What is the purpose of the spark gap in high frequency treatment?

The spark gap in high frequency treatment serves the purpose of producing a germicidal effect. This is a key feature of high frequency electrical treatments, where the generation of ozone through the spark gap has antimicrobial properties, helping to sterilize the skin and eliminate bacteria. This action makes it particularly effective for treating certain skin conditions, such as acne, by targeting and reducing the presence of harmful bacteria on the skin's surface.

In addition to the germicidal effect, the spark gap allows the treatment to create a visible arc or spark, which enhances the efficacy of the high frequency current to promote healing and improve blood circulation. While other options mention safety, barriers, and product absorption, they do not specifically address the critical function that the spark gap performs in terms of its bactericidal capability.