Crepey skin refers to thin, sagging skin that develops fine wrinkles and a fragile texture. Unlike deeper wrinkles, which result from repeated facial expressions, crepey skin is caused by a breakdown of collagen and elastin fibers. It is most commonly found on the face, neck, upper arms, and hands, where the skin is naturally thinner. Factors such as sun damage, aging, and dehydration contribute to its development, but targeted treatments can help restore a firmer, more resilient complexion.