Usoro ọgwụgwọ nke epidermis na dermis pigmentation
N'iji mmetụta mgbawa nke Nd: YAG laser, laser na-abanye n'ime epidermis n'ime dermis nke gụnyere ọnụọgụ nke pigmenti. Ebe ọ bụ na laser pulses na nanosecond ma na-enwe nnukwu ike, agba agba agba na-aza ngwa ngwa ma na-agbaji n'ime obere iberibe, nke a ga-ewepụ site na usoro metabolic.