During the last six decades the treatment of hypertrichosis has been performed preferably by the use of a needle electrode conducting negative galvanic current. This is the method of negative electrolysis.
The action of the galvanic current brings about cauterization of the hair follicle through the chemical process provoked by this current, in which hydrogen ions are liberated and appear on the surface while sodium hydroxide is formed in the follicle around the needle. This method of destruction of the hair follicle is slow and somewhat painful. The slowness of this process is a handicap, particularly when large areas have to be treated.
The idea of using the high frequency current for the local treatment of hypertrichosis dates back more than fifteen years.1 But the progress made in this direction was slow and hesitating, because most of the time dermatologists who wished to use this current had at their
KARP FL. HIGH FREQUENCY CURRENT IN THE TREATMENT OF HYPERTRICHOSIS. Arch Derm Syphilol. 1941;43(1):85–91. doi:10.1001/archderm.1941.01490190088004
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