HNP is significantly effective in promoting the healing of acute and chronic wounds. Recent technological advancements in mechanisms have enabled Doctors to deploy the therapy for wide variety of applications. It has not just increased the scope but also improvised the process for better results. It relieves pain and accelerates the resolution of inflammation. The mechanism of HNP is based on photochemical reaction rather than heat effect. The HNP light can penetrate about 23 cm into body tissue and bio-stimulation produces its primary effect during the cell proliferation phase, increasing mitochondria respiration through stimulation of Cytochrome Oxidase. ATP levels are stoked up and the mitochondrial membrane is activated in response to NIR rays.