Would RF, electrical muscle stimulation and LED red light therapy affect my dermal fillers?

Thanks for your question. Injectable hyaluronic acid based fillers are considered to be very heat stable- it takes over 150 degrees Fahrenheit temperature to effectively "melt" them. Therefore, our aesthetic devices which deliver heat do NOT reach those temperatures. So, the general consensus is that they do not "melt filler". As for "melting fat"- this depends on the heat achieved and the depth at which it is delivered. In most areas of the face, one needs to get to 3 to 4 mm or deeper to affect fat. Most devices do not get to that depth. With those that do, ne is then intentionally, selectively targeting that depth and setting the temperature high enough to dissolve unwanted fat cells. In other words, yes you can do it if you want to, and you can clearly avoid doing so if you don't want to. EMS and LED would have zero effect on fat.