How photobiomodulation works for skin conditions
Red and near-infrared light penetrate into the skin where they can:
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Modulate inflammation by influencing cytokine release and immune cell activity
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Stimulate repair through improved mitochondrial function and energy (ATP) production
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Improve circulation in superficial blood vessels, supporting nutrient delivery and waste removal
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Calm nerve endings, reducing itching and discomfort
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Accelerate healing of damaged skin barriers
In chronic inflammatory skin diseases like psoriasis and eczema, these mechanisms may support faster resolution of lesions and extend flare-free periods.
What the research says
Although more robust clinical trials are still needed, published research indicates potential benefits:
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Psoriasis: Early studies using monochromatic red and near-infrared light demonstrated improvement in scaling, erythema and lesion thickness. (Morita et al., 1993)
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Eczema (atopic dermatitis): Photobiomodulation has shown reductions in itching, redness and excoriation in small-scale trials, with patients often reporting better sleep due to decreased night-time itch.
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Safety profile: LLLT is generally well tolerated. Unlike UV phototherapy, it does not carry the same long-term risks of photoageing or increased skin cancer.
What people may experience
Those who respond positively to red light therapy for psoriasis or eczema often report:
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Less itching and irritation during flares
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Faster resolution of inflamed patches
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Softer, smoother skin with reduced scaling
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Longer periods between flare-ups
Sessions are usually short (5–20 minutes depending on the device and protocol) and may be repeated several times per week initially. Visible improvements may take a few weeks of consistent use.
Addressing scepticism — a balanced perspective
It’s fair to question whether red light can really influence chronic inflammatory skin diseases. Traditional dermatology treatments such as corticosteroids, biologics or UV phototherapy are supported by stronger evidence.
However, many patients feel frustrated by side effects or the limits of existing therapies. Others have felt the same hesitation about red light therapy. What they’ve found — particularly when using medically designed photobiomodulation devices — is noticeable symptom relief and improved skin comfort, especially when used alongside their prescribed care.
Why pulsed low-level laser devices are often chosen
Pulsed devices provide therapeutic energy while allowing skin cells micro-rest periods. This may improve penetration and comfort during treatment.
If you’re considering photobiomodulation at home or in a clinic, see the Pulse Laser Relief — Pulsed Low Level Laser Therapy device for details on how pulsed systems are applied in skin and pain management.
Safety and considerations
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Avoid direct treatment over skin cancer or suspicious lesions.
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Always follow device safety instructions.
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People with photosensitivity or certain medications should seek medical advice before starting.
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Red light therapy should not replace prescribed treatments, but can often complement them.
The bottom line
Red light therapy (photobiomodulation) offers a promising, low-risk adjunct for managing psoriasis and eczema symptoms. By calming inflammation, reducing itch and accelerating repair, it may help shorten flare-ups and improve comfort between them.
While not a cure and still an emerging field, the safety profile and potential for skin improvement make it worth discussing with your dermatologist or GP as part of a broader treatment plan.
References:
Morita H, Kohno J, Hori M, Kitano Y. Clinical application of low reactive level laser therapy (LLLT) for atopic dermatitis. Keio J Med. 1993 Dec;42(4):174-6. doi: 10.2302/kjm.42.174. PMID: 7907380.
