Sleep & Relaxation Light Therapy

The bedside units are designed as evening lighting rather than all night lighting, and the therapy devices should never run while you sleep. Any light source in a bedroom overnight, red included, is worth avoiding if you sleep better in darkness. Use the red light while you are winding down, then switch it off. Running a therapy device unattended for hours also means heat and power draw with nothing gained.

Somewhat, and the difference is smaller than most marketing suggests. Both matter, because dimness and wavelength both play a part, and a very dim warm lamp is not far off a red one. A red unit removes more of the short wavelength content, which is the part associated with alertness. If you already use a dim warm bulb at night, upgrading to red is a refinement rather than a fix

No, and please do not buy one expecting that. Persistent insomnia has causes that a lamp cannot reach, including stress, pain, medication, caffeine timing and sleep apnoea. If you have been sleeping badly for months, that is worth raising with a doctor rather than solving with a purchase. What a red light can do is remove one input, bright blue heavy lighting late in the evening, which is a narrow and honest claim.

Different goal and different intensity. Therapy devices are about delivering a dose of light into skin or tissue, so they run bright and are timed in minutes. Sleep devices are about what your eyes and body clock register in the evening, so they run dim and stay on for longer. Using a bright therapy panel late at night works against the second goal even though the colour is similar.

Low level red room lighting is generally unproblematic, and it is often used as a night light for exactly that reason. Therapy devices are a different matter and should be used by adults, with the same care about not looking directly at the LEDs. Keep cables and battery packs out of reach, and if a pet settles under a therapy device while it runs, move them.