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 .
Comparison of Stacked Pulses versus Double‐Pass Treatments of Facial Acne with a 1,450‐nm Laser
BACKGROUND Although effective as a monotherapy for the treatment of inflammatory acne , the 1,450-nm diode laser is associated with considerable pain at higher fluences . MATERIAL S AND METHODS Eleven subjects were treated with a 1,450-nm diode laser in a split-face bilateral paired acne study . One-half of the face received a single-pass consisting of stacked double pulses . The other side received a double-pass treatment of single pulses . Setting s were 11 J/cm2 or lower as tolerated with appropriate dynamic cooling device ( range 25–35 ) . RESULTS The mean pain rating was 5.33 on a 0 to 10 scale on the stacked – pulse treatment side and 5.12 on the double-pass side . Blinded reduction in mean acne lesion counts were 57.6 % and 49.8 % reduction , respectively . An overall acne scar improvement was seen in 83 % of subjects with acne scarring . Transient hyperpigmentation occurred in two patients on the stacked pulse side and completely resolved without sequelae . CONCLUSIONS The pulsed 1,450-nm diode laser can be used at lower fluences that elicit less discomfort yet effectively improve inflammatory acne . Stacking pulses appears to render a slightly higher efficacy than the multipass technique . Single-pulse , multiple-pass treatments may have a lower risk of cryogen-induced transient hyperpigmentation compared to st and ard high fluence techniques
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 .