I

Lactic acid......... 1 drachm

Boric acid......... 1 drachm

Ceresine........... 1 drachm

Parafline oil........ 6 drachms

Hydrous wool fat. .. 1.5 ounces

Castor oil .......... 6 drachms

II

Unna advises hydrogen dioxide in the treatment of blackheads, his prescription being:

Hydrogen dioxide 20 to 40 parts Hydrous wool fat.. 10 parts

Petrolatum....... 30 parts

III

Thymol.......... 1 part

Boric acid........ 2 parts

Tincture of witch-hazel ........... 18 parts

Rose water sufficient to make . .. 200 parts Mix. Apply to the face night and morning with a sponge, first washing the face with hot water and castile soap, and drying it with a coarse towel, using force enough to start the dried secretions. An excellent plan is to steam the face by holding it over a basin of hot water, keeping the head covered with a cloth.

IV

Ichthyol...........     1 drachm

Zinc oxide.........     2 drachms

Starch............     2 drachms

Petrolatum........     3 drachms

This paste should be applied at night. The face should first be thoroughly steamed or washed in water as hot as can be comfortably borne. All pustules should then be opened and blackheads emptied with as little violence as possible. After careful drying the paste should be thoroughly rubbed into the affected areas. In the morning, after removing the paste with a bland soap, bathe with cool water and dry with little friction.