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Collagen is a protein found in the skin that gives your skin a firm and youthful appearance. Collagen and elastin are the two main proteins that provide structural support in the skin.

Acne scars are a common concern because they affect the appearance of the skin. Fortunately, acne scars can be treated. What are acne scars? Acne scars are changes in the texture of the skin surface. Acne scars can be felt when you glide your finger over the skin. You can feel an indentation in the skin. If you look closely you can see the small indentations in the skin. There are different types of acne scars, depending on what they look like. Icepick scars are small and deep. They’re called icepick scars because it looks like someone took an icepick (or a toothpick) and made a small hole in the skin. Boxcar scars are larger and look like squares. They...