
I hope the collagen supplements help. They can't hurt. The collagen in your skin has to be made by your own cells and secreted into place - supplemental collagen can't be placed in your skin. But collagen has a LOT of a particular amino acid, proline, which is very important for its structure. Collagen supplements should increase your proline intake.
Two other things are very important for collagen synthesis. There's an enzyme that modifies collagen to give it it's correct structure, and that enzyme requires vitamin C and iron. So make sure you get plenty of both those things.
(You probably know that scurvy is a breakdown of the skin, and inability to heal wounds. It is caused by inability to synthesise collagen, due to vitamin C deficiency).
So anyway, take your supplements and take care of yourself!
[edit - I don't mean you have scurvy. I'm just giving an extreme example of collagen loss, and its well-known cause]