Spectrum DPL vascular removal & pigment removal system Spectrum DPL (Dye pulsed light) harnesses light energy from a very precise narrow band spectrum, for accurate treatments. Using a narrow band filter to limit the wavelength range for optimal absorption by the melanin, hemoglobin and oxyhemoglobin. The selective destruction (photothermolysis) of these chromophores removes the appearance of pigmented lesions and vascular lesions. Vascular removal wavelength: Wavelength 500-600 nm Pigment Removal wavelength: 550nm-650nm