Here on page 22 and 23 you can see the result of phase 1 clinical trials of the drug RXI-109:This drug will probably be the next Juvista, I used to think this drug is something because it is based on RNAi (which is discovered by Dr. Graig Mello for what he was awarded with the Nobel Prize in 2006 and he is the founder of the company that is developing that drug) and because it is often mentioned (and overhyped) by Ray Kurzweil, so that's why I now understand that biotechnology/genomic medicine will stay primitive for a long time to come, it is simply the wrong approach, Seabs is right when he says that the mechanism of the scar formation is too complex for us to understand it in details, so regenerative medicine is the only approach that can result in scar free healing in the foreseeable future.
I suggest you begin again from the basics.In adults scars are results of lime/bad inorganic calcium that is being accumulated.
So the blood after the first days of scar forming cant break this hard calcium.Its all about this hard collagen that CAN BE manipulated back to liquid again.
For scar free healing in most cases use cayenne to close the cut and then put aloe vera and slippery elm paste and cover with bandaid.
For burns there are various soothing herbs .