We manufacture red light panels. That is a reason to read this sceptically, and also the reason it is worth writing: a company that sells something and will still tell you what it does not do is easier to trust on what it does.
Here is the honest boundary.
It is not a treatment for a diagnosed condition
Red light panels are wellness devices. They are not offered, by us or by any reputable manufacturer, as a treatment for psoriasis, vitiligo, eczema, or any other diagnosed medical condition.
This matters most for people who arrive at red light therapy because they have a skin condition. If a clinician has diagnosed you with psoriasis or vitiligo, the phototherapy with an established evidence base is narrowband UVB at 311nm — a different type of device using a different part of the spectrum. A red light panel is not a gentler version of it. Buying one to treat psoriasis is buying the wrong device.
We set out the difference properly in red light therapy versus narrowband UVB.
It does not work quickly
Nothing happens in the first session. Probably nothing in the first fortnight either.
Photobiomodulation is cumulative and gradual. Any device or seller implying a visible change in days is describing something other than the mechanism. The practical consequence is that people who expect a fast result conclude it does not work and stop — before the point at which anything could reasonably be assessed.
If you are not prepared to give it months of consistent use, the honest advice is not to buy one.
More is not better
The instinct with a device like this is that doubling the session doubles the effect. It does not.
The research literature describes a biphasic dose response: below a threshold there is too little to do anything, and above an optimum, additional dose stops adding benefit. Longer sessions and higher output past that point are simply more time spent.
Which is also why a panel advertising an enormous irradiance figure is not offering you a better outcome — higher output mainly shortens the session. And frequently that figure is inflated anyway; see how to read a spec sheet.
It does not replace the basics
Sleep, diet, exercise, sun protection and — where relevant — prescribed medication do considerably more for skin and recovery than any light device. Red light therapy is an addition at the margins, not a substitute for the things that actually move the needle.
Anyone selling it as a shortcut around those is selling something else.
The evidence is uneven
Photobiomodulation has a substantial research literature, and we summarise individual studies on this site with the source named each time. But the quality varies enormously, and that is worth saying plainly.
A great deal of it is small, uncontrolled, unblinded, industry-funded, or conducted in cell cultures rather than people. Different studies use different wavelengths, doses, distances and durations, which makes them hard to compare and harder to translate into a home routine.
A useful habit: whenever you see a claim about red light therapy, ask how many people were in the study, whether there was a control group, and whether the participants knew what they were getting. Apply that to the studies we cite as well.
It is not risk-free by default
Red and near-infrared light carries no ultraviolet, so there is no burning risk and no cumulative exposure ceiling of the kind that applies to UVB. That is a genuine safety advantage and we say so.
But "no UV" is not the same as "no considerations":
- The LEDs are bright. Use the eye protection supplied or keep your eyes closed — staring into them is uncomfortable and unnecessary.
- Some medications and conditions increase photosensitivity. If you take regular medication, a word with your pharmacist costs nothing.
- If you are pregnant, or have a condition affecting your skin or eyes, ask a clinician rather than a website.
- A high-output panel produces heat. Do not use it closer than the manufacturer specifies.
Claims worth distrusting
Some of these appear on competitors' sites; a couple have appeared on ours in the past and have been removed.
- Any specific outcome on a specific timeline. "Visible results in 14 days" is not something a light device can promise.
- Cure, eliminate, permanent, reverse. None of these belong in copy about a wellness device.
- An irradiance figure with no distance or instrument. Unfalsifiable, and usually roughly double the honest number.
- Before-and-after photographs without stated lighting, timescale or what else changed.
- "Clinically proven" with no study named. If a study exists, it can be linked.
- A condition list as a feature list. A device that claims to help twenty unrelated conditions is describing marketing, not mechanism.
So what is it good for?
Having spent an article on the limits, the fair answer: as a low-risk, non-invasive addition to a routine, used consistently over months, for skin appearance, post-exercise recovery and general comfort. Judged against that, and bought on measured specifications rather than promises, a good panel is a reasonable purchase.
Judged against a promise of transformation, it will disappoint — and so would anything else.
If that framing suits you, our UK buyer's guide covers how to compare devices honestly, and the RLF range publishes a spectrometer-measured output figure for every model at a stated distance.
Common questions
Does red light therapy really work?
There is a substantial research literature behind photobiomodulation, but the quality varies and much of it is small or uncontrolled. It is best understood as a gradual, cumulative addition to a routine rather than a treatment with a guaranteed outcome.
How long before I see results from red light therapy?
Not days. It is cumulative and gradual, so judge it over months of consistent use. Any seller implying a visible change within a fortnight is overstating it.
Can red light therapy treat psoriasis or eczema?
No. Red light panels are wellness devices, not treatments for diagnosed conditions. Narrowband UVB at 311nm is the phototherapy with an established evidence base for those conditions, and it is a different device entirely.
Is more red light therapy better?
No. The literature describes a biphasic dose response — below a threshold too little happens, and above an optimum, more dose stops adding benefit. Longer sessions past that point are just more time.
Are there any risks with red light therapy?
It carries no ultraviolet, so no burning risk. But the LEDs are bright and eye protection is sensible, some medications increase photosensitivity, and anyone pregnant or with a skin or eye condition should ask a clinician first.
What red light therapy claims should I be suspicious of?
Specific outcomes on specific timelines, the words cure or permanent, irradiance figures with no distance or instrument stated, "clinically proven" with no study named, and long lists of unrelated conditions.
This article is general information and is not medical advice. If you have a diagnosed condition, speak to your doctor or dermatologist.