Instantaneous Hair Dye

March 31st, 2022

Take one drachm of nitrate of silver, and add to it just sufficient rain water to dissolve it, and no more; then take strong spirit of ammonia, and gradually pour on the solution of silver, until it becomes as clear as water, (the addition of the ammonia at first makes it brown); then wrap round the bottle two or three covers of blue paper, to exclude the light — otherwise it will spoil. Having made this, obtain two drachms of gallic acid; put this into another bottle which will contain one-half pint; pour upon it hot water, and let it stand until cold — when it is fit for use.

Source: Our Knowledge Box, ed. G. Blackie


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