Rouge is a cosmetic prepared and used to impart artificial bloom to the cheeks or lips. It is applied by means of a camel's hair pencil, puff-powder or a hare's foot. When rouge is properly prepared, it is said that its application does not injure the skin.
Jeweler's rouge is an impalpable preparation of oxide of iron obtained by 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.