The Application of Light Emitting Diode (LED) in Cosmetic Dermatology.
Level 5 - mechanism / opinion, no new human data
Narrative review without systematic methodology or primary clinical trial data.
PubMed 40751922 · doi:10.1111/phpp.70041
What was done
Comprehensive narrative literature review assessing the biological mechanisms, clinical uses, and outcomes of light-emitting diode (LED) therapy in cosmetic dermatology across blue (400-470 nm), yellow (570-590 nm), red (630-760 nm), and near-infrared (760-1200 nm) wavelengths, as well as combination treatments and LED-mediated photodynamic therapy.
What was found
No quantitative figures or effect sizes are reported in the abstract. Qualitatively, LED light acts on photoreceptors including opsins, mitochondrial cytochrome C, and cryptochromes to regulate mitochondrial function, immune responses, cellular proliferation, differentiation, collagen synthesis, and inflammation. Clinically, blue light addresses acne vulgaris and skin barrier repair; yellow light reduces melasma and photoaging; red light promotes scar healing, hair growth, and skin rejuvenation; near-infrared light manages pigmentary disorders, skin aging, and wound healing; and wavelength combinations or LED-photodynamic therapy improve outcomes for acne and photoaging.
Why it matters
The review provides a structured overview matching specific LED wavelengths to skin photoreceptors, biological pathways, and aesthetic dermatologic applications.
Limits
This is a narrative review without reported systematic search protocols, quality appraisal, or meta-analytic pooling. The abstract provides no quantitative data, sample sizes, patient demographics, or comparative effect sizes.
Cited by
- supports Red light and near-infrared light therapy have been shown to accelerate muscle recovery, improve skin health, aid wound healing, treat acne, reduce pain and inflammation, enhance mitochondrial function, and improve vision.
- supports Red light, near-infrared, and infrared light improve muscle recovery, skin health, wound healing, acne, pain, inflammation, mitochondrial function, and vision.
- supports Red light exposure from devices or the sun improves wound healing in the skin, reduces acne symptoms, and reduces inflammation.
- supports Using red light face masks boosts collagen production and improves fine lines, blemishes, and skin complexion.
- supports Using a Bon Charge red light therapy face mask for 15 to 20 minutes a day boosts collagen production and improves fine lines and blemishes.