Wrinkles are folds, creases or ridges that naturally appear on the skin as you age. Usually, the first wrinkles appear on the face due to the overtime effects of several facial expressions, like squinting, smiling or frowning.
Aside from aging, excessive sun exposure, sun damage, dehydration, genetics, and smoking can trigger premature wrinkles on the skin. Environmental pollutants like smoke, dust, soot or nitrogen dioxide can also contribute.
Usually, wrinkles become more prominent as you age due to loss of skin elasticity and reduced collagen production. You may notice them as lines, folds or creases on the face, neck, hands, arms, legs, or skin. But it usually starts from the face.