Collagen and elastin, which give skin its strength and flexibility, are found primarily in the:

Collagen and elastin are protein fibers found primarily in the dermis, the deeper living layer of the skin. Collagen gives the skin strength and support, while elastin gives it flexibility and the ability to return to shape. Over time and with sun exposure, these fibers can break down, contributing to wrinkles and sagging. Because many skincare services and concerns relate to the dermis and its fibers, understanding where collagen and elastin are located is part of foundational skin science.