Rouge is prepared from carmine, and the colouring matter of safflower, by mixing them with finely levigated French chalk or talc, generally with the addition of a few drops of olive or almond oil. Sometimes fine white starch is used as the reducing ingredient. It is used in the form of powder, pomade, and crepons - the latter being pieces of crape imbued with the colouring matter. For common purposes, vermilion is used; and it is sometimes prepared for this purpose by mixing it with a few drops of almond oil and of mucilage of tragacanth, placing the mixture in rouge pots, and drying it by a very gentle heat.
Almond Bloom. Boil 1 oz. of Brazil dust in 3 pints of distilled water, and strain; add 6 drs. of isinglass, 2 drs. of cochineal, 1 oz. of alum, and 3 drs. of borax; boil again, and strain through a fine cloth. - Gray's Supplement.
Face Whites. One of most innocent kind is prepared from Venetian talc, or French chalk, finely levigated. These are sometimes calcined, to increase their whiteness; but this diminishes their unctuosity and adhesiveness. Digestion with vinegar, and subsequent washing, are practised for the same purpose. Flake white (a fine variety of white lead) was formerly much used, but is now generally condemned as unsafe; it is also liable to become brown under certain circumstances. Pearl or bismuth white (magistery of bismuth*) is less injurious when pure, but is subject to the latter inconvenience. M. Thenard recommends oxide of zinc, with an equal weight of French chalk prepared by vinegar. Magnesia is said to be employed by by the American ladies. White starch is used for the same purpose.
* For this purpose a little hydrochloric acid is added to the solution of the metal in nitric acid, and the magistery is precipitated by a small quantity of water; or the nitric solution is mixed with a weak solution of sea salt. Dr. Ure states that the precipitate thus acquires a more pearly lustre.