Red Light Therapy: The Complete Guide
Welcome to the Solux complete guide to red light therapy. Solux is a UK red light therapy specialist. This guide helps you understand the technology, compare panels, masks and targeted devices, and make sense of wavelength and dose claims. It is educational, not medical advice or a promise of results. Always follow the instructions for your particular device.
What is red light therapy?
Red light therapy exposes the body to selected wavelengths of visible red light, sometimes combined with near-infrared (NIR) light. Unlike ultraviolet (UV) tanning light, these wavelengths are not intended to tan skin. Devices differ in wavelength, light output, coverage, intended use and instructions, so their results cannot be assumed to be identical.
What is photobiomodulation?
Photobiomodulation (PBM) is the research term for biological responses to particular light exposures. Researchers investigate effects on cellular signalling and related processes. PBM research includes different devices and protocols; evidence from a study does not automatically validate every home-use product. Terms such as LED light therapy and low-level light therapy may overlap with PBM but do not specify a uniform treatment.
Red vs near-infrared light
Red light is visible. Near-infrared light is generally invisible and has a longer wavelength. Both appear in PBM research, sometimes together, but the treatment area, dose and device design matter as much as the colour. An NIR LED may appear dim or unlit even when operating. Check the specifications of each product rather than assuming it includes both kinds of light.
630 nm vs 660 nm
Both 630 nm and 660 nm are visible red wavelengths (nm means nanometres). They are distinct, but there is no universal rule that one is better for everyone or every goal. Compare the exact device, its output at the treatment distance, its intended use and the evidence for that protocol. A published finding for one wavelength is not proof that another is equivalent.
810 nm vs 830 nm vs 850 nm
All three are commonly discussed near-infrared wavelengths. They are not interchangeable simply because they sit close together on a specification sheet. Tissue interaction, delivered dose and the research question all matter. A device listing 850 nm should not be described as 810 nm or 830 nm; check the model’s actual wavelengths and whether claims relate to that model.
What is irradiance?
Irradiance is the rate of light power reaching a given surface area, often expressed in milliwatts per square centimetre (mW/cm²). It depends on measurement distance and method, so a figure without a stated distance is hard to compare. Advertised electrical wattage is not irradiance at your skin. Ask for measurement conditions rather than choosing the biggest number.
What is fluence?
Fluence, also called energy density, is the light energy delivered per unit area over a session, often expressed in joules per square centimetre (J/cm²). As a simplified illustration, if irradiance at the treatment area stays at 10 mW/cm² for 100 seconds, fluence is 1 J/cm². Real-world output and positioning can vary. This calculation explains the unit, not a recommended dose; longer exposure is not necessarily better.
How far should you stand from a panel?
Use the distance recommended for your specific panel. The light reaching you changes with distance, and a measurement taken close to one panel cannot be used as a treatment instruction for another. Check whether its published irradiance is measured at the distance you plan to use. Do not stand closer than the manual advises just to increase the number.
How long should a session last?
There is no universal session duration or frequency. Follow the panel, mask or targeted device manual for distance, timing and eye protection. Start conservatively where the instructions advise and do not extend sessions in pursuit of faster results. Stop if you experience discomfort.
Red light therapy for skin
Red light has been studied for aspects of skin appearance, such as texture and the look of fine lines. Outcomes vary with the person and treatment protocol, and clinical study findings may not transfer to a consumer device. It does not replace sun protection, routine skincare or medical advice for a persistent skin concern. For a face-focused format, compare the Solux AURA Face Mask and Solux ECLIPSE Face Mask, checking each model’s instructions.
Red light therapy for exercise recovery
Some PBM studies investigate exercise-related outcomes, but protocols and findings vary. If recovery is your goal, look for research that matches the timing, treatment area and device type rather than assuming any red light exposure will improve performance. Rest, nutrition and an appropriate training plan still matter.
