The short wavelength of the pulsed dye laser (PDL) makes it optimal for treatment of superficial pigmented lesions. Epidermal lesions such as lentigines, ephelides, and flat, pigmented seborrheic keratoses respond extremely well to the 510-nm pulsed dye laser. Its shallow depth of penetration into the skin makes it less than ideal for treating dermal pigmented lesions. However, like the frequency-doubled 532-nm Nd:YAG laser, the 510-nm PDL laser effectively removes bright tattoo colors like red, purple, and orange.
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