Laser ya Q-Switched Nd: YAG imawunikira kuwala ndi kutalika kwake kwamphamvu kwamphamvu kwambiri, chifukwa chake kuwala kumalowa mu minofu kokha kwa nanosecond.Kuwalako kumatengedwa ndi mtundu wa pigmentation ndipo kumabweretsa kuphulika nthawi yomweyo, ndiko kuphulika kwa kuwala.Tizidutswa ta pigmentation timaphwanyika kukhala tizidutswa tating'ono ting'onoting'ono, tinthu tating'ono ting'onoting'ono tomwe timakhala tinthu tating'ono ting'onoting'ono tomwe timakhala tinthu tating'onoting'ono tomwe timakhala tinthu tating'onoting'ono tomwe timakhala tinthu tating'onoting'ono tomwe timakhala tinthu tating'onoting'ono tomwe timapangidwa ndi phagocyte kenako ndikuchotsedwa ndi lymphatic system.