What is the treatment called that pushes water-soluble compounds into the epidermis?

What is the treatment called that pushes water-soluble compounds into the epidermis?

• A. Iontophoresis
• B. Ultrasonics
• C. LED therapy
• D. UV therapy

Answer: (A)

Iontophoresis uses a mild electric current to drive charged, water-soluble molecules through the skin’s outer barrier and into the epidermis. The stratum corneum resists water-soluble compounds, so applying a small current creates an electrochemical force that pushes these ions into the deeper skin layers, with delivery controlled by current strength and time. The other options don’t involve using electricity to propel ions: ultrasonics works by mechanical vibrations to enhance permeability, LED therapy uses light energy, and UV therapy uses ultraviolet radiation—none of these actively transport water-soluble molecules into the epidermis.

Iontophoresis uses a mild electric current to drive charged, water-soluble molecules through the skin’s outer barrier and into the epidermis. The stratum corneum resists water-soluble compounds, so applying a small current creates an electrochemical force that pushes these ions into the deeper skin layers, with delivery controlled by current strength and time. The other options don’t involve using electricity to propel ions: ultrasonics works by mechanical vibrations to enhance permeability, LED therapy uses light energy, and UV therapy uses ultraviolet radiation—none of these actively transport water-soluble molecules into the epidermis.