Red Light Therapy
Your Complete Guide to the Benefits of Red Light Therapy for Longevity and Full-Body Wellness
What Is Red Light Therapy?
Red light therapy is a gentle, non-invasive treatment that uses specific wavelengths of red and near-infrared light to support cellular energy production. Unlike ultraviolet light from the sun, red light therapy doesn't burn or damage your skin — it works at a cellular level to boost energy, support natural cellular processes.
The science behind this therapy is called photobiomodulation — using light to change biology. It's the same principle that allows plants to convert sunlight into energy through photosynthesis. Originally developed by NASA to promote plant growth in space, scientists soon discovered that red light also supported tissue wellness on astronauts' hands. Since then, thousands of studies have explored its potential for skin health, muscle performance, hair growth, and overall wellbeing.
How Does Red Light Therapy Work?
The Science Made Simple
When red and near-infrared light reaches your skin, it penetrates 1-50 millimetres beneath the surface and is absorbed by your mitochondria — the tiny powerhouses inside every cell. There, it triggers an enzyme called cytochrome c oxidase, enhancing production of ATP (adenosine triphosphate) — your cells' primary energy currency.
Think of it like charging a battery. When your cellular batteries are fully charged, cells function more efficiently — support cellular repair, natural cellular processes, and communicating better with each other.
Red Light vs Near-Infrared Light
Red light (630–670nm) is absorbed closer to the skin's surface, making it ideal for skin health, collagen production, and facial treatments.
Near-infrared light (810–850nm) penetrates deeper into muscles, joints, and tissues — excellent for physical comfort, muscle support, and post workout wellness. The best devices combine both wavelengths for comprehensive benefits.
Benefits of Red Light Therapy
Skin Health, Face, and Skin Conditions
Red light therapy has its strongest evidence base in dermatology. The therapy stimulates collagen production, supports circulation through vasodilation, and supports cellular repair — delivering benefits across a wide range of skin concerns.
Anti-ageing and facial rejuvenation: Red light therapy panels and handheld red light therapy devices may support skin appearance including fine lines and wrinkles, support skin elasticity, even out skin tone, and restore a healthy glow. Many users see visible improvements within 4-8 weeks of consistent use.
Eczema: The therapy may support skin comfort and the skin's natural barrier function.
Psoriasis: Studies show red light supports skin wellness for those with psoriasis.
Acne: Red light may support skin wellness and comfort for those experiencing breakouts. Combined with blue light (which targets bacteria), it offers comprehensive acne management.
Scars: By supporting collagen production and skin renewal processes, red light therapy may support the appearance of skin texture over time.
Hair Growth
Red light therapy for hair wellness is one of its most well-established applications. The treatment supports hair follicles by delivering more nutrients and oxygen to support healthy hair growth. Research dating back to the 1960s first observed this effect, and subsequent human studies confirm its effectiveness for hair wellness support through the growth cycle.
Benefits may include scalp circulation, stimulation of dormant follicles, and support for the hair growth cycle.
Post Workout Muscle Support and Athletic Performance
Athletes and fitness enthusiasts increasingly use red light therapy which may enhance training outcomes. By boosting cellular energy production and supporting cellular health, the therapy may support muscles post-workout and muscle overall wellness as part of a comprehensive fitness routine.
Post Workout Muscle and Physical Support
Red light therapy shows promising results for supporting physical comfort. Its cellular energy support makes it valuable for joint wellness, muscle wellness, and overall physical comfort, especially post workout.
Brain Health and Cognitive Function
Emerging research suggests near-infrared light may support neural function and neuroprotection, potentially supporting cognition and memory, and support neuro wellness. While still an active area of study, early results show promise for supporting cognitive function.
Red Light Therapy at Home
Home devices have made red light therapy accessible to everyone. Whether you choose a panel for full-body sessions, or a targeted device for specific concerns or a red light mask for facial treatments, success comes down to consistency and proper technique.
How to Use Red Light Therapy
• Duration: 10-20 minutes per targeted area. More powerful devices may require shorter sessions.
• Distance: Position yourself 6-12 inches from the device.
• Frequency: 3-5 sessions per week. Consistency matters more than intensity.
