I dont that there are any members that can say 100% that Chem Pe will work as a stand alone. However, there is a lot to suggest that it could help or assist. Beyond that comment now: there many different ways that someone may choose to do their PE and there many different chem options to try.
Some guys seem to think it works and some do not.
Here is something I will add. I am actively using TB500 and BPC157 as healing agents. And they sure as shit work. I am also using IGF-DES daily and have been for close to 2 months. And yes, it is real. I cannot say 100% this is working yet, but I can say that I have noticed an increase on length inside the pump tube over this course. I will be continuing what i am doing with IGF for another few weeks then taking a few weeks off. Then coming back to stack IGF-Des with MGF (not PEG-MGF).