Lasers, lights, and leds

Frances Walocko, Bianca Y. Kang, Yu Feng Chang, Jeffrey S. Dover, Murad Alam

Research output: Chapter in Book/Report/Conference proceedingChapter


Androgenetic alopecia affects a significant proportion of the population. Several laser and light-based interventions, including low-level laser/light therapy, excimer laser, monochromatic excimer light, narrowband ultraviolet B phototherapy, and fractional lasers, have been investigated for the treatment of androgenetic alopecia. Among these, the best studied is low-level laser/light therapy, or photobiomodulation. Low level laser/light therapy is effective for the treatment of mild to moderate androgenetic alopecia in men and women and is safe to use in Fitzpatrick skin types I to IV. This intervention is likely most useful when used in conjunction with other effective therapies, including medications such as minoxidil or finasteride or surgical interventions (e.g., hair transplantation). Further research is required to optimize treatment protocols, better understand patient selection, and confirm long-term safety and efficacy.

Original languageEnglish (US)
Title of host publicationProcedures in Cosmetic Dermatology
Subtitle of host publicationHair Restoration
Number of pages11
ISBN (Electronic)9780323829212
ISBN (Print)9780323829229
StatePublished - Jan 1 2023


  • alopecia
  • androgenetic
  • hair
  • Laser
  • LED
  • light
  • light-emitting diode
  • treatment

ASJC Scopus subject areas

  • Medicine(all)


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