High-frequency current is effective during what treatment?

• A. Nail care
• B. Hair straightening
• C. Color processing
• D. A dandruff treatment

Answer: (D)

High-frequency current delivers a gentle heat and antiseptic effect to the scalp. When applied with a glass electrode, it creates a micro-warming environment and ozone that can help kill bacteria and fungi associated with dandruff. This antimicrobial action, combined with increased blood flow to the scalp, promotes a healthier scalp environment and can reduce flaking and irritation. That combination makes it especially useful during dandruff treatment. Nail care, hair straightening, and color processing rely on different mechanisms (nail work, heat from tools, or chemical processing) and don’t benefit from the scalp-focused antimicrobial and circulatory-stimulating effects of high-frequency current.