Reduce collagen degradation
To ensure sufficient collagen in the skin, first prevent loss of the collagen that you already have. If you are not already on a proper sun care regimen, that should be your first priority. Studies have shown that sun protection is one of the most important ways in which you can combat aging. Cigarette smoke, like sun exposure, has also been shown to greatly degenerate collagen, and there is also evidence that improper and insufficient sleep has a negative effect on skin health. Read more about tips for choosing a good sunscreen in this previous post.