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Regulation of Skin Collagen Metabolism In Vitro Using a Pulsed 660 nm LED Light Source: Clinical Correlation with a Single-Blinded Study
Reverse collagen downregulation and MMP-1 upregulation, decreasing wrinkles, and increasing collagen.
Treatment Time (seconds)
Irradiance/Power Density (mW/cm^2)
3x/week/4 weeks (12)
Red 630-700 nm
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I inferred there are two treatment points as irradiance implies 8 joules but study claims 4 J.
Some data in this summary is from the PBM Database