How does radiofrequency tighten skin?
Radiofrequency is energy. Therefore it has the ability to produce heat. The RF heats the skin deep inside. That heat causes the skin to produce new collagen and elastin. It encourages new cell production, which helps the skin to become firmer and thicker. That makes the skin more youthful-looking.
An advantage of using RF is that the lower frequency of RF can safely penetrate to a deeper level. It can actually lift tissues. Because RF penetrates deeper into the skin, there is no risk to patients with darker skin tones.
Is radiofrequency safe?
We’re all exposed to low levels of RF every day, from cell phones, TV, WiFi, etc. Because it’s used for so many things, radiofrequency has been extensively studied for its impact on human health. You can read the report from the American Cancer Society here: American Cancer Society.
The National Center for Biotechnology Information also has a clinical study on RF that you can read here: NCBI
One more study, incase you’re interested is about RF and body contouring: The Journal of Clinical and Aesthetic Dermatology.