Which is a use of indirect high-frequency treatment?

• A. Treatment of a greasy skin type on the back.
• B. Treatment of a dry and dehydrated skin.
• C. Tightening effect to improve the appearance of fine lines and wrinkles.
• D. Improves the appearance of the skin.

Answer: (C)

Indirect high-frequency treatment delivers a gentle current to the client in a way that creates a warm, stimulating sensation and boosts superficial skin circulation. This warming effect helps stimulate cellular activity, supporting collagen and elastin production and improving skin tone. The most noticeable result is a tightening of the skin and a smoother appearance of fine lines and wrinkles, which is why this use is the best description. Other applications focus on issues like oil control on the back, hydration for dry skin, or a vague overall appearance change; these are not the primary aims of indirect high-frequency, which is why the tightening effect on fine lines and wrinkles fits best.