How effective is glass skin laser treatment in comparison to other laser treatments?

Melasma is a tricky condition to treat as there are many factors involved and the pigment can be situated superficially, deep in the skin or a combination of both superficial and deep. However, there are treatments available to treat this condition via different pathways. Personally, I use topical lightening creams, orals and different machine-driven therapies to target the pigment at different levels in the skin to get optimal results. Treatment of melasma is like a regime and requires patience as multiple sessions are required.

Good that the discoid eczema of your daughter is under control. In any case, Laser treatment may trigger or aggravate eczema,including discoid eczema. This could be due to the irritation from the laser itself or the scratching of the itch after the treatment. Darker skin may be more prone to irritation as well. Sun exposure or other activities (before or after the laser treatment) that cause dryness or darkening of the skin would certainly increase the risk.