IPL refers to intense pulsed light, the hand-held flashgun (Xenon lamps) can produce an intense, visible, broad-spectrum pulse of light with spectral range of 400 to 1200 nm. When used with interchangeable cutoff filters, it can be used against several conditions. Cooling is used to protect the skin in contact with the device. IPL devices should only be used on light to medium skin tones, and work best on darker hair. 1.480nm~1200nm: Treatment of acne and vascular lesions. : Treatment of vascular blood : Skin rejuvenation,Wrinkle for pigmented and vascular lesions (deep blood vessels). 4. 640m : Hair removal, deep red