| VI.— | Nitrate of copper | 360 grains |
|---|---|---|
| Nitrate of silver | 7 ounces | |
| Distilled water | 60 ounces | |
| Water of ammonia, a sufficiency. | ||
Dissolve the salts in the water and add the water of ammonia carefully until the precipitate is all redissolved. This solution, properly applied, is said to produce a very black color; a lighter shade is secured by diluting the solution. Copper sulphate may be used instead of the nitrate.
Brown Hair Dyes.—A large excess of ammonia tends to produce a brownish dye. Various shades of brown may be produced by increasing the amount of water in the silver solution. It should be remembered that the hair must, previously to treatment, be washed with warm water containing sodium carbonate, well rinsed with clear water, and dried.
| I.— | Silver nitrate | 480 grains |
|---|---|---|
| Copper nitrate | 90 grains | |
| Distilled water | 8 fluidounces | |
| Ammonia water, sufficient. | ||
Dissolve the two salts in the distilled water and add the ammonia water until the liquid becomes a clear fluid.
In using apply to the hair carefully {391} with a tooth-brush, after thoroughly cleansing the hair, and expose the latter to the rays of the sun.
| II.— | Silver nitrate | 30 parts |
|---|---|---|
| Copper sulphate, crystals | 20 parts | |
| Citric acid | 20 parts | |
| Distilled water | 950 parts | |
| Ammonia water, quantity sufficient to dissolve the precipitate first formed. | ||
Various shades of brown may be produced by properly diluting the solution before it be applied.
| Bismuth subnitrate | 200 grains |
| Water | 2 fluidounces |
| Nitric acid, sufficient to dissolve, or about | 420 grains |
Use heat to effect solution. Also: