After our eyes, our hands show the most telltale signs of our age. Why? Fewer oil glands, constant hand washing, and unprotected sun exposure all contribute to premature aging of hands. Even if you get weekly manis, there’s no substitute for daily care to ward off dark spots and rough skin, gnarly cuticles and nail ridges. Here are 10 essential steps to keep your hands and nails beautiful, youthful, and healthy year round—with or without a salon manicure.