Acne scars associated with loss of tissue - similar to scars that result from chicken pox - are more common than keloids and hypertrophic scars.
Using tretinoin speeds up the skin’s remodeling process and helps heal post-inflammatory changes. Acne scars is two types of tissue response to the inflammation of acne.
(1) increased tissue formation, and
(2) loss of tissue. Nearly 80 percent of people aged 11 to 30 years have acne, most often on the face, chest and back.