1. Formation of Free Radicals in Human Skin during Irradiation with Infrared Light 
Maxim E. Darvin, Stefan F. Haag, Jürgen Lademann, Leonhard Zastrow, Wolfram Sterry, Martina C. Meinke 
Journal of Investigative Dermatology 
Volume 130, Issue 2, Pages (February 2010)
DOI: /jid
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2. Figure 1
Box plot of the cutaneous concentration of β-carotene (left) and lycopene (right) before and after IR irradiation, in all volunteers, with SDs. Diamonds—initial level before irradiation; stars—after IR irradiation.
Journal of Investigative Dermatology  , DOI: ( /jid )
Copyright © 2010 The Society for Investigative Dermatology, Inc Terms and Conditions

3. Figure 2
Average decay of 3-carboxy-2,2,5,5-tetramethylpyrrolidine-1-oxyl (PCA) in porcine skin biopsies (six samples) in the absence of (1) and during (2) IR irradiation. IR irradiation was performed on the porcine skin surface for 30minutes with a power density of 115mWcm−2.
Journal of Investigative Dermatology  , DOI: ( /jid )
Copyright © 2010 The Society for Investigative Dermatology, Inc Terms and Conditions