Discussion : Ablative lasers seem to achieve the highest degree of efficacy , albeit this is associated with significant pain and downtime , and the risk for long-term pigmentary changes .
Non-ablative fractional photothermolysis ( FP ) has a much safer profile but can not achieve as good cosmetic results .
The efficacies of fractional radiofrequency microneedling and radiofrequency are slightly inferior to that of FP but offer an even safer adverse profile .
Conclusion : Multiple devices have been used with varying levels of efficacy and very different safety profiles .
There is an overall lack of high- quality evidence about the effects of different interventions .
Introduction : Acne scarring is a very common problem , which can be extensive , and may lead to significant psychosocial morbidity .
Multiple types of treatments are used to ameliorate atrophic scars with varying degrees of success .
This paper provides an overview of the various energy-based modalities that are commonly employed against acne scarring .
Objectives and methods : A comprehensive literature search of papers published since 2008 was performed in order to determine the efficacy and adverse reactions of commonly used energy-based treatments against post-acne scarring .
Attenuation of acne scars using high power fractional ablative unipolar radiofrequency and ultrasound for transepidermal delivery of bioactive compounds through microchannels.
BACKGROUND AND OBJECTIVE To determine the efficacy and safety of a new method for treating  acne scarring  over a short-term period of 2 months and a long-term period of 6 months . MATERIAL S AND METHODS Six faces and 13 shoulders or backs for a total of 19 patients were treated , all of which displayed varying degrees of acne scarring , from moderate to severe . A newly developed high-power unipolar fractional ablative radiofrequency technology was used ( iPixel ™ RF , Alma Lasers , Caesarea , Israel ) , with acoustic pressure ultrasound guided dermal injection of the PixelTreat Scars preparation ( Alma Lasers ) , through RF Pixel fractionated microchannels . All patients underwent four treatment sessions at 3-week intervals . RESULTS Significant improvement was observed in scarring , both on the face ( P < 0.0001 ) , and on the back and shoulders ( P < 0.0001 ) . After 2 months , the percentage of fading on total scarring was 57 % on the face and 49 % on the back and shoulders ; after 6 months , the percentage increased to 62 % on the face , and 58 % on the back and shoulders , respectively . Patients reported to be Somewhat Satisfied ( 16 % ) , Satisfied ( 53 % ) , and Very Satisfied ( 31 % ) . No unexpected side effects to the ablation and no hypersensitive reactions to PixelTreat Scars were observed . CONCLUSION The bimodal procedure is safe and effective in reducing acne scarring . This represents a new therapeutic alternative of great interest , to be used either as a monotherapy , or in combination with other treatments
Discussion : Ablative lasers seem to achieve the highest degree of efficacy , albeit this is associated with significant pain and downtime , and the risk for long-term pigmentary changes .
Non-ablative fractional photothermolysis ( FP ) has a much safer profile but can not achieve as good cosmetic results .
The efficacies of fractional radiofrequency microneedling and radiofrequency are slightly inferior to that of FP but offer an even safer adverse profile .
Conclusion : Multiple devices have been used with varying levels of efficacy and very different safety profiles .
There is an overall lack of high- quality evidence about the effects of different interventions .
Introduction : Acne scarring is a very common problem , which can be extensive , and may lead to significant psychosocial morbidity .
Multiple types of treatments are used to ameliorate atrophic scars with varying degrees of success .
This paper provides an overview of the various energy-based modalities that are commonly employed against acne scarring .
Objectives and methods : A comprehensive literature search of papers published since 2008 was performed in order to determine the efficacy and adverse reactions of commonly used energy-based treatments against post-acne scarring .