title: Efficacy and Safety of Pueraria lobata Extract in Gray Hair Prevention: A Randomized, Double-Blind, Placebo-Controlled Study.
abstract: BACKGROUND
  Graying of hair-a sign of aging-raises cosmetic concerns. Individuals with gray hair often look older than others their age; therefore, some dye their hair for aesthetic purposes. However, hair colorants can induce many problems including skin irritation, allergic reaction and hair-breakage.
  
  
  OBJECTIVE
  This randomized, double-blind clinical trial was performed in order to examine the effects of APHG-1001, a compound including an extract from Pueraria lobata, on graying hair.
  
  
  METHODS
  A total of 44 female subjects were randomly treated with either APHG-1001 or placebo twice daily for 24 weeks. Using the phototrichogram analysis, a count of newly developed gray hair was estimated. Investigator assessment and subject self-assessment were also performed in order to evaluate the efficacy of the compound.
  
  
  RESULTS
  The mean number of newly developed gray hair at 24 weeks was 6.3/cm(2) in the APHG-1001 group and 11.4/cm(2) in the placebo group; the difference was statistically significant (p<0.05). However, the investigator assessment and subject self-assessment did not show any significant change in the gross appearance of hair grayness by the end of the study. No severe adverse events in either group were observed. Moreover, the incidence of adverse events did not differ between the groups.
  
  
  CONCLUSIONS
  This clinical trial revealed that APHG-1001, which contains an extract of P. lobata, could prevent the development of new gray hair without any remarkable adverse effects. Thus, it can be considered as a viable treatment option for the prevention of gray hair.
authors.affiliation: Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Seong Jin
authors.initials: SJ
authors.lastname: Jo
authors.forename: Hyoseung
authors.initials: H
authors.lastname: Shin
authors.forename: Seung Hwan
authors.initials: SH
authors.lastname: Paik
authors.forename: Sun Jae
authors.initials: SJ
authors.lastname: Na
authors.forename: Yingji
authors.initials: Y
authors.lastname: Jin
authors.forename: Won Seok
authors.initials: WS
authors.lastname: Park
authors.forename: Su Na
authors.initials: SN
authors.lastname: Kim
authors.forename: Oh Sang
authors.initials: OS
authors.lastname: Kwon
keywords: Aging; Antioxidants; Gray hair; Hair; Pueraria lobata