Trouble ask double beauty collagen

1, process collagen is hairdressing health food, the production of collagen usually by hydrolysis enzyme solution and the two methods, enzyme solution than technology hydrolysis gelatin (or animal bone) method of safety, won't because the role of strong acid, strong alkali and destroy the natural chemical structure 2, good collagen raw materials for the original health animal skin, the final product should be for peptide structure, the expert points out, the molecular weight of collagen close to 3000 the most easy to human body to absorb about Da and use 3, good collagen no XingChouWei, health, safety, water solubility are good, good liquidity 4, good collagen amino acid content high effective, such as: proline, glycine, lysine, etc to promote collagen synthesis of human body material effectively amino acids. Good collagen amino acid content should be the very high 5, good collagen should not contain fat, sugar, purine, cholesterol, antiseptic material etc.. I choose is this! , this is my collection of buy address, http://soucang.baidu.com/pttcmep69 I have bought three times