Low-level laser (light) therapy (LLLT) in skin: stimulating, healing, restoring.
Level 5 - mechanism / opinion, no new human data
Narrative review summarizing mechanisms and clinical applications
What was done
This narrative review summarizes the proposed physiological mechanisms of low-level laser (light) therapy (LLLT) using red and near-infrared wavelengths and outlines its clinical applications across skin repair, aesthetic conditions, and inflammatory dermatoses.
What was found
The abstract reports no numerical data, effect sizes, or participant numbers. It describes qualitative biological effects, including photon absorption by mitochondrial chromophores, alterations in electron transport, adenosine triphosphate production, nitric oxide release, blood flow, reactive oxygen species, and stem cell activation. It reports therapeutic benefits for wrinkles, acne scars, hypertrophic scars, burns, UV damage, vitiligo, psoriasis, and acne.
Why it matters
It provides a broad overview of photobiomodulation mechanisms and outlines potential non-invasive applications of light therapy across diverse dermatological conditions.
Limits
As a narrative review, it lacks a systematic search methodology, risk-of-bias evaluation, and empirical human trial data within the abstract. No treatment protocols, specific wavelengths, dosages, or quantitative outcomes are reported.
Cited by
- supports Red light, near-infrared, and infrared light therapy improve muscle recovery, skin health, wound healing, acne, pain, inflammation, mitochondrial function, and vision.
- partial Long-wavelength light exposure to the skin reduces inflammation, improves skin appearance, and reduces acne in part through improving lymphatic system function.