Patients who have hypo-pigmented burn scar will have two scars chosen and randomized to
treated scar and control scar. The subject will then have both scars treated with fractional
ablative CO2 laser (FLSR). The treated scar will have bimatoprost delivered through the laser
channels, while the control will have the vehicle (normal saline) only delivered. The
treatment will continue for 14 days with twice daily application. The scars will then be
monitored at a 2-week follow-up visit where levels of melanin will be evaluated. Tissue punch
biopsies will also be used to evaluate the mechanism of action of bimatoprost. Treatment will
occur for 6 sessions at 4-6 week intervals including follow- up visits and evaluations.