Cold laser is a sterile, painless, drug-free modality, non-invasive that is used for a variety of conditions, containing acute and chronic pain. During a laser treatment, the light will penetrate the skin and is absorbed by a particular receptor within the mitochondria. Receptor stimulation with light promotes energy production, biochemical reactions, protein and growth factor synthesis, cell growth and proliferation and enhanced blood and oxygen flow. Raised blood flow decreases inflammation that can cause pain. Cold laser therapy also known as low-level laser therapy (LLLT) reduces pain, improves wound healing, regenerates nerves and relieves muscle tension. The cold laser therapy offers all these advances over pharmaceuticals and the related side effects. Cold laser therapy also recognized by the name photobiomodulation and phototherapy uses light energy from light-emitting diode or lasers to elicit biological or cellular responses in the body.