Iontophoresis is a process that primarily serves to?

Iontophoresis is a technique used in facial treatments that utilizes a low-level electric current to enhance the penetration of products into the skin. The primary purpose of this process is to stimulate biological reactions, including the production of elastin and collagen, which can improve skin tone and texture. By using electrodes to deliver specific ions or compounds directly into the skin, iontophoresis helps to increase blood circulation, promote cellular activity, and support the overall health and vitality of the skin.

The stimulation of elastin production is significant as elastin is a key protein that contributes to the skin's elasticity and firmness. By choosing this option, one recognizes the therapeutic benefits that iontophoresis offers in the context of esthetic treatments, particularly for improving skin appearance and minimizing the signs of aging. Other options, in contrast, do not accurately represent the primary function of iontophoresis, which is focused on skin rejuvenation rather than separation of ions, sebum production, or hair removal.