1. Indelible marks. A scar is a mark left on damaged tissue — the deep, thick layer of skin called the dermis. It’s usually composed of fibrous tissues and hapazardly arranged collagen, a fibrous protein that gives skin its strength, durability and softness. 2. Many factors. For some, scars are a badge of honor. For others, they’re bothersome, unsightly — and unpredictable. Many things can …
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