IRCT20080901001159N25 IRCT 2019-08-11 Skin and Stem cell Research Center of Tehran University of Medical Sciences Evaluation the effect of conditioned media of adipose derived stem cells in the treatment of acne scars Evaluation the effect of conditioned media of adipose derived stem cells on healing of acne scar after fractional carbondioxide laser resurfacing 2019-06-20 anticipated 10 Complete https://irct.ir/trial/40391 interventional Randomization: Not randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Blinding description: In each session, immediately after the laser on one side of the face, the conditioned media of adipose derived stem cells and the other side of the face saline solution is used topically on the scar. 1 atrophic scar. Intervention 1: Control group: (Other side of face) After sufficient anesthesia, first treatment with Fractional Laser Co2, and then physiological serum is applied topically to the site of the scars for one hour. This procedure is repeated 4 times with intervals of 4 weeks. . Intervention 2: Intervention group: One side of the face after being anesthetized, is first treated with Fractional Laser Co2, and then adipose conditioned media of adipose derived stem cells is applied topically to the scars for one hour.This procedure is repeated 4 times with intervals of 4 weeks. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No more information