Composite graft and local flaps are good modality for the correction of deformatic scars in facial area but there are several limitations in size, shape and graft bed condition. Hyperbaric oxygen therapy is a good adjunctive therapy for the successful take of the composite graft and local flaps by providing high arterial oxygen pressure and hyperoxic state promoting angiogenesis and collagen synthesis. However, it has some substantial risks of systemic oxygen toxicity to central nervous system, lung and eyes, and needs hyperbaric chamber system and high cost. We designed a modified technique for administrating hyperbaric oxygen topically with the use of simple materials and wall oxygen for the composite graft and local flap wound. 8 patients who had undergone composite graft and local flap on facial scar area were treated with topical hyperbaric therapy for average 6 days. Grafts were relatively large in size and all of the graft bed was scar tissue due to previous operation, trauma and burn injury. All cases showed successful result and there was no complication reported. The potential advantage of this method includes fairly low expense, no need for specialized equipment, simplicity of the application and lack of systemic complication. We conclude that topical hyperbaric oxygen therapy was a simple, cost-effective and safe method for the adjunctive treatment to the composite graft and local flaps.