubbed up with almond-oil is employed, but the safer and better quality is prepared from carmine (the colouring matter of cochineal), either alone or mixed with the safflower colour. These are generally rubbed up with French chalk, and supplied either as powder or, along with a little oil, in the form of sanzers.
Jeweller's rouge is an impalpable preparation of oxide of iron, obtained by gently heating the yellow oxalate of iron till it decomposes; carbonic acid escaping, and only a red powder being left. It is used for polishing silver, and for this purpose should be of the finest quality. Many cheaper varieties are sold under this name.