RecruitingDevice studyFractionated 1927-nm Non Ablative Thulium Laser in Treating Post Inflammatory HyperpigmentationTo study the effect of fractionated 1927-nm non ablative thulium laser in reduction of post inflammatory hyperpigmentation (PIH) using a validated and reproducible model for studying PIH. * Determine if there is aa reduction in PIH in patients treated with three (3) monthly sessions of fractionated 1927-nm non ablative thulium laser * Determine if there is efficacy of post-procedure clobetasol propionate 0.05% ointment in the management of PIH * Determine the histological and molecular changes that occur with laser and laser plus topical steroid treatment compared to untreated skin