"When there's too little collagen, the skin heals with depressions, which we see as atrophic scars. On the other hand, when there's too much collagen, it results in raised scars." Acne scars fall ...

Follow-up visits were conducted every 4 weeks for the first three sessions and every 2 weeks after the fourth session. Scar assessment ... across Fitzpatrick skin types III and IV, with reductions ...