The emission spectrum of a typical IPL should match the absorption spectrum of the respective chromophores. 500-nm cut-off filters provide an overlap with the absorption of oxyhemoglobin; 650-nm cut-off filter predominantly with melanin. Source: Chapter 239. Lasers and Flashlamps in Dermatology, Fitzpatrick's Dermatology in General Medicine, 8e Citation: Goldsmith LA, Katz SI, Gilchrest BA, Paller AS, Leffell DJ, Wolff K. Fitzpatrick's Dermatology in General Medicine, 8e; 2012 Available at: http://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/books/gold8/gold8_c239f006.png&sec=41170762&BookID=392&ChapterSecID=41138977&imagename= Accessed: November 04, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved