How Red Light Therapy Helps Psoriasis: Natural Anti-Inflammatory
Psoriasis is a common chronic skin condition caused by an overactive immune system. This leads to an accelerated turnover of skin cells, causing thick, red, scaly patches to form on the skin. The condition can cause physical discomfort and often has a negative impact on quality of life. In addition to traditional treatments such as corticosteroids and UVB phototherapy, red light therapy is gaining ground as a safe, non-invasive and natural treatment option.
What is red light therapy?
Red light therapy (also called photobiomodulation or low-level laser therapy) is a technique that uses visible red and near-infrared light to positively influence biological processes in the body. Unlike UV light, which can be harmful with prolonged exposure, red light is non-ionizing and safe in controlled applications.
The photons of light are absorbed by an enzyme in the mitochondria of the cells: cytochrome c oxidase . This leads to a chain reaction in which:
- The production of ATP (cellular energy) increases
- Inflammatory markers such as TNF-α and IL-6 decrease
- Improve blood circulation and cell metabolism
These reactions work together to repair damaged skin cells, normalize the immune system and reduce inflammation.
Why are wavelengths between 630 and 660 nm effective?
Red light with a wavelength between 630 and 660 nanometers is well absorbed by the skin and penetrates several millimeters deep. This is deep enough to reach the epidermis and superficial dermis, where most of the immune cells and keratinocytes involved in psoriasis are located.
The main effects of red light at this level are:
Increased ATP production
The extra energy helps damaged skin cells regenerate faster. In psoriasis, the cell division process is accelerated but chaotic. Red light helps normalize this process.
Reduced inflammation
It inhibits the production of pro-inflammatory cytokines such as TNF-α, which are found in high concentrations in people with psoriasis. This reduces redness, itching and swelling.
Improved microcirculation
Red light stimulates the production of nitric oxide, which leads to dilation of blood vessels and better blood flow. This accelerates the recovery process and improves the supply of oxygen and nutrients.
Modulation of the immune system
Red light helps suppress overactive T cells without suppressing the entire immune system. This is essential for an autoimmune disease like psoriasis.
Scientific basis
-
Meffert, H. (1995). Light therapy for skin diseases.
This study describes how long-wave red light has an anti-inflammatory effect on skin diseases such as psoriasis.
Read the publication via Springer -
Razoki & Brinkhuizen. Lasers in dermatology (NVDV).
Describes the effect of different wavelengths, including red light, on skin diseases.
View the PDF file -
Leiden University. Light therapy for plaque psoriasis.
Report of clinical application of red light therapy in patients with moderate to severe psoriasis.
Download publication
How do you apply red light therapy?
| Aspect | Recommendation |
|---|---|
| Treatment duration per session | 10 to 20 minutes |
| Frequency | 3 to 5 times a week, for at least 4 weeks |
| Device | Medical LED panel or handheld device with 630–660 nm wavelength |
| Treatment area | Affected skin areas such as knees, elbows, back or scalp |
| Precaution | Do not use on infected skin or if photosensitized due to medication |
Always consult a doctor or dermatologist before starting red light therapy, especially if you are taking other medications or therapies.
Conclusion
Red light therapy is a promising, safe and natural way to treat psoriasis. By inhibiting the inflammatory processes, supporting skin cells in their recovery and locally regulating the immune system, this method can contribute to the relief of symptoms without side effects. For many people, it is a valuable addition to their treatment plan.
