title: Treatment of acne scars and wrinkles in asian patients using carbon-dioxide fractional laser resurfacing: its effects on skin biophysical profiles.
abstract: BACKGROUND
  Although ablative fractional resurfacing is known to be effective against photoaging and acne scars, studies on its efficacy, safety and changes in the skin characteristics of Asians are limited.
  
  
  OBJECTIVE
  The aim of this study is to assess the efficacy and safety of carbon dioxide fractional laser (CO2FL) in Koreans treated for wrinkles and acne scars, and to define the changes in skin characteristics during recovery period.
  
  
  METHODS
  We administered one session of CO2FL on 10 acne scar patients and 14 wrinkles patients with skin types IV and V. The surveillance of efficacy and side effects along with the measurement of biophysical properties was carried out before 1 day, 1 week, 1 month and 3 months after treatment.
  
  
  RESULTS
  Using a non-invasive method, skin barrier damage, erythema and bronzing of skin during the recovery period were assessed, and all of the items eventually returned to the pre-treatment level. Skin elasticity was measured in the wrinkle group, and the statistically significant effect was sustained throughout the next three months. The outcome of treatment was found to be better than 'moderate improvement' in both the acne scar and wrinkle groups. Further, there were no serious side effects three months post-procedure.
  
  
  CONCLUSIONS
  CO2 FL is thought to be an effective and safe method for treating moderate to severe acne scars and wrinkles in Asians.
authors.affiliation: Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Young Ji
authors.initials: YJ
authors.lastname: Hwang
authors.affiliation: Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Yu Na
authors.initials: YN
authors.lastname: Lee
authors.affiliation: Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Yang Won
authors.initials: YW
authors.lastname: Lee
authors.affiliation: Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Yong Beom
authors.initials: YB
authors.lastname: Choe
authors.affiliation: Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Kyu Joong
authors.initials: KJ
authors.lastname: Ahn
keywords: Ablative fractional photothermolysis; Acne scar; Wrinkle