Subcision With CO₂ Laser or PRP vs Subcision Alone in Atrophic Acne Scars

patients will undergo subcision procedure alone using 18 gauge blunt cannula to release fibrous bands under atrophic acne scars.this group will serve as control comparator

patients will undergo subcision procedure followed by fractional co2 laser applied to right side of face, the left side will receive subcision alone

patients will undergo subcision procedure followed by intradermal injection of autologous PRP prepared from patients blood on right side.left side will receive subcision alone