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Background : Atrophic acne scars are common and undesirable outcome of acne vulgaris related to both its severity and delay in treatment. Such scars can be classified according to the depth and shape of the collagen loss: ice pick, boxcar, or rolling. Many options are available for treatment of acne scars such as: laser surgery, radiofrequency intervention, chemical peels, chemical reconstruction of skin scars (cross technique), dermabrasion, needling, subcision, punch techniques, fat transplantation, and other tissue augmenting agents. Objective : The aim of this study was to compare between GA peel monotherapy and microneedling with dermapen monotherapy in treatment of acne scars. Moreover, combined treatment of GA peel and microneedling with dermapen is compared to each of the above monotherapies in treatment of acne scars. Methods : Thirty patients of both sexes (10 men and 20 women) with age ranged from 19-45 years old with different types of atrophic acne scars were enrolled in the study. Patients were randomly divided into three groups: Group I : Included ten patients (4 males and 6 females) aged 27 - 45 years. They had microneedling with dermapen for treatment of the scars. Group II: Included ten patients (4 males and 6 females) aged 19- 42 years. They had glycolic acid 35% peel for treatment of the scars. Group III: Included ten patients (2 males and 8 females) aged 19-39 years. They were treated with skin microneedling with dermapen combined with glycolic acid 35% peel. Results : Results revealed that there was statistical significant decrease between acne scar grade in dermapen group before and after treatment with degree of improvement (80%). Also, in glycolic acid group before and after treatment with degree of improvement (70%). Statistical significant decrease between acne scar grade in combination group before and after treatment with degree of improvement (100%). Statistical significant increase in frequency of improvement in rolling compared to boxcar and icepick in all groups and also in boxcar compared to icepick. Conclusion : Dermapen and glycolic acid peel are effective and safe techniques in acne scars especially (superficial scars). Combination of dermapen and glycolic acid peel is more effective than monotherapy by either dermapen or glycolic acid peel and also helps in improvement of deep acne scars. Keyword : Microneedling, Glycolic acid, Acne scar.

MICRONEEDLING AND GLYCOLIC ACID PEEL FOR TREATMENT OF ACNE SCAR; COMPARATIVE STUDY