What is a Protein Line Treatment? Same as a Thread Lift?

I usually get Restylene in my cheeks to stop sagging and wrinkles around my mouth and Ive been really happy with it. I recently had a consultation with another doctor today (I live in Shanghai) and she recomended what translates directly to "protein line" She said its a line from my temple to jaw that pulls the skin up and then later disolves, but results last 2 or 3 years. The clinic has a great reputation, but since I can't find any information about the procedure in English Im apprehensive