Think of your skin as a kind of stretchy fabric. Collagen gives it strength and structure, while elastin gives it stretch and resilience. Elastin is the reason your skin snaps back after you smile, frown, or make a goofy face in the mirror. Without it, skin starts to sag, droop, and lose its youthful spring.

Our bodies produce elastin naturally, especially during our younger years. But here’s the catch—elastin production pretty much slows to a crawl by the time we hit our late twenties. And once it's gone, it's very difficult for the body to make more of it. That’s why elastin loss is one of the biggest contributors to visible aging, right up there with collagen loss and sun damage.

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