IRCT20200127046282N7 IRCT 2022-03-26 Skin and Stem Cell Research Center, Tehran University of Medical Sciences Comparison between efficacy of SVF on nanofat effect with nanofat on healing of acne scar Comparison between efficacy of SVF (Stromal-Vascular Fraction) on nanofat effect with nanofat on healing of acne scar 2022-04-19 anticipated 10 Complete https://irct.ir/trial/62609 interventional Randomization: Not randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Blinding description: Patients and physicians will not know the type of treatment, but the evaluator will know the type of patient treatment. Therefore, the study will be conducted blindly. 1 atrophic scar. Intervention 1: Control group: (Other side of face) After sufficient anesthesia, treatment with nanofat. Intervention 2: Intervention group: One side of the face after being anesthetized, is first treated with nanofat, and then adipose derived Stromal Vascular Fraction (SVF) cells is injected in the scars. 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 -