Photobiomodulation (PBM), commonly delivered via LED light therapy, is an evidence-based, non-invasive modality increasingly used in aesthetic and regenerative medicine.
Different light wavelengths penetrate the skin to activate targeted biological responses at the cellular level:
🔴 Red Light (around 630–660 nm): Stimulates fibroblast activity, promotes collagen production, reduces inflammation, and accelerates wound healing.
🔵 Blue Light (around 415 nm): Demonstrates antimicrobial properties, particularly against Propionibacterium acnes, making it effective in acne management without compromising the skin barrier.
🌫️ Near-Infrared Light (810–850 nm): Penetrates more deeply to support mitochondrial function, enhance tissue repair, and reduce pain and post-procedural swelling.
PBM is commonly used adjunctively after treatments such as microneedling, chemical peels, and injectables to improve healing, minimise erythema, and optimise patient outcomes. It is painless, safe across skin types, and supported by a growing body of clinical and in vitro research.
As interest in regenerative strategies grows, PBM represents a low-risk, high-value tool in the aesthetic practitioner’s armamentarium.
⚠️ A word of caution: Not all LED devices are created equal. Medical-grade LED systems used in clinical settings deliver specific wavelengths and calibrated energy outputs backed by scientific research. Many inexpensive at-home or online devices lack sufficient power or precision, and may not deliver the therapeutic benefits seen in clinical studies. For optimal safety and efficacy, PBM should be administered using validated equipment under professional guidance.