Red light therapy is considered to be safe. Similar to sunlight, photons of light give you energy and improve your wellbeing.
Red light therapy has been used since 1967 and has become more widespread since the ‘90s with advances in LED technology.
There are thousands of clinical studies that support the safety and effectiveness of red light therapy, including by organizations like NASA.
In 2018 the FDA even added certain classes of red light therapy devices as ‘exempt’ due to the inherent safety of the technology.