They get washed repeatedly. Frequent handwashing strips the natural oils from your skin. Unlike your face, your hands rarely get those oils replenished after every wash. Over time, a compromised skin barrier makes skin drier, rougher, and more prone to showing fine lines.
Nobody puts SPF on their hands. Honestly, this is the core issue. Your face gets sun protection daily. Your hands almost never do. Decades of unprotected sun exposure adds up faster than anything else.
Step 1: Sunscreen on Your Hands (Every. Single. Day.)
If you do nothing else from this article, do this. A broad-spectrum SPF 30 or higher applied to the back of your hands every morning — and reapplied after washing — is the single most effective thing you can do to prevent and slow hand aging.
UV rays are the primary cause of age spots. They also break down collagen, which causes the thin, crepey texture people associate with older hands. And unlike wrinkles that come from expression or sleep position, sun damage is almost entirely preventable. BiologicalSciences
One thing people don’t think about: UV rays come through car windows. Your left hand (if you’re in a right-hand-drive country) sits on or near the steering wheel in direct window light for years. This is why many people notice more sun damage on their left hand than their right.