Elastin is a highly elastic protein found in the dermis alongside collagen. While collagen provides structural firmness, elastin provides flexibility — the ability for your skin to stretch when you smile, squint, or move, then return to its original position. Together, collagen and elastin form the scaffolding that keeps skin looking youthful and firm.
Why Elastin Loss Matters
Unlike collagen, which your body continues to produce (even if at a slower rate), elastin production essentially stops after puberty. The elastin you have is what you get — and it degrades over time due to UV exposure, smoking, and natural aging. Once damaged, elastin doesn't regenerate effectively, which is why sun damage in your 20s can lead to significant sagging in your 40s and 50s.
⚠️ ImportantThis is why sun protection is the single most important anti-aging step. You can stimulate new collagen with treatments like microneedling, but elastin is much harder to replace once lost.