Take of sesquicarbonate of ammonia, and carbonate of potash, of each, 2 drachms; soft water, 1 pint; dissolve, and add the solution to a mixture of tincture of cantharides, 1½ fluid ounces; rectified spirit, ¼ pint; and good rum, 1½ pints; and agitate the whole well together, adding a little scent or not, at will. A commoner kind, in which the “rectified spirit” and one-third of the “rum” is replaced by water, forms the “shampoo liquid” often used by hairdressers, after cutting the hair.