Aging involves lots of changes throughout the body, but few organs broadcast the process quite as publicly as the skin.

Watching your hair gray and your skin crease has long ... As you get older, your skin experiences intrinsic aging — a natural process that follows the passage of time — and extrinsic aging ...

Hormones, including insulin-like growth factor 1, growth hormone, estrogens, retinoids, and melatonin, show potential in treating and preventing skin aging signs like wrinkles and hair graying.