Aka acne scars, scarring, post acne, post operation, post peel, cicatrice Introduction Scar is area of fibrous tissue that replaces normal skin tissue after injury. It is resulted from the natural healing process of wound repair in the skin. When the fibrous tissue is not identical to the original tissue it replaced, and hence appeared as scar. Acne scar is the product of inflamed acne and the visible remnants of acne are permanently left. Usually severe, inflamed, cystic acne leaves scars after healing, but in some people even superficially inflamed acne can cause scarring. There are many types of scars, each determined by the depth of wound and tissue response towards the inflammation of skin.