The galvanic or multiple-needle process of electrolysis uses which type of electrical current?

The galvanic or multiple-needle process of electrolysis uses direct current, which is essential for the chemical reaction involved in the hair removal process. In this method, the direct current passes through the needles inserted into the hair follicle, and it causes a chemical reaction that destroys the hair follicle tissue. This process typically involves the electrolysis of sodium chloride in the skin, generating a lye solution that effectively disables the hair root.

In contrast to alternating current, which periodically reverses its direction, direct current flows in a single direction, providing a steady and consistent application of the electrical current necessary for effective hair removal. This consistency is vital for the success of the treatment, ensuring that the follicle receives the appropriate energy continuously until it is effectively treated.

Understanding the role of direct current in this context highlights the importance of electrical properties in the efficacy of electrolysis, as well as the fundamental difference between this method and other hair removal techniques, which may use different types of currents or no electrical current at all.