Based on my research, the claim that red light therapy is good for your skin is true. Multiple trusted news sources have explained the benefits of using red light therapy on your skin. According to Cleveland Clinic, red light therapy uses low levels of red light to improve the skin's appearance. It reduces wrinkles, scarring, redness, and acne. More specifically, red light therapy uses a process called selective photothermolysis. This process uses specific wavelengths to target tissue and stimulate activity within that tissue. In doing so, the shorter wavelengths kill skin cells, while the longer ones help to heal and stimulate cell growth. More specifically, they help to build collagen, a building protein. UT MD Anderson states that “Collagen builds muscle and reduces wrinkles in the skin.” Many studies have been conducted and have come back with results in support of red light therapy for skin health. The American Academy of Dermatology Association did a small study that involved 90 patients who received eight red light therapy treatments to their face over 4 weeks. They found that 90% of the patients said that they noticed improvements, including softer, smoother skin, less redness, and lighter dark spots. They also conducted a larger study where they used red light therapy after treating patients with laser. They found that it helped with discoloration and swelling from the laser treatments.
Red light therapy has also been found to help combat skin cancer in early stages, according to Nour Kibbi, MD, clinical assistant professor of dermatology at Stanford Medicine. She says, “Dermatologists used it for early stage treatment of precancerous and early, thin skin cancers…Red light applied at a specific wavelength in conjunction with a topical drug kills skin cells, a type of treatment called photodynamic therapy. (Red light, alone, does not destroy skin cancer.) When applied to damaged or diseased skin cells, such as cancer cells, those cells die off and allow for the growth of new skin.” According to Harvard Health Publishing, red light therapy is non-cancerous, unlike ultraviolet light. Red light therapy has minimal side effects. Scientists' only question about red light therapy at this point in the research is how long each treatment should last based on your skin type and issues. It is not a matter of whether red light therapy is safe or not.