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To the Editor:
—May I add some comments to the inquiry appearing in The Journal, March 6, page 709, as to the proper outfit for the removal of superfluous hair by electrolysis, and the reply thereto, which does not quite cover two important points.Electrolysis is based on the polarity action of the constant (galvanic) current. A fine, bulbous pointed platinum needle is inserted into the hair follicle, and connected to the negative pole (cathode) of a source of galvanic current: either a few dry cells connected into a battery, or the commercial "direct" current passing through a suitable resistance (rheostat) or the "alternating" current changed into a direct one by a motor generator. A gauze or sponge covered "indifferent" electrode, held by the patient, is connected to the positive pole (anode). A current of about 2 milliamperes, flowing for not more than twenty seconds, will produce sufficient caustic sodium
Kovacs R. ELECTROLYSIS FOR SUPERFLUOUS HAIR. JAMA. 1926;86(13):969. doi:10.1001/jama.1926.02670390049030
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