Red light therapy
Mixed findingsWhy it might help
Red and near-infrared light (photobiomodulation) penetrates skin and may modulate mitochondrial activity and inflammatory signaling in plaques. This differs from medical narrowband UVB phototherapy, which is the established, dermatologist-delivered light treatment for psoriasis.
What the research shows
Evidence for red/near-infrared light in psoriasis is mixed and early: some small studies of combined red plus near-infrared LED report meaningful clearance, while a randomized comparison found red light less effective than blue and plateauing quickly. Medical narrowband UVB, not consumer red light, remains the established phototherapy.
Sources & what they found (2)
A clinical review of phototherapy for psoriasis — PMC (NCBI), 2018
Review: red/near-infrared photobiomodulation shows promise (one study reported 60-100% clearance with combined 830/633 nm LED), but LLLT trials are small; narrowband UVB is designated first-line phototherapy.
Efficacy of blue light vs. red light in the treatment of psoriasis: a double-blind, randomized comparative study — PubMed, 2011
RCT: red light produced some early improvement in scaling and induration but no sustained erythema benefit, and was outperformed by blue light over the study period.



