Basal cell carcinoma (BCC), also known as a rodent ulcer, starts in the cells lining the bottom of the epidermis and accounts for about 75 in every 100 skin cancers.

Source: https://www.hulldailymail.co.uk/news/real-life/nurses-made-feel-vain-asking-8258724

Dr. Lewis explains that there is a cooling mechanism in the handpiece that cools the surface of the skin that allows the heat energy to pass through the epidermis safely to prevent triggering melasma and hyperpigmentation.

Source: https://www.popsugar.com/beauty/sofwave-skin-treatment-editor-experiment-49220978