From which layer does the skin receive its elasticity?

The skin's elasticity primarily comes from the reticular layer of the dermis, which is rich in collagen and elastin fibers. These fibers play a crucial role in providing strength, flexibility, and the ability to stretch and rebound after being pulled. While the papillary layer contributes to the skin's structure and nutrition through its fine blood vessels and nerve endings, it is the reticular layer that contains the dense network of collagen and elastin that directly influences the skin's elasticity.

The epidermis, as the outermost layer, does not contain these fibers and is primarily responsible for protecting the underlying structures. Likewise, the subcutaneous layer serves as a cushion and insulator but does not contribute directly to the elastic properties of the skin. Therefore, the correct source of skin elasticity is found in the reticular layer of the dermis.