What is your experience with HIFU? Is it not dangerous to the layers of muscle underneath?

I’ve had three successful treatments over the past 8 years with Ultherapy, which is a branded version of HIFU (which stands for High Intensity Focused Ultrasound).

Here’s a video where I’m talking about the treatment in general.

No, it’s not dangerous to the underlying muscle – it is aiming its focused point of ultrasound energy at the collagen layer surrounding the muscle, and it needs to strike that precisely in order to damage that collagen and stimulate new collagen growth, which is what delivers the tightening to the skin over time.

The thing with HIFU treatment is that you want to be treated by someone really experienced with the machine and the techniques needed. The Ultherapy device has an ultrasound scanner built into it, which helps because the practitioner can see exactly where/ how deep in the skin each shot of focused ultrasound is being delivered.