Wrinkles are a tell-tale sign of aging, and something that we all must face (no pun intended). As we age our skin loses moisture and elasticity, making it prone to developing fine lines and wrinkles. We also lose our ability to produce collagen and elastin, causing the skin to become less firm and lose its flexibility. While developing wrinkles is an unavoidable part of the aging process, it can be slowed down or prevented to some degree. However, to fully understand how to protect and preserve our skin, we first must learn about the two primary culprits of skin aging- extrinsic aging and intrinsic aging.