Ace the 2026 Colorado Esthetician Written Exam – Glow Up and Shine Bright!

Iontophoresis, also known as ionization, is a technique used in esthetic treatments to introduce water-soluble products into the skin through the use of a mild electrical current. This process enhances the absorption of various therapeutic ingredients, such as serums and other treatment solutions, by pushing them into the deeper layers of the skin. The electricity creates a temporary increase in permeability of the skin, allowing these molecules to penetrate more effectively than they would with topical application alone.

The other options do not align with the primary function of iontophoresis. Introducing oil-based products is not a characteristic of this method, as iontophoresis specifically requires water-soluble substances for successful penetration. While softening the skin can occur as a secondary benefit of treatment, it is not the primary purpose of this technique. Additionally, removal of hair from follicles is unrelated to iontophoresis, which focuses solely on enhancing the delivery of skin treatments rather than hair removal.