If the collagen is hydrolyzed into individual amino acids, then yes, it is absorbed by the skin and used by molecular enzymes to assemble collagen. This assume

If the collagen is hydrolyzed into individual amino acids, then yes, it is absorbed by the skin and used by molecular enzymes to assemble collagen. This assumes the enzymes are functioning correctly and have the capacity to synthesize more collagen. These mechanisms are well understood and elucidated in good biochemistry and nutrition textbooks.