| Tartaric acid | 150 grains |
| Sodium bicarbonate | 168 grains |
| Water | 32 fluidounces |
When effervescence of the latter has ceased, mix the cold liquids by pouring the latter into the former with constant stirring. Allow the precipitate to subside; transfer it to a filter or strainer, and wash with water until free from the sodium nitrate formed.
Chestnut Hair Dye.—
| Bismuth nitrate | 230 grains |
| Tartaric acid | 75 grains |
| Water | 100 minims |
Dissolve the acid in the water, and to the solution add the bismuth nitrate and stir until dissolved. Pour the resulting solution into 1 pint of water and collect the magma on a filter. Remove all traces of acid from the magma by repeated washings with water; then dissolve it in:
| Ammonia water | 2 fluidrachms |
| And add: | |
| Glycerine | 20 minims |
| Sodium hyposulphite | 75 grains |
| Water, enough to make | 4 fluidounces. |
Hair Restorers And Tonics:
Falling Of The Hair.
| Salicylic acid | 1 part |
| Precipitate of sulphur | 2 1/2 parts |
| Rose water | 25 parts |
The patient is directed to part the hair, and then to rub in a small portion of the ointment along the part, working it well into the scalp. Then another part is made parallel to the first, and more ointment rubbed in. Thus a series of first, longitudinal, and then transverse parts are made, until the whole scalp has been well anointed. Done in this way, it is not necessary to smear up the whole shaft of the hair, but only to reach the hair roots and the sebaceous glands, where the trouble is located. This process is thoroughly performed for six successive nights, and the seventh night another shampoo is taken. The eighth night the inunctions are commenced again, and this is continued for six weeks. In almost every case the production of dandruff is checked completely after six weeks’ treatment, and the hair, which may have been falling out rapidly before, begins to take firmer root. To be sure, many hairs which are on the point of falling when treatment is begun will fall anyway, and it may even seem for a time as if the treatment were increasing the hair-fall, on account of the mechanical dislodgment of such hairs, but this need never alarm one.