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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.

1. – Silver nitrate………………….……   480 grains
Coyper 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 with a tooth brush, after thoroughly cleansing the hair, and expose the latter to the rays of the sun.

2. – 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

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.