Impact of near-infrared radiation in dermatology

Figure 3 The absorption coefficients and wavelength of the near-infrared device. This graph shows the absorption coefficients of melanin (brown), hemoglobin (red) and water (blue). The near-infrared (NIR) device used in our study emits a spectrum of NIR from 1100 to 1800 nm (bold red), with filtering of wavelengths between 1400 and 1500 nm (blue belt) that are strongly absorbed by water and hemoglobin. Cited and revised from Figure 2 of reference 3.