We do not recommend using Laser Genesis Technologies in the treatment of MElasma. Melasma is a hormonally driven pigmentation of the skin: commonly found in women of child baring ages. Aside from certain brightening at home treatments, we suggest having an IPL treatment for reduction of the pigment. IPL is a sensitive yet effective treatment to "pull" pigment out of the skin.
Melasma is a deeper form of pigment. Laser Genesis only penetrates the very upper layers of the skin, which is not where melasma lies. So it's not effective to treat melasma. I recommend either Cosmelan (which is an in-office peel and home care kit) and/or IPL, as both of these target deeper layers where melasma is located. "This answer has been solicited without seeing this patient and cannot be held as true medical advice, but only opinion. Seek in-person treatment with a trained medical professional for appropriate care."