Tesla high-frequency current is used for _________.

• A. Increasing collagen production
• B. Improving germicidal action
• C. Hydrating the skin
• D. Tightening pores

Answer: (B)

High-frequency current delivers a small, rapid current that ionizes the gases in the electrode and surrounding air, producing a mild heat and ozone. The ozone acts as a germicide, helping to kill surface bacteria and improve antiseptic conditions on the skin. This antimicrobial effect is the primary reason it’s used in skincare. It’s not mainly used to hydrate the skin, stimulate collagen production, or tighten pores, which involve different mechanisms or treatments.