Red light therapy and muscle recovery
Muscle recovery research asks questions about fatigue, soreness and function, which are not the same outcome. The evidence does not support a guaranteed recovery time or a universal home-use schedule. A device should not be used in place of assessment for an injury, persistent pain or unexplained symptoms. For a smaller treatment area, see the Targeted Red & Infrared Light Therapy Body Pad; its listing and manual, not this research overview, define its intended use.
Red light therapy for general wellbeing
For many people, the appeal is a simple, repeatable self-care ritual. That is different from claiming treatment of a medical condition. Choose a format you can use consistently within its instructions, set realistic expectations and evaluate how the routine fits your life rather than relying on dramatic claims.
Panel vs mask
A panel can illuminate a broader area and its positioning and distance are usually adjustable. A mask is designed for a face-focused, hands-free routine, but fit, comfort and eye-safety guidance become especially important. Neither format is universally stronger or more effective. Compare the S400 Red Light Therapy Panel with the Solux AURA Face Mask for two different form factors; check their stated wavelengths, coverage and intended use.
Panel vs therapy dome
A panel is typically a flat light source positioned facing the treatment area. A therapy dome generally surrounds or arches over an area for a different hands-free setup. Geometry affects coverage and distance, so published irradiance figures may not be directly comparable. Compare the S360 Pro Red Light Therapy Panel with The Red Light Dome – 7 Colour LED; check each product’s light modes and specifications rather than assuming the dome is equivalent to a red/NIR panel.
How to choose a red light therapy panel
- Match coverage to your goal: compare illuminated area at the recommended distance, not just outside dimensions.
- Check wavelengths: confirm exactly which red and NIR wavelengths the model emits. Not every Solux device uses every wavelength in this guide.
- Put output in context: look for irradiance with a stated distance and measurement method, and distinguish optical output from electrical wattage.
- Check everyday usability: positioning, mounting, session controls, eye guidance, warranty and the product manual all matter.
- Read claims critically: research on PBM generally is not proof of outcomes for a particular panel.
Explore the S400 panel and S360 Pro panel side by side, or consider the R30 Pro portable lamp if a compact format better fits your routine.
What certifications should you look for?
For a device sold in the UK, check the product’s applicable conformity marking and supporting documentation, such as UKCA or CE where relevant, its instructions, manufacturer or importer details and electrical safety information. Which requirements apply depends on the product and its claims. A conformity mark is not a clinical efficacy endorsement, and it does not mean a device treats a medical condition. Ask the seller for model-specific documentation rather than assuming every device has the same certifications.
How we test Solux devices
Transparency matters: we will only describe a Solux testing procedure here once the checks, measurement equipment, conditions, responsible reviewer and records have been confirmed. Until then, compare the published specifications and product instructions for each individual model, and contact Solux for model-specific documentation. This guide does not claim independent laboratory testing or clinical validation of Solux devices.
Frequently asked questions
Does red light therapy work?
Research is promising for some specific applications, but outcomes differ by device and protocol. Results from a home-use product are not guaranteed.
Is red light therapy the same as UV tanning?
No. Red and near-infrared wavelengths are different from ultraviolet tanning light. You still need appropriate sun protection.
Is 660 nm or 850 nm better?
They are different types of light. Neither is automatically better: compare your goal, the actual device and the evidence for its intended use.
Can I use red light therapy every day?
Only as directed for your device and circumstances. More frequent use is not automatically better.
Do I need eye protection?
Follow the product manual and do not stare into bright LEDs, especially during face or eye-area sessions.
How soon will I see results?
There is no reliable universal timeline. Experiences vary and no outcome is guaranteed.
Who should ask a professional before use?
Seek qualified healthcare advice if you are pregnant, have a photosensitive condition, take photosensitising medication, have a medical concern, or intend to use a device on an injury or unexplained lesion. Stop if you experience discomfort.
About this guide: Solux aims to make red light therapy easier to understand for UK shoppers. This information is educational and not medical advice, diagnosis or treatment. Check the specifications, warnings and manual for the particular device you choose.