How Does a Physician Know Exactly What Layer S/he is Injecting a Filler Into?

There really is no substitute for injector experience and training when discussing filler treatments. It really is a "feel" that the injector has for the level of the injection. The dermis (the layer most superficial) is more firm, the subcutaneous layer, which is mostly fat, is more "loose", the injector can get an idea of the level by the resistance on the needle. When injecting in the superficial dermis, the needle is almost visible in the skin, the deeper dermis is just above where the needle resistance lessens. Experience and training are necessary to “feel” the difference.

Thank you for your very good question. This demonstrates the critical importance of choosing an experienced injector who knows exactly how deep to place an injection to achieve a safe and effective result. In most cases, the process is done by feel, and is adjusted based on the type of filler used, the treatment area, and the goal of the procedure. For example, treatment for fine lines usually involves more superficial injections, which treatments to restore volume are usually performed deeper. As long as you are working with a very experienced, board-certified injector, you can rest assured your injector will know precisely where to place the needle or cannula to ensure an optimal outcome.

A well-trained and experineced injector knows by feel which "layer" he or she is injecting to, when placing dermal fillers. Be sure you're consulting and meeting with someone reputable and experienced for best results!