• Preparation: Treat clean, bare skin — lotions, oils, and makeup block light absorption.
Choosing Red Light Therapy Devices
• Wavelengths: Look for 630-670nm (red) and 810-850nm (near-infrared).
• Power output: Higher irradiance means effective treatment in less time.
• Treatment area: Panels for full-body; bulbs and wraps for targeted treatment.
• Quality: Choose devices with 3rd party testing, with low EMF and flicker-free operation.
Is Red Light Therapy Safe?
Red light therapy has an excellent safety profile. Unlike UV light, which can damage skin, red and near-infrared wavelengths are considered safe for regular use.
What Makes It Safe
• No UV exposure: Wavelengths are completely outside the ultraviolet spectrum — no sunburn risk.
• Non-invasive: No needles, incisions, or surgical procedures.
• Non-thermal: Modern LED devices don't generate significant heat.
Red Light Therapy Dangers and Precautions
While risks are minimal, observe these precautions:
Eye protection: Avoid staring directly at bright panels; use protective goggles if recommended.
Session limits: Follow recommended times.
Photosensitivity: Consult your doctor if taking medications that increase light sensitivity.
Skin tone: Those with darker skin may be more sensitive; start with shorter sessions.
Frequently Asked Questions
⏺ Does red light therapy actually work?
Yes — thousands of peer-reviewed studies demonstrate measurable biological effects at the cellular level. The strongest evidence supports skin rejuvenation, support for the hair growth cycle, cellular energy production, and overall wellbeing. Results vary based on device quality, wavelength, treatment consistency, and individual wellness and longevity goals.
⏺ How long does it take to see results from red light therapy?
Some people notice improved skin texture or post workout muscle comfort within a few sessions. For hair growth or significant skin changes, expect several weeks of consistent use before seeing noticeable differences. Patience and consistency are key.
⏺ How often should you use red light therapy?
Most protocols recommend 3-5 sessions per week, with each session lasting 10-20 minutes per treatment area. Daily use is generally safe. More frequent use doesn't necessarily provide better results — consistency over time matters most.
⏺ Does red light therapy work through clothing?
Bare skin gives the best results. While some near-infrared wavelengths penetrate thin, light-coloured fabrics, direct skin exposure maximises light absorption.
⏺ Is red light therapy the same as tanning beds?
Absolutely not. Tanning beds use ultraviolet (UV) light, which can damage skin. Red light therapy uses completely different, non-damaging wavelengths. They may look similar but they work in entirely different ways.
⏺ What's the difference between red light and infrared therapy?
Red light (630-670nm) works at the skin's surface — ideal for skin conditions and facial treatments. Near-infrared (810-850nm) penetrates deeper into muscles, joints, and tissues — better for muscle wellness and performance enhancement. Many devices combine both.
Far-Infrared therapy used in FIR saunas is different again. Please see our blog comparing them.
⏺ Will red light therapy make hair grow where I don't want it?
No. Red light stimulates existing hair follicles — it doesn't create new ones. Hair only grows where active follicles already exist.
⏺ What should I put on my face before a red light therapy session?
Nothing — your skin should be clean and free from makeup, lotions, or oils that block light absorption. Some people apply serums like hyaluronic acid or vitamin C after treatment.
⏺ Who should avoid red light therapy?
Most people can use it safely. Consult your doctor first if you're taking photosensitising medications, are pregnant, or have conditions making you sensitive to light.
⏺ What results can I realistically expect?
Expect gradual improvements rather than overnight transformation. Typical timelines: improved skin texture and glow within 2-4 weeks, support for younger looking skin appearance after 6-8 weeks, improvements in hair growth cycle around 3-4 months, and physical comfort often within the first few sessions.
Start Your Red Light Therapy Journey
Red light therapy represents a fascinating intersection of modern technology and your body's natural cellular energy processes. By working with your biology rather than against it, this gentle therapy supports health at the most fundamental level — your cells.
Whether you're exploring red light therapy for skin rejuvenation, hair wellness, physical performance and post workout support, or overall longevity and wellness, it offers a safe, drug-free approach supported by research. Choose a quality device, follow recommended protocols, stay consistent, and give your body time to respond. The light is waiting — all you must do is let it in.