Photodynamic Therapy With Low-Strength ALA,Repeated Applications and Short Contact Periods(40-60 Minutes) in Acne, Photoaging and Vitiligo
June 2009 | Volume 8 | Issue 6 | Original Article | 562 | Copyright © June 2009
Gabriel Serrano MD, Matilde Lorente MD, Madga Reyes MD, Fernando Millan MD, Adrian Lloret MD, Joaquin Melendez, Maria Navarro, Miguel Navarro MD
Abstract
Topical aminolevulinic acid (ALA) photodynamic therapy (PDT) is currently being used for the treatment of actinic keratosis of the
face and scalp. This study reports the results obtained after three to four treatments with ALA-PDT in patients with acne (n=12),
photoaging (n=8) and vitiligo (n=6). ALA was applied on large areas (e.g., full face) and at very low strengths (1-2%). Side effects
were minimal and self-limited. 
