India, July 18 -- Hair loss can be triggered by illness, stress, or genetics. While home remedies like onion or rosemary oil are popular, tech-based solutions are gaining attention too. One such option is red light therapy, recently endorsed by American tech entrepreneur Bryan Johnson as part of his hair restoration routine. The 43-year-old, who tends to share health hacks and longevity tips, had written, "Red light cap-six minutes a day, and you can be doing your morning routine as you wear it." Red light therapy (RLT), also called low-level laser therapy (LLLT) or photobiomodulation (PBM), is a non-invasive treatment used in dermatology for healing, reducing inflammation, and rejuvenation. "It uses low-wavelength red or near-infrared light, typically between 630-670 nanometres (nm) and 810-850 nm," says dermatologist Dr Vinata Shetty. A study in Lasers in Surgery and Medicine reported a 37% increase in hair growth with RLT, while another research in Annals of Dermatology identified 650-nm red light as the most effective wavelength for stimulating hair growth. For more such stories, log onto healthshots.com...