Aging (Chronoaging and Photoaging)

Aging refers to the natural and environmental processes that lead to gradual changes in the skin’s structure and appearance over time. Chronoaging, also called intrinsic aging, is the genetically programmed, inevitable aging process influenced by time and biological factors. Photoaging, or extrinsic aging, is caused by cumulative sun exposure and environmental damage, leading to wrinkles, hyperpigmentation, and loss of elasticity. Both processes often overlap and contribute to the visible signs of skin aging.