Yes, red light therapy (RLT) beds are generally considered safe when used correctly and have minimal side effects. However, safety depends on factors such as the quality of the device, exposure time and individual health conditions. Here’s a detailed breakdown:
Safety factors of red light therapy beds
No UV radiation
Unlike tanning beds, RLT beds use LEDs that emit only red (630–700 nm) and near-infrared (800–900 nm) light. These wavelengths lack the DNA-damaging UV rays that are linked to skin cancer.
Non-thermal and non-invasive
The light is low-level (LLLT), meaning it doesn’t heat or burn the skin. It is FDA-approved for pain relief and skin treatments.
The FDA has approved it for certain uses.
Some devices are approved for treating conditions such as muscle and joint pain, acne and hair loss (e.g. Joovv and Celluma). Check for FDA 510(k) clearance.
Minimal side effects:
Rare and mild: temporary eye strain, dryness or slight redness (avoid direct eye exposure – wear goggles).
Potential risks and precautions:
Eye safety:
Prolonged exposure to bright red/near-infrared (NIR) light may cause retinal strain. Always use protective goggles, especially with high-power beds.
Skin Sensitivity:
People with photosensitivity disorders (e.g. lupus or porphyria) or who are taking photosensitising medications (e.g. antibiotics or Accutane) should consult a doctor first.
Overuse:
More isn’t always better. Excessive sessions (e.g. more than 20 minutes per day) may reduce the benefits or cause irritation. Stick to the manufacturer’s guidelines.
Thyroid concerns:
NIR light may affect thyroid function in some individuals. Those with hyperthyroidism should monitor their symptoms.
Pregnancy:
Limited research exists. As a precaution, pregnant women are often advised to avoid full-body red light therapy (RLT).
Who should avoid red light therapy beds?
People with active skin cancer (there is a theoretical risk of stimulating malignant cells).
Those using photosensitising drugs (e.g. tetracyclines or retinoids).
Individuals with epilepsy (flashing lights may trigger seizures in rare cases).
How to use safely:
Choose a reputable device.
Opt for FDA-cleared or clinically tested brands (e.g. Merican). Avoid cheap, uncertified models.
Follow time/distance guidelines.
A typical session lasts 10–20 minutes at a distance of 6–12 inches from the bed, 3–5 times per week.
Protect your eyes:
Wear amber or opaque goggles designed for RLT.
Patch test first.
Try a small area to check for skin reactions.
Scientific consensus:
A 2023 review in Photobiomodulation, Photomedicine, and Laser Surgery confirmed that RLT is safe for most users when protocols are followed.
No long-term risks have been identified in the many years it has been in use, but research is ongoing.
Bottom line:
Red light therapy beds pose a low risk to most people, but you should consult a doctor if you have specific health concerns. Stick to high-quality devices and proper usage guidelines.