A Q-Switched Nd:YAG laser creates a special wavelength of light that is absorbed by the pigmented lesions. The light vibrates and shatters the pigment breaking the melanin into micro-particles thus lightening up the lesion.
The spot turns gray or white for a few minutes which is a natural response of the skin as it absorbs the energy. The spot then darkens and slough off completely within one to two weeks.
Disclaimer: Results may vary from patient to patient.