Dermal Aging

Dermal aging refers to progressive structural and functional changes in the dermis, the connective tissue layer responsible for skin strength, elasticity, and resilience. With advancing age, dermal fibroblasts show reduced capacity to synthesize collagen, elastin, and other extracellular matrix components. This decline leads to thinning of the dermis, loss of tensile strength, and reduced mechanical support for the epidermis. Dermal aging is driven by accumulated molecular damage, oxidative stress, inflammation, and altered growth factor signaling. Vascular supply to the dermis also diminishes, impairing nutrient delivery and waste removal. These changes reduce wound healing efficiency and increase skin fragility. Dermal aging reflects both intrinsic biological aging and long-term environmental exposure. Understanding dermal aging provides insight into how connective tissue deterioration contributes to visible aging and reduced protective function of the skin.