Joined: 21 Aug 2008
|Posted: Mon May 11, 2009 12:18 pm Post subject: Preservation of Peptides from Manufacturers
I am thinking of doing some DIY skin care with peptides. I have read that peptides, unless prerserved in solution properly, can be broken down and useless before purchase.
Do peptides have to be suspended in, say, glycerin, hyaluronic acid, in order to keep them intact and active? Does water in solution, break them apart and render them useless?
These are the peptides I am looking at and they are all in different solutions:
Glycerin (and) Water (and) Butylene Glycol (and) Carbomer (and) Polysorbate 20 (and) Palmitoyl Pentapeptide-4
Glycerin, Butylene Glycol, Water(Aqua), Carbomer, Polysorbate-20, Palmitoyl Oligopeptide (and) Palmitoyl Tetrapeptide-7
Water (Aqua), Acetyl Hexapeptide-8, and hyaluronic acid
Water (and) Acetyl Hexapeptide-8
Are any of these, in your opinion, a good product, in respects to the peptides still being active and unbroken?