The Q-switched Nd:YAG laser (at a wavelength of either 532 nm or 1064 nm) can be used to treat melasma, as well as wrinkles.
The laser can penetrate and target melanin in the deep dermis, where melasma is created. One advantage of this laser is that there is no need for anesthesia and the process is relatively painless. After treatment, the area will become white with some surrounding redness.