Electrology History: Timeline for Permanent Methods, 1945

1945 – In 1945, Henri St. Pierre and Arthur Hinkel successfully blended galvanic current with a high frequency current of low intensity. the currents ran simultaneously through a single tapered needle. This blend method was devised to destroy the dermal papilla and germinative (jur MI nah tive) cells by decomposition much faster than galvanic current used alone.

~Modern Electrology: Excess Hair Its Causes and Treatments by Fino Gior

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