Eczema, or atopic dermatitis, involves a damaged skin barrier and an overactive immune response, producing dry, itchy, inflamed skin. Those two problems feed each other, which is why eczema is so persistent and why treating only one side of it gives partial relief.
The cycle that keeps it going
A healthy skin barrier holds water in and keeps irritants out. In eczema that barrier leaks moisture and lets things through that should stay outside. The immune system meets those intruders and responds more strongly than it needs to. The result is redness, heat and itch.
Then scratching breaks the barrier further, more gets through, and the response escalates. That loop is the actual target of any eczema treatment.
The established light treatment is not red light
Worth being clear about this, because it is easy to conflate.
As with psoriasis, the established light treatment is narrowband ultraviolet B under specialist supervision. Narrowband UVB has decades of clinical evidence and is delivered in dermatology departments with controlled dosing and monitoring, because UV carries real risks that require supervision.
Red light therapy is a different thing entirely. It contains no UV, which removes those risks, and it also removes the mechanism that makes UVB effective. Do not read evidence for one as evidence for the other.
What the evidence for red light actually is
Evidence for red and near-infrared light in eczema specifically is limited.
What exists comes from the wider literature on inflammation and barrier repair, where light appears to reduce inflammatory signalling and support the skin barrier, along with a small number of studies reporting reduced itch and redness.
The honest description of that is a reasonable rationale rather than proof. Both halves of the eczema problem are things light plausibly influences, so the logic holds together. Logic is not the same as a trial.
We would rather tell you that than imply a body of evidence that does not exist.
The thing that matters more than any device
Eczema flares have triggers that matter more than any device.
If you take one thing from this page, take that one. Common triggers include soap and detergents, fragrance, wool and synthetic fabrics, heat and sweat, dry indoor air, stress, certain foods in some children, and dust mites.
Identifying and removing your triggers does more than anything you can buy. A fragrance-free wash routine and consistent emollient use will outperform any light device, and cost far less. Anything else is an addition to that foundation.
If you do try light therapy
- Bare, clean skin. Thick ointments block light, so apply emollients after your session rather than before
- Start short. Five to ten minutes, building gradually. Inflamed skin can be reactive
- Mind the heat. Warmth is a common itch trigger. Keep the room cool and sit further back if you feel any prickling
- Three to four times a week rather than long occasional sessions
- Avoid broken or weeping skin until it has closed
- Keep the emollient routine going. Light does not replace moisturising
- Give it months. Skin barrier repair is slow
When to see a doctor
Moderate to severe eczema, particularly in children, should be managed with a doctor or dermatologist.
Eczema in children is not only a skin problem. It disrupts sleep for the whole household, affects growth and school, and carries infection risk from constant scratching. Effective treatments exist and are far better than managing alone.
Seek medical advice if eczema is widespread or worsening, if sleep is disrupted, if there are signs of infection such as weeping, crusting, pus or fever, if it is not responding to emollients and over-the-counter treatment, or if you are considering stopping a prescribed treatment. Never stop prescribed steroid treatment to try a device instead without discussing it first.
Common questions
Does red light therapy help eczema? Evidence for eczema specifically is limited. The rationale comes from wider work on inflammation and barrier repair, plus a small number of studies reporting reduced itch and redness.
Is red light the same as UVB phototherapy? No. Narrowband UVB is the established light treatment and uses ultraviolet under specialist supervision. Red light contains no UV and works differently.
Can it replace steroid cream? No, and do not stop prescribed treatment without speaking to your doctor.
Will it stop the itch? Some studies report reduced itch and redness, but heat can trigger itching, so keep sessions cool and short at first.
How long until I see anything? Think months. Barrier repair is slow, and trigger management will do more in the meantime.
Where to start
Get your emollient and trigger routine right first. If you then want to add light therapy, a targeted panel suits localised patches and a larger system suits widespread eczema.
Browse our Future Form systems, or read our fuller article on red light therapy and eczema. Free worldwide shipping, all import duties included.
