what are sources of collagen
The good news is that it's possible to reduce those signs of aging with natural, noninvasive methods. As you age, your skin loses some of its elasticity and firmness. Some of this is due to the loss and breakdown of collagen in the dermal layer of your skin. Collagen exists naturally in your skin as a structural support. As you lose collagen throughout the aging process, your skin gets thinner, and wrinkles begin to set in [source: New Zealand Dermatological Society].