Wrinkles and dark spots happen. But they don't always happen for the same reason. Knowing which one you're dealing with changes what you do about it. Most people lump sun damage and aging together because they show up around the same time. They are two different processes, and your skin responds better when you treat them correctly. What Aging Actually Does to Skin Intrinsic aging is what happens regardless of your environment. Starting in your mid-20s, collagen production sl