Q-SWITCHED ND:YAG TREATMENT OF TATTOOS AND PIGMENTED LESIONS
Dating back to ancient times, tattoos have been a wide spread phenomen on in many cultures, and their popularity has been growing in recent years. Tattoos are broadly divided into five categories – professional, amateur, cosmetic, medicinal and traumatic. The dyes used to create these tattoos differ in terms of origin, specific components, color, particle size, and concentration. Tattoo dyes are composed of insoluble,indigestible colored or reflective solid particles that may either be phagocytosed or remain free in the intercellular space at various depths up to 1.5 mm (for professional tattoos).The phagocytic cells are usually immobilized by a network ofconnective tissue, while the inter cellular dye particles may have a greater degree of mobility. Chemical and conformational modifications of the dye particles, as well as their physical displacement, often lead to a duller, more blurred appearance of the tattoo with time.