Does Red-Light Therapy Work? (2025)

Follow any beauty biohacker on social media right now and you’ll hear them raving about the benefits of red-light therapy. There’s so much hype about the technology that it’s fair to ask, “Does red-light therapy even work?”

As an increasingly popular longevity tool, red-light therapy is said to help improve skin and hair health, enhance cellular vitality, and reverse the signs of aging. While there is evidence to support the claims of red-light therapy, studies are limited. To discover best…