Thanks will look those up. Also it says to create all the proteins your body needs, you need all 22, I will see if that one you posted has them all.
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Here is a study specifically about wounding and hair growth...
http://docsdrive.com/pdfs/ansinet/ijb/2010/69-80.pdf
baiscally figure 7 shows different substances that allowed wounded areas to grow hair. Essential oils and a juice extract, etc are tested.
the study concluded that amino acids in the plant extract played a role in why the rats grew hair from wounds vs the rats that were treated with essential oils and those without treatment.
here is another study
http://www.bigfooty.com/forum/threads/study-thymosin-beta-4-induces-hair-growth.1020962/page-2
You need all 22 amino acids to produce the 50,000 amino acids your body uses, if just one is missing you will not be able to produce thousands of amino acids. Your body can only produce some on its own.
Here's the last study I'm posting now suggesting poor wound healing due to lack of amino acids is a reason for skin rash hair loss.
http://www.mecfsforums.com/index.php?topic=5444.0
http://www.dental-marketing.org/blog/wp-content/uploads/2012/05/Nutrition-and-Wound-Healing1.pdf
This study says that during wound remodeling if your missing the right protein/amino acids, your wound will not heal correctly and hurt our remodeling process. So the protein creation process will be retarded if you don't have the amino acids to produce hair. Your hair is 91% protein.
I believe for dermarolling amino acids is the most important thing you can take because it's what your hair is made of and during woundin/remodeling you need the ingredients.