Acne scars are generally caused by inflammation of the skin caused by engorged skin pores filled with redundant oil painting, dead skin cells and bacteria. The severance swells, causing a break in the follicle wall. Depending on the depth of break, the characteristics of acne scars vary. Shallow lesions are generally minor and heal snappily. But if there’s a deep break in the wall of the severance, infected material spills out into the girding towel, creating deeper shoveled lesions. The skin attempts to repair these lesions by forming new collagen filaments. These repairs generally are n’t as smooth and indefectible as the original skin. The common types of scarring can be seen in this image.