One of the oldest, established uses of lasers is the so-called permanent hair removal [71,72]. This procedure has been performed with lasers including ruby [73], alexandrite [74], diode [23], Nd:YAG [75], and IPL [76]. The procedure using these devices is generally considered safe and effective.
It has been debated that one of the greatest benefits resulting from the use of lasers is treatment of a variety of pigmentary lesions [14,77-84]. Port wine stains and congenital nevi are a couple of dermatological conditions that have been treated with lasers. The therapeutic outcome can, in many instances, be remarkable, leading to improved quality of life for patients. Depending on the nature of the lesion, the targeted chromophore may be oxy – hemaglobin or melanin.