Red light therapy, also known as photobiomodulation or low-level laser therapy, is a new wellness treatment gaining popularity for its many health and beauty benefits. It involves exposing the body to certain wavelengths of red and near-infrared light to stimulate cellular function and boost the body’s natural healing processes.
In this first article of a two-part series, we’ll provide an overview of what red light therapy is, how it works, and the main benefits reported from using this non-invasive therapy.
What is Red Light Therapy?
Red light therapy involves using light-emitting diodes (LEDs) or lasers in the red to near-infrared spectrum (wavelengths of 600-1000nm) and delivering the light energy to the skin and cells. Red light is able to penetrate deep into tissue, up to 5mm in the skin without causing any thermal damage, according to Dr. Dendy Engelman, a board-certified cosmetic dermatologist.
When the red light is absorbed by the cells, it stimulates increased ATP (adenosine triphosphate) production. ATP is the primary energy carrier in cells and higher levels boost cell metabolism and functioning. This leads to a wide range of therapeutic benefits.
Red light therapy is completely non-invasive and side effect free. The LED devices are generally portable and easy to use at home. Sessions typically last 10-20 minutes. The light wavelengths, intensity, and duration can be adjusted to achieve specific desired results.
Specific Benefits of Red Light Therapy
There is a growing body of research demonstrating red light therapy’s positive effects on many aspects of health, wellness and beauty. Here are some of the main benefits reported:
Wound Healing & Tissue Repair
A 2017 meta-analysis found that red light therapy significantly reduced healing time for wounds compared to placebo. It can help treat burns, scarring and infections while reducing inflammation.
Pain Relief
A 2020 review found that red light therapy provided moderate pain relief for chronic pain conditions like osteoarthritis and low back pain.
Improved Skin Health
A 2017 study found that red light therapy reduced wrinkles and improved skin texture in participants with mild to moderate facial wrinkles. It also helps treat sun damage, rosacea, eczema and acne.
According to Dr. Dendy Engelman, a board-certified cosmetic dermatologist, “Red light induces skin regeneration… This is why RLT has huge benefits of reducing wrinkles, scars, and acne.”
Anti-Aging Effects
The collagen boosting effects and cell rejuvenation capabilities help rejuvenate the skin and combat signs of aging. This can lead to a more youthful, vibrant appearance.
Reduced Inflammation
Red light exposure has been shown to reduce inflammatory cytokines. This helps reduce inflammation in conditions like osteoarthritis, muscle injury, tendinitis.
Cognitive Benefits
Preliminary studies on red light therapy for brain health have found improved memory, focus and mood in healthy adults. More research is still needed in this area.
This overview covers the basics of what red light therapy is and some of its major scientifically-backed health and wellness benefits.
Stay tuned for part two where we’ll dive into using at-home red light therapy devices.
Disclaimer: The information provided is for educational purposes only and should not be interpreted as medical advice. Red light therapy is considered safe and well-tolerated. However, it’s important to use devices according to the manufacturer’s instructions and consult a healthcare professional if you have any concerns.
FAQ
What is the difference between red light therapy and infrared therapy?
Red light therapy uses visible red light wavelengths of 600-700nm. Infrared therapy uses invisible light wavelengths of 700-100nm. Many devices use a combination of both for enhanced benefits.
Is red light therapy safe?
Red light therapy is considered very safe with minimal side effects when FDA approved devices are used as directed. The light wavelengths and intensity levels are too low to cause damage to skin and eyes.
How often should you do red light therapy?
Most experts recommend using red light therapy devices 2-3 times per week for best results. Daily use is fine for short sessions of 10-15 minutes. Consistency is important.
How long until you see results from red light therapy?
Benefits like pain relief and enhanced muscle recovery are often noticed after just a few sessions. Anti-aging skin results take 2-4 weeks. Continued use provides progressive improvements.
Can you do too much red light therapy?
It’s unlikely you can overdo red light therapy when staying within recommended session times. Too much could cause mild side effects like headache or skin flushing. Simply reduce your exposure if you notice any irritation.