title: Hair reduction using a new intense pulsed light irradiator and a normal mode ruby laser.
abstract: OBJECTIVE
  The main purpose of this clinical study was to compare the effectiveness of an intense pulsed light irradiator system (IPL) and a normal mode ruby laser for hair removal.
  
  
  METHODS
  Thirty-one patients were treated 3 times with a new IPL system on one side of the chin and neck and with a normal mode ruby laser on the other side. After 6 months, nine of the patients received 3 additional IPL treatments and 11 patients received 3 additional ruby laser treatments. All treatment intervals were 2 months. Hair reduction was measured by hair counts on close-up photographs.
  
  
  RESULTS
  Hair reduction was obtained by 93.5% of the patients after 3 IPL treatments and by 54.8% after 3 ruby laser treatments. The average hair count was reduced by 49.3% after IPL treatments and by 21.3% after ruby laser treatments. Three additional IPL treatments following 3 IPL treatments resulted in only 6.6% further hair reduction--in total 55.9%, whereas 3 IPL treatments following 3 ruby laser treatments resulted in an additional 35.5% hair reduction--in total 56.8%.
  
  
  CONCLUSIONS
  The IPL was found to be 3.94 times more effective than the ruby laser for hair removal. In the chin and neck region, more than 3 treatments with the IPL did not improve the therapeutic result significantly.
authors.affiliation: Department of Dermatology, Marselisborg Hospital, University Hospital of Aarhus, Denmark.
authors.forename: P
authors.initials: P
authors.lastname: Bjerring
authors.forename: M
authors.initials: M
authors.lastname: Cramers
authors.forename: H
authors.initials: H
authors.lastname: Egekvist
authors.forename: K
authors.initials: K
authors.lastname: Christiansen
authors.forename: A
authors.initials: A
authors.lastname: Troilius
mesh_terms: D000328:Adult; D005260:Female; D006197:Hair / Q000254:growth & development; D006204:Hair Removal / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D053685:Laser Therapy; D007834:Lasers / Q000009:adverse effects; D010147:Pain Measurement; D018709:Statistics, Nonparametric; D016896:Treatment Outcome