Yes, but gently. Chemical exfoliants (like lactic acid or PHAs) are preferable to physical scrubs. They effectively remove dull, dead surface cells without tugging on delicate skin, revealing brighter skin and helping other products penetrate better.
The sun is the number one cause. Ultraviolet (UV) radiation triggers melanin production (causing dark spots) and breaks down collagen and elastin (causing wrinkles). This process is called photoaging.
While not mandatory, a gentle antioxidant serum like Vitamin C is highly beneficial. It protects skin from free radical damage caused by pollution and UV exposure, boosting your sunscreen's power and brightening your complexion.
Apply a thick layer of a hydrating cream or ointment (like petroleum jelly) to your elbows and wear long-sleeved cotton pajamas to allow for deep, intensive absorption while you sleep.