Although the break down and loss of collagen contributes to skin thinning, lotions containing collagen may not be the best solution. While lotions help moisturize your skin and lock in water, the collagen inside some lotions does not replace the collagen that you have lost. As far as lotions claiming to stimulate your body's own collagen protection, most of these claims have not been scientifically proven [source: Mayo Clinic ]. If you have questions regarding the best moisturizers to use for your skin type and condition, you should consult a dermatologist.
And now for a final suggestion. I like to use Curad non-stick pads (12 count, 2"x3") with adhesive tabs for covering those little nicks (or gashes!). These pads stick less to the wound (the advertisements say they do not stick at all; I'm not sure that is completely true, but they are good, nonetheless). The pads provide a buffer, again, between the wound and the possibility of re-injuring the wound. I know those of you out there who are of age have had a cut stop bleeding, washed it, and returned to work only to find a few minutes later you have rapped the same cut again. Ouch! It almost always is a bigger tear with more bleeding. I am sure we have all seen the same thing. The Curad pads help a lot to keep the second strike from causing as much damage, and they cover the wound to prevent infection. The adhesive used by these pads has not torn my skin. It is an adhesive that grabs, but it doesn't grab so hard that you rip the skin when removing the pad. They are available for under $ per box at Walmart.