Skin wrinkles
Wrinkles are common sign of ageing and occur because of various biological processes that affect the skin's structure and function. They are visible lines, creases, or folds that appear on the skin's surface.
Elastin and collagen are crucial proteins that provide support and elasticity of the skin. As we age, the production of these proteins decreases, leading to a loss of skin firmness and development of wrinkles.
Dehydration and loss of moisture are also a result of ageing. As we age, the skin's ability to retain moisture diminishes, leading to dryness and appearance of wrinkles.
Free radical damage occurs because of exposure to environmental factors such as UV radiation or pollution. These unstable molecules can damage skin cells, leading to premature aging and formation of wrinkles.
Muscle contraction due to facial expressions causes dynamic wrinkles, also known as expression lines. Over time, these repetitive movements lead to formation of lines, such as crow's feet and forehead wrinkles.