Keratosis pilaris (KP) is a common skin condition characterized by ... One significant study investigated the use of long-pulsed 755-nm alexandrite laser for treating keratosis pilaris.

Thus, the Q-switched Nd:YAG (1064 nm) or alexandrite (755 nm) laser would be a better choice for treating blue and black tattoo pigments in darker skin since ... the problem of competitive melanin ...