Scarring occurs as a result of the body's natural healing process in response to damage or injury to the skin. When the skin is injured, whether due to trauma, surgery, acne, or other causes, the body works to repair the damage by producing collagen fibers. The way the collagen fibers are arranged during the healing process determines the appearance of the scar. Here are some common causes of scarring, such as Wounds and Trauma, Surgery, Acne, Infections, Genetics, Skin type and Color, Age and Poor Wound Care.